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Commit 7cece14a authored by Linus Torvalds's avatar Linus Torvalds
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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6 

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  sparc64: remove duplicated include
  sparc: Add kgdb support.
  kgdbts: Sparc needs sstep emulation.
  sparc32: Kill smp_message_pass() and related code.
  sparc64: Kill PIL_RESERVED, unused.
  sparc64: Split entry.S up into seperate files.
parents 95dfec6a 8cd0ae3a
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Showing with 3223 additions and 1049 deletions
arch/sparc/Kconfig
View file @ 7cece14a
......@@ -68,6 +68,7 @@ config SPARC
default y
select HAVE_IDE
select HAVE_OPROFILE
select HAVE_ARCH_KGDB if !SMP
# Identify this as a Sparc32 build
config SPARC32
......
arch/sparc/defconfig
View file @ 7cece14a
#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.25
# Sun Apr 20 01:49:51 2008
# Tue Apr 29 01:28:58 2008
#
CONFIG_MMU=y
CONFIG_HIGHMEM=y
......@@ -217,12 +217,7 @@ CONFIG_IPV6_TUNNEL=m
# CONFIG_NETWORK_SECMARK is not set
# CONFIG_NETFILTER is not set
# CONFIG_IP_DCCP is not set
CONFIG_IP_SCTP=m
# CONFIG_SCTP_DBG_MSG is not set
CONFIG_SCTP_DBG_OBJCNT=y
# CONFIG_SCTP_HMAC_NONE is not set
# CONFIG_SCTP_HMAC_SHA1 is not set
CONFIG_SCTP_HMAC_MD5=y
# CONFIG_IP_SCTP is not set
# CONFIG_TIPC is not set
# CONFIG_ATM is not set
# CONFIG_BRIDGE is not set
......@@ -245,9 +240,7 @@ CONFIG_NET_PKTGEN=m
# CONFIG_CAN is not set
# CONFIG_IRDA is not set
# CONFIG_BT is not set
CONFIG_AF_RXRPC=m
# CONFIG_AF_RXRPC_DEBUG is not set
# CONFIG_RXKAD is not set
# CONFIG_AF_RXRPC is not set
#
# Wireless
......@@ -390,7 +383,7 @@ CONFIG_DUMMY=m
# CONFIG_BONDING is not set
# CONFIG_MACVLAN is not set
# CONFIG_EQUALIZER is not set
CONFIG_TUN=m
# CONFIG_TUN is not set
# CONFIG_VETH is not set
# CONFIG_ARCNET is not set
# CONFIG_PHYLIB is not set
......@@ -544,6 +537,7 @@ CONFIG_SERIAL_SUNSU_CONSOLE=y
# CONFIG_SERIAL_SUNSAB is not set
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
CONFIG_CONSOLE_POLL=y
# CONFIG_SERIAL_JSM is not set
CONFIG_UNIX98_PTYS=y
CONFIG_LEGACY_PTYS=y
......@@ -595,6 +589,7 @@ CONFIG_SSB_POSSIBLE=y
# Multifunction device drivers
#
# CONFIG_MFD_SM501 is not set
# CONFIG_HTC_PASIC3 is not set
#
# Multimedia devices
......@@ -645,10 +640,6 @@ CONFIG_USB_ARCH_HAS_EHCI=y
# CONFIG_NEW_LEDS is not set
# CONFIG_INFINIBAND is not set
# CONFIG_RTC_CLASS is not set
#
# Userspace I/O
#
# CONFIG_UIO is not set
#
......@@ -680,16 +671,12 @@ CONFIG_FS_MBCACHE=y
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
CONFIG_FS_POSIX_ACL=y
CONFIG_XFS_FS=m
CONFIG_XFS_QUOTA=y
CONFIG_XFS_POSIX_ACL=y
CONFIG_XFS_RT=y
# CONFIG_XFS_FS is not set
# CONFIG_OCFS2_FS is not set
CONFIG_DNOTIFY=y
CONFIG_INOTIFY=y
CONFIG_INOTIFY_USER=y
# CONFIG_QUOTA is not set
CONFIG_QUOTACTL=y
CONFIG_AUTOFS_FS=m
CONFIG_AUTOFS4_FS=m
# CONFIG_FUSE_FS is not set
......@@ -725,11 +712,9 @@ CONFIG_SYSFS=y
#
# CONFIG_ADFS_FS is not set
# CONFIG_AFFS_FS is not set
# CONFIG_ECRYPT_FS is not set
# CONFIG_HFS_FS is not set
# CONFIG_HFSPLUS_FS is not set
CONFIG_BEFS_FS=m
# CONFIG_BEFS_DEBUG is not set
# CONFIG_BEFS_FS is not set
# CONFIG_BFS_FS is not set
# CONFIG_EFS_FS is not set
# CONFIG_CRAMFS is not set
......@@ -744,7 +729,6 @@ CONFIG_NETWORK_FILESYSTEMS=y
CONFIG_NFS_FS=y
# CONFIG_NFS_V3 is not set
# CONFIG_NFS_V4 is not set
# CONFIG_NFS_DIRECTIO is not set
# CONFIG_NFSD is not set
CONFIG_ROOT_NFS=y
CONFIG_LOCKD=y
......@@ -755,16 +739,10 @@ CONFIG_SUNRPC_GSS=m
CONFIG_RPCSEC_GSS_KRB5=m
# CONFIG_RPCSEC_GSS_SPKM3 is not set
# CONFIG_SMB_FS is not set
CONFIG_CIFS=m
# CONFIG_CIFS_STATS is not set
# CONFIG_CIFS_WEAK_PW_HASH is not set
# CONFIG_CIFS_XATTR is not set
# CONFIG_CIFS_DEBUG2 is not set
# CONFIG_CIFS_EXPERIMENTAL is not set
# CONFIG_CIFS is not set
# CONFIG_NCP_FS is not set
# CONFIG_CODA_FS is not set
CONFIG_AFS_FS=m
# CONFIG_AFS_DEBUG is not set
# CONFIG_AFS_FS is not set
#
# Partition Types
......@@ -821,6 +799,7 @@ CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_ENABLE_WARN_DEPRECATED is not set
CONFIG_ENABLE_MUST_CHECK=y
CONFIG_FRAME_WARN=1024
CONFIG_MAGIC_SYSRQ=y
# CONFIG_UNUSED_SYMBOLS is not set
# CONFIG_DEBUG_FS is not set
......@@ -842,70 +821,105 @@ CONFIG_DETECT_SOFTLOCKUP=y
CONFIG_DEBUG_BUGVERBOSE=y
# CONFIG_DEBUG_INFO is not set
# CONFIG_DEBUG_VM is not set
# CONFIG_DEBUG_WRITECOUNT is not set
# CONFIG_DEBUG_LIST is not set
# CONFIG_DEBUG_SG is not set
CONFIG_FRAME_POINTER=y
# CONFIG_BOOT_PRINTK_DELAY is not set
# CONFIG_RCU_TORTURE_TEST is not set
# CONFIG_BACKTRACE_SELF_TEST is not set
# CONFIG_FAULT_INJECTION is not set
# CONFIG_SAMPLES is not set
CONFIG_KGDB=y
CONFIG_HAVE_ARCH_KGDB=y
CONFIG_KGDB_SERIAL_CONSOLE=y
CONFIG_KGDB_TESTS=y
# CONFIG_KGDB_TESTS_ON_BOOT is not set
# CONFIG_DEBUG_STACK_USAGE is not set
#
# Security options
#
CONFIG_KEYS=y
# CONFIG_KEYS_DEBUG_PROC_KEYS is not set
# CONFIG_KEYS is not set
# CONFIG_SECURITY is not set
# CONFIG_SECURITY_FILE_CAPABILITIES is not set
CONFIG_CRYPTO=y
#
# Crypto core or helper
#
CONFIG_CRYPTO_ALGAPI=y
CONFIG_CRYPTO_AEAD=y
CONFIG_CRYPTO_BLKCIPHER=y
# CONFIG_CRYPTO_SEQIV is not set
CONFIG_CRYPTO_HASH=y
CONFIG_CRYPTO_MANAGER=y
# CONFIG_CRYPTO_GF128MUL is not set
CONFIG_CRYPTO_NULL=m
# CONFIG_CRYPTO_CRYPTD is not set
CONFIG_CRYPTO_AUTHENC=y
# CONFIG_CRYPTO_TEST is not set
#
# Authenticated Encryption with Associated Data
#
# CONFIG_CRYPTO_CCM is not set
# CONFIG_CRYPTO_GCM is not set
# CONFIG_CRYPTO_SEQIV is not set
#
# Block modes
#
CONFIG_CRYPTO_CBC=y
# CONFIG_CRYPTO_CTR is not set
# CONFIG_CRYPTO_CTS is not set
CONFIG_CRYPTO_ECB=m
# CONFIG_CRYPTO_LRW is not set
CONFIG_CRYPTO_PCBC=m
# CONFIG_CRYPTO_XTS is not set
#
# Hash modes
#
CONFIG_CRYPTO_HMAC=y
# CONFIG_CRYPTO_XCBC is not set
CONFIG_CRYPTO_NULL=m
#
# Digest
#
CONFIG_CRYPTO_CRC32C=m
CONFIG_CRYPTO_MD4=y
CONFIG_CRYPTO_MD5=y
CONFIG_CRYPTO_MICHAEL_MIC=m
CONFIG_CRYPTO_SHA1=y
CONFIG_CRYPTO_SHA256=m
CONFIG_CRYPTO_SHA512=m
# CONFIG_CRYPTO_WP512 is not set
# CONFIG_CRYPTO_TGR192 is not set
# CONFIG_CRYPTO_GF128MUL is not set
CONFIG_CRYPTO_ECB=m
CONFIG_CRYPTO_CBC=y
CONFIG_CRYPTO_PCBC=m
# CONFIG_CRYPTO_LRW is not set
# CONFIG_CRYPTO_XTS is not set
# CONFIG_CRYPTO_CTR is not set
# CONFIG_CRYPTO_GCM is not set
# CONFIG_CRYPTO_CCM is not set
# CONFIG_CRYPTO_CRYPTD is not set
CONFIG_CRYPTO_DES=y
# CONFIG_CRYPTO_FCRYPT is not set
CONFIG_CRYPTO_BLOWFISH=m
CONFIG_CRYPTO_TWOFISH=m
CONFIG_CRYPTO_TWOFISH_COMMON=m
CONFIG_CRYPTO_SERPENT=m
# CONFIG_CRYPTO_WP512 is not set
#
# Ciphers
#
CONFIG_CRYPTO_AES=m
# CONFIG_CRYPTO_ANUBIS is not set
CONFIG_CRYPTO_ARC4=m
CONFIG_CRYPTO_BLOWFISH=m
# CONFIG_CRYPTO_CAMELLIA is not set
CONFIG_CRYPTO_CAST5=m
CONFIG_CRYPTO_CAST6=m
# CONFIG_CRYPTO_TEA is not set
CONFIG_CRYPTO_ARC4=m
CONFIG_CRYPTO_DES=y
# CONFIG_CRYPTO_FCRYPT is not set
# CONFIG_CRYPTO_KHAZAD is not set
# CONFIG_CRYPTO_ANUBIS is not set
# CONFIG_CRYPTO_SEED is not set
# CONFIG_CRYPTO_SALSA20 is not set
# CONFIG_CRYPTO_SEED is not set
CONFIG_CRYPTO_SERPENT=m
# CONFIG_CRYPTO_TEA is not set
CONFIG_CRYPTO_TWOFISH=m
CONFIG_CRYPTO_TWOFISH_COMMON=m
#
# Compression
#
CONFIG_CRYPTO_DEFLATE=y
CONFIG_CRYPTO_MICHAEL_MIC=m
CONFIG_CRYPTO_CRC32C=m
# CONFIG_CRYPTO_CAMELLIA is not set
# CONFIG_CRYPTO_TEST is not set
CONFIG_CRYPTO_AUTHENC=y
# CONFIG_CRYPTO_LZO is not set
# CONFIG_CRYPTO_HW is not set
......@@ -913,6 +927,7 @@ CONFIG_CRYPTO_AUTHENC=y
# Library routines
#
CONFIG_BITREVERSE=y
# CONFIG_GENERIC_FIND_FIRST_BIT is not set
# CONFIG_CRC_CCITT is not set
# CONFIG_CRC16 is not set
# CONFIG_CRC_ITU_T is not set
......
arch/sparc/kernel/Makefile
View file @ 7cece14a
......@@ -25,3 +25,4 @@ obj-$(CONFIG_PCI) += ebus.o
obj-$(CONFIG_SUN_PM) += apc.o pmc.o
obj-$(CONFIG_MODULES) += module.o sparc_ksyms.o
obj-$(CONFIG_SPARC_LED) += led.o
obj-$(CONFIG_KGDB) += kgdb.o
arch/sparc/kernel/entry.S
View file @ 7cece14a
......@@ -12,7 +12,6 @@
#include <asm/head.h>
#include <asm/asi.h>
#include <asm/smp.h>
#include <asm/kgdb.h>
#include <asm/contregs.h>
#include <asm/ptrace.h>
#include <asm/asm-offsets.h>
......@@ -45,91 +44,20 @@
_SV; _SV; _SV; _SV; _SV; _SV; _SV; \
_RS; _RS; _RS; _RS; _RS; _RS; _RS;
/* First, KGDB low level things. This is a rewrite
* of the routines found in the sparc-stub.c asm() statement
* from the gdb distribution. This is also dual-purpose
* as a software trap for userlevel programs.
*/
.data
.align 4
in_trap_handler:
.word 0
.text
.align 4
#if 0 /* kgdb is dropped from 2.5.33 */
! This function is called when any SPARC trap (except window overflow or
! underflow) occurs. It makes sure that the invalid register window is still
! available before jumping into C code. It will also restore the world if you
! return from handle_exception.
.globl trap_low
trap_low:
rd %wim, %l3
SAVE_ALL
sethi %hi(in_trap_handler), %l4
ld [%lo(in_trap_handler) + %l4], %l5
inc %l5
st %l5, [%lo(in_trap_handler) + %l4]
/* Make sure kgdb sees the same state we just saved. */
LOAD_PT_GLOBALS(sp)
LOAD_PT_INS(sp)
ld [%sp + STACKFRAME_SZ + PT_Y], %l4
ld [%sp + STACKFRAME_SZ + PT_WIM], %l3
ld [%sp + STACKFRAME_SZ + PT_PSR], %l0
ld [%sp + STACKFRAME_SZ + PT_PC], %l1
ld [%sp + STACKFRAME_SZ + PT_NPC], %l2
rd %tbr, %l5 /* Never changes... */
/* Make kgdb exception frame. */
sub %sp,(16+1+6+1+72)*4,%sp ! Make room for input & locals
! + hidden arg + arg spill
! + doubleword alignment
! + registers[72] local var
SAVE_KGDB_GLOBALS(sp)
SAVE_KGDB_INS(sp)
SAVE_KGDB_SREGS(sp, l4, l0, l3, l5, l1, l2)
/* We are increasing PIL, so two writes. */
or %l0, PSR_PIL, %l0
wr %l0, 0, %psr
WRITE_PAUSE
wr %l0, PSR_ET, %psr
WRITE_PAUSE
call handle_exception
add %sp, STACKFRAME_SZ, %o0 ! Pass address of registers
/* Load new kgdb register set. */
LOAD_KGDB_GLOBALS(sp)
LOAD_KGDB_INS(sp)
LOAD_KGDB_SREGS(sp, l4, l0, l3, l5, l1, l2)
wr %l4, 0x0, %y
sethi %hi(in_trap_handler), %l4
ld [%lo(in_trap_handler) + %l4], %l5
dec %l5
st %l5, [%lo(in_trap_handler) + %l4]
add %sp,(16+1+6+1+72)*4,%sp ! Undo the kgdb trap frame.
/* Now take what kgdb did and place it into the pt_regs
* frame which SparcLinux RESTORE_ALL understands.,
*/
STORE_PT_INS(sp)
STORE_PT_GLOBALS(sp)
STORE_PT_YREG(sp, g2)
STORE_PT_PRIV(sp, l0, l1, l2)
RESTORE_ALL
#ifdef CONFIG_KGDB
.align 4
.globl arch_kgdb_breakpoint
.type arch_kgdb_breakpoint,#function
arch_kgdb_breakpoint:
ta 0x7d
retl
nop
.size arch_kgdb_breakpoint,.-arch_kgdb_breakpoint
#endif
#if defined(CONFIG_BLK_DEV_FD) || defined(CONFIG_BLK_DEV_FD_MODULE)
.text
.align 4
.globl floppy_hardint
floppy_hardint:
......@@ -1596,6 +1524,23 @@ breakpoint_trap:
RESTORE_ALL
#ifdef CONFIG_KGDB
.align 4
.globl kgdb_trap_low
.type kgdb_trap_low,#function
kgdb_trap_low:
rd %wim,%l3
SAVE_ALL
wr %l0, PSR_ET, %psr
WRITE_PAUSE
call kgdb_trap
add %sp, STACKFRAME_SZ, %o0
RESTORE_ALL
.size kgdb_trap_low,.-kgdb_trap_low
#endif
.align 4
.globl __handle_exception, flush_patch_exception
__handle_exception:
......@@ -1698,4 +1643,22 @@ pcic_nmi_trap_patch:
#endif /* CONFIG_PCI */
.globl flushw_all
flushw_all:
save %sp, -0x40, %sp
save %sp, -0x40, %sp
save %sp, -0x40, %sp
save %sp, -0x40, %sp
save %sp, -0x40, %sp
save %sp, -0x40, %sp
save %sp, -0x40, %sp
restore
restore
restore
restore
restore
restore
ret
restore
/* End of entry.S */
arch/sparc/kernel/head.S
View file @ 7cece14a
......@@ -191,7 +191,8 @@ t_bade8:BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xe
t_baded:BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
t_badf2:BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
t_badf7:BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
t_badfc:BAD_TRAP(0xfc) BAD_TRAP(0xfd)
t_badfc:BAD_TRAP(0xfc)
t_kgdb: KGDB_TRAP(0xfd)
dbtrap: BAD_TRAP(0xfe) /* Debugger/PROM breakpoint #1 */
dbtrap2:BAD_TRAP(0xff) /* Debugger/PROM breakpoint #2 */
......@@ -267,7 +268,7 @@ trapbase_cpu1:
BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
BAD_TRAP(0xfc) BAD_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff)
BAD_TRAP(0xfc) KGDB_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff)
trapbase_cpu2:
BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction)
......@@ -335,7 +336,7 @@ trapbase_cpu2:
BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
BAD_TRAP(0xfc) BAD_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff)
BAD_TRAP(0xfc) KGDB_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff)
trapbase_cpu3:
BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction)
......@@ -403,7 +404,7 @@ trapbase_cpu3:
BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
BAD_TRAP(0xfc) BAD_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff)
BAD_TRAP(0xfc) KGDB_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff)
#endif
.align PAGE_SIZE
......
arch/sparc/kernel/kgdb.c 0 → 100644
View file @ 7cece14a
/* kgdb.c: KGDB support for 32-bit sparc.
*
* Copyright (C) 2008 David S. Miller <davem@davemloft.net>
*/
#include <linux/kgdb.h>
#include <linux/kdebug.h>
#include <asm/kdebug.h>
#include <asm/ptrace.h>
#include <asm/irq.h>
extern unsigned long trapbase;
void pt_regs_to_gdb_regs(unsigned long *gdb_regs, struct pt_regs *regs)
{
struct reg_window *win;
int i;
gdb_regs[GDB_G0] = 0;
for (i = 0; i < 15; i++)
gdb_regs[GDB_G1 + i] = regs->u_regs[UREG_G1 + i];
win = (struct reg_window *) regs->u_regs[UREG_FP];
for (i = 0; i < 8; i++)
gdb_regs[GDB_L0 + i] = win->locals[i];
for (i = 0; i < 8; i++)
gdb_regs[GDB_I0 + i] = win->ins[i];
for (i = GDB_F0; i <= GDB_F31; i++)
gdb_regs[i] = 0;
gdb_regs[GDB_Y] = regs->y;
gdb_regs[GDB_PSR] = regs->psr;
gdb_regs[GDB_WIM] = 0;
gdb_regs[GDB_TBR] = (unsigned long) &trapbase;
gdb_regs[GDB_PC] = regs->pc;
gdb_regs[GDB_NPC] = regs->npc;
gdb_regs[GDB_FSR] = 0;
gdb_regs[GDB_CSR] = 0;
}
void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p)
{
struct thread_info *t = task_thread_info(p);
struct reg_window *win;
int i;
for (i = GDB_G0; i < GDB_G6; i++)
gdb_regs[i] = 0;
gdb_regs[GDB_G6] = (unsigned long) t;
gdb_regs[GDB_G7] = 0;
for (i = GDB_O0; i < GDB_SP; i++)
gdb_regs[i] = 0;
gdb_regs[GDB_SP] = t->ksp;
gdb_regs[GDB_O7] = 0;
win = (struct reg_window *) t->ksp;
for (i = 0; i < 8; i++)
gdb_regs[GDB_L0 + i] = win->locals[i];
for (i = 0; i < 8; i++)
gdb_regs[GDB_I0 + i] = win->ins[i];
for (i = GDB_F0; i <= GDB_F31; i++)
gdb_regs[i] = 0;
gdb_regs[GDB_Y] = 0;
gdb_regs[GDB_PSR] = t->kpsr;
gdb_regs[GDB_WIM] = t->kwim;
gdb_regs[GDB_TBR] = (unsigned long) &trapbase;
gdb_regs[GDB_PC] = t->kpc;
gdb_regs[GDB_NPC] = t->kpc + 4;
gdb_regs[GDB_FSR] = 0;
gdb_regs[GDB_CSR] = 0;
}
void gdb_regs_to_pt_regs(unsigned long *gdb_regs, struct pt_regs *regs)
{
struct reg_window *win;
int i;
for (i = 0; i < 15; i++)
regs->u_regs[UREG_G1 + i] = gdb_regs[GDB_G1 + i];
/* If the PSR register is changing, we have to preserve
* the CWP field, otherwise window save/restore explodes.
*/
if (regs->psr != gdb_regs[GDB_PSR]) {
unsigned long cwp = regs->psr & PSR_CWP;
regs->psr = (gdb_regs[GDB_PSR] & ~PSR_CWP) | cwp;
}
regs->pc = gdb_regs[GDB_PC];
regs->npc = gdb_regs[GDB_NPC];
regs->y = gdb_regs[GDB_Y];
win = (struct reg_window *) regs->u_regs[UREG_FP];
for (i = 0; i < 8; i++)
win->locals[i] = gdb_regs[GDB_L0 + i];
for (i = 0; i < 8; i++)
win->ins[i] = gdb_regs[GDB_I0 + i];
}
int kgdb_arch_handle_exception(int e_vector, int signo, int err_code,
char *remcomInBuffer, char *remcomOutBuffer,
struct pt_regs *linux_regs)
{
unsigned long addr;
char *ptr;
switch (remcomInBuffer[0]) {
case 'c':
/* try to read optional parameter, pc unchanged if no parm */
ptr = &remcomInBuffer[1];
if (kgdb_hex2long(&ptr, &addr)) {
linux_regs->pc = addr;
linux_regs->npc = addr + 4;
}
/* fallthru */
case 'D':
case 'k':
if (linux_regs->pc == (unsigned long) arch_kgdb_breakpoint) {
linux_regs->pc = linux_regs->npc;
linux_regs->npc += 4;
}
return 0;
}
return -1;
}
extern void do_hw_interrupt(struct pt_regs *regs, unsigned long type);
asmlinkage void kgdb_trap(struct pt_regs *regs)
{
unsigned long flags;
if (user_mode(regs)) {
do_hw_interrupt(regs, 0xfd);
return;
}
flushw_all();
local_irq_save(flags);
kgdb_handle_exception(0x172, SIGTRAP, 0, regs);
local_irq_restore(flags);
}
int kgdb_arch_init(void)
{
return 0;
}
void kgdb_arch_exit(void)
{
}
struct kgdb_arch arch_kgdb_ops = {
/* Breakpoint instruction: ta 0x7d */
.gdb_bpt_instr = { 0x91, 0xd0, 0x20, 0x7d },
};
arch/sparc/kernel/sparc-stub.c deleted 100644 → 0
View file @ 95dfec6a
/* $Id: sparc-stub.c,v 1.28 2001/10/30 04:54:21 davem Exp $
* sparc-stub.c: KGDB support for the Linux kernel.
