- 30 Jan, 2008 40 commits
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Roland McGrath authored
This removes the old separate 64-bit and ia32 ptrace source files. They are no longer used. Signed-off-by:
Roland McGrath <roland@redhat.com> Signed-off-by:
Ingo Molnar <mingo@elte.hu> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Roland McGrath authored
This switches over the 64-bit build to use the shared ptrace code, instead of the old ptrace_64.c and arch/x86/ia32/ptrace32.c code. Signed-off-by:
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Roland McGrath authored
This moves the sys32_ptrace code into arch/x86/kernel/ptrace.c, verbatim except for a few hard-coded sizes replaced with sizeof. Here this code can use the shared local functions in this file. Signed-off-by:
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Roland McGrath authored
This reimplements the 64-bit IA32-emulation register access functions in arch/x86/kernel/ptrace.c, where they can share some guts with the native access functions directly. These functions are not used yet, but this paves the way to move IA32 ptrace support into this file to share its local functions. [akpm@linuxfoundation.org: Build fix] Signed-off-by:
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Roland McGrath authored
This moves the 64-bit syscall tracing functions into ptrace.c, so that ptrace_64.c becomes entirely obsolete. Signed-off-by:
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Roland McGrath authored
This adds 64-bit support to arch_ptrace in arch/x86/kernel/ptrace.c, so this function can be used for native ptrace on both 32 and 64. Signed-off-by:
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Roland McGrath authored
This merges 64-bit support into the low-level register access functions in arch/x86/kernel/ptrace.c, paving the way to share this file between 32-bit and 64-bit builds. Signed-off-by:
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Roland McGrath authored
This cleans up the getreg/putreg functions to move the special cases (segment registers and eflags) out into their own subroutines. Signed-off-by:
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Roland McGrath authored
This cleans up the FLAG_MASK macro to use symbolic constants instead of a magic number. Signed-off-by:
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Roland McGrath authored
This renames ptrace_32.c back to ptrace.c, in preparation for merging the 32/64 versions of these files. Signed-off-by:
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Roland McGrath authored
This replaces the debugreg[7] member of thread_struct with individual members debugreg0, etc. This saves two words for the dummies 4 and 5, and harmonizes the code between 32 and 64. Signed-off-by:
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Roland McGrath authored
This generalizes the getreg32 and putreg32 functions so they can be used on the current task, as well as on a task stopped in TASK_TRACED and switched off. This lays the groundwork to share this code for all kinds of user-mode machine state access, not just ptrace. Signed-off-by:
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Roland McGrath authored
This generalizes the getreg and putreg functions so they can be used on the current task, as well as on a task stopped in TASK_TRACED and switched off. This lays the groundwork to share this code for all kinds of user-mode machine state access, not just ptrace. Signed-off-by:
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Roland McGrath authored
This generalizes the getreg and putreg functions so they can be used on the current task, as well as on a task stopped in TASK_TRACED and switched off. This lays the groundwork to share this code for all kinds of user-mode machine state access, not just ptrace. Signed-off-by:
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Roland McGrath authored
This canonicalizes the indentation in the getreg and putreg functions. Signed-off-by:
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Roland McGrath authored
This canonicalizes the indentation in the getreg and putreg functions. Signed-off-by:
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Roland McGrath authored
This cleans up the getreg32/putreg32 functions to use struct pt_regs in a straightforward fashion, instead of equivalent ugly pointer arithmetic. Signed-off-by:
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Roland McGrath authored
This removes the EF_* enum from <asm/ptrace.h>. It is no longer used, and duplicates the X86_EFLAGS_* constants from <asm/processor-flags.h>. Signed-off-by:
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Roland McGrath authored
This cleans up arch/x86/kernel/setup64.c to use the X86_EFLAGS_* constants from <asm/processor-flags.h> instead of the EF_* enum in <asm/ptrace.h>. Signed-off-by:
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H. Peter Anvin authored
Switch struct sigcontext (defined in <asm/sigcontext*.h>) to using register names withut e- or r-prefixes for both 32- and 64-bit x86. This is intended as a preliminary step in unifying this code between architectures. Signed-off-by:
H. Peter Anvin <hpa@zytor.com> Signed-off-by:
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H. Peter Anvin authored
Switch struct user_regs_struct (defined in <asm/user.h>, which is no longer exported to userspace) to using register names without e- or r-prefixes for both 32 and 64 bit x86. This is intended as a preliminary step in unifying this code between architectures. Also, be a bit more strict in truncating 32-bit "extended" segment register values to 16 bits. Signed-off-by:
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H. Peter Anvin authored
We have a lot of code which differs only by the naming of specific members of structures that contain registers. In order to enable additional unifications, this patch drops the e- or r- size prefix from the register names in struct pt_regs, and drops the x- prefixes for segment registers on the 32-bit side. This patch also performs the equivalent renames in some additional places that might be candidates for unification in the future. Signed-off-by:
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Jeremy Fitzhardinge authored
The patch to suppress bitops-related warnings added a pile of ugly casts. Many of these were related to the management of x86 CPU capabilities. Clean these up by adding specific set/clear_cpu_cap macros, and use them consistently. Signed-off-by:
Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by:
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Jeremy Fitzhardinge authored
Add casts to appropriate places to silence spurious bitops warnings. Signed-off-by:
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Jeremy Fitzhardinge authored
This unifies the set/clear/test bit functions of asm/bitops.h. I have not attempted to merge the bit-finding functions, since they rely on the machine word size and can't be easily restructured to work generically without a lot of #ifdefs. In particular, the 64-bit code can assume the presence of conditional move instructions, whereas 32-bit needs to be more careful. The inline assembly for the bit operations has been changed to remove explicit sizing hints on the instructions, so the assembler will pick the appropriate instruction forms depending on the architecture and the context. Signed-off-by:
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Mike Travis authored
'for_each_possible_cpu(i)' when there's a _remote possibility_ of dereferencing a non-allocated per_cpu variable involved. All files except mm/vmstat.c are x86 arch. Thanks to pageexec@freemail.hu for pointing this out. Signed-off-by:
Mike Travis <travis@sgi.com> Cc: Christoph Lameter <clameter@sgi.com> Cc: <pageexec@freemail.hu> Cc: Andi Kleen <ak@suse.de> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
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Roland McGrath authored
This adds the PTRACE_SINGLEBLOCK request on x86, matching the ia64 feature. The implementation comes from the generic ptrace code and relies on the low-level machine support provided by arch_has_block_step() et al. Signed-off-by:
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Roland McGrath authored
This adjusts the x86 kprobes implementation to cope with per-thread MSR_IA32_DEBUGCTLMSR being set for user mode. I haven't delved deep enough into the kprobes code to be really sure this covers all the cases where the user-mode BTF setting needs to be cleared or restored. It looks about right to me. Signed-off-by:
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Roland McGrath authored
This implements user-mode step-until-branch on x86 using the BTF bit in MSR_IA32_DEBUGCTLMSR. It's just like single-step, only less so. Signed-off-by:
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Roland McGrath authored
This adds low-level support for a per-thread value of MSR_IA32_DEBUGCTLMSR. The per-thread value is switched in when TIF_DEBUGCTLMSR is set. Signed-off-by:
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Roland McGrath authored
This adds the (internal) Kconfig macro CONFIG_X86_DEBUGCTLMSR, to be defined when configuring to support only hardware that definitely supports MSR_IA32_DEBUGCTLMSR with the BTF flag. The Intel documentation says "P6 family" and later processors all have it. I think the Kconfig dependencies are right to have it set for those and unset for others (i.e., when 586 and earlier are supported). Signed-off-by:
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Roland McGrath authored
This adds constant macros for a few of the bits in MSR_IA32_DEBUGCTLMSR. Signed-off-by:
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Roland McGrath authored
This makes ptrace_request handle PTRACE_SINGLEBLOCK along with PTRACE_CONT et al. The new generic code makes use of the arch_has_block_step macro and generic entry points on machines that define them. [ mingo@elte.hu: bugfix ] Signed-off-by:
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Roland McGrath authored
This defines the new macro arch_has_block_step() in linux/ptrace.h, a default for when asm/ptrace.h does not define it. This is the analog of arch_has_single_step() for step-until-branch on machines that have it. It declares the new user_enable_block_step function, which goes with the existing user_enable_single_step and user_disable_single_step. This is not used yet, but paves the way to harmonize on this interface for the arch-specific calls on all machines. Signed-off-by:
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Roland McGrath authored
This cleans up the 32-bit ptrace code to separate the guts of the debug register access from the implementation of PTRACE_PEEKUSR and PTRACE_POKEUSR. The new functions ptrace_[gs]et_debugreg match the new 64-bit entry points for parity, but they don't need to be global. Signed-off-by:
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Roland McGrath authored
This cleans up the ia32 compat ptrace code to use shared code from native ptrace for the implementation guts of debug register access. Signed-off-by:
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Roland McGrath authored
This cleans up the 64-bit ptrace code to separate the guts of the debug register access from the implementation of PTRACE_PEEKUSR and PTRACE_POKEUSR. The new functions ptrace_[gs]et_debugreg are made global so that the ia32 code can later be changed to call them too. Signed-off-by:
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Roland McGrath authored
This cleans up the 64-bit ptrace code to use task_pt_regs instead of its own redundant code that does the same thing a different way. Signed-off-by:
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Roland McGrath authored
This cleans up the 32-bit ptrace code to use task_pt_regs instead of its own redundant code that does the same thing a different way. Signed-off-by:
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Roland McGrath authored
This removes the handling for PTRACE_CONT et al from the powerpc ptrace code, so it uses the new generic code via ptrace_request. Signed-off-by:
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