Commit ecd43afd authored by Vineet Gupta's avatar Vineet Gupta

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

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>
parent e51d5d02
...@@ -16,6 +16,7 @@ ...@@ -16,6 +16,7 @@
; ;
; Now manually save: r12, sp, fp, gp, r25 ; Now manually save: r12, sp, fp, gp, r25
PUSH r30
PUSH r12 PUSH r12
; Saving pt_regs->sp correctly requires some extra work due to the way ; Saving pt_regs->sp correctly requires some extra work due to the way
...@@ -72,6 +73,7 @@ ...@@ -72,6 +73,7 @@
POPAX AUX_USER_SP POPAX AUX_USER_SP
1: 1:
POP r12 POP r12
POP r30
.endm .endm
......
...@@ -84,7 +84,7 @@ struct pt_regs { ...@@ -84,7 +84,7 @@ struct pt_regs {
unsigned long fp; unsigned long fp;
unsigned long sp; /* user/kernel sp depending on where we came from */ 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 -----------*/ /*------- Below list auto saved by h/w -----------*/
unsigned long r0, r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11; unsigned long r0, r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11;
......
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