*
* Modifications to run under Linux
* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
*
* This file originally came from the gdb sources, and the
* copyright notices have been retained below.
*/
/****************************************************************************
THIS SOFTWARE IS NOT COPYRIGHTED
HP offers the following for use in the public domain. HP makes no
warranty with regard to the software or its performance and the
user accepts the software "AS IS" with all faults.
HP DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WITH REGARD
TO THIS SOFTWARE INCLUDING BUT NOT LIMITED TO THE WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
****************************************************************************/
/****************************************************************************
* Header: remcom.c,v 1.34 91/03/09 12:29:49 glenne Exp $
*
* Module name: remcom.c $
* Revision: 1.34 $
* Date: 91/03/09 12:29:49 $
* Contributor: Lake Stevens Instrument Division$
*
* Description: low level support for gdb debugger. $
*
* Considerations: only works on target hardware $
*
* Written by: Glenn Engel $
* ModuleState: Experimental $
*
* NOTES: See Below $
*
* Modified for SPARC by Stu Grossman, Cygnus Support.
*
* This code has been extensively tested on the Fujitsu SPARClite demo board.
*
* To enable debugger support, two things need to happen. One, a
* call to set_debug_traps() is necessary in order to allow any breakpoints
* or error conditions to be properly intercepted and reported to gdb.
* Two, a breakpoint needs to be generated to begin communication. This
* is most easily accomplished by a call to breakpoint(). Breakpoint()
* simulates a breakpoint by executing a trap #1.
*
*************
*
* The following gdb commands are supported:
*
* command function Return value
*
* g return the value of the CPU registers hex data or ENN
* G set the value of the CPU registers OK or ENN
*
* mAA..AA,LLLL Read LLLL bytes at address AA..AA hex data or ENN
* MAA..AA,LLLL: Write LLLL bytes at address AA.AA OK or ENN
*
* c Resume at current address SNN ( signal NN)
* cAA..AA Continue at address AA..AA SNN
*
* s Step one instruction SNN
* sAA..AA Step one instruction from AA..AA SNN
*
* k kill
*
* ? What was the last sigval ? SNN (signal NN)
*
* bBB..BB Set baud rate to BB..BB OK or BNN, then sets
* baud rate
*
* All commands and responses are sent with a packet which includes a
* checksum. A packet consists of
*
* $<packet info>#<checksum>.
*
* where
* <packet info> :: <characters representing the command or response>
* <checksum> :: < two hex digits computed as modulo 256 sum of <packetinfo>>
*
* When a packet is received, it is first acknowledged with either '+' or '-'.
* '+' indicates a successful transfer. '-' indicates a failed transfer.
*
* Example:
*
* Host: Reply:
* $m0,10#2a +$00010203040506070809101112131415#42
*
****************************************************************************/
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/smp.h>
#include <linux/smp_lock.h>
#include <asm/system.h>
#include <asm/signal.h>
#include <asm/oplib.h>
#include <asm/head.h>
#include <asm/traps.h>
#include <asm/vac-ops.h>
#include <asm/kgdb.h>
#include <asm/pgalloc.h>
#include <asm/pgtable.h>
#include <asm/cacheflush.h>
/*
*
* external low-level support routines
*/
extern void putDebugChar(char); /* write a single character */
extern char getDebugChar(void); /* read and return a single char */
/*
* BUFMAX defines the maximum number of characters in inbound/outbound buffers
* at least NUMREGBYTES*2 are needed for register packets
*/
#define BUFMAX 2048
static int initialized; /* !0 means we've been initialized */
static const char hexchars[]="0123456789abcdef";
#define NUMREGS 72
/* Number of bytes of registers. */
#define NUMREGBYTES (NUMREGS * 4)
enum regnames {G0, G1, G2, G3, G4, G5, G6, G7,
O0, O1, O2, O3, O4, O5, SP, O7,
L0, L1, L2, L3, L4, L5, L6, L7,
I0, I1, I2, I3, I4, I5, FP, I7,
F0, F1, F2, F3, F4, F5, F6, F7,
F8, F9, F10, F11, F12, F13, F14, F15,
F16, F17, F18, F19, F20, F21, F22, F23,
F24, F25, F26, F27, F28, F29, F30, F31,
Y, PSR, WIM, TBR, PC, NPC, FPSR, CPSR };
extern void trap_low(void); /* In arch/sparc/kernel/entry.S */
unsigned long get_sun4cpte(unsigned long addr)
{
unsigned long entry;
__asm__ __volatile__("\n\tlda [%1] %2, %0\n\t" :
"=r" (entry) :
"r" (addr), "i" (ASI_PTE));
return entry;
}
unsigned long get_sun4csegmap(unsigned long addr)
{
unsigned long entry;
__asm__ __volatile__("\n\tlduba [%1] %2, %0\n\t" :
"=r" (entry) :
"r" (addr), "i" (ASI_SEGMAP));
return entry;
}
#if 0
/* Have to sort this out. This cannot be done after initialization. */
static void flush_cache_all_nop(void) {}
#endif
/* Place where we save old trap entries for restoration */
struct tt_entry kgdb_savettable[256];
typedef void (*trapfunc_t)(void);
/* Helper routine for manipulation of kgdb_savettable */
static inline void copy_ttentry(struct tt_entry *src, struct tt_entry *dest)
{
dest->inst_one = src->inst_one;
dest->inst_two = src->inst_two;
dest->inst_three = src->inst_three;
dest->inst_four = src->inst_four;
}
/* Initialize the kgdb_savettable so that debugging can commence */
static void eh_init(void)
{
int i;
for(i=0; i < 256; i++)
copy_ttentry(&sparc_ttable[i], &kgdb_savettable[i]);
}
/* Install an exception handler for kgdb */
static void exceptionHandler(int tnum, trapfunc_t trap_entry)
{
unsigned long te_addr = (unsigned long) trap_entry;
/* Make new vector */
sparc_ttable[tnum].inst_one =
SPARC_BRANCH((unsigned long) te_addr,
(unsigned long) &sparc_ttable[tnum].inst_one);
sparc_ttable[tnum].inst_two = SPARC_RD_PSR_L0;
sparc_ttable[tnum].inst_three = SPARC_NOP;
sparc_ttable[tnum].inst_four = SPARC_NOP;
}
/* Convert ch from a hex digit to an int */
static int
hex(unsigned char ch)
{
if (ch >= 'a' && ch <= 'f')
return ch-'a'+10;
if (ch >= '0' && ch <= '9')
return ch-'0';
if (ch >= 'A' && ch <= 'F')
return ch-'A'+10;
return -1;
}
/* scan for the sequence $<data>#<checksum> */
static void
getpacket(char *buffer)
{
unsigned char checksum;
unsigned char xmitcsum;
int i;
int count;
unsigned char ch;
do {
/* wait around for the start character, ignore all other characters */
while ((ch = (getDebugChar() & 0x7f)) != '$') ;
checksum = 0;
xmitcsum = -1;
count = 0;
/* now, read until a # or end of buffer is found */
while (count < BUFMAX) {
ch = getDebugChar() & 0x7f;
if (ch == '#')
break;
checksum = checksum + ch;
buffer[count] = ch;
count = count + 1;
}
if (count >= BUFMAX)
continue;
buffer[count] = 0;
if (ch == '#') {
xmitcsum = hex(getDebugChar() & 0x7f) << 4;
xmitcsum |= hex(getDebugChar() & 0x7f);
if (checksum != xmitcsum)
putDebugChar('-'); /* failed checksum */
else {
putDebugChar('+'); /* successful transfer */
/* if a sequence char is present, reply the ID */
if (buffer[2] == ':') {
putDebugChar(buffer[0]);
putDebugChar(buffer[1]);
/* remove sequence chars from buffer */
count = strlen(buffer);
for (i=3; i <= count; i++)
buffer[i-3] = buffer[i];
}
}
}
} while (checksum != xmitcsum);
}
/* send the packet in buffer. */
static void
putpacket(unsigned char *buffer)
{
unsigned char checksum;
int count;
unsigned char ch, recv;
/* $<packet info>#<checksum>. */
do {
putDebugChar('$');
checksum = 0;
count = 0;
while ((ch = buffer[count])) {
putDebugChar(ch);
checksum += ch;
count += 1;
}
putDebugChar('#');
putDebugChar(hexchars[checksum >> 4]);
putDebugChar(hexchars[checksum & 0xf]);
recv = getDebugChar();
} while ((recv & 0x7f) != '+');
}
static char remcomInBuffer[BUFMAX];
static char remcomOutBuffer[BUFMAX];
/* Convert the memory pointed to by mem into hex, placing result in buf.
* Return a pointer to the last char put in buf (null), in case of mem fault,
* return 0.
*/
static unsigned char *
mem2hex(char *mem, char *buf, int count)
{
unsigned char ch;
while (count-- > 0) {
/* This assembler code is basically: ch = *mem++;
* except that we use the SPARC/Linux exception table
* mechanism (see how "fixup" works in kernel_mna_trap_fault)
* to arrange for a "return 0" upon a memory fault
*/
__asm__(
"\n1:\n\t"
"ldub [%0], %1\n\t"
"inc %0\n\t"
".section .fixup,#alloc,#execinstr\n\t"
".align 4\n"
"2:\n\t"
"retl\n\t"
" mov 0, %%o0\n\t"
".section __ex_table, #alloc\n\t"
".align 4\n\t"
".word 1b, 2b\n\t"
".text\n"
: "=r" (mem), "=r" (ch) : "0" (mem));
*buf++ = hexchars[ch >> 4];
*buf++ = hexchars[ch & 0xf];
}
*buf = 0;
return buf;
}
/* convert the hex array pointed to by buf into binary to be placed in mem
* return a pointer to the character AFTER the last byte written.
*/
static char *
hex2mem(char *buf, char *mem, int count)
{
int i;
unsigned char ch;
for (i=0; i<count; i++) {
ch = hex(*buf++) << 4;
ch |= hex(*buf++);
/* Assembler code is *mem++ = ch; with return 0 on fault */
__asm__(
"\n1:\n\t"
"stb %1, [%0]\n\t"
"inc %0\n\t"
".section .fixup,#alloc,#execinstr\n\t"
".align 4\n"
"2:\n\t"
"retl\n\t"
" mov 0, %%o0\n\t"
".section __ex_table, #alloc\n\t"
".align 4\n\t"
".word 1b, 2b\n\t"
".text\n"
: "=r" (mem) : "r" (ch) , "0" (mem));
}
return mem;
}
/* This table contains the mapping between SPARC hardware trap types, and
signals, which are primarily what GDB understands. It also indicates
which hardware traps we need to commandeer when initializing the stub. */
static struct hard_trap_info
{
unsigned char tt; /* Trap type code for SPARC */
unsigned char signo; /* Signal that we map this trap into */
} hard_trap_info[] = {
{SP_TRAP_SBPT, SIGTRAP}, /* ta 1 - Linux/KGDB software breakpoint */
{0, 0} /* Must be last */
};
/* Set up exception handlers for tracing and breakpoints */
void
set_debug_traps(void)
{
struct hard_trap_info *ht;
unsigned long flags;
local_irq_save(flags);
#if 0
/* Have to sort this out. This cannot be done after initialization. */
BTFIXUPSET_CALL(flush_cache_all, flush_cache_all_nop, BTFIXUPCALL_NOP);
#endif
/* Initialize our copy of the Linux Sparc trap table */
eh_init();
for (ht = hard_trap_info; ht->tt && ht->signo; ht++) {
/* Only if it doesn't destroy our fault handlers */
if((ht->tt != SP_TRAP_TFLT) &&
(ht->tt != SP_TRAP_DFLT))
exceptionHandler(ht->tt, trap_low);
}
/* In case GDB is started before us, ack any packets (presumably
* "$?#xx") sitting there.
*
* I've found this code causes more problems than it solves,
* so that's why it's commented out. GDB seems to work fine
* now starting either before or after the kernel -bwb
*/
#if 0
while((c = getDebugChar()) != '$');
while((c = getDebugChar()) != '#');
c = getDebugChar(); /* eat first csum byte */
c = getDebugChar(); /* eat second csum byte */
putDebugChar('+'); /* ack it */
#endif
initialized = 1; /* connect! */
local_irq_restore(flags);
}
/* Convert the SPARC hardware trap type code to a unix signal number. */
static int
computeSignal(int tt)
{
struct hard_trap_info *ht;
for (ht = hard_trap_info; ht->tt && ht->signo; ht++)
if (ht->tt == tt)
return ht->signo;
return SIGHUP; /* default for things we don't know about */
}
/*
* While we find nice hex chars, build an int.
* Return number of chars processed.
*/
static int
hexToInt(char **ptr, int *intValue)
{
int numChars = 0;
int hexValue;
*intValue = 0;
while (**ptr) {
hexValue = hex(**ptr);
if (hexValue < 0)
break;
*intValue = (*intValue << 4) | hexValue;
numChars ++;
(*ptr)++;
}
return (numChars);
}
/*
* This function does all command processing for interfacing to gdb. It
* returns 1 if you should skip the instruction at the trap address, 0
* otherwise.
*/
extern void breakinst(void);
void
handle_exception (unsigned long *registers)
{
int tt; /* Trap type */
int sigval;
int addr;
int length;
char *ptr;
unsigned long *sp;
/* First, we must force all of the windows to be spilled out */
asm("save %sp, -64, %sp\n\t"
"save %sp, -64, %sp\n\t"
"save %sp, -64, %sp\n\t"
"save %sp, -64, %sp\n\t"
"save %sp, -64, %sp\n\t"
"save %sp, -64, %sp\n\t"
"save %sp, -64, %sp\n\t"
"save %sp, -64, %sp\n\t"
"restore\n\t"
"restore\n\t"
"restore\n\t"
"restore\n\t"
"restore\n\t"
"restore\n\t"
"restore\n\t"
"restore\n\t");
lock_kernel();
if (registers[PC] == (unsigned long)breakinst) {
/* Skip over breakpoint trap insn */
registers[PC] = registers[NPC];
registers[NPC] += 4;
}
sp = (unsigned long *)registers[SP];
tt = (registers[TBR] >> 4) & 0xff;
/* reply to host that an exception has occurred */
sigval = computeSignal(tt);
ptr = remcomOutBuffer;
*ptr++ = 'T';
*ptr++ = hexchars[sigval >> 4];
*ptr++ = hexchars[sigval & 0xf];
*ptr++ = hexchars[PC >> 4];
*ptr++ = hexchars[PC & 0xf];
*ptr++ = ':';
ptr = mem2hex((char *)&registers[PC], ptr, 4);
*ptr++ = ';';
*ptr++ = hexchars[FP >> 4];
*ptr++ = hexchars[FP & 0xf];
*ptr++ = ':';
ptr = mem2hex((char *) (sp + 8 + 6), ptr, 4); /* FP */
*ptr++ = ';';
*ptr++ = hexchars[SP >> 4];
*ptr++ = hexchars[SP & 0xf];
*ptr++ = ':';
ptr = mem2hex((char *)&sp, ptr, 4);
*ptr++ = ';';
*ptr++ = hexchars[NPC >> 4];
*ptr++ = hexchars[NPC & 0xf];
*ptr++ = ':';
ptr = mem2hex((char *)&registers[NPC], ptr, 4);
*ptr++ = ';';
*ptr++ = hexchars[O7 >> 4];
*ptr++ = hexchars[O7 & 0xf];
*ptr++ = ':';
ptr = mem2hex((char *)&registers[O7], ptr, 4);
*ptr++ = ';';
*ptr++ = 0;
putpacket(remcomOutBuffer);
/* XXX We may want to add some features dealing with poking the
* XXX page tables, the real ones on the srmmu, and what is currently
* XXX loaded in the sun4/sun4c tlb at this point in time. But this
* XXX also required hacking to the gdb sources directly...
*/
while (1) {
remcomOutBuffer[0] = 0;
getpacket(remcomInBuffer);
switch (remcomInBuffer[0]) {
case '?':
remcomOutBuffer[0] = 'S';
remcomOutBuffer[1] = hexchars[sigval >> 4];
remcomOutBuffer[2] = hexchars[sigval & 0xf];
remcomOutBuffer[3] = 0;
break;
case 'd':
/* toggle debug flag */
break;
case 'g': /* return the value of the CPU registers */
{
ptr = remcomOutBuffer;
/* G & O regs */
ptr = mem2hex((char *)registers, ptr, 16 * 4);
/* L & I regs */
ptr = mem2hex((char *) (sp + 0), ptr, 16 * 4);
/* Floating point */
memset(ptr, '0', 32 * 8);
/* Y, PSR, WIM, TBR, PC, NPC, FPSR, CPSR */
mem2hex((char *)&registers[Y], (ptr + 32 * 4 * 2), (8 * 4));
}
break;
case 'G': /* set the value of the CPU registers - return OK */
{
unsigned long *newsp, psr;
psr = registers[PSR];
ptr = &remcomInBuffer[1];
/* G & O regs */
hex2mem(ptr, (char *)registers, 16 * 4);
/* L & I regs */
hex2mem(ptr + 16 * 4 * 2, (char *) (sp + 0), 16 * 4);
/* Y, PSR, WIM, TBR, PC, NPC, FPSR, CPSR */
hex2mem(ptr + 64 * 4 * 2, (char *)&registers[Y], 8 * 4);
/* See if the stack pointer has moved. If so,
* then copy the saved locals and ins to the
* new location. This keeps the window
* overflow and underflow routines happy.
*/
newsp = (unsigned long *)registers[SP];
if (sp != newsp)
sp = memcpy(newsp, sp, 16 * 4);
/* Don't allow CWP to be modified. */
if (psr != registers[PSR])
registers[PSR] = (psr & 0x1f) | (registers[PSR] & ~0x1f);
strcpy(remcomOutBuffer,"OK");
}
break;
case 'm': /* mAA..AA,LLLL Read LLLL bytes at address AA..AA */
/* Try to read %x,%x. */
ptr = &remcomInBuffer[1];
if (hexToInt(&ptr, &addr)
&& *ptr++ == ','
&& hexToInt(&ptr, &length)) {
if (mem2hex((char *)addr, remcomOutBuffer, length))
break;
strcpy (remcomOutBuffer, "E03");
} else {
strcpy(remcomOutBuffer,"E01");
}
break;
case 'M': /* MAA..AA,LLLL: Write LLLL bytes at address AA.AA return OK */
/* Try to read '%x,%x:'. */
ptr = &remcomInBuffer[1];
if (hexToInt(&ptr, &addr)
&& *ptr++ == ','
&& hexToInt(&ptr, &length)
&& *ptr++ == ':') {
if (hex2mem(ptr, (char *)addr, length)) {
strcpy(remcomOutBuffer, "OK");
} else {
strcpy(remcomOutBuffer, "E03");
}
} else {
strcpy(remcomOutBuffer, "E02");
}
break;
case 'c': /* cAA..AA Continue at address AA..AA(optional) */
/* try to read optional parameter, pc unchanged if no parm */
ptr = &remcomInBuffer[1];
if (hexToInt(&ptr, &addr)) {
registers[PC] = addr;
registers[NPC] = addr + 4;
}
/* Need to flush the instruction cache here, as we may have deposited a
* breakpoint, and the icache probably has no way of knowing that a data ref to
* some location may have changed something that is in the instruction cache.
*/
flush_cache_all();
unlock_kernel();
return;
/* kill the program */
case 'k' : /* do nothing */
break;
case 'r': /* Reset */
asm ("call 0\n\t"
"nop\n\t");
break;
} /* switch */
/* reply to the request */
putpacket(remcomOutBuffer);
} /* while(1) */
}
/* This function will generate a breakpoint exception. It is used at the
beginning of a program to sync up with a debugger and can be used
otherwise as a quick means to stop program execution and "break" into
the debugger. */
void
breakpoint(void)
{
if (!initialized)
return;
/* Again, watch those c-prefixes for ELF kernels */
#if defined(__svr4__) || defined(__ELF__)
asm(".globl breakinst\n"
"breakinst:\n\t"
"ta 1\n");
#else
asm(".globl _breakinst\n"
"_breakinst:\n\t"
"ta 1\n");
#endif
}
arch/sparc/kernel/sun4d_smp.c
View file @ 7cece14a
......@@ -335,37 +335,6 @@ void smp4d_cross_call_irq(void)
ccall_info.processors_out[i] = 1;
}
static int smp4d_stop_cpu_sender;
static void smp4d_stop_cpu(void)
{
int me = hard_smp4d_processor_id();
if (me != smp4d_stop_cpu_sender)
while(1) barrier();
}
/* Cross calls, in order to work efficiently and atomically do all
* the message passing work themselves, only stopcpu and reschedule
* messages come through here.
*/
void smp4d_message_pass(int target, int msg, unsigned long data, int wait)
{
int me = hard_smp4d_processor_id();
SMP_PRINTK(("smp4d_message_pass %d %d %08lx %d\n", target, msg, data, wait));
if (msg == MSG_STOP_CPU && target == MSG_ALL_BUT_SELF) {
unsigned long flags;
static DEFINE_SPINLOCK(stop_cpu_lock);
spin_lock_irqsave(&stop_cpu_lock, flags);
smp4d_stop_cpu_sender = me;
smp4d_cross_call((smpfunc_t)smp4d_stop_cpu, 0, 0, 0, 0, 0);
spin_unlock_irqrestore(&stop_cpu_lock, flags);
}
printk("Yeeee, trying to send SMP msg(%d) to %d on cpu %d\n", msg, target, me);
panic("Bogon SMP message pass.");
}
void smp4d_percpu_timer_interrupt(struct pt_regs *regs)
{
struct pt_regs *old_regs;
......@@ -439,7 +408,6 @@ void __init sun4d_init_smp(void)
BTFIXUPSET_BLACKBOX(hard_smp_processor_id, smp4d_blackbox_id);
BTFIXUPSET_BLACKBOX(load_current, smp4d_blackbox_current);
BTFIXUPSET_CALL(smp_cross_call, smp4d_cross_call, BTFIXUPCALL_NORM);
BTFIXUPSET_CALL(smp_message_pass, smp4d_message_pass, BTFIXUPCALL_NORM);
BTFIXUPSET_CALL(__hard_smp_processor_id, __smp4d_processor_id, BTFIXUPCALL_NORM);
for (i = 0; i < NR_CPUS; i++) {
......
arch/sparc/kernel/sun4m_smp.c
View file @ 7cece14a
......@@ -34,8 +34,6 @@
#include "irq.h"
#define IRQ_RESCHEDULE 13
#define IRQ_STOP_CPU 14
#define IRQ_CROSS_CALL 15
extern ctxd_t *srmmu_ctx_table_phys;
......@@ -232,48 +230,6 @@ void smp4m_irq_rotate(int cpu)
set_irq_udt(next);
}
/* Cross calls, in order to work efficiently and atomically do all
* the message passing work themselves, only stopcpu and reschedule
* messages come through here.
