Commit 1aefe328 authored by Vineet Gupta's avatar Vineet Gupta Committed by Greg Kroah-Hartman

ARCv2: save r30 on kernel entry as gcc uses it for code-gen

commit ecd43afd upstream.

This is not exposed to userspace debugers yet, which can be done
independently as a seperate patch !
Signed-off-by: default avatarVineet Gupta <vgupta@synopsys.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 82a0d8aa
......@@ -16,6 +16,7 @@
;
; Now manually save: r12, sp, fp, gp, r25
PUSH r30
PUSH r12
; Saving pt_regs->sp correctly requires some extra work due to the way
......@@ -72,6 +73,7 @@
POPAX AUX_USER_SP
1:
POP r12
POP r30
.endm
......
......@@ -84,7 +84,7 @@ struct pt_regs {
unsigned long fp;
unsigned long sp; /* user/kernel sp depending on where we came from */
unsigned long r12;
unsigned long r12, r30;
/*------- Below list auto saved by h/w -----------*/
unsigned long r0, r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11;
......
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