diff options
| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2005-04-26 15:18:59 +0100 |
|---|---|---|
| committer | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2005-04-26 15:18:59 +0100 |
| commit | 925c8a1a8cb9d7a33a8e39516d7fb679030553fc (patch) | |
| tree | 47cefc6d9eb3d8d81613e3fbd790a22d1edb23b1 /arch/arm/kernel | |
| parent | 1ec42c0c97186fadc48810ccaf2dc573cd957ea1 (diff) | |
[PATCH] ARM: pt_regs offsets
Generate pt_regs S_xx offsets from the structure itself instead
of #defining them.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/kernel')
| -rw-r--r-- | arch/arm/kernel/asm-offsets.c | 20 | ||||
| -rw-r--r-- | arch/arm/kernel/entry-common.S | 7 | ||||
| -rw-r--r-- | arch/arm/kernel/entry-header.S | 31 |
3 files changed, 30 insertions, 28 deletions
diff --git a/arch/arm/kernel/asm-offsets.c b/arch/arm/kernel/asm-offsets.c index 99d43259ff8..c1ff4d1f1bf 100644 --- a/arch/arm/kernel/asm-offsets.c +++ b/arch/arm/kernel/asm-offsets.c @@ -64,6 +64,26 @@ int main(void) DEFINE(TI_VFPSTATE, offsetof(struct thread_info, vfpstate)); DEFINE(TI_IWMMXT_STATE, (offsetof(struct thread_info, fpstate)+4)&~7); BLANK(); + DEFINE(S_R0, offsetof(struct pt_regs, ARM_r0)); + DEFINE(S_R1, offsetof(struct pt_regs, ARM_r1)); + DEFINE(S_R2, offsetof(struct pt_regs, ARM_r2)); + DEFINE(S_R3, offsetof(struct pt_regs, ARM_r3)); + DEFINE(S_R4, offsetof(struct pt_regs, ARM_r4)); + DEFINE(S_R5, offsetof(struct pt_regs, ARM_r5)); + DEFINE(S_R6, offsetof(struct pt_regs, ARM_r6)); + DEFINE(S_R7, offsetof(struct pt_regs, ARM_r7)); + DEFINE(S_R8, offsetof(struct pt_regs, ARM_r8)); + DEFINE(S_R9, offsetof(struct pt_regs, ARM_r9)); + DEFINE(S_R10, offsetof(struct pt_regs, ARM_r10)); + DEFINE(S_FP, offsetof(struct pt_regs, ARM_fp)); + DEFINE(S_IP, offsetof(struct pt_regs, ARM_ip)); + DEFINE(S_SP, offsetof(struct pt_regs, ARM_sp)); + DEFINE(S_LR, offsetof(struct pt_regs, ARM_lr)); + DEFINE(S_PC, offsetof(struct pt_regs, ARM_pc)); + DEFINE(S_PSR, offsetof(struct pt_regs, ARM_cpsr)); + DEFINE(S_OLD_R0, offsetof(struct pt_regs, ARM_ORIG_r0)); + DEFINE(S_FRAME_SIZE, sizeof(struct pt_regs)); + BLANK(); #if __LINUX_ARM_ARCH__ >= 6 DEFINE(MM_CONTEXT_ID, offsetof(struct mm_struct, context.id)); BLANK(); diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S index 0cd9f7bcaad..55201db0f14 100644 --- a/arch/arm/kernel/entry-common.S +++ b/arch/arm/kernel/entry-common.S @@ -15,13 +15,6 @@ #include "entry-header.S" -/* - * We rely on the fact that R0 is at the bottom of the stack (due to - * slow/fast restore user regs). - */ -#if S_R0 != 0 -#error "Please fix" -#endif .align 5 /* diff --git a/arch/arm/kernel/entry-header.S b/arch/arm/kernel/entry-header.S index 109f4f10d31..9d4d286d380 100644 --- a/arch/arm/kernel/entry-header.S +++ b/arch/arm/kernel/entry-header.S @@ -39,30 +39,19 @@ #define ARMSWI_OFFSET 0x000f0000 @ -@ Stack format (ensured by USER_* and SVC_*) +@ Most of the stack format comes from struct pt_regs, but with +@ the addition of 8 bytes for storing syscall args 5 and 6. @ -#define S_FRAME_SIZE 72 -#define S_OLD_R0 68 -#define S_PSR 64 - -#define S_PC 60 -#define S_LR 56 -#define S_SP 52 -#define S_IP 48 -#define S_FP 44 -#define S_R10 40 -#define S_R9 36 -#define S_R8 32 -#define S_R7 28 -#define S_R6 24 -#define S_R5 20 -#define S_R4 16 -#define S_R3 12 -#define S_R2 8 -#define S_R1 4 -#define S_R0 0 #define S_OFF 8 +/* + * The SWI code relies on the fact that R0 is at the bottom of the stack + * (due to slow/fast restore user regs). + */ +#if S_R0 != 0 +#error "Please fix" +#endif + #if __LINUX_ARM_ARCH__ >= 6 .macro disable_irq cpsid i |