*/
void smp4m_message_pass(int target, int msg, unsigned long data, int wait)
{
static unsigned long smp_cpu_in_msg[NR_CPUS];
cpumask_t mask;
int me = smp_processor_id();
int irq, i;
if(msg == MSG_RESCHEDULE) {
irq = IRQ_RESCHEDULE;
if(smp_cpu_in_msg[me])
return;
} else if(msg == MSG_STOP_CPU) {
irq = IRQ_STOP_CPU;
} else {
goto barf;
}
smp_cpu_in_msg[me]++;
if(target == MSG_ALL_BUT_SELF || target == MSG_ALL) {
mask = cpu_online_map;
if(target == MSG_ALL_BUT_SELF)
cpu_clear(me, mask);
for(i = 0; i < 4; i++) {
if (cpu_isset(i, mask))
set_cpu_int(i, irq);
}
} else {
set_cpu_int(target, irq);
}
smp_cpu_in_msg[me]--;
return;
barf:
printk("Yeeee, trying to send SMP msg(%d) on cpu %d\n", msg, me);
panic("Bogon SMP message pass.");
}
static struct smp_funcall {
smpfunc_t func;
unsigned long arg1;
......@@ -413,6 +369,5 @@ void __init sun4m_init_smp(void)
BTFIXUPSET_BLACKBOX(hard_smp_processor_id, smp4m_blackbox_id);
BTFIXUPSET_BLACKBOX(load_current, smp4m_blackbox_current);
BTFIXUPSET_CALL(smp_cross_call, smp4m_cross_call, BTFIXUPCALL_NORM);
BTFIXUPSET_CALL(smp_message_pass, smp4m_message_pass, BTFIXUPCALL_NORM);
BTFIXUPSET_CALL(__hard_smp_processor_id, __smp4m_processor_id, BTFIXUPCALL_NORM);
}
arch/sparc64/Kconfig
View file @ 7cece14a
......@@ -13,6 +13,7 @@ config SPARC64
default y
select HAVE_IDE
select HAVE_LMB
select HAVE_ARCH_KGDB
config GENERIC_TIME
bool
......
arch/sparc64/kernel/Makefile
View file @ 7cece14a
......@@ -29,3 +29,4 @@ obj-$(CONFIG_SUN_LDOMS) += ldc.o vio.o viohs.o ds.o
obj-$(CONFIG_AUDIT) += audit.o
obj-$(CONFIG_AUDIT)$(CONFIG_COMPAT) += compat_audit.o
obj-y += $(obj-yy)
obj-$(CONFIG_KGDB) += kgdb.o
arch/sparc64/kernel/cherrs.S 0 → 100644
View file @ 7cece14a
/* These get patched into the trap table at boot time
* once we know we have a cheetah processor.
*/
.globl cheetah_fecc_trap_vector
.type cheetah_fecc_trap_vector,#function
cheetah_fecc_trap_vector:
membar #Sync
ldxa [%g0] ASI_DCU_CONTROL_REG, %g1
andn %g1, DCU_DC | DCU_IC, %g1
stxa %g1, [%g0] ASI_DCU_CONTROL_REG
membar #Sync
sethi %hi(cheetah_fast_ecc), %g2
jmpl %g2 + %lo(cheetah_fast_ecc), %g0
mov 0, %g1
.size cheetah_fecc_trap_vector,.-cheetah_fecc_trap_vector
.globl cheetah_fecc_trap_vector_tl1
.type cheetah_fecc_trap_vector_tl1,#function
cheetah_fecc_trap_vector_tl1:
membar #Sync
ldxa [%g0] ASI_DCU_CONTROL_REG, %g1
andn %g1, DCU_DC | DCU_IC, %g1
stxa %g1, [%g0] ASI_DCU_CONTROL_REG
membar #Sync
sethi %hi(cheetah_fast_ecc), %g2
jmpl %g2 + %lo(cheetah_fast_ecc), %g0
mov 1, %g1
.size cheetah_fecc_trap_vector_tl1,.-cheetah_fecc_trap_vector_tl1
.globl cheetah_cee_trap_vector
.type cheetah_cee_trap_vector,#function
cheetah_cee_trap_vector:
membar #Sync
ldxa [%g0] ASI_DCU_CONTROL_REG, %g1
andn %g1, DCU_IC, %g1
stxa %g1, [%g0] ASI_DCU_CONTROL_REG
membar #Sync
sethi %hi(cheetah_cee), %g2
jmpl %g2 + %lo(cheetah_cee), %g0
mov 0, %g1
.size cheetah_cee_trap_vector,.-cheetah_cee_trap_vector
.globl cheetah_cee_trap_vector_tl1
.type cheetah_cee_trap_vector_tl1,#function
cheetah_cee_trap_vector_tl1:
membar #Sync
ldxa [%g0] ASI_DCU_CONTROL_REG, %g1
andn %g1, DCU_IC, %g1
stxa %g1, [%g0] ASI_DCU_CONTROL_REG
membar #Sync
sethi %hi(cheetah_cee), %g2
jmpl %g2 + %lo(cheetah_cee), %g0
mov 1, %g1
.size cheetah_cee_trap_vector_tl1,.-cheetah_cee_trap_vector_tl1
.globl cheetah_deferred_trap_vector
.type cheetah_deferred_trap_vector,#function
cheetah_deferred_trap_vector:
membar #Sync
ldxa [%g0] ASI_DCU_CONTROL_REG, %g1;
andn %g1, DCU_DC | DCU_IC, %g1;
stxa %g1, [%g0] ASI_DCU_CONTROL_REG;
membar #Sync;
sethi %hi(cheetah_deferred_trap), %g2
jmpl %g2 + %lo(cheetah_deferred_trap), %g0
mov 0, %g1
.size cheetah_deferred_trap_vector,.-cheetah_deferred_trap_vector
.globl cheetah_deferred_trap_vector_tl1
.type cheetah_deferred_trap_vector_tl1,#function
cheetah_deferred_trap_vector_tl1:
membar #Sync;
ldxa [%g0] ASI_DCU_CONTROL_REG, %g1;
andn %g1, DCU_DC | DCU_IC, %g1;
stxa %g1, [%g0] ASI_DCU_CONTROL_REG;
membar #Sync;
sethi %hi(cheetah_deferred_trap), %g2
jmpl %g2 + %lo(cheetah_deferred_trap), %g0
mov 1, %g1
.size cheetah_deferred_trap_vector_tl1,.-cheetah_deferred_trap_vector_tl1
/* Cheetah+ specific traps. These are for the new I/D cache parity
* error traps. The first argument to cheetah_plus_parity_handler
* is encoded as follows:
*
* Bit0: 0=dcache,1=icache
* Bit1: 0=recoverable,1=unrecoverable
*/
.globl cheetah_plus_dcpe_trap_vector
.type cheetah_plus_dcpe_trap_vector,#function
cheetah_plus_dcpe_trap_vector:
membar #Sync
sethi %hi(do_cheetah_plus_data_parity), %g7
jmpl %g7 + %lo(do_cheetah_plus_data_parity), %g0
nop
nop
nop
nop
nop
.size cheetah_plus_dcpe_trap_vector,.-cheetah_plus_dcpe_trap_vector
.type do_cheetah_plus_data_parity,#function
do_cheetah_plus_data_parity:
rdpr %pil, %g2
wrpr %g0, 15, %pil
ba,pt %xcc, etrap_irq
rd %pc, %g7
#ifdef CONFIG_TRACE_IRQFLAGS
call trace_hardirqs_off
nop
#endif
mov 0x0, %o0
call cheetah_plus_parity_error
add %sp, PTREGS_OFF, %o1
ba,a,pt %xcc, rtrap_irq
.size do_cheetah_plus_data_parity,.-do_cheetah_plus_data_parity
.globl cheetah_plus_dcpe_trap_vector_tl1
.type cheetah_plus_dcpe_trap_vector_tl1,#function
cheetah_plus_dcpe_trap_vector_tl1:
membar #Sync
wrpr PSTATE_IG | PSTATE_PEF | PSTATE_PRIV, %pstate
sethi %hi(do_dcpe_tl1), %g3
jmpl %g3 + %lo(do_dcpe_tl1), %g0
nop
nop
nop
nop
.size cheetah_plus_dcpe_trap_vector_tl1,.-cheetah_plus_dcpe_trap_vector_tl1
.globl cheetah_plus_icpe_trap_vector
.type cheetah_plus_icpe_trap_vector,#function
cheetah_plus_icpe_trap_vector:
membar #Sync
sethi %hi(do_cheetah_plus_insn_parity), %g7
jmpl %g7 + %lo(do_cheetah_plus_insn_parity), %g0
nop
nop
nop
nop
nop
.size cheetah_plus_icpe_trap_vector,.-cheetah_plus_icpe_trap_vector
.type do_cheetah_plus_insn_parity,#function
do_cheetah_plus_insn_parity:
rdpr %pil, %g2
wrpr %g0, 15, %pil
ba,pt %xcc, etrap_irq
rd %pc, %g7
#ifdef CONFIG_TRACE_IRQFLAGS
call trace_hardirqs_off
nop
#endif
mov 0x1, %o0
call cheetah_plus_parity_error
add %sp, PTREGS_OFF, %o1
ba,a,pt %xcc, rtrap_irq
.size do_cheetah_plus_insn_parity,.-do_cheetah_plus_insn_parity
.globl cheetah_plus_icpe_trap_vector_tl1
.type cheetah_plus_icpe_trap_vector_tl1,#function
cheetah_plus_icpe_trap_vector_tl1:
membar #Sync
wrpr PSTATE_IG | PSTATE_PEF | PSTATE_PRIV, %pstate
sethi %hi(do_icpe_tl1), %g3
jmpl %g3 + %lo(do_icpe_tl1), %g0
nop
nop
nop
nop
.size cheetah_plus_icpe_trap_vector_tl1,.-cheetah_plus_icpe_trap_vector_tl1
/* If we take one of these traps when tl >= 1, then we
* jump to interrupt globals. If some trap level above us
* was also using interrupt globals, we cannot recover.
* We may use all interrupt global registers except %g6.
*/
.globl do_dcpe_tl1
.type do_dcpe_tl1,#function
do_dcpe_tl1:
rdpr %tl, %g1 ! Save original trap level
mov 1, %g2 ! Setup TSTATE checking loop
sethi %hi(TSTATE_IG), %g3 ! TSTATE mask bit
1: wrpr %g2, %tl ! Set trap level to check
rdpr %tstate, %g4 ! Read TSTATE for this level
andcc %g4, %g3, %g0 ! Interrupt globals in use?
bne,a,pn %xcc, do_dcpe_tl1_fatal ! Yep, irrecoverable
wrpr %g1, %tl ! Restore original trap level
add %g2, 1, %g2 ! Next trap level
cmp %g2, %g1 ! Hit them all yet?
ble,pt %icc, 1b ! Not yet
nop
wrpr %g1, %tl ! Restore original trap level
do_dcpe_tl1_nonfatal: /* Ok we may use interrupt globals safely. */
sethi %hi(dcache_parity_tl1_occurred), %g2
lduw [%g2 + %lo(dcache_parity_tl1_occurred)], %g1
add %g1, 1, %g1
stw %g1, [%g2 + %lo(dcache_parity_tl1_occurred)]
/* Reset D-cache parity */
sethi %hi(1 << 16), %g1 ! D-cache size
mov (1 << 5), %g2 ! D-cache line size
sub %g1, %g2, %g1 ! Move down 1 cacheline
1: srl %g1, 14, %g3 ! Compute UTAG
membar #Sync
stxa %g3, [%g1] ASI_DCACHE_UTAG
membar #Sync
sub %g2, 8, %g3 ! 64-bit data word within line
2: membar #Sync
stxa %g0, [%g1 + %g3] ASI_DCACHE_DATA
membar #Sync
subcc %g3, 8, %g3 ! Next 64-bit data word
bge,pt %icc, 2b
nop
subcc %g1, %g2, %g1 ! Next cacheline
bge,pt %icc, 1b
nop
ba,pt %xcc, dcpe_icpe_tl1_common
nop
do_dcpe_tl1_fatal:
sethi %hi(1f), %g7
ba,pt %xcc, etraptl1
1: or %g7, %lo(1b), %g7
mov 0x2, %o0
call cheetah_plus_parity_error
add %sp, PTREGS_OFF, %o1
ba,pt %xcc, rtrap
nop
.size do_dcpe_tl1,.-do_dcpe_tl1
.globl do_icpe_tl1
.type do_icpe_tl1,#function
do_icpe_tl1:
rdpr %tl, %g1 ! Save original trap level
mov 1, %g2 ! Setup TSTATE checking loop
sethi %hi(TSTATE_IG), %g3 ! TSTATE mask bit
1: wrpr %g2, %tl ! Set trap level to check
rdpr %tstate, %g4 ! Read TSTATE for this level
andcc %g4, %g3, %g0 ! Interrupt globals in use?
bne,a,pn %xcc, do_icpe_tl1_fatal ! Yep, irrecoverable
wrpr %g1, %tl ! Restore original trap level
add %g2, 1, %g2 ! Next trap level
cmp %g2, %g1 ! Hit them all yet?
ble,pt %icc, 1b ! Not yet
nop
wrpr %g1, %tl ! Restore original trap level
do_icpe_tl1_nonfatal: /* Ok we may use interrupt globals safely. */
sethi %hi(icache_parity_tl1_occurred), %g2
lduw [%g2 + %lo(icache_parity_tl1_occurred)], %g1
add %g1, 1, %g1
stw %g1, [%g2 + %lo(icache_parity_tl1_occurred)]
/* Flush I-cache */
sethi %hi(1 << 15), %g1 ! I-cache size
mov (1 << 5), %g2 ! I-cache line size
sub %g1, %g2, %g1
1: or %g1, (2 << 3), %g3
stxa %g0, [%g3] ASI_IC_TAG
membar #Sync
subcc %g1, %g2, %g1
bge,pt %icc, 1b
nop
ba,pt %xcc, dcpe_icpe_tl1_common
nop
do_icpe_tl1_fatal:
sethi %hi(1f), %g7
ba,pt %xcc, etraptl1
1: or %g7, %lo(1b), %g7
mov 0x3, %o0
call cheetah_plus_parity_error
add %sp, PTREGS_OFF, %o1
ba,pt %xcc, rtrap
nop
.size do_icpe_tl1,.-do_icpe_tl1
.type dcpe_icpe_tl1_common,#function
dcpe_icpe_tl1_common:
/* Flush D-cache, re-enable D/I caches in DCU and finally
* retry the trapping instruction.
*/
sethi %hi(1 << 16), %g1 ! D-cache size
mov (1 << 5), %g2 ! D-cache line size
sub %g1, %g2, %g1
1: stxa %g0, [%g1] ASI_DCACHE_TAG
membar #Sync
subcc %g1, %g2, %g1
bge,pt %icc, 1b
nop
ldxa [%g0] ASI_DCU_CONTROL_REG, %g1
or %g1, (DCU_DC | DCU_IC), %g1
stxa %g1, [%g0] ASI_DCU_CONTROL_REG
membar #Sync
retry
.size dcpe_icpe_tl1_common,.-dcpe_icpe_tl1_common
/* Capture I/D/E-cache state into per-cpu error scoreboard.
*
* %g1: (TL>=0) ? 1 : 0
* %g2: scratch
* %g3: scratch
* %g4: AFSR
* %g5: AFAR
* %g6: unused, will have current thread ptr after etrap
* %g7: scratch
*/
.type __cheetah_log_error,#function
__cheetah_log_error:
/* Put "TL1" software bit into AFSR. */
and %g1, 0x1, %g1
sllx %g1, 63, %g2
or %g4, %g2, %g4
/* Get log entry pointer for this cpu at this trap level. */
BRANCH_IF_JALAPENO(g2,g3,50f)
ldxa [%g0] ASI_SAFARI_CONFIG, %g2
srlx %g2, 17, %g2
ba,pt %xcc, 60f
and %g2, 0x3ff, %g2
50: ldxa [%g0] ASI_JBUS_CONFIG, %g2
srlx %g2, 17, %g2
and %g2, 0x1f, %g2
60: sllx %g2, 9, %g2
sethi %hi(cheetah_error_log), %g3
ldx [%g3 + %lo(cheetah_error_log)], %g3
brz,pn %g3, 80f
nop
add %g3, %g2, %g3
sllx %g1, 8, %g1
add %g3, %g1, %g1
/* %g1 holds pointer to the top of the logging scoreboard */
ldx [%g1 + 0x0], %g7
cmp %g7, -1
bne,pn %xcc, 80f
nop
stx %g4, [%g1 + 0x0]
stx %g5, [%g1 + 0x8]
add %g1, 0x10, %g1
/* %g1 now points to D-cache logging area */
set 0x3ff8, %g2 /* DC_addr mask */
and %g5, %g2, %g2 /* DC_addr bits of AFAR */
srlx %g5, 12, %g3
or %g3, 1, %g3 /* PHYS tag + valid */
10: ldxa [%g2] ASI_DCACHE_TAG, %g7
cmp %g3, %g7 /* TAG match? */
bne,pt %xcc, 13f
nop
/* Yep, what we want, capture state. */
stx %g2, [%g1 + 0x20]
stx %g7, [%g1 + 0x28]
/* A membar Sync is required before and after utag access. */
membar #Sync
ldxa [%g2] ASI_DCACHE_UTAG, %g7
membar #Sync
stx %g7, [%g1 + 0x30]
ldxa [%g2] ASI_DCACHE_SNOOP_TAG, %g7
stx %g7, [%g1 + 0x38]
clr %g3
12: ldxa [%g2 + %g3] ASI_DCACHE_DATA, %g7
stx %g7, [%g1]
add %g3, (1 << 5), %g3
cmp %g3, (4 << 5)
bl,pt %xcc, 12b
add %g1, 0x8, %g1
ba,pt %xcc, 20f
add %g1, 0x20, %g1
13: sethi %hi(1 << 14), %g7
add %g2, %g7, %g2
srlx %g2, 14, %g7
cmp %g7, 4
bl,pt %xcc, 10b
nop
add %g1, 0x40, %g1
/* %g1 now points to I-cache logging area */
20: set 0x1fe0, %g2 /* IC_addr mask */
and %g5, %g2, %g2 /* IC_addr bits of AFAR */
sllx %g2, 1, %g2 /* IC_addr[13:6]==VA[12:5] */
srlx %g5, (13 - 8), %g3 /* Make PTAG */
andn %g3, 0xff, %g3 /* Mask off undefined bits */
21: ldxa [%g2] ASI_IC_TAG, %g7
andn %g7, 0xff, %g7
cmp %g3, %g7
bne,pt %xcc, 23f
nop
/* Yep, what we want, capture state. */
stx %g2, [%g1 + 0x40]
stx %g7, [%g1 + 0x48]
add %g2, (1 << 3), %g2
ldxa [%g2] ASI_IC_TAG, %g7
add %g2, (1 << 3), %g2
stx %g7, [%g1 + 0x50]
ldxa [%g2] ASI_IC_TAG, %g7
add %g2, (1 << 3), %g2
stx %g7, [%g1 + 0x60]
ldxa [%g2] ASI_IC_TAG, %g7
stx %g7, [%g1 + 0x68]
sub %g2, (3 << 3), %g2
ldxa [%g2] ASI_IC_STAG, %g7
stx %g7, [%g1 + 0x58]
clr %g3
srlx %g2, 2, %g2
22: ldxa [%g2 + %g3] ASI_IC_INSTR, %g7
stx %g7, [%g1]
add %g3, (1 << 3), %g3
cmp %g3, (8 << 3)
bl,pt %xcc, 22b
add %g1, 0x8, %g1
ba,pt %xcc, 30f
add %g1, 0x30, %g1
23: sethi %hi(1 << 14), %g7
add %g2, %g7, %g2
srlx %g2, 14, %g7
cmp %g7, 4
bl,pt %xcc, 21b
nop
add %g1, 0x70, %g1
/* %g1 now points to E-cache logging area */
30: andn %g5, (32 - 1), %g2
stx %g2, [%g1 + 0x20]
ldxa [%g2] ASI_EC_TAG_DATA, %g7
stx %g7, [%g1 + 0x28]
ldxa [%g2] ASI_EC_R, %g0
clr %g3
31: ldxa [%g3] ASI_EC_DATA, %g7
stx %g7, [%g1 + %g3]
add %g3, 0x8, %g3
cmp %g3, 0x20
bl,pt %xcc, 31b
nop
80:
rdpr %tt, %g2
cmp %g2, 0x70
be c_fast_ecc
cmp %g2, 0x63
be c_cee
nop
ba,pt %xcc, c_deferred
.size __cheetah_log_error,.-__cheetah_log_error
/* Cheetah FECC trap handling, we get here from tl{0,1}_fecc
* in the trap table. That code has done a memory barrier
* and has disabled both the I-cache and D-cache in the DCU
* control register. The I-cache is disabled so that we may
* capture the corrupted cache line, and the D-cache is disabled
* because corrupt data may have been placed there and we don't
* want to reference it.
*
* %g1 is one if this trap occurred at %tl >= 1.
*
* Next, we turn off error reporting so that we don't recurse.
*/
.globl cheetah_fast_ecc
.type cheetah_fast_ecc,#function
cheetah_fast_ecc:
ldxa [%g0] ASI_ESTATE_ERROR_EN, %g2
andn %g2, ESTATE_ERROR_NCEEN | ESTATE_ERROR_CEEN, %g2
stxa %g2, [%g0] ASI_ESTATE_ERROR_EN
membar #Sync
/* Fetch and clear AFSR/AFAR */
ldxa [%g0] ASI_AFSR, %g4
ldxa [%g0] ASI_AFAR, %g5
stxa %g4, [%g0] ASI_AFSR
membar #Sync
ba,pt %xcc, __cheetah_log_error
nop
.size cheetah_fast_ecc,.-cheetah_fast_ecc
.type c_fast_ecc,#function
c_fast_ecc:
rdpr %pil, %g2
wrpr %g0, 15, %pil
ba,pt %xcc, etrap_irq
rd %pc, %g7
#ifdef CONFIG_TRACE_IRQFLAGS
call trace_hardirqs_off
nop
#endif
mov %l4, %o1
mov %l5, %o2
call cheetah_fecc_handler
add %sp, PTREGS_OFF, %o0
ba,a,pt %xcc, rtrap_irq
.size c_fast_ecc,.-c_fast_ecc
/* Our caller has disabled I-cache and performed membar Sync. */
.globl cheetah_cee
.type cheetah_cee,#function
cheetah_cee:
ldxa [%g0] ASI_ESTATE_ERROR_EN, %g2
andn %g2, ESTATE_ERROR_CEEN, %g2
stxa %g2, [%g0] ASI_ESTATE_ERROR_EN
membar #Sync
/* Fetch and clear AFSR/AFAR */
ldxa [%g0] ASI_AFSR, %g4
ldxa [%g0] ASI_AFAR, %g5
stxa %g4, [%g0] ASI_AFSR
membar #Sync
ba,pt %xcc, __cheetah_log_error
nop
.size cheetah_cee,.-cheetah_cee
.type c_cee,#function
c_cee:
rdpr %pil, %g2
wrpr %g0, 15, %pil
ba,pt %xcc, etrap_irq
rd %pc, %g7
#ifdef CONFIG_TRACE_IRQFLAGS
call trace_hardirqs_off
nop
#endif
mov %l4, %o1
mov %l5, %o2
call cheetah_cee_handler
add %sp, PTREGS_OFF, %o0
ba,a,pt %xcc, rtrap_irq
.size c_cee,.-c_cee
/* Our caller has disabled I-cache+D-cache and performed membar Sync. */
.globl cheetah_deferred_trap
.type cheetah_deferred_trap,#function
cheetah_deferred_trap:
ldxa [%g0] ASI_ESTATE_ERROR_EN, %g2
andn %g2, ESTATE_ERROR_NCEEN | ESTATE_ERROR_CEEN, %g2
stxa %g2, [%g0] ASI_ESTATE_ERROR_EN
membar #Sync
/* Fetch and clear AFSR/AFAR */
ldxa [%g0] ASI_AFSR, %g4
ldxa [%g0] ASI_AFAR, %g5
stxa %g4, [%g0] ASI_AFSR
membar #Sync
ba,pt %xcc, __cheetah_log_error
nop
.size cheetah_deferred_trap,.-cheetah_deferred_trap
.type c_deferred,#function
c_deferred:
rdpr %pil, %g2
wrpr %g0, 15, %pil
ba,pt %xcc, etrap_irq
rd %pc, %g7
#ifdef CONFIG_TRACE_IRQFLAGS
call trace_hardirqs_off
nop
#endif
mov %l4, %o1
mov %l5, %o2
call cheetah_deferred_handler
add %sp, PTREGS_OFF, %o0
ba,a,pt %xcc, rtrap_irq
.size c_deferred,.-c_deferred
arch/sparc64/kernel/fpu_traps.S 0 → 100644
View file @ 7cece14a
/* This is trivial with the new code... */
.globl do_fpdis
.type do_fpdis,#function
do_fpdis:
sethi %hi(TSTATE_PEF), %g4
rdpr %tstate, %g5
andcc %g5, %g4, %g0
be,pt %xcc, 1f
nop
rd %fprs, %g5
andcc %g5, FPRS_FEF, %g0
be,pt %xcc, 1f
nop
/* Legal state when DCR_IFPOE is set in Cheetah %dcr. */
sethi %hi(109f), %g7
ba,pt %xcc, etrap
109: or %g7, %lo(109b), %g7
add %g0, %g0, %g0
ba,a,pt %xcc, rtrap
1: TRAP_LOAD_THREAD_REG(%g6, %g1)
ldub [%g6 + TI_FPSAVED], %g5
wr %g0, FPRS_FEF, %fprs
andcc %g5, FPRS_FEF, %g0
be,a,pt %icc, 1f
clr %g7
ldx [%g6 + TI_GSR], %g7
1: andcc %g5, FPRS_DL, %g0
bne,pn %icc, 2f
fzero %f0
andcc %g5, FPRS_DU, %g0
bne,pn %icc, 1f
fzero %f2
faddd %f0, %f2, %f4
fmuld %f0, %f2, %f6
faddd %f0, %f2, %f8
fmuld %f0, %f2, %f10
faddd %f0, %f2, %f12
fmuld %f0, %f2, %f14
faddd %f0, %f2, %f16
fmuld %f0, %f2, %f18
faddd %f0, %f2, %f20
fmuld %f0, %f2, %f22
faddd %f0, %f2, %f24
fmuld %f0, %f2, %f26
faddd %f0, %f2, %f28
fmuld %f0, %f2, %f30
faddd %f0, %f2, %f32
fmuld %f0, %f2, %f34
faddd %f0, %f2, %f36
fmuld %f0, %f2, %f38
faddd %f0, %f2, %f40
fmuld %f0, %f2, %f42
faddd %f0, %f2, %f44
fmuld %f0, %f2, %f46
faddd %f0, %f2, %f48
fmuld %f0, %f2, %f50
faddd %f0, %f2, %f52
fmuld %f0, %f2, %f54
faddd %f0, %f2, %f56
fmuld %f0, %f2, %f58
b,pt %xcc, fpdis_exit2
faddd %f0, %f2, %f60
1: mov SECONDARY_CONTEXT, %g3
add %g6, TI_FPREGS + 0x80, %g1
faddd %f0, %f2, %f4
fmuld %f0, %f2, %f6
661: ldxa [%g3] ASI_DMMU, %g5
.section .sun4v_1insn_patch, "ax"
.word 661b
ldxa [%g3] ASI_MMU, %g5
.previous
sethi %hi(sparc64_kern_sec_context), %g2
ldx [%g2 + %lo(sparc64_kern_sec_context)], %g2
661: stxa %g2, [%g3] ASI_DMMU
.section .sun4v_1insn_patch, "ax"
.word 661b
stxa %g2, [%g3] ASI_MMU
.previous
membar #Sync
add %g6, TI_FPREGS + 0xc0, %g2
faddd %f0, %f2, %f8
fmuld %f0, %f2, %f10
membar #Sync
ldda [%g1] ASI_BLK_S, %f32
ldda [%g2] ASI_BLK_S, %f48
membar #Sync
faddd %f0, %f2, %f12
fmuld %f0, %f2, %f14
faddd %f0, %f2, %f16
fmuld %f0, %f2, %f18
faddd %f0, %f2, %f20
fmuld %f0, %f2, %f22
faddd %f0, %f2, %f24
fmuld %f0, %f2, %f26
faddd %f0, %f2, %f28
fmuld %f0, %f2, %f30
b,pt %xcc, fpdis_exit
nop
2: andcc %g5, FPRS_DU, %g0
bne,pt %icc, 3f
fzero %f32
mov SECONDARY_CONTEXT, %g3
fzero %f34
661: ldxa [%g3] ASI_DMMU, %g5
.section .sun4v_1insn_patch, "ax"
.word 661b
ldxa [%g3] ASI_MMU, %g5
.previous
add %g6, TI_FPREGS, %g1
sethi %hi(sparc64_kern_sec_context), %g2
ldx [%g2 + %lo(sparc64_kern_sec_context)], %g2
661: stxa %g2, [%g3] ASI_DMMU
.section .sun4v_1insn_patch, "ax"
.word 661b
stxa %g2, [%g3] ASI_MMU
.previous
membar #Sync
add %g6, TI_FPREGS + 0x40, %g2
faddd %f32, %f34, %f36
fmuld %f32, %f34, %f38
membar #Sync
ldda [%g1] ASI_BLK_S, %f0
ldda [%g2] ASI_BLK_S, %f16
membar #Sync
faddd %f32, %f34, %f40
fmuld %f32, %f34, %f42
faddd %f32, %f34, %f44
fmuld %f32, %f34, %f46
faddd %f32, %f34, %f48
fmuld %f32, %f34, %f50
faddd %f32, %f34, %f52
fmuld %f32, %f34, %f54
faddd %f32, %f34, %f56
fmuld %f32, %f34, %f58
faddd %f32, %f34, %f60
fmuld %f32, %f34, %f62
ba,pt %xcc, fpdis_exit
nop
3: mov SECONDARY_CONTEXT, %g3
add %g6, TI_FPREGS, %g1
661: ldxa [%g3] ASI_DMMU, %g5
.section .sun4v_1insn_patch, "ax"
.word 661b
ldxa [%g3] ASI_MMU, %g5
.previous
sethi %hi(sparc64_kern_sec_context), %g2
ldx [%g2 + %lo(sparc64_kern_sec_context)], %g2
661: stxa %g2, [%g3] ASI_DMMU
.section .sun4v_1insn_patch, "ax"
.word 661b
stxa %g2, [%g3] ASI_MMU
.previous
membar #Sync
mov 0x40, %g2
membar #Sync
ldda [%g1] ASI_BLK_S, %f0
ldda [%g1 + %g2] ASI_BLK_S, %f16
add %g1, 0x80, %g1
ldda [%g1] ASI_BLK_S, %f32
ldda [%g1 + %g2] ASI_BLK_S, %f48
membar #Sync
fpdis_exit:
661: stxa %g5, [%g3] ASI_DMMU
.section .sun4v_1insn_patch, "ax"
.word 661b
stxa %g5, [%g3] ASI_MMU
.previous
membar #Sync
fpdis_exit2:
wr %g7, 0, %gsr
ldx [%g6 + TI_XFSR], %fsr
rdpr %tstate, %g3
or %g3, %g4, %g3 ! anal...
wrpr %g3, %tstate
wr %g0, FPRS_FEF, %fprs ! clean DU/DL bits
retry
.size do_fpdis,.-do_fpdis
.align 32
.type fp_other_bounce,#function
fp_other_bounce:
call do_fpother
add %sp, PTREGS_OFF, %o0
ba,pt %xcc, rtrap
nop
.size fp_other_bounce,.-fp_other_bounce
.align 32
.globl do_fpother_check_fitos
.type do_fpother_check_fitos,#function
do_fpother_check_fitos:
TRAP_LOAD_THREAD_REG(%g6, %g1)
sethi %hi(fp_other_bounce - 4), %g7
or %g7, %lo(fp_other_bounce - 4), %g7
/* NOTE: Need to preserve %g7 until we fully commit
* to the fitos fixup.
*/
stx %fsr, [%g6 + TI_XFSR]
rdpr %tstate, %g3
andcc %g3, TSTATE_PRIV, %g0
bne,pn %xcc, do_fptrap_after_fsr
nop
ldx [%g6 + TI_XFSR], %g3
srlx %g3, 14, %g1
and %g1, 7, %g1
cmp %g1, 2 ! Unfinished FP-OP
bne,pn %xcc, do_fptrap_after_fsr
sethi %hi(1 << 23), %g1 ! Inexact
andcc %g3, %g1, %g0
bne,pn %xcc, do_fptrap_after_fsr
rdpr %tpc, %g1
lduwa [%g1] ASI_AIUP, %g3 ! This cannot ever fail
#define FITOS_MASK 0xc1f83fe0
#define FITOS_COMPARE 0x81a01880
sethi %hi(FITOS_MASK), %g1
or %g1, %lo(FITOS_MASK), %g1
and %g3, %g1, %g1
sethi %hi(FITOS_COMPARE), %g2
or %g2, %lo(FITOS_COMPARE), %g2
cmp %g1, %g2
bne,pn %xcc, do_fptrap_after_fsr
nop
std %f62, [%g6 + TI_FPREGS + (62 * 4)]
sethi %hi(fitos_table_1), %g1
and %g3, 0x1f, %g2
or %g1, %lo(fitos_table_1), %g1
sllx %g2, 2, %g2
jmpl %g1 + %g2, %g0
ba,pt %xcc, fitos_emul_continue
fitos_table_1:
fitod %f0, %f62
fitod %f1, %f62
fitod %f2, %f62
fitod %f3, %f62
fitod %f4, %f62
fitod %f5, %f62
fitod %f6, %f62
fitod %f7, %f62
fitod %f8, %f62
fitod %f9, %f62
fitod %f10, %f62
fitod %f11, %f62
fitod %f12, %f62
fitod %f13, %f62
fitod %f14, %f62
fitod %f15, %f62
fitod %f16, %f62
fitod %f17, %f62
fitod %f18, %f62
fitod %f19, %f62
fitod %f20, %f62
fitod %f21, %f62
fitod %f22, %f62
fitod %f23, %f62
fitod %f24, %f62
fitod %f25, %f62
fitod %f26, %f62
fitod %f27, %f62
fitod %f28, %f62
fitod %f29, %f62
fitod %f30, %f62
fitod %f31, %f62
fitos_emul_continue:
sethi %hi(fitos_table_2), %g1
srl %g3, 25, %g2
or %g1, %lo(fitos_table_2), %g1
and %g2, 0x1f, %g2
sllx %g2, 2, %g2
jmpl %g1 + %g2, %g0
ba,pt %xcc, fitos_emul_fini
fitos_table_2:
fdtos %f62, %f0
fdtos %f62, %f1
fdtos %f62, %f2
fdtos %f62, %f3
fdtos %f62, %f4
fdtos %f62, %f5
fdtos %f62, %f6
fdtos %f62, %f7
fdtos %f62, %f8
fdtos %f62, %f9
fdtos %f62, %f10
fdtos %f62, %f11
fdtos %f62, %f12
fdtos %f62, %f13
fdtos %f62, %f14
fdtos %f62, %f15
fdtos %f62, %f16
fdtos %f62, %f17
fdtos %f62, %f18
fdtos %f62, %f19
fdtos %f62, %f20
fdtos %f62, %f21
fdtos %f62, %f22
fdtos %f62, %f23
fdtos %f62, %f24
fdtos %f62, %f25
fdtos %f62, %f26
fdtos %f62, %f27
fdtos %f62, %f28
fdtos %f62, %f29
fdtos %f62, %f30
fdtos %f62, %f31
fitos_emul_fini:
ldd [%g6 + TI_FPREGS + (62 * 4)], %f62
done
.size do_fpother_check_fitos,.-do_fpother_check_fitos
.align 32
.globl do_fptrap
.type do_fptrap,#function
do_fptrap:
TRAP_LOAD_THREAD_REG(%g6, %g1)
stx %fsr, [%g6 + TI_XFSR]
do_fptrap_after_fsr:
ldub [%g6 + TI_FPSAVED], %g3
rd %fprs, %g1
or %g3, %g1, %g3
stb %g3, [%g6 + TI_FPSAVED]
rd %gsr, %g3
stx %g3, [%g6 + TI_GSR]
mov SECONDARY_CONTEXT, %g3
661: ldxa [%g3] ASI_DMMU, %g5
.section .sun4v_1insn_patch, "ax"
.word 661b
ldxa [%g3] ASI_MMU, %g5
.previous
sethi %hi(sparc64_kern_sec_context), %g2
ldx [%g2 + %lo(sparc64_kern_sec_context)], %g2
661: stxa %g2, [%g3] ASI_DMMU
.section .sun4v_1insn_patch, "ax"
.word 661b
stxa %g2, [%g3] ASI_MMU
.previous
membar #Sync
add %g6, TI_FPREGS, %g2
andcc %g1, FPRS_DL, %g0
be,pn %icc, 4f
mov 0x40, %g3
stda %f0, [%g2] ASI_BLK_S
stda %f16, [%g2 + %g3] ASI_BLK_S
andcc %g1, FPRS_DU, %g0
be,pn %icc, 5f
4: add %g2, 128, %g2
stda %f32, [%g2] ASI_BLK_S
stda %f48, [%g2 + %g3] ASI_BLK_S
5: mov SECONDARY_CONTEXT, %g1
membar #Sync
661: stxa %g5, [%g1] ASI_DMMU
.section .sun4v_1insn_patch, "ax"
.word 661b
stxa %g5, [%g1] ASI_MMU
.previous
membar #Sync
ba,pt %xcc, etrap
wr %g0, 0, %fprs
.size do_fptrap,.-do_fptrap
arch/sparc64/kernel/getsetcc.S 0 → 100644
View file @ 7cece14a
.globl getcc
.type getcc,#function
getcc:
ldx [%o0 + PT_V9_TSTATE], %o1
srlx %o1, 32, %o1
and %o1, 0xf, %o1
retl
stx %o1, [%o0 + PT_V9_G1]
.size getcc,.-getcc
.globl setcc
.type setcc,#function
setcc:
ldx [%o0 + PT_V9_TSTATE], %o1
ldx [%o0 + PT_V9_G1], %o2
or %g0, %ulo(TSTATE_ICC), %o3
sllx %o3, 32, %o3
andn %o1, %o3, %o1
sllx %o2, 32, %o2
and %o2, %o3, %o2
or %o1, %o2, %o1
retl
stx %o1, [%o0 + PT_V9_TSTATE]
.size setcc,.-setcc
arch/sparc64/kernel/head.S
View file @ 7cece14a
......@@ -27,6 +27,10 @@
#include <asm/ttable.h>
#include <asm/mmu.h>
#include <asm/cpudata.h>
#include <asm/pil.h>
#include <asm/estate.h>
#include <asm/sfafsr.h>
#include <asm/unistd.h>
/* This section from from _start to sparc64_boot_end should fit into
* 0x0000000000404000 to 0x0000000000408000.
......@@ -823,7 +827,16 @@ sparc64_boot_end:
#include "etrap.S"
#include "rtrap.S"
#include "winfixup.S"
#include "entry.S"
#include "fpu_traps.S"
#include "ivec.S"
#include "getsetcc.S"
#include "utrap.S"
#include "spiterrs.S"
#include "cherrs.S"
#include "misctrap.S"
#include "syscalls.S"
#include "helpers.S"
#include "hvcalls.S"
#include "sun4v_tlb_miss.S"
#include "sun4v_ivec.S"
#include "ktlb.S"
......
arch/sparc64/kernel/helpers.S 0 → 100644
View file @ 7cece14a
.align 32
.globl __flushw_user
.type __flushw_user,#function
__flushw_user:
rdpr %otherwin, %g1
brz,pn %g1, 2f
clr %g2
1: save %sp, -128, %sp
rdpr %otherwin, %g1
brnz,pt %g1, 1b
add %g2, 1, %g2
1: sub %g2, 1, %g2
brnz,pt %g2, 1b
restore %g0, %g0, %g0
2: retl
nop
.size __flushw_user,.-__flushw_user
/* Flush %fp and %i7 to the stack for all register
* windows active inside of the cpu. This allows
* show_stack_trace() to avoid using an expensive
* 'flushw'.
*/
.globl stack_trace_flush
.type stack_trace_flush,#function
stack_trace_flush:
rdpr %pstate, %o0
wrpr %o0, PSTATE_IE, %pstate
rdpr %cwp, %g1
rdpr %canrestore, %g2
sub %g1, 1, %g3
1: brz,pn %g2, 2f
sub %g2, 1, %g2
wrpr %g3, %cwp
stx %fp, [%sp + STACK_BIAS + RW_V9_I6]
stx %i7, [%sp + STACK_BIAS + RW_V9_I7]
ba,pt %xcc, 1b
sub %g3, 1, %g3
2: wrpr %g1, %cwp
wrpr %o0, %pstate
retl
nop
.size stack_trace_flush,.-stack_trace_flush
#ifdef CONFIG_SMP
.globl hard_smp_processor_id
.type hard_smp_processor_id,#function
hard_smp_processor_id:
#endif
.globl real_hard_smp_processor_id
.type real_hard_smp_processor_id,#function
real_hard_smp_processor_id:
__GET_CPUID(%o0)
retl
nop
#ifdef CONFIG_SMP
.size hard_smp_processor_id,.-hard_smp_processor_id
#endif
.size real_hard_smp_processor_id,.-real_hard_smp_processor_id
arch/sparc64/kernel/entry.S → arch/sparc64/kernel/hvcalls.S
View file @ 7cece14a
/* $Id: entry.S,v 1.144 2002/02/09 19:49:30 davem Exp $
* arch/sparc64/kernel/entry.S: Sparc64 trap low-level entry points.
*
* Copyright (C) 1995,1997 David S. Miller (davem@caip.rutgers.edu)
* Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
* Copyright (C) 1996 Miguel de Icaza (miguel@nuclecu.unam.mx)
* Copyright (C) 1996,98,99 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
*/
#include <linux/errno.h>
#include <asm/head.h>
#include <asm/asi.h>
#include <asm/smp.h>
#include <asm/ptrace.h>
#include <asm/page.h>
#include <asm/signal.h>
#include <asm/pgtable.h>
#include <asm/processor.h>
#include <asm/visasm.h>
#include <asm/estate.h>
#include <asm/auxio.h>
#include <asm/sfafsr.h>
#include <asm/pil.h>
#include <asm/unistd.h>
#define curptr g6
.text
.align 32
/* This is trivial with the new code... */
.globl do_fpdis
do_fpdis:
sethi %hi(TSTATE_PEF), %g4
rdpr %tstate, %g5
andcc %g5, %g4, %g0
be,pt %xcc, 1f
nop
rd %fprs, %g5
andcc %g5, FPRS_FEF, %g0
be,pt %xcc, 1f
nop
/* Legal state when DCR_IFPOE is set in Cheetah %dcr. */
sethi %hi(109f), %g7
ba,pt %xcc, etrap
109: or %g7, %lo(109b), %g7
add %g0, %g0, %g0
ba,a,pt %xcc, rtrap
1: TRAP_LOAD_THREAD_REG(%g6, %g1)
ldub [%g6 + TI_FPSAVED], %g5
wr %g0, FPRS_FEF, %fprs
andcc %g5, FPRS_FEF, %g0
be,a,pt %icc, 1f
clr %g7
ldx [%g6 + TI_GSR], %g7
1: andcc %g5, FPRS_DL, %g0
bne,pn %icc, 2f
fzero %f0
andcc %g5, FPRS_DU, %g0
bne,pn %icc, 1f
fzero %f2
faddd %f0, %f2, %f4
fmuld %f0, %f2, %f6
faddd %f0, %f2, %f8
fmuld %f0, %f2, %f10
faddd %f0, %f2, %f12
fmuld %f0, %f2, %f14
faddd %f0, %f2, %f16
fmuld %f0, %f2, %f18
faddd %f0, %f2, %f20
fmuld %f0, %f2, %f22
faddd %f0, %f2, %f24
fmuld %f0, %f2, %f26
faddd %f0, %f2, %f28
fmuld %f0, %f2, %f30
faddd %f0, %f2, %f32
fmuld %f0, %f2, %f34
faddd %f0, %f2, %f36
fmuld %f0, %f2, %f38
faddd %f0, %f2, %f40
fmuld %f0, %f2, %f42
faddd %f0, %f2, %f44
fmuld %f0, %f2, %f46
faddd %f0, %f2, %f48
fmuld %f0, %f2, %f50
faddd %f0, %f2, %f52
fmuld %f0, %f2, %f54
faddd %f0, %f2, %f56
fmuld %f0, %f2, %f58
b,pt %xcc, fpdis_exit2
faddd %f0, %f2, %f60
1: mov SECONDARY_CONTEXT, %g3
add %g6, TI_FPREGS + 0x80, %g1
faddd %f0, %f2, %f4
fmuld %f0, %f2, %f6
661: ldxa [%g3] ASI_DMMU, %g5
.section .sun4v_1insn_patch, "ax"
.word 661b
ldxa [%g3] ASI_MMU, %g5
.previous
sethi %hi(sparc64_kern_sec_context), %g2
ldx [%g2 + %lo(sparc64_kern_sec_context)], %g2
661: stxa %g2, [%g3] ASI_DMMU
.section .sun4v_1insn_patch, "ax"
.word 661b
stxa %g2, [%g3] ASI_MMU
.previous
membar #Sync
add %g6, TI_FPREGS + 0xc0, %g2
faddd %f0, %f2, %f8
fmuld %f0, %f2, %f10
membar #Sync
ldda [%g1] ASI_BLK_S, %f32
ldda [%g2] ASI_BLK_S, %f48
membar #Sync
faddd %f0, %f2, %f12
fmuld %f0, %f2, %f14
faddd %f0, %f2, %f16
fmuld %f0, %f2, %f18
faddd %f0, %f2, %f20
fmuld %f0, %f2, %f22
faddd %f0, %f2, %f24
fmuld %f0, %f2, %f26
faddd %f0, %f2, %f28
fmuld %f0, %f2, %f30
b,pt %xcc, fpdis_exit
nop
2: andcc %g5, FPRS_DU, %g0
bne,pt %icc, 3f
fzero %f32
mov SECONDARY_CONTEXT, %g3
fzero %f34
661: ldxa [%g3] ASI_DMMU, %g5
.section .sun4v_1insn_patch, "ax"
.word 661b
ldxa [%g3] ASI_MMU, %g5
.previous
add %g6, TI_FPREGS, %g1
sethi %hi(sparc64_kern_sec_context), %g2
ldx [%g2 + %lo(sparc64_kern_sec_context)], %g2
661: stxa %g2, [%g3] ASI_DMMU
.section .sun4v_1insn_patch, "ax"
.word 661b
stxa %g2, [%g3] ASI_MMU
.previous
membar #Sync
add %g6, TI_FPREGS + 0x40, %g2
faddd %f32, %f34, %f36
fmuld %f32, %f34, %f38
membar #Sync
ldda [%g1] ASI_BLK_S, %f0
ldda [%g2] ASI_BLK_S, %f16
membar #Sync
faddd %f32, %f34, %f40
fmuld %f32, %f34, %f42
faddd %f32, %f34, %f44
fmuld %f32, %f34, %f46
faddd %f32, %f34, %f48
fmuld %f32, %f34, %f50
faddd %f32, %f34, %f52
fmuld %f32, %f34, %f54
faddd %f32, %f34, %f56
fmuld %f32, %f34, %f58
faddd %f32, %f34, %f60
fmuld %f32, %f34, %f62
ba,pt %xcc, fpdis_exit
nop
3: mov SECONDARY_CONTEXT, %g3
add %g6, TI_FPREGS, %g1
661: ldxa [%g3] ASI_DMMU, %g5
.section .sun4v_1insn_patch, "ax"
.word 661b
ldxa [%g3] ASI_MMU, %g5
.previous
sethi %hi(sparc64_kern_sec_context), %g2
ldx [%g2 + %lo(sparc64_kern_sec_context)], %g2
661: stxa %g2, [%g3] ASI_DMMU
.section .sun4v_1insn_patch, "ax"
.word 661b
stxa %g2, [%g3] ASI_MMU
.previous
membar #Sync
mov 0x40, %g2
membar #Sync
ldda [%g1] ASI_BLK_S, %f0
ldda [%g1 + %g2] ASI_BLK_S, %f16
add %g1, 0x80, %g1
ldda [%g1] ASI_BLK_S, %f32
ldda [%g1 + %g2] ASI_BLK_S, %f48
membar #Sync
fpdis_exit:
661: stxa %g5, [%g3] ASI_DMMU
.section .sun4v_1insn_patch, "ax"
.word 661b
stxa %g5, [%g3] ASI_MMU
.previous
membar #Sync
fpdis_exit2:
wr %g7, 0, %gsr
ldx [%g6 + TI_XFSR], %fsr
rdpr %tstate, %g3
or %g3, %g4, %g3 ! anal...
wrpr %g3, %tstate
wr %g0, FPRS_FEF, %fprs ! clean DU/DL bits
retry
.align 32
fp_other_bounce:
call do_fpother
add %sp, PTREGS_OFF, %o0
ba,pt %xcc, rtrap
nop
.globl do_fpother_check_fitos
.align 32
do_fpother_check_fitos:
TRAP_LOAD_THREAD_REG(%g6, %g1)
sethi %hi(fp_other_bounce - 4), %g7
or %g7, %lo(fp_other_bounce - 4), %g7
/* NOTE: Need to preserve %g7 until we fully commit
* to the fitos fixup.
*/
stx %fsr, [%g6 + TI_XFSR]
rdpr %tstate, %g3
andcc %g3, TSTATE_PRIV, %g0
bne,pn %xcc, do_fptrap_after_fsr
nop
ldx [%g6 + TI_XFSR], %g3
srlx %g3, 14, %g1
and %g1, 7, %g1
cmp %g1, 2 ! Unfinished FP-OP
bne,pn %xcc, do_fptrap_after_fsr
sethi %hi(1 << 23), %g1 ! Inexact
andcc %g3, %g1, %g0
bne,pn %xcc, do_fptrap_after_fsr
rdpr %tpc, %g1
lduwa [%g1] ASI_AIUP, %g3 ! This cannot ever fail
#define FITOS_MASK 0xc1f83fe0
#define FITOS_COMPARE 0x81a01880
sethi %hi(FITOS_MASK), %g1
or %g1, %lo(FITOS_MASK), %g1
and %g3, %g1, %g1
sethi %hi(FITOS_COMPARE), %g2
or %g2, %lo(FITOS_COMPARE), %g2
cmp %g1, %g2
bne,pn %xcc, do_fptrap_after_fsr
nop
std %f62, [%g6 + TI_FPREGS + (62 * 4)]
sethi %hi(fitos_table_1), %g1
and %g3, 0x1f, %g2
or %g1, %lo(fitos_table_1), %g1
sllx %g2, 2, %g2
jmpl %g1 + %g2, %g0
ba,pt %xcc, fitos_emul_continue
fitos_table_1:
fitod %f0, %f62
fitod %f1, %f62
fitod %f2, %f62
fitod %f3, %f62
fitod %f4, %f62
fitod %f5, %f62
fitod %f6, %f62
fitod %f7, %f62
fitod %f8, %f62
fitod %f9, %f62
fitod %f10, %f62
fitod %f11, %f62
fitod %f12, %f62
fitod %f13, %f62
fitod %f14, %f62
fitod %f15, %f62
fitod %f16, %f62
fitod %f17, %f62
fitod %f18, %f62
fitod %f19, %f62
fitod %f20, %f62
fitod %f21, %f62
fitod %f22, %f62
fitod %f23, %f62
fitod %f24, %f62
fitod %f25, %f62
fitod %f26, %f62
fitod %f27, %f62
fitod %f28, %f62
fitod %f29, %f62
fitod %f30, %f62
fitod %f31, %f62
fitos_emul_continue:
sethi %hi(fitos_table_2), %g1
srl %g3, 25, %g2
or %g1, %lo(fitos_table_2), %g1
and %g2, 0x1f, %g2
sllx %g2, 2, %g2
jmpl %g1 + %g2, %g0
ba,pt %xcc, fitos_emul_fini
fitos_table_2:
fdtos %f62, %f0
fdtos %f62, %f1
fdtos %f62, %f2
fdtos %f62, %f3
fdtos %f62, %f4
fdtos %f62, %f5
fdtos %f62, %f6
fdtos %f62, %f7
fdtos %f62, %f8
fdtos %f62, %f9
fdtos %f62, %f10
fdtos %f62, %f11
fdtos %f62, %f12
fdtos %f62, %f13
fdtos %f62, %f14
fdtos %f62, %f15
fdtos %f62, %f16
fdtos %f62, %f17
fdtos %f62, %f18
fdtos %f62, %f19
fdtos %f62, %f20
fdtos %f62, %f21
fdtos %f62, %f22
fdtos %f62, %f23
fdtos %f62, %f24
fdtos %f62, %f25
fdtos %f62, %f26
fdtos %f62, %f27
fdtos %f62, %f28
fdtos %f62, %f29
fdtos %f62, %f30
fdtos %f62, %f31
fitos_emul_fini:
ldd [%g6 + TI_FPREGS + (62 * 4)], %f62
done
.globl do_fptrap
.align 32
do_fptrap:
TRAP_LOAD_THREAD_REG(%g6, %g1)
stx %fsr, [%g6 + TI_XFSR]
do_fptrap_after_fsr:
ldub [%g6 + TI_FPSAVED], %g3
rd %fprs, %g1
or %g3, %g1, %g3
stb %g3, [%g6 + TI_FPSAVED]
rd %gsr, %g3
stx %g3, [%g6 + TI_GSR]
mov SECONDARY_CONTEXT, %g3
661: ldxa [%g3] ASI_DMMU, %g5
.section .sun4v_1insn_patch, "ax"
.word 661b
ldxa [%g3] ASI_MMU, %g5
.previous
sethi %hi(sparc64_kern_sec_context), %g2
ldx [%g2 + %lo(sparc64_kern_sec_context)], %g2
661: stxa %g2, [%g3] ASI_DMMU
.section .sun4v_1insn_patch, "ax"
.word 661b
stxa %g2, [%g3] ASI_MMU
.previous
membar #Sync
add %g6, TI_FPREGS, %g2
andcc %g1, FPRS_DL, %g0
be,pn %icc, 4f
mov 0x40, %g3
stda %f0, [%g2] ASI_BLK_S
stda %f16, [%g2 + %g3] ASI_BLK_S
andcc %g1, FPRS_DU, %g0
be,pn %icc, 5f
4: add %g2, 128, %g2
stda %f32, [%g2] ASI_BLK_S
stda %f48, [%g2 + %g3] ASI_BLK_S
5: mov SECONDARY_CONTEXT, %g1
membar #Sync
661: stxa %g5, [%g1] ASI_DMMU
.section .sun4v_1insn_patch, "ax"
.word 661b
stxa %g5, [%g1] ASI_MMU
.previous
membar #Sync
ba,pt %xcc, etrap
wr %g0, 0, %fprs
/* The registers for cross calls will be:
*
* DATA 0: [low 32-bits] Address of function to call, jmp to this
* [high 32-bits] MMU Context Argument 0, place in %g5
* DATA 1: Address Argument 1, place in %g1
* DATA 2: Address Argument 2, place in %g7
*
* With this method we can do most of the cross-call tlb/cache
* flushing very quickly.
*/
.text
.align 32
.globl do_ivec
do_ivec:
mov 0x40, %g3
ldxa [%g3 + %g0] ASI_INTR_R, %g3
sethi %hi(KERNBASE), %g4
cmp %g3, %g4
bgeu,pn %xcc, do_ivec_xcall
srlx %g3, 32, %g5
stxa %g0, [%g0] ASI_INTR_RECEIVE
membar #Sync
sethi %hi(ivector_table_pa), %g2
ldx [%g2 + %lo(ivector_table_pa)], %g2
sllx %g3, 4, %g3
add %g2, %g3, %g3
TRAP_LOAD_IRQ_WORK_PA(%g6, %g1)
ldx [%g6], %g5
stxa %g5, [%g3] ASI_PHYS_USE_EC
stx %g3, [%g6]
wr %g0, 1 << PIL_DEVICE_IRQ, %set_softint
retry
do_ivec_xcall:
mov 0x50, %g1
ldxa [%g1 + %g0] ASI_INTR_R, %g1
srl %g3, 0, %g3
mov 0x60, %g7
ldxa [%g7 + %g0] ASI_INTR_R, %g7
stxa %g0, [%g0] ASI_INTR_RECEIVE
membar #Sync
ba,pt %xcc, 1f
nop
.align 32
1: jmpl %g3, %g0
nop
.globl getcc, setcc
getcc:
ldx [%o0 + PT_V9_TSTATE], %o1
srlx %o1, 32, %o1
and %o1, 0xf, %o1
retl
stx %o1, [%o0 + PT_V9_G1]
setcc:
ldx [%o0 + PT_V9_TSTATE], %o1
ldx [%o0 + PT_V9_G1], %o2
or %g0, %ulo(TSTATE_ICC), %o3
sllx %o3, 32, %o3
andn %o1, %o3, %o1
sllx %o2, 32, %o2
and %o2, %o3, %o2
or %o1, %o2, %o1
retl
stx %o1, [%o0 + PT_V9_TSTATE]
.globl utrap_trap
utrap_trap: /* %g3=handler,%g4=level */
TRAP_LOAD_THREAD_REG(%g6, %g1)
ldx [%g6 + TI_UTRAPS], %g1
brnz,pt %g1, invoke_utrap
nop
ba,pt %xcc, etrap
rd %pc, %g7
mov %l4, %o1
call bad_trap
add %sp, PTREGS_OFF, %o0
ba,pt %xcc, rtrap
nop
invoke_utrap:
sllx %g3, 3, %g3
ldx [%g1 + %g3], %g1
save %sp, -128, %sp
rdpr %tstate, %l6
rdpr %cwp, %l7
andn %l6, TSTATE_CWP, %l6
wrpr %l6, %l7, %tstate
rdpr %tpc, %l6
rdpr %tnpc, %l7
wrpr %g1, 0, %tnpc
done
/* We need to carefully read the error status, ACK
* the errors, prevent recursive traps, and pass the
* information on to C code for logging.
*
* We pass the AFAR in as-is, and we encode the status
* information as described in asm-sparc64/sfafsr.h
*/
.globl __spitfire_access_error
__spitfire_access_error:
/* Disable ESTATE error reporting so that we do not
* take recursive traps and RED state the processor.
*/
stxa %g0, [%g0] ASI_ESTATE_ERROR_EN
membar #Sync
mov UDBE_UE, %g1
ldxa [%g0] ASI_AFSR, %g4 ! Get AFSR
/* __spitfire_cee_trap branches here with AFSR in %g4 and
* UDBE_CE in %g1. It only clears ESTATE_ERR_CE in the
* ESTATE Error Enable register.
*/
__spitfire_cee_trap_continue:
ldxa [%g0] ASI_AFAR, %g5 ! Get AFAR
rdpr %tt, %g3
and %g3, 0x1ff, %g3 ! Paranoia
sllx %g3, SFSTAT_TRAP_TYPE_SHIFT, %g3
or %g4, %g3, %g4
rdpr %tl, %g3
cmp %g3, 1
mov 1, %g3
bleu %xcc, 1f
sllx %g3, SFSTAT_TL_GT_ONE_SHIFT, %g3
or %g4, %g3, %g4
/* Read in the UDB error register state, clearing the
* sticky error bits as-needed. We only clear them if
* the UE bit is set. Likewise, __spitfire_cee_trap
* below will only do so if the CE bit is set.
*
* NOTE: UltraSparc-I/II have high and low UDB error
* registers, corresponding to the two UDB units
* present on those chips. UltraSparc-IIi only
* has a single UDB, called "SDB" in the manual.
* For IIi the upper UDB register always reads
* as zero so for our purposes things will just
* work with the checks below.
*/
1: ldxa [%g0] ASI_UDBH_ERROR_R, %g3
and %g3, 0x3ff, %g7 ! Paranoia
sllx %g7, SFSTAT_UDBH_SHIFT, %g7
or %g4, %g7, %g4
andcc %g3, %g1, %g3 ! UDBE_UE or UDBE_CE
be,pn %xcc, 1f
nop
stxa %g3, [%g0] ASI_UDB_ERROR_W
membar #Sync
1: mov 0x18, %g3
ldxa [%g3] ASI_UDBL_ERROR_R, %g3
and %g3, 0x3ff, %g7 ! Paranoia
sllx %g7, SFSTAT_UDBL_SHIFT, %g7
or %g4, %g7, %g4
andcc %g3, %g1, %g3 ! UDBE_UE or UDBE_CE
be,pn %xcc, 1f
nop
mov 0x18, %g7
stxa %g3, [%g7] ASI_UDB_ERROR_W
membar #Sync
1: /* Ok, now that we've latched the error state,
* clear the sticky bits in the AFSR.
*/
stxa %g4, [%g0] ASI_AFSR
membar #Sync
rdpr %tl, %g2
cmp %g2, 1
rdpr %pil, %g2
bleu,pt %xcc, 1f
wrpr %g0, 15, %pil
ba,pt %xcc, etraptl1
rd %pc, %g7
ba,pt %xcc, 2f
nop
1: ba,pt %xcc, etrap_irq
rd %pc, %g7
2:
#ifdef CONFIG_TRACE_IRQFLAGS
call trace_hardirqs_off
nop
#endif
mov %l4, %o1
mov %l5, %o2
call spitfire_access_error
add %sp, PTREGS_OFF, %o0
ba,pt %xcc, rtrap
nop
/* This is the trap handler entry point for ECC correctable
* errors. They are corrected, but we listen for the trap
* so that the event can be logged.
*
* Disrupting errors are either:
* 1) single-bit ECC errors during UDB reads to system
* memory
* 2) data parity errors during write-back events
*
* As far as I can make out from the manual, the CEE trap
* is only for correctable errors during memory read
* accesses by the front-end of the processor.
*
* The code below is only for trap level 1 CEE events,
* as it is the only situation where we can safely record
* and log. For trap level >1 we just clear the CE bit
* in the AFSR and return.
*
* This is just like __spiftire_access_error above, but it
* specifically handles correctable errors. If an
* uncorrectable error is indicated in the AFSR we
* will branch directly above to __spitfire_access_error
* to handle it instead. Uncorrectable therefore takes
* priority over correctable, and the error logging
* C code will notice this case by inspecting the
* trap type.
*/
.globl __spitfire_cee_trap
__spitfire_cee_trap:
ldxa [%g0] ASI_AFSR, %g4 ! Get AFSR
mov 1, %g3
sllx %g3, SFAFSR_UE_SHIFT, %g3
andcc %g4, %g3, %g0 ! Check for UE
bne,pn %xcc, __spitfire_access_error
nop
/* Ok, in this case we only have a correctable error.
* Indicate we only wish to capture that state in register
* %g1, and we only disable CE error reporting unlike UE
* handling which disables all errors.
*/
ldxa [%g0] ASI_ESTATE_ERROR_EN, %g3
andn %g3, ESTATE_ERR_CE, %g3
stxa %g3, [%g0] ASI_ESTATE_ERROR_EN
membar #Sync
/* Preserve AFSR in %g4, indicate UDB state to capture in %g1 */
ba,pt %xcc, __spitfire_cee_trap_continue
mov UDBE_CE, %g1
.globl __spitfire_data_access_exception
.globl __spitfire_data_access_exception_tl1
__spitfire_data_access_exception_tl1:
rdpr %pstate, %g4
wrpr %g4, PSTATE_MG|PSTATE_AG, %pstate
mov TLB_SFSR, %g3
mov DMMU_SFAR, %g5
ldxa [%g3] ASI_DMMU, %g4 ! Get SFSR
ldxa [%g5] ASI_DMMU, %g5 ! Get SFAR
stxa %g0, [%g3] ASI_DMMU ! Clear SFSR.FaultValid bit
membar #Sync
rdpr %tt, %g3
cmp %g3, 0x80 ! first win spill/fill trap
blu,pn %xcc, 1f
cmp %g3, 0xff ! last win spill/fill trap
bgu,pn %xcc, 1f
nop
ba,pt %xcc, winfix_dax
rdpr %tpc, %g3
1: sethi %hi(109f), %g7
ba,pt %xcc, etraptl1
109: or %g7, %lo(109b), %g7
mov %l4, %o1
mov %l5, %o2
call spitfire_data_access_exception_tl1
add %sp, PTREGS_OFF, %o0
ba,pt %xcc, rtrap
nop
__spitfire_data_access_exception:
rdpr %pstate, %g4
wrpr %g4, PSTATE_MG|PSTATE_AG, %pstate
mov TLB_SFSR, %g3
mov DMMU_SFAR, %g5
ldxa [%g3] ASI_DMMU, %g4 ! Get SFSR
ldxa [%g5] ASI_DMMU, %g5 ! Get SFAR
stxa %g0, [%g3] ASI_DMMU ! Clear SFSR.FaultValid bit
membar #Sync
sethi %hi(109f), %g7
ba,pt %xcc, etrap
109: or %g7, %lo(109b), %g7
mov %l4, %o1
mov %l5, %o2
call spitfire_data_access_exception
add %sp, PTREGS_OFF, %o0
ba,pt %xcc, rtrap
nop
.globl __spitfire_insn_access_exception
.globl __spitfire_insn_access_exception_tl1
__spitfire_insn_access_exception_tl1:
rdpr %pstate, %g4
wrpr %g4, PSTATE_MG|PSTATE_AG, %pstate
mov TLB_SFSR, %g3
ldxa [%g3] ASI_IMMU, %g4 ! Get SFSR
rdpr %tpc, %g5 ! IMMU has no SFAR, use TPC
stxa %g0, [%g3] ASI_IMMU ! Clear FaultValid bit
membar #Sync
sethi %hi(109f), %g7
ba,pt %xcc, etraptl1
109: or %g7, %lo(109b), %g7
mov %l4, %o1
mov %l5, %o2
call spitfire_insn_access_exception_tl1
add %sp, PTREGS_OFF, %o0
ba,pt %xcc, rtrap
nop
__spitfire_insn_access_exception:
rdpr %pstate, %g4
wrpr %g4, PSTATE_MG|PSTATE_AG, %pstate
mov TLB_SFSR, %g3
ldxa [%g3] ASI_IMMU, %g4 ! Get SFSR
rdpr %tpc, %g5 ! IMMU has no SFAR, use TPC
stxa %g0, [%g3] ASI_IMMU ! Clear FaultValid bit
membar #Sync
sethi %hi(109f), %g7
ba,pt %xcc, etrap
109: or %g7, %lo(109b), %g7
mov %l4, %o1
mov %l5, %o2
call spitfire_insn_access_exception
add %sp, PTREGS_OFF, %o0
ba,pt %xcc, rtrap
nop
/* These get patched into the trap table at boot time
* once we know we have a cheetah processor.
*/
.globl cheetah_fecc_trap_vector, cheetah_fecc_trap_vector_tl1
cheetah_fecc_trap_vector:
membar #Sync
ldxa [%g0] ASI_DCU_CONTROL_REG, %g1
andn %g1, DCU_DC | DCU_IC, %g1
stxa %g1, [%g0] ASI_DCU_CONTROL_REG
membar #Sync
sethi %hi(cheetah_fast_ecc), %g2
jmpl %g2 + %lo(cheetah_fast_ecc), %g0
mov 0, %g1
cheetah_fecc_trap_vector_tl1:
membar #Sync
ldxa [%g0] ASI_DCU_CONTROL_REG, %g1
andn %g1, DCU_DC | DCU_IC, %g1
stxa %g1, [%g0] ASI_DCU_CONTROL_REG
membar #Sync
sethi %hi(cheetah_fast_ecc), %g2
jmpl %g2 + %lo(cheetah_fast_ecc), %g0
mov 1, %g1
.globl cheetah_cee_trap_vector, cheetah_cee_trap_vector_tl1
cheetah_cee_trap_vector:
membar #Sync
ldxa [%g0] ASI_DCU_CONTROL_REG, %g1
andn %g1, DCU_IC, %g1
stxa %g1, [%g0] ASI_DCU_CONTROL_REG
membar #Sync
sethi %hi(cheetah_cee), %g2
jmpl %g2 + %lo(cheetah_cee), %g0
mov 0, %g1
cheetah_cee_trap_vector_tl1:
membar #Sync
ldxa [%g0] ASI_DCU_CONTROL_REG, %g1
andn %g1, DCU_IC, %g1
stxa %g1, [%g0] ASI_DCU_CONTROL_REG
membar #Sync
sethi %hi(cheetah_cee), %g2
jmpl %g2 + %lo(cheetah_cee), %g0
mov 1, %g1
.globl cheetah_deferred_trap_vector, cheetah_deferred_trap_vector_tl1
cheetah_deferred_trap_vector:
membar #Sync
ldxa [%g0] ASI_DCU_CONTROL_REG, %g1;
andn %g1, DCU_DC | DCU_IC, %g1;
stxa %g1, [%g0] ASI_DCU_CONTROL_REG;
membar #Sync;
sethi %hi(cheetah_deferred_trap), %g2
jmpl %g2 + %lo(cheetah_deferred_trap), %g0
mov 0, %g1
cheetah_deferred_trap_vector_tl1:
membar #Sync;
ldxa [%g0] ASI_DCU_CONTROL_REG, %g1;
andn %g1, DCU_DC | DCU_IC, %g1;
stxa %g1, [%g0] ASI_DCU_CONTROL_REG;
membar #Sync;
sethi %hi(cheetah_deferred_trap), %g2
jmpl %g2 + %lo(cheetah_deferred_trap), %g0
mov 1, %g1
/* Cheetah+ specific traps. These are for the new I/D cache parity
* error traps. The first argument to cheetah_plus_parity_handler
* is encoded as follows:
*
* Bit0: 0=dcache,1=icache
* Bit1: 0=recoverable,1=unrecoverable
*/
.globl cheetah_plus_dcpe_trap_vector, cheetah_plus_dcpe_trap_vector_tl1
cheetah_plus_dcpe_trap_vector:
membar #Sync
sethi %hi(do_cheetah_plus_data_parity), %g7
jmpl %g7 + %lo(do_cheetah_plus_data_parity), %g0
nop
nop
nop
nop
nop
do_cheetah_plus_data_parity:
rdpr %pil, %g2
wrpr %g0, 15, %pil
ba,pt %xcc, etrap_irq
rd %pc, %g7
#ifdef CONFIG_TRACE_IRQFLAGS
call trace_hardirqs_off
nop
#endif
mov 0x0, %o0
call cheetah_plus_parity_error
add %sp, PTREGS_OFF, %o1
ba,a,pt %xcc, rtrap_irq
cheetah_plus_dcpe_trap_vector_tl1:
membar #Sync
wrpr PSTATE_IG | PSTATE_PEF | PSTATE_PRIV, %pstate
sethi %hi(do_dcpe_tl1), %g3
jmpl %g3 + %lo(do_dcpe_tl1), %g0
nop
nop
nop
nop
.globl cheetah_plus_icpe_trap_vector, cheetah_plus_icpe_trap_vector_tl1
cheetah_plus_icpe_trap_vector:
membar #Sync
sethi %hi(do_cheetah_plus_insn_parity), %g7
jmpl %g7 + %lo(do_cheetah_plus_insn_parity), %g0
nop
nop
nop
nop
nop
do_cheetah_plus_insn_parity:
rdpr %pil, %g2
wrpr %g0, 15, %pil
ba,pt %xcc, etrap_irq
rd %pc, %g7
#ifdef CONFIG_TRACE_IRQFLAGS
call trace_hardirqs_off
nop
#endif
mov 0x1, %o0
call cheetah_plus_parity_error
add %sp, PTREGS_OFF, %o1
ba,a,pt %xcc, rtrap_irq
cheetah_plus_icpe_trap_vector_tl1:
membar #Sync
wrpr PSTATE_IG | PSTATE_PEF | PSTATE_PRIV, %pstate
sethi %hi(do_icpe_tl1), %g3
jmpl %g3 + %lo(do_icpe_tl1), %g0
nop
nop
nop
nop
/* If we take one of these traps when tl >= 1, then we
* jump to interrupt globals. If some trap level above us
* was also using interrupt globals, we cannot recover.
* We may use all interrupt global registers except %g6.
*/
.globl do_dcpe_tl1, do_icpe_tl1
do_dcpe_tl1:
rdpr %tl, %g1 ! Save original trap level
mov 1, %g2 ! Setup TSTATE checking loop
sethi %hi(TSTATE_IG), %g3 ! TSTATE mask bit
1: wrpr %g2, %tl ! Set trap level to check
rdpr %tstate, %g4 ! Read TSTATE for this level
andcc %g4, %g3, %g0 ! Interrupt globals in use?
bne,a,pn %xcc, do_dcpe_tl1_fatal ! Yep, irrecoverable
wrpr %g1, %tl ! Restore original trap level
add %g2, 1, %g2 ! Next trap level
cmp %g2, %g1 ! Hit them all yet?
ble,pt %icc, 1b ! Not yet
nop
wrpr %g1, %tl ! Restore original trap level
do_dcpe_tl1_nonfatal: /* Ok we may use interrupt globals safely. */
sethi %hi(dcache_parity_tl1_occurred), %g2
lduw [%g2 + %lo(dcache_parity_tl1_occurred)], %g1
add %g1, 1, %g1
stw %g1, [%g2 + %lo(dcache_parity_tl1_occurred)]
/* Reset D-cache parity */
sethi %hi(1 << 16), %g1 ! D-cache size
mov (1 << 5), %g2 ! D-cache line size
sub %g1, %g2, %g1 ! Move down 1 cacheline
1: srl %g1, 14, %g3 ! Compute UTAG
membar #Sync
stxa %g3, [%g1] ASI_DCACHE_UTAG
membar #Sync
sub %g2, 8, %g3 ! 64-bit data word within line
2: membar #Sync
stxa %g0, [%g1 + %g3] ASI_DCACHE_DATA
membar #Sync
subcc %g3, 8, %g3 ! Next 64-bit data word
bge,pt %icc, 2b
nop
subcc %g1, %g2, %g1 ! Next cacheline
bge,pt %icc, 1b
nop
ba,pt %xcc, dcpe_icpe_tl1_common
nop
do_dcpe_tl1_fatal:
sethi %hi(1f), %g7
ba,pt %xcc, etraptl1
1: or %g7, %lo(1b), %g7
mov 0x2, %o0
call cheetah_plus_parity_error
add %sp, PTREGS_OFF, %o1
ba,pt %xcc, rtrap
nop
do_icpe_tl1:
rdpr %tl, %g1 ! Save original trap level
mov 1, %g2 ! Setup TSTATE checking loop
sethi %hi(TSTATE_IG), %g3 ! TSTATE mask bit
1: wrpr %g2, %tl ! Set trap level to check
rdpr %tstate, %g4 ! Read TSTATE for this level
andcc %g4, %g3, %g0 ! Interrupt globals in use?
bne,a,pn %xcc, do_icpe_tl1_fatal ! Yep, irrecoverable
wrpr %g1, %tl ! Restore original trap level
add %g2, 1, %g2 ! Next trap level
cmp %g2, %g1 ! Hit them all yet?
ble,pt %icc, 1b ! Not yet
nop
wrpr %g1, %tl ! Restore original trap level
do_icpe_tl1_nonfatal: /* Ok we may use interrupt globals safely. */
sethi %hi(icache_parity_tl1_occurred), %g2
lduw [%g2 + %lo(icache_parity_tl1_occurred)], %g1
add %g1, 1, %g1
stw %g1, [%g2 + %lo(icache_parity_tl1_occurred)]
/* Flush I-cache */
sethi %hi(1 << 15), %g1 ! I-cache size
mov (1 << 5), %g2 ! I-cache line size
sub %g1, %g2, %g1
1: or %g1, (2 << 3), %g3
stxa %g0, [%g3] ASI_IC_TAG
membar #Sync
subcc %g1, %g2, %g1
bge,pt %icc, 1b
nop
ba,pt %xcc, dcpe_icpe_tl1_common
nop
do_icpe_tl1_fatal:
sethi %hi(1f), %g7
ba,pt %xcc, etraptl1
1: or %g7, %lo(1b), %g7
mov 0x3, %o0
call cheetah_plus_parity_error
add %sp, PTREGS_OFF, %o1
ba,pt %xcc, rtrap
nop
dcpe_icpe_tl1_common:
/* Flush D-cache, re-enable D/I caches in DCU and finally
* retry the trapping instruction.
*/
sethi %hi(1 << 16), %g1 ! D-cache size
mov (1 << 5), %g2 ! D-cache line size
sub %g1, %g2, %g1
1: stxa %g0, [%g1] ASI_DCACHE_TAG
membar #Sync
subcc %g1, %g2, %g1
bge,pt %icc, 1b
nop
ldxa [%g0] ASI_DCU_CONTROL_REG, %g1
or %g1, (DCU_DC | DCU_IC), %g1
stxa %g1, [%g0] ASI_DCU_CONTROL_REG
membar #Sync
retry
/* Capture I/D/E-cache state into per-cpu error scoreboard.
*
* %g1: (TL>=0) ? 1 : 0
* %g2: scratch
* %g3: scratch
* %g4: AFSR
* %g5: AFAR
* %g6: unused, will have current thread ptr after etrap
* %g7: scratch
*/
__cheetah_log_error:
/* Put "TL1" software bit into AFSR. */
and %g1, 0x1, %g1
sllx %g1, 63, %g2
or %g4, %g2, %g4
/* Get log entry pointer for this cpu at this trap level. */
BRANCH_IF_JALAPENO(g2,g3,50f)
ldxa [%g0] ASI_SAFARI_CONFIG, %g2
srlx %g2, 17, %g2
ba,pt %xcc, 60f
and %g2, 0x3ff, %g2
50: ldxa [%g0] ASI_JBUS_CONFIG, %g2
srlx %g2, 17, %g2
and %g2, 0x1f, %g2
60: sllx %g2, 9, %g2
sethi %hi(cheetah_error_log), %g3
ldx [%g3 + %lo(cheetah_error_log)], %g3
brz,pn %g3, 80f
nop
add %g3, %g2, %g3
sllx %g1, 8, %g1
add %g3, %g1, %g1
/* %g1 holds pointer to the top of the logging scoreboard */
ldx [%g1 + 0x0], %g7
cmp %g7, -1
bne,pn %xcc, 80f
nop
stx %g4, [%g1 + 0x0]
stx %g5, [%g1 + 0x8]
add %g1, 0x10, %g1
/* %g1 now points to D-cache logging area */
set 0x3ff8, %g2 /* DC_addr mask */
and %g5, %g2, %g2 /* DC_addr bits of AFAR */
srlx %g5, 12, %g3
or %g3, 1, %g3 /* PHYS tag + valid */
10: ldxa [%g2] ASI_DCACHE_TAG, %g7
cmp %g3, %g7 /* TAG match? */
bne,pt %xcc, 13f
nop
/* Yep, what we want, capture state. */
stx %g2, [%g1 + 0x20]
stx %g7, [%g1 + 0x28]
/* A membar Sync is required before and after utag access. */
membar #Sync
ldxa [%g2] ASI_DCACHE_UTAG, %g7
membar #Sync
stx %g7, [%g1 + 0x30]
ldxa [%g2] ASI_DCACHE_SNOOP_TAG, %g7
stx %g7, [%g1 + 0x38]
clr %g3
12: ldxa [%g2 + %g3] ASI_DCACHE_DATA, %g7
stx %g7, [%g1]
add %g3, (1 << 5), %g3
cmp %g3, (4 << 5)
bl,pt %xcc, 12b
add %g1, 0x8, %g1
ba,pt %xcc, 20f
add %g1, 0x20, %g1
13: sethi %hi(1 << 14), %g7
add %g2, %g7, %g2
srlx %g2, 14, %g7
cmp %g7, 4
bl,pt %xcc, 10b
nop
add %g1, 0x40, %g1
/* %g1 now points to I-cache logging area */
20: set 0x1fe0, %g2 /* IC_addr mask */
and %g5, %g2, %g2 /* IC_addr bits of AFAR */
sllx %g2, 1, %g2 /* IC_addr[13:6]==VA[12:5] */
srlx %g5, (13 - 8), %g3 /* Make PTAG */
andn %g3, 0xff, %g3 /* Mask off undefined bits */
21: ldxa [%g2] ASI_IC_TAG, %g7
andn %g7, 0xff, %g7
cmp %g3, %g7
bne,pt %xcc, 23f
nop
/* Yep, what we want, capture state. */
stx %g2, [%g1 + 0x40]
stx %g7, [%g1 + 0x48]
add %g2, (1 << 3), %g2
ldxa [%g2] ASI_IC_TAG, %g7
add %g2, (1 << 3), %g2
stx %g7, [%g1 + 0x50]
ldxa [%g2] ASI_IC_TAG, %g7
add %g2, (1 << 3), %g2
stx %g7, [%g1 + 0x60]
ldxa [%g2] ASI_IC_TAG, %g7
stx %g7, [%g1 + 0x68]
sub %g2, (3 << 3), %g2
ldxa [%g2] ASI_IC_STAG, %g7
stx %g7, [%g1 + 0x58]
clr %g3
srlx %g2, 2, %g2
22: ldxa [%g2 + %g3] ASI_IC_INSTR, %g7
stx %g7, [%g1]
add %g3, (1 << 3), %g3
cmp %g3, (8 << 3)
bl,pt %xcc, 22b
add %g1, 0x8, %g1
ba,pt %xcc, 30f
add %g1, 0x30, %g1
23: sethi %hi(1 << 14), %g7
add %g2, %g7, %g2
srlx %g2, 14, %g7
cmp %g7, 4
bl,pt %xcc, 21b
nop
add %g1, 0x70, %g1
/* %g1 now points to E-cache logging area */
30: andn %g5, (32 - 1), %g2
stx %g2, [%g1 + 0x20]
ldxa [%g2] ASI_EC_TAG_DATA, %g7
stx %g7, [%g1 + 0x28]
ldxa [%g2] ASI_EC_R, %g0
clr %g3
31: ldxa [%g3] ASI_EC_DATA, %g7
stx %g7, [%g1 + %g3]
add %g3, 0x8, %g3
cmp %g3, 0x20
bl,pt %xcc, 31b
nop
80:
rdpr %tt, %g2
cmp %g2, 0x70
be c_fast_ecc
cmp %g2, 0x63
be c_cee
nop
ba,pt %xcc, c_deferred
/* Cheetah FECC trap handling, we get here from tl{0,1}_fecc
* in the trap table. That code has done a memory barrier
* and has disabled both the I-cache and D-cache in the DCU
* control register. The I-cache is disabled so that we may
* capture the corrupted cache line, and the D-cache is disabled
* because corrupt data may have been placed there and we don't
* want to reference it.
*
* %g1 is one if this trap occurred at %tl >= 1.
*
* Next, we turn off error reporting so that we don't recurse.
*/
.globl cheetah_fast_ecc
cheetah_fast_ecc:
ldxa [%g0] ASI_ESTATE_ERROR_EN, %g2
andn %g2, ESTATE_ERROR_NCEEN | ESTATE_ERROR_CEEN, %g2
stxa %g2, [%g0] ASI_ESTATE_ERROR_EN
membar #Sync
/* Fetch and clear AFSR/AFAR */
ldxa [%g0] ASI_AFSR, %g4
ldxa [%g0] ASI_AFAR, %g5
stxa %g4, [%g0] ASI_AFSR
membar #Sync
ba,pt %xcc, __cheetah_log_error
nop
c_fast_ecc:
rdpr %pil, %g2
wrpr %g0, 15, %pil
ba,pt %xcc, etrap_irq
rd %pc, %g7
#ifdef CONFIG_TRACE_IRQFLAGS
call trace_hardirqs_off
nop
#endif
mov %l4, %o1
mov %l5, %o2
call cheetah_fecc_handler
add %sp, PTREGS_OFF, %o0
ba,a,pt %xcc, rtrap_irq
/* Our caller has disabled I-cache and performed membar Sync. */
.globl cheetah_cee
cheetah_cee:
ldxa [%g0] ASI_ESTATE_ERROR_EN, %g2
andn %g2, ESTATE_ERROR_CEEN, %g2
stxa %g2, [%g0] ASI_ESTATE_ERROR_EN
membar #Sync
/* Fetch and clear AFSR/AFAR */
ldxa [%g0] ASI_AFSR, %g4
ldxa [%g0] ASI_AFAR, %g5
stxa %g4, [%g0] ASI_AFSR
membar #Sync
ba,pt %xcc, __cheetah_log_error
nop
c_cee:
rdpr %pil, %g2
wrpr %g0, 15, %pil
ba,pt %xcc, etrap_irq
rd %pc, %g7
#ifdef CONFIG_TRACE_IRQFLAGS
call trace_hardirqs_off
nop
#endif
mov %l4, %o1
mov %l5, %o2
call cheetah_cee_handler
add %sp, PTREGS_OFF, %o0
ba,a,pt %xcc, rtrap_irq
/* Our caller has disabled I-cache+D-cache and performed membar Sync. */
.globl cheetah_deferred_trap
cheetah_deferred_trap:
ldxa [%g0] ASI_ESTATE_ERROR_EN, %g2
andn %g2, ESTATE_ERROR_NCEEN | ESTATE_ERROR_CEEN, %g2
stxa %g2, [%g0] ASI_ESTATE_ERROR_EN
membar #Sync
/* Fetch and clear AFSR/AFAR */
ldxa [%g0] ASI_AFSR, %g4
ldxa [%g0] ASI_AFAR, %g5
stxa %g4, [%g0] ASI_AFSR
membar #Sync
ba,pt %xcc, __cheetah_log_error
nop
c_deferred:
rdpr %pil, %g2
wrpr %g0, 15, %pil
ba,pt %xcc, etrap_irq
rd %pc, %g7
#ifdef CONFIG_TRACE_IRQFLAGS
call trace_hardirqs_off
nop
#endif
mov %l4, %o1
mov %l5, %o2
call cheetah_deferred_handler
add %sp, PTREGS_OFF, %o0
ba,a,pt %xcc, rtrap_irq
.globl __do_privact
__do_privact:
mov TLB_SFSR, %g3
stxa %g0, [%g3] ASI_DMMU ! Clear FaultValid bit
membar #Sync
sethi %hi(109f), %g7
ba,pt %xcc, etrap
109: or %g7, %lo(109b), %g7
call do_privact
add %sp, PTREGS_OFF, %o0
ba,pt %xcc, rtrap
nop
.globl do_mna
do_mna:
rdpr %tl, %g3
cmp %g3, 1
/* Setup %g4/%g5 now as they are used in the
* winfixup code.
*/
mov TLB_SFSR, %g3
mov DMMU_SFAR, %g4
ldxa [%g4] ASI_DMMU, %g4
ldxa [%g3] ASI_DMMU, %g5
stxa %g0, [%g3] ASI_DMMU ! Clear FaultValid bit
membar #Sync
bgu,pn %icc, winfix_mna
rdpr %tpc, %g3
1: sethi %hi(109f), %g7
ba,pt %xcc, etrap
109: or %g7, %lo(109b), %g7
mov %l4, %o1
mov %l5, %o2
call mem_address_unaligned
add %sp, PTREGS_OFF, %o0
ba,pt %xcc, rtrap
nop
.globl do_lddfmna
do_lddfmna:
sethi %hi(109f), %g7
mov TLB_SFSR, %g4
ldxa [%g4] ASI_DMMU, %g5
stxa %g0, [%g4] ASI_DMMU ! Clear FaultValid bit
membar #Sync
mov DMMU_SFAR, %g4
ldxa [%g4] ASI_DMMU, %g4
ba,pt %xcc, etrap
109: or %g7, %lo(109b), %g7
mov %l4, %o1
mov %l5, %o2
call handle_lddfmna
add %sp, PTREGS_OFF, %o0
ba,pt %xcc, rtrap
nop
.globl do_stdfmna
do_stdfmna:
sethi %hi(109f), %g7
mov TLB_SFSR, %g4
ldxa [%g4] ASI_DMMU, %g5
stxa %g0, [%g4] ASI_DMMU ! Clear FaultValid bit
membar #Sync
mov DMMU_SFAR, %g4
ldxa [%g4] ASI_DMMU, %g4
ba,pt %xcc, etrap
109: or %g7, %lo(109b), %g7
mov %l4, %o1
mov %l5, %o2
call handle_stdfmna
add %sp, PTREGS_OFF, %o0
ba,pt %xcc, rtrap
nop
.globl breakpoint_trap
breakpoint_trap:
call sparc_breakpoint
add %sp, PTREGS_OFF, %o0
ba,pt %xcc, rtrap
nop
/* SunOS's execv() call only specifies the argv argument, the
* environment settings are the same as the calling processes.
*/
.globl sunos_execv
sys_execve:
sethi %hi(sparc_execve), %g1
ba,pt %xcc, execve_merge
or %g1, %lo(sparc_execve), %g1
#ifdef CONFIG_COMPAT
.globl sys_execve
sunos_execv:
stx %g0, [%sp + PTREGS_OFF + PT_V9_I2]
.globl sys32_execve
sys32_execve:
sethi %hi(sparc32_execve), %g1
or %g1, %lo(sparc32_execve), %g1
#endif
execve_merge:
flushw
jmpl %g1, %g0
add %sp, PTREGS_OFF, %o0
.globl sys_pipe, sys_sigpause, sys_nis_syscall
.globl sys_rt_sigreturn
.globl sys_ptrace
.globl sys_sigaltstack
.align 32
sys_pipe: ba,pt %xcc, sparc_pipe
add %sp, PTREGS_OFF, %o0
sys_nis_syscall:ba,pt %xcc, c_sys_nis_syscall
add %sp, PTREGS_OFF, %o0
sys_memory_ordering:
ba,pt %xcc, sparc_memory_ordering
add %sp, PTREGS_OFF, %o1
sys_sigaltstack:ba,pt %xcc, do_sigaltstack
add %i6, STACK_BIAS, %o2
#ifdef CONFIG_COMPAT
.globl sys32_sigstack
sys32_sigstack: ba,pt %xcc, do_sys32_sigstack
mov %i6, %o2
.globl sys32_sigaltstack
sys32_sigaltstack:
ba,pt %xcc, do_sys32_sigaltstack
mov %i6, %o2
#endif
.align 32
#ifdef CONFIG_COMPAT
.globl sys32_sigreturn
sys32_sigreturn:
add %sp, PTREGS_OFF, %o0
call do_sigreturn32
add %o7, 1f-.-4, %o7
nop
#endif
sys_rt_sigreturn:
add %sp, PTREGS_OFF, %o0
call do_rt_sigreturn
add %o7, 1f-.-4, %o7
nop
#ifdef CONFIG_COMPAT
.globl sys32_rt_sigreturn
sys32_rt_sigreturn:
add %sp, PTREGS_OFF, %o0
call do_rt_sigreturn32
add %o7, 1f-.-4, %o7
nop
#endif
.align 32
1: ldx [%curptr + TI_FLAGS], %l5
andcc %l5, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %g0
be,pt %icc, rtrap
nop
add %sp, PTREGS_OFF, %o0
call syscall_trace
mov 1, %o1
ba,pt %xcc, rtrap
nop
/* This is how fork() was meant to be done, 8 instruction entry.
*
* I questioned the following code briefly, let me clear things
* up so you must not reason on it like I did.
*
* Know the fork_kpsr etc. we use in the sparc32 port? We don't
* need it here because the only piece of window state we copy to
* the child is the CWP register. Even if the parent sleeps,
* we are safe because we stuck it into pt_regs of the parent
* so it will not change.
*
* XXX This raises the question, whether we can do the same on
* XXX sparc32 to get rid of fork_kpsr _and_ fork_kwim. The
* XXX answer is yes. We stick fork_kpsr in UREG_G0 and
* XXX fork_kwim in UREG_G1 (global registers are considered
* XXX volatile across a system call in the sparc ABI I think
* XXX if it isn't we can use regs->y instead, anyone who depends
* XXX upon the Y register being preserved across a fork deserves
* XXX to lose).
*
* In fact we should take advantage of that fact for other things
* during system calls...
*/
.globl sys_fork, sys_vfork, sys_clone, sparc_exit
.globl ret_from_syscall
.align 32
sys_vfork: /* Under Linux, vfork and fork are just special cases of clone. */
sethi %hi(0x4000 | 0x0100 | SIGCHLD), %o0
or %o0, %lo(0x4000 | 0x0100 | SIGCHLD), %o0
ba,pt %xcc, sys_clone
sys_fork: clr %o1
mov SIGCHLD, %o0
sys_clone: flushw
movrz %o1, %fp, %o1
mov 0, %o3
ba,pt %xcc, sparc_do_fork
add %sp, PTREGS_OFF, %o2
ret_from_syscall:
/* Clear current_thread_info()->new_child, and
* check performance counter stuff too.
*/
stb %g0, [%g6 + TI_NEW_CHILD]
ldx [%g6 + TI_FLAGS], %l0
call schedule_tail
mov %g7, %o0
andcc %l0, _TIF_PERFCTR, %g0
be,pt %icc, 1f
nop
ldx [%g6 + TI_PCR], %o7
wr %g0, %o7, %pcr
/* Blackbird errata workaround. See commentary in
* smp.c:smp_percpu_timer_interrupt() for more
* information.
*/
ba,pt %xcc, 99f
nop
.align 64
99: wr %g0, %g0, %pic
rd %pic, %g0
1: b,pt %xcc, ret_sys_call
ldx [%sp + PTREGS_OFF + PT_V9_I0], %o0
sparc_exit: rdpr %pstate, %g2
wrpr %g2, PSTATE_IE, %pstate
rdpr %otherwin, %g1
rdpr %cansave, %g3
add %g3, %g1, %g3
wrpr %g3, 0x0, %cansave
wrpr %g0, 0x0, %otherwin
wrpr %g2, 0x0, %pstate
ba,pt %xcc, sys_exit
stb %g0, [%g6 + TI_WSAVED]
linux_sparc_ni_syscall:
sethi %hi(sys_ni_syscall), %l7
b,pt %xcc, 4f
or %l7, %lo(sys_ni_syscall), %l7
linux_syscall_trace32:
add %sp, PTREGS_OFF, %o0
call syscall_trace
clr %o1
srl %i0, 0, %o0
srl %i4, 0, %o4
srl %i1, 0, %o1
srl %i2, 0, %o2
b,pt %xcc, 2f
srl %i3, 0, %o3
linux_syscall_trace:
add %sp, PTREGS_OFF, %o0
call syscall_trace
clr %o1
mov %i0, %o0
mov %i1, %o1
mov %i2, %o2
mov %i3, %o3
b,pt %xcc, 2f
mov %i4, %o4
/* Linux 32-bit system calls enter here... */
.align 32
.globl linux_sparc_syscall32
linux_sparc_syscall32:
/* Direct access to user regs, much faster. */
cmp %g1, NR_SYSCALLS ! IEU1 Group
bgeu,pn %xcc, linux_sparc_ni_syscall ! CTI
srl %i0, 0, %o0 ! IEU0
sll %g1, 2, %l4 ! IEU0 Group
srl %i4, 0, %o4 ! IEU1
lduw [%l7 + %l4], %l7 ! Load
srl %i1, 0, %o1 ! IEU0 Group
ldx [%curptr + TI_FLAGS], %l0 ! Load
srl %i5, 0, %o5 ! IEU1
srl %i2, 0, %o2 ! IEU0 Group
andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %g0
bne,pn %icc, linux_syscall_trace32 ! CTI
mov %i0, %l5 ! IEU1
call %l7 ! CTI Group brk forced
srl %i3, 0, %o3 ! IEU0
ba,a,pt %xcc, 3f
/* Linux native system calls enter here... */
.align 32
.globl linux_sparc_syscall
linux_sparc_syscall:
/* Direct access to user regs, much faster. */
cmp %g1, NR_SYSCALLS ! IEU1 Group
bgeu,pn %xcc, linux_sparc_ni_syscall ! CTI
mov %i0, %o0 ! IEU0
sll %g1, 2, %l4 ! IEU0 Group
mov %i1, %o1 ! IEU1
lduw [%l7 + %l4], %l7 ! Load
4: mov %i2, %o2 ! IEU0 Group
ldx [%curptr + TI_FLAGS], %l0 ! Load
mov %i3, %o3 ! IEU1
mov %i4, %o4 ! IEU0 Group
andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %g0
bne,pn %icc, linux_syscall_trace ! CTI Group
mov %i0, %l5 ! IEU0
2: call %l7 ! CTI Group brk forced
mov %i5, %o5 ! IEU0
nop
3: stx %o0, [%sp + PTREGS_OFF + PT_V9_I0]
ret_sys_call:
ldx [%sp + PTREGS_OFF + PT_V9_TSTATE], %g3
ldx [%sp + PTREGS_OFF + PT_V9_TNPC], %l1 ! pc = npc
sra %o0, 0, %o0
mov %ulo(TSTATE_XCARRY | TSTATE_ICARRY), %g2
sllx %g2, 32, %g2
/* Check if force_successful_syscall_return()
* was invoked.
*/
ldub [%curptr + TI_SYS_NOERROR], %l2
brnz,a,pn %l2, 80f
stb %g0, [%curptr + TI_SYS_NOERROR]
cmp %o0, -ERESTART_RESTARTBLOCK
bgeu,pn %xcc, 1f
andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %l6
80:
/* System call success, clear Carry condition code. */
andn %g3, %g2, %g3
stx %g3, [%sp + PTREGS_OFF + PT_V9_TSTATE]
bne,pn %icc, linux_syscall_trace2
add %l1, 0x4, %l2 ! npc = npc+4
stx %l1, [%sp + PTREGS_OFF + PT_V9_TPC]
ba,pt %xcc, rtrap
stx %l2, [%sp + PTREGS_OFF + PT_V9_TNPC]
1:
/* System call failure, set Carry condition code.
* Also, get abs(errno) to return to the process.
*/
andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %l6
sub %g0, %o0, %o0
or %g3, %g2, %g3
stx %o0, [%sp + PTREGS_OFF + PT_V9_I0]
stx %g3, [%sp + PTREGS_OFF + PT_V9_TSTATE]
bne,pn %icc, linux_syscall_trace2
add %l1, 0x4, %l2 ! npc = npc+4
stx %l1, [%sp + PTREGS_OFF + PT_V9_TPC]
b,pt %xcc, rtrap
stx %l2, [%sp + PTREGS_OFF + PT_V9_TNPC]
linux_syscall_trace2:
add %sp, PTREGS_OFF, %o0
call syscall_trace
mov 1, %o1
stx %l1, [%sp + PTREGS_OFF + PT_V9_TPC]
ba,pt %xcc, rtrap
stx %l2, [%sp + PTREGS_OFF + PT_V9_TNPC]
.align 32
.globl __flushw_user
__flushw_user:
rdpr %otherwin, %g1
brz,pn %g1, 2f
clr %g2
1: save %sp, -128, %sp
rdpr %otherwin, %g1
brnz,pt %g1, 1b
add %g2, 1, %g2
1: sub %g2, 1, %g2
brnz,pt %g2, 1b
restore %g0, %g0, %g0
2: retl
nop
/* Flush %fp and %i7 to the stack for all register
* windows active inside of the cpu. This allows
* show_stack_trace() to avoid using an expensive
* 'flushw'.
*/
.globl stack_trace_flush
.type stack_trace_flush,#function
stack_trace_flush:
rdpr %pstate, %o0
wrpr %o0, PSTATE_IE, %pstate
rdpr %cwp, %g1
rdpr %canrestore, %g2
sub %g1, 1, %g3
1: brz,pn %g2, 2f
sub %g2, 1, %g2
wrpr %g3, %cwp
stx %fp, [%sp + STACK_BIAS + RW_V9_I6]
stx %i7, [%sp + STACK_BIAS + RW_V9_I7]
ba,pt %xcc, 1b
sub %g3, 1, %g3
2: wrpr %g1, %cwp
wrpr %o0, %pstate
retl
nop
.size stack_trace_flush,.-stack_trace_flush
#ifdef CONFIG_SMP
.globl hard_smp_processor_id
hard_smp_processor_id:
#endif
.globl real_hard_smp_processor_id
real_hard_smp_processor_id:
__GET_CPUID(%o0)
retl
nop
/* %o0: devhandle
* %o1: devino
*
......
arch/sparc64/kernel/ivec.S 0 → 100644
View file @ 7cece14a
/* The registers for cross calls will be:
*
* DATA 0: [low 32-bits] Address of function to call, jmp to this
* [high 32-bits] MMU Context Argument 0, place in %g5
* DATA 1: Address Argument 1, place in %g1
* DATA 2: Address Argument 2, place in %g7
*
* With this method we can do most of the cross-call tlb/cache
* flushing very quickly.
*/
.align 32
.globl do_ivec
.type do_ivec,#function
do_ivec:
mov 0x40, %g3
ldxa [%g3 + %g0] ASI_INTR_R, %g3
sethi %hi(KERNBASE), %g4
cmp %g3, %g4
bgeu,pn %xcc, do_ivec_xcall
srlx %g3, 32, %g5
stxa %g0, [%g0] ASI_INTR_RECEIVE
membar #Sync
sethi %hi(ivector_table_pa), %g2
ldx [%g2 + %lo(ivector_table_pa)], %g2
sllx %g3, 4, %g3
add %g2, %g3, %g3
TRAP_LOAD_IRQ_WORK_PA(%g6, %g1)
ldx [%g6], %g5
stxa %g5, [%g3] ASI_PHYS_USE_EC
stx %g3, [%g6]
wr %g0, 1 << PIL_DEVICE_IRQ, %set_softint
retry
do_ivec_xcall:
mov 0x50, %g1
ldxa [%g1 + %g0] ASI_INTR_R, %g1
srl %g3, 0, %g3
mov 0x60, %g7
ldxa [%g7 + %g0] ASI_INTR_R, %g7
stxa %g0, [%g0] ASI_INTR_RECEIVE
membar #Sync
ba,pt %xcc, 1f
nop
.align 32
1: jmpl %g3, %g0
nop
.size do_ivec,.-do_ivec
arch/sparc64/kernel/kgdb.c 0 → 100644
View file @ 7cece14a
/* kgdb.c: KGDB support for 64-bit sparc.
*
* Copyright (C) 2008 David S. Miller <davem@davemloft.net>
*/
#include <linux/kgdb.h>
#include <linux/kdebug.h>
#include <asm/kdebug.h>
#include <asm/ptrace.h>
#include <asm/irq.h>
void pt_regs_to_gdb_regs(unsigned long *gdb_regs, struct pt_regs *regs)
{
struct reg_window *win;
int i;
gdb_regs[GDB_G0] = 0;
for (i = 0; i < 15; i++)
gdb_regs[GDB_G1 + i] = regs->u_regs[UREG_G1 + i];
win = (struct reg_window *) (regs->u_regs[UREG_FP] + STACK_BIAS);
for (i = 0; i < 8; i++)
gdb_regs[GDB_L0 + i] = win->locals[i];
for (i = 0; i < 8; i++)
gdb_regs[GDB_I0 + i] = win->ins[i];
for (i = GDB_F0; i <= GDB_F62; i++)
gdb_regs[i] = 0;
gdb_regs[GDB_PC] = regs->tpc;
gdb_regs[GDB_NPC] = regs->tnpc;
gdb_regs[GDB_STATE] = regs->tstate;
gdb_regs[GDB_FSR] = 0;
gdb_regs[GDB_FPRS] = 0;
gdb_regs[GDB_Y] = regs->y;
}
void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p)
{
struct thread_info *t = task_thread_info(p);
extern unsigned int switch_to_pc;
extern unsigned int ret_from_syscall;
struct reg_window *win;
unsigned long pc, cwp;
int i;
for (i = GDB_G0; i < GDB_G6; i++)
gdb_regs[i] = 0;
gdb_regs[GDB_G6] = (unsigned long) t;
gdb_regs[GDB_G7] = (unsigned long) p;
for (i = GDB_O0; i < GDB_SP; i++)
gdb_regs[i] = 0;
gdb_regs[GDB_SP] = t->ksp;
gdb_regs[GDB_O7] = 0;
win = (struct reg_window *) (t->ksp + STACK_BIAS);
for (i = 0; i < 8; i++)
gdb_regs[GDB_L0 + i] = win->locals[i];
for (i = 0; i < 8; i++)
gdb_regs[GDB_I0 + i] = win->ins[i];
for (i = GDB_F0; i <= GDB_F62; i++)
gdb_regs[i] = 0;
if (t->new_child)
pc = (unsigned long) &ret_from_syscall;
else
pc = (unsigned long) &switch_to_pc;
gdb_regs[GDB_PC] = pc;
gdb_regs[GDB_NPC] = pc + 4;
cwp = __thread_flag_byte_ptr(t)[TI_FLAG_BYTE_CWP];
gdb_regs[GDB_STATE] = (TSTATE_PRIV | TSTATE_IE | cwp);
gdb_regs[GDB_FSR] = 0;
gdb_regs[GDB_FPRS] = 0;
gdb_regs[GDB_Y] = 0;
}
void gdb_regs_to_pt_regs(unsigned long *gdb_regs, struct pt_regs *regs)
{
struct reg_window *win;
int i;
for (i = 0; i < 15; i++)
regs->u_regs[UREG_G1 + i] = gdb_regs[GDB_G1 + i];
/* If the TSTATE register is changing, we have to preserve
* the CWP field, otherwise window save/restore explodes.
*/
if (regs->tstate != gdb_regs[GDB_STATE]) {
unsigned long cwp = regs->tstate & TSTATE_CWP;
regs->tstate = (gdb_regs[GDB_STATE] & ~TSTATE_CWP) | cwp;
}
regs->tpc = gdb_regs[GDB_PC];
regs->tnpc = gdb_regs[GDB_NPC];
regs->y = gdb_regs[GDB_Y];
win = (struct reg_window *) (regs->u_regs[UREG_FP] + STACK_BIAS);
for (i = 0; i < 8; i++)
win->locals[i] = gdb_regs[GDB_L0 + i];
for (i = 0; i < 8; i++)
win->ins[i] = gdb_regs[GDB_I0 + i];
}
#ifdef CONFIG_SMP
void smp_kgdb_capture_client(struct pt_regs *regs)
{
unsigned long flags;
__asm__ __volatile__("rdpr %%pstate, %0\n\t"
"wrpr %0, %1, %%pstate"
: "=r" (flags)
: "i" (PSTATE_IE));
flushw_all();
if (atomic_read(&kgdb_active) != -1)
kgdb_nmicallback(raw_smp_processor_id(), regs);
__asm__ __volatile__("wrpr %0, 0, %%pstate"
: : "r" (flags));
}
#endif
int kgdb_arch_handle_exception(int e_vector, int signo, int err_code,
char *remcomInBuffer, char *remcomOutBuffer,
struct pt_regs *linux_regs)
{
unsigned long addr;
char *ptr;
switch (remcomInBuffer[0]) {
case 'c':
/* try to read optional parameter, pc unchanged if no parm */
ptr = &remcomInBuffer[1];
if (kgdb_hex2long(&ptr, &addr)) {
linux_regs->tpc = addr;
linux_regs->tnpc = addr + 4;
}
/* fallthru */
case 'D':
case 'k':
if (linux_regs->tpc == (unsigned long) arch_kgdb_breakpoint) {
linux_regs->tpc = linux_regs->tnpc;
linux_regs->tnpc += 4;
}
return 0;
}
return -1;
}
asmlinkage void kgdb_trap(unsigned long trap_level, struct pt_regs *regs)
{
unsigned long flags;
if (user_mode(regs)) {
bad_trap(regs, trap_level);
return;
}
flushw_all();
local_irq_save(flags);
kgdb_handle_exception(0x172, SIGTRAP, 0, regs);
local_irq_restore(flags);
}
int kgdb_arch_init(void)
{
return 0;
}
void kgdb_arch_exit(void)
{
}
struct kgdb_arch arch_kgdb_ops = {
/* Breakpoint instruction: ta 0x72 */
.gdb_bpt_instr = { 0x91, 0xd0, 0x20, 0x72 },
};
arch/sparc64/kernel/misctrap.S 0 → 100644
View file @ 7cece14a
#ifdef CONFIG_KGDB
.globl arch_kgdb_breakpoint
.type arch_kgdb_breakpoint,#function
arch_kgdb_breakpoint:
ta 0x72
retl
nop
.size arch_kgdb_breakpoint,.-arch_kgdb_breakpoint
#endif
.type __do_privact,#function
__do_privact:
mov TLB_SFSR, %g3
stxa %g0, [%g3] ASI_DMMU ! Clear FaultValid bit
membar #Sync
sethi %hi(109f), %g7
ba,pt %xcc, etrap
109: or %g7, %lo(109b), %g7
call do_privact
add %sp, PTREGS_OFF, %o0
ba,pt %xcc, rtrap
nop
.size __do_privact,.-__do_privact
.type do_mna,#function
do_mna:
rdpr %tl, %g3
cmp %g3, 1
/* Setup %g4/%g5 now as they are used in the
* winfixup code.
*/
mov TLB_SFSR, %g3
mov DMMU_SFAR, %g4
ldxa [%g4] ASI_DMMU, %g4
ldxa [%g3] ASI_DMMU, %g5
stxa %g0, [%g3] ASI_DMMU ! Clear FaultValid bit
membar #Sync
bgu,pn %icc, winfix_mna
rdpr %tpc, %g3
1: sethi %hi(109f), %g7
ba,pt %xcc, etrap
109: or %g7, %lo(109b), %g7
mov %l4, %o1
mov %l5, %o2
call mem_address_unaligned
add %sp, PTREGS_OFF, %o0
ba,pt %xcc, rtrap
nop
.size do_mna,.-do_mna
.type do_lddfmna,#function
do_lddfmna:
sethi %hi(109f), %g7
mov TLB_SFSR, %g4
ldxa [%g4] ASI_DMMU, %g5
stxa %g0, [%g4] ASI_DMMU ! Clear FaultValid bit
membar #Sync
mov DMMU_SFAR, %g4
ldxa [%g4] ASI_DMMU, %g4
ba,pt %xcc, etrap
109: or %g7, %lo(109b), %g7
mov %l4, %o1
mov %l5, %o2
call handle_lddfmna
add %sp, PTREGS_OFF, %o0
ba,pt %xcc, rtrap
nop
.size do_lddfmna,.-do_lddfmna
.type do_stdfmna,#function
do_stdfmna:
sethi %hi(109f), %g7
mov TLB_SFSR, %g4
ldxa [%g4] ASI_DMMU, %g5
stxa %g0, [%g4] ASI_DMMU ! Clear FaultValid bit
membar #Sync
mov DMMU_SFAR, %g4
ldxa [%g4] ASI_DMMU, %g4
ba,pt %xcc, etrap
109: or %g7, %lo(109b), %g7
mov %l4, %o1
mov %l5, %o2
call handle_stdfmna
add %sp, PTREGS_OFF, %o0
ba,pt %xcc, rtrap
nop
.size do_stdfmna,.-do_stdfmna
.type breakpoint_trap,#function
breakpoint_trap:
call sparc_breakpoint
add %sp, PTREGS_OFF, %o0
ba,pt %xcc, rtrap
nop
.size breakpoint_trap,.-breakpoint_trap
arch/sparc64/kernel/smp.c
View file @ 7cece14a
......@@ -38,7 +38,6 @@
#include <asm/pgtable.h>
#include <asm/oplib.h>
#include <asm/uaccess.h>
#include <asm/timer.h>
#include <asm/starfire.h>
#include <asm/tlb.h>
#include <asm/sections.h>
......@@ -910,6 +909,9 @@ extern unsigned long xcall_flush_tlb_kernel_range;
extern unsigned long xcall_report_regs;
extern unsigned long xcall_receive_signal;
extern unsigned long xcall_new_mmu_context_version;
#ifdef CONFIG_KGDB
extern unsigned long xcall_kgdb_capture;
#endif
#ifdef DCACHE_ALIASING_POSSIBLE
extern unsigned long xcall_flush_dcache_page_cheetah;
......@@ -1079,6 +1081,13 @@ void smp_new_mmu_context_version(void)
smp_cross_call(&xcall_new_mmu_context_version, 0, 0, 0);
}
#ifdef CONFIG_KGDB
void kgdb_roundup_cpus(unsigned long flags)
{
smp_cross_call(&xcall_kgdb_capture, 0, 0, 0);
}
#endif
void smp_report_regs(void)
{
smp_cross_call(&xcall_report_regs, 0, 0, 0);
......
arch/sparc64/kernel/spiterrs.S 0 → 100644
View file @ 7cece14a
/* We need to carefully read the error status, ACK the errors,
* prevent recursive traps, and pass the information on to C
* code for logging.
*
* We pass the AFAR in as-is, and we encode the status
* information as described in asm-sparc64/sfafsr.h
*/
.type __spitfire_access_error,#function
__spitfire_access_error:
/* Disable ESTATE error reporting so that we do not take
* recursive traps and RED state the processor.
*/
stxa %g0, [%g0] ASI_ESTATE_ERROR_EN
membar #Sync
mov UDBE_UE, %g1
ldxa [%g0] ASI_AFSR, %g4 ! Get AFSR
/* __spitfire_cee_trap branches here with AFSR in %g4 and
* UDBE_CE in %g1. It only clears ESTATE_ERR_CE in the ESTATE
* Error Enable register.
*/
__spitfire_cee_trap_continue:
ldxa [%g0] ASI_AFAR, %g5 ! Get AFAR
rdpr %tt, %g3
and %g3, 0x1ff, %g3 ! Paranoia
sllx %g3, SFSTAT_TRAP_TYPE_SHIFT, %g3
or %g4, %g3, %g4
rdpr %tl, %g3
cmp %g3, 1
mov 1, %g3
bleu %xcc, 1f
sllx %g3, SFSTAT_TL_GT_ONE_SHIFT, %g3
or %g4, %g3, %g4
/* Read in the UDB error register state, clearing the sticky
* error bits as-needed. We only clear them if the UE bit is
* set. Likewise, __spitfire_cee_trap below will only do so
* if the CE bit is set.
*
* NOTE: UltraSparc-I/II have high and low UDB error
* registers, corresponding to the two UDB units
* present on those chips. UltraSparc-IIi only
* has a single UDB, called "SDB" in the manual.
* For IIi the upper UDB register always reads
* as zero so for our purposes things will just
* work with the checks below.
*/
1: ldxa [%g0] ASI_UDBH_ERROR_R, %g3
and %g3, 0x3ff, %g7 ! Paranoia
sllx %g7, SFSTAT_UDBH_SHIFT, %g7
or %g4, %g7, %g4
andcc %g3, %g1, %g3 ! UDBE_UE or UDBE_CE
be,pn %xcc, 1f
nop
stxa %g3, [%g0] ASI_UDB_ERROR_W
membar #Sync
1: mov 0x18, %g3
ldxa [%g3] ASI_UDBL_ERROR_R, %g3
and %g3, 0x3ff, %g7 ! Paranoia
sllx %g7, SFSTAT_UDBL_SHIFT, %g7
or %g4, %g7, %g4
andcc %g3, %g1, %g3 ! UDBE_UE or UDBE_CE
be,pn %xcc, 1f
nop
mov 0x18, %g7
stxa %g3, [%g7] ASI_UDB_ERROR_W
membar #Sync
1: /* Ok, now that we've latched the error state, clear the
* sticky bits in the AFSR.
*/
stxa %g4, [%g0] ASI_AFSR
membar #Sync
rdpr %tl, %g2
cmp %g2, 1
rdpr %pil, %g2
bleu,pt %xcc, 1f
wrpr %g0, 15, %pil
ba,pt %xcc, etraptl1
rd %pc, %g7
ba,pt %xcc, 2f
nop
1: ba,pt %xcc, etrap_irq
rd %pc, %g7
2:
#ifdef CONFIG_TRACE_IRQFLAGS
call trace_hardirqs_off
nop
#endif
mov %l4, %o1
mov %l5, %o2
call spitfire_access_error
add %sp, PTREGS_OFF, %o0
ba,pt %xcc, rtrap
nop
.size __spitfire_access_error,.-__spitfire_access_error
/* This is the trap handler entry point for ECC correctable
* errors. They are corrected, but we listen for the trap so
* that the event can be logged.
*
* Disrupting errors are either:
* 1) single-bit ECC errors during UDB reads to system
* memory
* 2) data parity errors during write-back events
*
* As far as I can make out from the manual, the CEE trap is
* only for correctable errors during memory read accesses by
* the front-end of the processor.
*
* The code below is only for trap level 1 CEE events, as it
* is the only situation where we can safely record and log.
* For trap level >1 we just clear the CE bit in the AFSR and
* return.
*
* This is just like __spiftire_access_error above, but it
* specifically handles correctable errors. If an
* uncorrectable error is indicated in the AFSR we will branch
* directly above to __spitfire_access_error to handle it
* instead. Uncorrectable therefore takes priority over
* correctable, and the error logging C code will notice this
* case by inspecting the trap type.
*/
.type __spitfire_cee_trap,#function
__spitfire_cee_trap:
ldxa [%g0] ASI_AFSR, %g4 ! Get AFSR
mov 1, %g3
sllx %g3, SFAFSR_UE_SHIFT, %g3
andcc %g4, %g3, %g0 ! Check for UE
bne,pn %xcc, __spitfire_access_error
nop
/* Ok, in this case we only have a correctable error.
* Indicate we only wish to capture that state in register
* %g1, and we only disable CE error reporting unlike UE
* handling which disables all errors.
*/
ldxa [%g0] ASI_ESTATE_ERROR_EN, %g3
andn %g3, ESTATE_ERR_CE, %g3
stxa %g3, [%g0] ASI_ESTATE_ERROR_EN
membar #Sync
/* Preserve AFSR in %g4, indicate UDB state to capture in %g1 */
ba,pt %xcc, __spitfire_cee_trap_continue
mov UDBE_CE, %g1
.size __spitfire_cee_trap,.-__spitfire_cee_trap
.type __spitfire_data_access_exception_tl1,#function
__spitfire_data_access_exception_tl1:
rdpr %pstate, %g4
wrpr %g4, PSTATE_MG|PSTATE_AG, %pstate
mov TLB_SFSR, %g3
mov DMMU_SFAR, %g5
ldxa [%g3] ASI_DMMU, %g4 ! Get SFSR
ldxa [%g5] ASI_DMMU, %g5 ! Get SFAR
stxa %g0, [%g3] ASI_DMMU ! Clear SFSR.FaultValid bit
membar #Sync
rdpr %tt, %g3
cmp %g3, 0x80 ! first win spill/fill trap
blu,pn %xcc, 1f
cmp %g3, 0xff ! last win spill/fill trap
bgu,pn %xcc, 1f
nop
ba,pt %xcc, winfix_dax
rdpr %tpc, %g3
1: sethi %hi(109f), %g7
ba,pt %xcc, etraptl1
109: or %g7, %lo(109b), %g7
mov %l4, %o1
mov %l5, %o2
call spitfire_data_access_exception_tl1
add %sp, PTREGS_OFF, %o0
ba,pt %xcc, rtrap
nop
.size __spitfire_data_access_exception_tl1,.-__spitfire_data_access_exception_tl1
.type __spitfire_data_access_exception,#function
__spitfire_data_access_exception:
rdpr %pstate, %g4
wrpr %g4, PSTATE_MG|PSTATE_AG, %pstate
mov TLB_SFSR, %g3
mov DMMU_SFAR, %g5
ldxa [%g3] ASI_DMMU, %g4 ! Get SFSR
ldxa [%g5] ASI_DMMU, %g5 ! Get SFAR
stxa %g0, [%g3] ASI_DMMU ! Clear SFSR.FaultValid bit
membar #Sync
sethi %hi(109f), %g7
ba,pt %xcc, etrap
109: or %g7, %lo(109b), %g7
mov %l4, %o1
mov %l5, %o2
call spitfire_data_access_exception
add %sp, PTREGS_OFF, %o0
ba,pt %xcc, rtrap
nop
.size __spitfire_data_access_exception,.-__spitfire_data_access_exception
.type __spitfire_insn_access_exception_tl1,#function
__spitfire_insn_access_exception_tl1:
rdpr %pstate, %g4
wrpr %g4, PSTATE_MG|PSTATE_AG, %pstate
mov TLB_SFSR, %g3
ldxa [%g3] ASI_IMMU, %g4 ! Get SFSR
rdpr %tpc, %g5 ! IMMU has no SFAR, use TPC
stxa %g0, [%g3] ASI_IMMU ! Clear FaultValid bit
membar #Sync
sethi %hi(109f), %g7
ba,pt %xcc, etraptl1
109: or %g7, %lo(109b), %g7
mov %l4, %o1
mov %l5, %o2
call spitfire_insn_access_exception_tl1
add %sp, PTREGS_OFF, %o0
ba,pt %xcc, rtrap
nop
.size __spitfire_insn_access_exception_tl1,.-__spitfire_insn_access_exception_tl1
.type __spitfire_insn_access_exception,#function
__spitfire_insn_access_exception:
rdpr %pstate, %g4
wrpr %g4, PSTATE_MG|PSTATE_AG, %pstate
mov TLB_SFSR, %g3
ldxa [%g3] ASI_IMMU, %g4 ! Get SFSR
rdpr %tpc, %g5 ! IMMU has no SFAR, use TPC
stxa %g0, [%g3] ASI_IMMU ! Clear FaultValid bit
membar #Sync
sethi %hi(109f), %g7
ba,pt %xcc, etrap
109: or %g7, %lo(109b), %g7
mov %l4, %o1
mov %l5, %o2
call spitfire_insn_access_exception
add %sp, PTREGS_OFF, %o0
ba,pt %xcc, rtrap
nop
.size __spitfire_insn_access_exception,.-__spitfire_insn_access_exception
arch/sparc64/kernel/syscalls.S 0 → 100644
View file @ 7cece14a
/* SunOS's execv() call only specifies the argv argument, the
* environment settings are the same as the calling processes.
*/
sys_execve:
sethi %hi(sparc_execve), %g1
ba,pt %xcc, execve_merge
or %g1, %lo(sparc_execve), %g1
#ifdef CONFIG_COMPAT
sunos_execv:
stx %g0, [%sp + PTREGS_OFF + PT_V9_I2]
sys32_execve:
sethi %hi(sparc32_execve), %g1
or %g1, %lo(sparc32_execve), %g1
#endif
execve_merge:
flushw
jmpl %g1, %g0
add %sp, PTREGS_OFF, %o0
.align 32
sys_pipe:
ba,pt %xcc, sparc_pipe
add %sp, PTREGS_OFF, %o0
sys_nis_syscall:
ba,pt %xcc, c_sys_nis_syscall
add %sp, PTREGS_OFF, %o0
sys_memory_ordering:
ba,pt %xcc, sparc_memory_ordering
add %sp, PTREGS_OFF, %o1
sys_sigaltstack:
ba,pt %xcc, do_sigaltstack
add %i6, STACK_BIAS, %o2
#ifdef CONFIG_COMPAT
sys32_sigstack:
ba,pt %xcc, do_sys32_sigstack
mov %i6, %o2
sys32_sigaltstack:
ba,pt %xcc, do_sys32_sigaltstack
mov %i6, %o2
#endif
.align 32
#ifdef CONFIG_COMPAT
sys32_sigreturn:
add %sp, PTREGS_OFF, %o0
call do_sigreturn32
add %o7, 1f-.-4, %o7
nop
#endif
sys_rt_sigreturn:
add %sp, PTREGS_OFF, %o0
call do_rt_sigreturn
add %o7, 1f-.-4, %o7
nop
#ifdef CONFIG_COMPAT
sys32_rt_sigreturn:
add %sp, PTREGS_OFF, %o0
call do_rt_sigreturn32
add %o7, 1f-.-4, %o7
nop
#endif
.align 32
1: ldx [%g6 + TI_FLAGS], %l5
andcc %l5, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %g0
be,pt %icc, rtrap
nop
add %sp, PTREGS_OFF, %o0
call syscall_trace
mov 1, %o1
ba,pt %xcc, rtrap
nop
/* This is how fork() was meant to be done, 8 instruction entry.
*
* I questioned the following code briefly, let me clear things
* up so you must not reason on it like I did.
*
* Know the fork_kpsr etc. we use in the sparc32 port? We don't
* need it here because the only piece of window state we copy to
* the child is the CWP register. Even if the parent sleeps,
* we are safe because we stuck it into pt_regs of the parent
* so it will not change.
*
* XXX This raises the question, whether we can do the same on
* XXX sparc32 to get rid of fork_kpsr _and_ fork_kwim. The
* XXX answer is yes. We stick fork_kpsr in UREG_G0 and
* XXX fork_kwim in UREG_G1 (global registers are considered
* XXX volatile across a system call in the sparc ABI I think
* XXX if it isn't we can use regs->y instead, anyone who depends
* XXX upon the Y register being preserved across a fork deserves
* XXX to lose).
*
* In fact we should take advantage of that fact for other things
* during system calls...
*/
.align 32
sys_vfork: /* Under Linux, vfork and fork are just special cases of clone. */
sethi %hi(0x4000 | 0x0100 | SIGCHLD), %o0
or %o0, %lo(0x4000 | 0x0100 | SIGCHLD), %o0
ba,pt %xcc, sys_clone
sys_fork:
clr %o1
mov SIGCHLD, %o0
sys_clone:
flushw
movrz %o1, %fp, %o1
mov 0, %o3
ba,pt %xcc, sparc_do_fork
add %sp, PTREGS_OFF, %o2
.globl ret_from_syscall
ret_from_syscall:
/* Clear current_thread_info()->new_child, and
* check performance counter stuff too.
*/
stb %g0, [%g6 + TI_NEW_CHILD]
ldx [%g6 + TI_FLAGS], %l0
call schedule_tail
mov %g7, %o0
andcc %l0, _TIF_PERFCTR, %g0
be,pt %icc, 1f
nop
ldx [%g6 + TI_PCR], %o7
wr %g0, %o7, %pcr
/* Blackbird errata workaround. See commentary in
* smp.c:smp_percpu_timer_interrupt() for more
* information.
*/
ba,pt %xcc, 99f
nop
.align 64
99: wr %g0, %g0, %pic
rd %pic, %g0
1: ba,pt %xcc, ret_sys_call
ldx [%sp + PTREGS_OFF + PT_V9_I0], %o0
.globl sparc_exit
.type sparc_exit,#function
sparc_exit:
rdpr %pstate, %g2
wrpr %g2, PSTATE_IE, %pstate
rdpr %otherwin, %g1
rdpr %cansave, %g3
add %g3, %g1, %g3
wrpr %g3, 0x0, %cansave
wrpr %g0, 0x0, %otherwin
wrpr %g2, 0x0, %pstate
ba,pt %xcc, sys_exit
stb %g0, [%g6 + TI_WSAVED]
.size sparc_exit,.-sparc_exit
linux_sparc_ni_syscall:
sethi %hi(sys_ni_syscall), %l7
ba,pt %xcc, 4f
or %l7, %lo(sys_ni_syscall), %l7
linux_syscall_trace32:
add %sp, PTREGS_OFF, %o0
call syscall_trace
clr %o1
srl %i0, 0, %o0
srl %i4, 0, %o4
srl %i1, 0, %o1
srl %i2, 0, %o2
ba,pt %xcc, 2f
srl %i3, 0, %o3
linux_syscall_trace:
add %sp, PTREGS_OFF, %o0
call syscall_trace
clr %o1
mov %i0, %o0
mov %i1, %o1
mov %i2, %o2
mov %i3, %o3
b,pt %xcc, 2f
mov %i4, %o4
/* Linux 32-bit system calls enter here... */
.align 32
.globl linux_sparc_syscall32
linux_sparc_syscall32:
/* Direct access to user regs, much faster. */
cmp %g1, NR_SYSCALLS ! IEU1 Group
bgeu,pn %xcc, linux_sparc_ni_syscall ! CTI
srl %i0, 0, %o0 ! IEU0
sll %g1, 2, %l4 ! IEU0 Group
srl %i4, 0, %o4 ! IEU1
lduw [%l7 + %l4], %l7 ! Load
srl %i1, 0, %o1 ! IEU0 Group
ldx [%g6 + TI_FLAGS], %l0 ! Load
srl %i5, 0, %o5 ! IEU1
srl %i2, 0, %o2 ! IEU0 Group
andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %g0
bne,pn %icc, linux_syscall_trace32 ! CTI
mov %i0, %l5 ! IEU1
call %l7 ! CTI Group brk forced
srl %i3, 0, %o3 ! IEU0
ba,a,pt %xcc, 3f
/* Linux native system calls enter here... */
.align 32
.globl linux_sparc_syscall
linux_sparc_syscall:
/* Direct access to user regs, much faster. */
cmp %g1, NR_SYSCALLS ! IEU1 Group
bgeu,pn %xcc, linux_sparc_ni_syscall ! CTI
mov %i0, %o0 ! IEU0
sll %g1, 2, %l4 ! IEU0 Group
mov %i1, %o1 ! IEU1
lduw [%l7 + %l4], %l7 ! Load
4: mov %i2, %o2 ! IEU0 Group
ldx [%g6 + TI_FLAGS], %l0 ! Load
mov %i3, %o3 ! IEU1
mov %i4, %o4 ! IEU0 Group
andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %g0
bne,pn %icc, linux_syscall_trace ! CTI Group
mov %i0, %l5 ! IEU0
2: call %l7 ! CTI Group brk forced
mov %i5, %o5 ! IEU0
nop
3: stx %o0, [%sp + PTREGS_OFF + PT_V9_I0]
ret_sys_call:
ldx [%sp + PTREGS_OFF + PT_V9_TSTATE], %g3
ldx [%sp + PTREGS_OFF + PT_V9_TNPC], %l1 ! pc = npc
sra %o0, 0, %o0
mov %ulo(TSTATE_XCARRY | TSTATE_ICARRY), %g2
sllx %g2, 32, %g2
/* Check if force_successful_syscall_return()
* was invoked.
*/
ldub [%g6 + TI_SYS_NOERROR], %l2
brnz,a,pn %l2, 80f
stb %g0, [%g6 + TI_SYS_NOERROR]
cmp %o0, -ERESTART_RESTARTBLOCK
bgeu,pn %xcc, 1f
andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %l6
80:
/* System call success, clear Carry condition code. */
andn %g3, %g2, %g3
stx %g3, [%sp + PTREGS_OFF + PT_V9_TSTATE]
bne,pn %icc, linux_syscall_trace2
add %l1, 0x4, %l2 ! npc = npc+4
stx %l1, [%sp + PTREGS_OFF + PT_V9_TPC]
ba,pt %xcc, rtrap
stx %l2, [%sp + PTREGS_OFF + PT_V9_TNPC]
1:
/* System call failure, set Carry condition code.
* Also, get abs(errno) to return to the process.
*/
andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %l6
sub %g0, %o0, %o0
or %g3, %g2, %g3
stx %o0, [%sp + PTREGS_OFF + PT_V9_I0]
stx %g3, [%sp + PTREGS_OFF + PT_V9_TSTATE]
bne,pn %icc, linux_syscall_trace2
add %l1, 0x4, %l2 ! npc = npc+4
stx %l1, [%sp + PTREGS_OFF + PT_V9_TPC]
b,pt %xcc, rtrap
stx %l2, [%sp + PTREGS_OFF + PT_V9_TNPC]
linux_syscall_trace2:
add %sp, PTREGS_OFF, %o0
call syscall_trace
mov 1, %o1
stx %l1, [%sp + PTREGS_OFF + PT_V9_TPC]
ba,pt %xcc, rtrap
stx %l2, [%sp + PTREGS_OFF + PT_V9_TNPC]
arch/sparc64/kernel/ttable.S
View file @ 7cece14a
......@@ -153,7 +153,7 @@ tl0_resv164: BTRAP(0x164) BTRAP(0x165) BTRAP(0x166) BTRAP(0x167) BTRAP(0x168)
tl0_resv169: BTRAP(0x169) BTRAP(0x16a) BTRAP(0x16b) BTRAP(0x16c)
tl0_linux64: LINUX_64BIT_SYSCALL_TRAP
tl0_gsctx: TRAP(sparc64_get_context) TRAP(sparc64_set_context)
tl0_resv170: KPROBES_TRAP(0x170) KPROBES_TRAP(0x171) BTRAP(0x172)
tl0_resv170: KPROBES_TRAP(0x170) KPROBES_TRAP(0x171) KGDB_TRAP(0x172)
tl0_resv173: BTRAP(0x173) BTRAP(0x174) BTRAP(0x175) BTRAP(0x176) BTRAP(0x177)
tl0_resv178: BTRAP(0x178) BTRAP(0x179) BTRAP(0x17a) BTRAP(0x17b) BTRAP(0x17c)
tl0_resv17d: BTRAP(0x17d) BTRAP(0x17e) BTRAP(0x17f)
......
arch/sparc64/kernel/utrap.S 0 → 100644
View file @ 7cece14a
.globl utrap_trap
.type utrap_trap,#function
utrap_trap: /* %g3=handler,%g4=level */
TRAP_LOAD_THREAD_REG(%g6, %g1)
ldx [%g6 + TI_UTRAPS], %g1
brnz,pt %g1, invoke_utrap
nop
ba,pt %xcc, etrap
rd %pc, %g7
mov %l4, %o1
call bad_trap
add %sp, PTREGS_OFF, %o0
ba,pt %xcc, rtrap
nop
invoke_utrap:
sllx %g3, 3, %g3
ldx [%g1 + %g3], %g1
save %sp, -128, %sp
rdpr %tstate, %l6
rdpr %cwp, %l7
andn %l6, TSTATE_CWP, %l6
wrpr %l6, %l7, %tstate
rdpr %tpc, %l6
rdpr %tnpc, %l7
wrpr %g1, 0, %tnpc
done
.size utrap_trap,.-utrap_trap
arch/sparc64/mm/ultra.S
View file @ 7cece14a
......@@ -676,6 +676,33 @@ xcall_new_mmu_context_version:
wr %g0, (1 << PIL_SMP_CTX_NEW_VERSION), %set_softint
retry
#ifdef CONFIG_KGDB
.globl xcall_kgdb_capture
xcall_kgdb_capture:
661: rdpr %pstate, %g2
wrpr %g2, PSTATE_IG | PSTATE_AG, %pstate
.section .sun4v_2insn_patch, "ax"
.word 661b
nop
nop
.previous
rdpr %pil, %g2
wrpr %g0, 15, %pil
sethi %hi(109f), %g7
ba,pt %xcc, etrap_irq
109: or %g7, %lo(109b), %g7
#ifdef CONFIG_TRACE_IRQFLAGS
call trace_hardirqs_off
nop
#endif
call smp_kgdb_capture_client
add %sp, PTREGS_OFF, %o0
/* Has to be a non-v9 branch due to the large distance. */
ba rtrap_xcall
ldx [%sp + PTREGS_OFF + PT_V9_TSTATE], %l1
#endif
#endif /* CONFIG_SMP */
......
drivers/misc/kgdbts.c
View file @ 7cece14a
......@@ -132,7 +132,7 @@ static int send_ack;
static int final_ack;
static int hw_break_val;
static int hw_break_val2;
#if defined(CONFIG_ARM) || defined(CONFIG_MIPS)
#if defined(CONFIG_ARM) || defined(CONFIG_MIPS) || defined(CONFIG_SPARC)
static int arch_needs_sstep_emulation = 1;
#else
static int arch_needs_sstep_emulation;
......
include/asm-sparc/head.h
View file @ 7cece14a
......@@ -52,6 +52,17 @@
nop; \
nop;
#ifdef CONFIG_KGDB
#define KGDB_TRAP(num) \
b kgdb_trap_low; \
rd %psr,%l0; \
nop; \
nop;
#else
#define KGDB_TRAP(num) \
BAD_TRAP(num)
#endif
/* The Get Condition Codes software trap for userland. */
#define GETCC_TRAP \
b getcc_trap_handler; mov %psr, %l0; nop; nop;
......
include/asm-sparc/kgdb.h
View file @ 7cece14a
/* $Id: kgdb.h,v 1.8 1998/01/07 06:33:44 baccala Exp $
* kgdb.h: Defines and declarations for serial line source level
* remote debugging of the Linux kernel using gdb.
*
* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
*/
#ifndef _SPARC_KGDB_H
#define _SPARC_KGDB_H
#ifndef __ASSEMBLY__
/* To init the kgdb engine. */
extern void set_debug_traps(void);
/* To enter the debugger explicitly. */
extern void breakpoint(void);
/* For convenience we define the format of a kgdb trap breakpoint
* frame here also.
*/
struct kgdb_frame {
unsigned long globals[8];
unsigned long outs[8];
unsigned long locals[8];
unsigned long ins[8];
unsigned long fpregs[32];
unsigned long y;
unsigned long psr;
unsigned long wim;
unsigned long tbr;
unsigned long pc;
unsigned long npc;
unsigned long fpsr;
unsigned long cpsr;
#ifdef CONFIG_SPARC32
#define BUFMAX 2048
#else
#define BUFMAX 4096
#endif
enum regnames {
GDB_G0, GDB_G1, GDB_G2, GDB_G3, GDB_G4, GDB_G5, GDB_G6, GDB_G7,
GDB_O0, GDB_O1, GDB_O2, GDB_O3, GDB_O4, GDB_O5, GDB_SP, GDB_O7,
GDB_L0, GDB_L1, GDB_L2, GDB_L3, GDB_L4, GDB_L5, GDB_L6, GDB_L7,
GDB_I0, GDB_I1, GDB_I2, GDB_I3, GDB_I4, GDB_I5, GDB_FP, GDB_I7,
GDB_F0,
GDB_F31 = GDB_F0 + 31,
#ifdef CONFIG_SPARC32
GDB_Y, GDB_PSR, GDB_WIM, GDB_TBR, GDB_PC, GDB_NPC,
GDB_FSR, GDB_CSR,
#else
GDB_F32 = GDB_F0 + 32,
GDB_F62 = GDB_F32 + 15,
GDB_PC, GDB_NPC, GDB_STATE, GDB_FSR, GDB_FPRS, GDB_Y,
#endif
};
#endif /* !(__ASSEMBLY__) */
/* Macros for assembly usage of the kgdb breakpoint frame. */
#define KGDB_G0 0x000
#define KGDB_G1 0x004
#define KGDB_G2 0x008
#define KGDB_G4 0x010
#define KGDB_G6 0x018
#define KGDB_I0 0x020
#define KGDB_I2 0x028
#define KGDB_I4 0x030
#define KGDB_I6 0x038
#define KGDB_Y 0x100
#define KGDB_PSR 0x104
#define KGDB_WIM 0x108
#define KGDB_TBR 0x10c
#define KGDB_PC 0x110
#define KGDB_NPC 0x114
#define SAVE_KGDB_GLOBALS(reg) \
std %g0, [%reg + STACKFRAME_SZ + KGDB_G0]; \
std %g2, [%reg + STACKFRAME_SZ + KGDB_G2]; \
std %g4, [%reg + STACKFRAME_SZ + KGDB_G4]; \
std %g6, [%reg + STACKFRAME_SZ + KGDB_G6];
#define SAVE_KGDB_INS(reg) \
std %i0, [%reg + STACKFRAME_SZ + KGDB_I0]; \
std %i2, [%reg + STACKFRAME_SZ + KGDB_I2]; \
std %i4, [%reg + STACKFRAME_SZ + KGDB_I4]; \
std %i6, [%reg + STACKFRAME_SZ + KGDB_I6];
#define SAVE_KGDB_SREGS(reg, reg_y, reg_psr, reg_wim, reg_tbr, reg_pc, reg_npc) \
st %reg_y, [%reg + STACKFRAME_SZ + KGDB_Y]; \
st %reg_psr, [%reg + STACKFRAME_SZ + KGDB_PSR]; \
st %reg_wim, [%reg + STACKFRAME_SZ + KGDB_WIM]; \
st %reg_tbr, [%reg + STACKFRAME_SZ + KGDB_TBR]; \
st %reg_pc, [%reg + STACKFRAME_SZ + KGDB_PC]; \
st %reg_npc, [%reg + STACKFRAME_SZ + KGDB_NPC];
#define LOAD_KGDB_GLOBALS(reg) \
ld [%reg + STACKFRAME_SZ + KGDB_G1], %g1; \
ldd [%reg + STACKFRAME_SZ + KGDB_G2], %g2; \
ldd [%reg + STACKFRAME_SZ + KGDB_G4], %g4; \
ldd [%reg + STACKFRAME_SZ + KGDB_G6], %g6;
#ifdef CONFIG_SPARC32
#define NUMREGBYTES ((GDB_CSR + 1) * 4)
#else
#define NUMREGBYTES ((GDB_Y + 1) * 8)
#endif
#define LOAD_KGDB_INS(reg) \
ldd [%reg + STACKFRAME_SZ + KGDB_I0], %i0; \
ldd [%reg + STACKFRAME_SZ + KGDB_I2], %i2; \
ldd [%reg + STACKFRAME_SZ + KGDB_I4], %i4; \
ldd [%reg + STACKFRAME_SZ + KGDB_I6], %i6;
extern void arch_kgdb_breakpoint(void);
#define LOAD_KGDB_SREGS(reg, reg_y, reg_psr, reg_wim, reg_tbr, reg_pc, reg_npc) \
ld [%reg + STACKFRAME_SZ + KGDB_Y], %reg_y; \
ld [%reg + STACKFRAME_SZ + KGDB_PSR], %reg_psr; \
ld [%reg + STACKFRAME_SZ + KGDB_WIM], %reg_wim; \
ld [%reg + STACKFRAME_SZ + KGDB_TBR], %reg_tbr; \
ld [%reg + STACKFRAME_SZ + KGDB_PC], %reg_pc; \
ld [%reg + STACKFRAME_SZ + KGDB_NPC], %reg_npc;
#define BREAK_INSTR_SIZE 4
#define CACHE_FLUSH_IS_SAFE 1
#endif /* !(_SPARC_KGDB_H) */
#endif /* _SPARC_KGDB_H */
include/asm-sparc/smp.h
View file @ 7cece14a
......@@ -51,13 +51,11 @@ void smp_bogo(struct seq_file *);
void smp_info(struct seq_file *);
BTFIXUPDEF_CALL(void, smp_cross_call, smpfunc_t, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long)
BTFIXUPDEF_CALL(void, smp_message_pass, int, int, unsigned long, int)
BTFIXUPDEF_CALL(int, __hard_smp_processor_id, void)
BTFIXUPDEF_BLACKBOX(hard_smp_processor_id)
BTFIXUPDEF_BLACKBOX(load_current)
#define smp_cross_call(func,arg1,arg2,arg3,arg4,arg5) BTFIXUP_CALL(smp_cross_call)(func,arg1,arg2,arg3,arg4,arg5)
#define smp_message_pass(target,msg,data,wait) BTFIXUP_CALL(smp_message_pass)(target,msg,data,wait)
static inline void xc0(smpfunc_t func) { smp_cross_call(func, 0, 0, 0, 0, 0); }
static inline void xc1(smpfunc_t func, unsigned long arg1)
......
include/asm-sparc/system.h
View file @ 7cece14a
......@@ -94,6 +94,8 @@ extern void fpsave(unsigned long *fpregs, unsigned long *fsr,
} while(0)
#endif
extern void flushw_all(void);
/*
* Flush windows so that the VM switch which follows
* would not pull the stack from under us.
......
include/asm-sparc64/kgdb.h 0 → 100644
View file @ 7cece14a
#include <asm-sparc/kgdb.h>
include/asm-sparc64/pil.h
View file @ 7cece14a
......@@ -19,11 +19,4 @@
#define PIL_SMP_CTX_NEW_VERSION 4
#define PIL_DEVICE_IRQ 5
#ifndef __ASSEMBLY__
#define PIL_RESERVED(PIL) ((PIL) == PIL_SMP_CALL_FUNC || \
(PIL) == PIL_SMP_RECEIVE_SIGNAL || \
(PIL) == PIL_SMP_CAPTURE || \
(PIL) == PIL_SMP_CTX_NEW_VERSION)
#endif
#endif /* !(_SPARC64_PIL_H) */
include/asm-sparc64/system.h
View file @ 7cece14a
......@@ -180,12 +180,13 @@ do { if (test_thread_flag(TIF_PERFCTR)) { \
"ldx [%%sp + 2047 + 0x70], %%i6\n\t" \
"ldx [%%sp + 2047 + 0x78], %%i7\n\t" \
"ldx [%%g6 + %9], %%g4\n\t" \
"brz,pt %%o7, 1f\n\t" \
"brz,pt %%o7, switch_to_pc\n\t" \
" mov %%g7, %0\n\t" \
"sethi %%hi(ret_from_syscall), %%g1\n\t" \
"jmpl %%g1 + %%lo(ret_from_syscall), %%g0\n\t" \
" nop\n\t" \
"1:\n\t" \
".globl switch_to_pc\n\t" \
"switch_to_pc:\n\t" \
: "=&r" (last), "=r" (current), "=r" (current_thread_info_reg), \
"=r" (__local_per_cpu_offset) \
: "0" (task_thread_info(next)), \
......
include/asm-sparc64/ttable.h
View file @ 7cece14a
......@@ -175,6 +175,12 @@
#define KPROBES_TRAP(lvl) TRAP_ARG(bad_trap, lvl)
#endif
#ifdef CONFIG_KGDB
#define KGDB_TRAP(lvl) TRAP_IRQ(kgdb_trap, lvl)
#else
#define KGDB_TRAP(lvl) TRAP_ARG(bad_trap, lvl)
#endif
#define SUN4V_ITSB_MISS \
ldxa [%g0] ASI_SCRATCHPAD, %g2; \
ldx [%g2 + HV_FAULT_I_ADDR_OFFSET], %g4; \
......
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