diff options
Diffstat (limited to 'include/asm-mips/stackframe.h')
| -rw-r--r-- | include/asm-mips/stackframe.h | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/include/asm-mips/stackframe.h b/include/asm-mips/stackframe.h index 2f436e79f..127654aab 100644 --- a/include/asm-mips/stackframe.h +++ b/include/asm-mips/stackframe.h @@ -8,6 +8,9 @@ #ifndef __ASM_MIPS_STACKFRAME_H #define __ASM_MIPS_STACKFRAME_H +#include <asm/addrspace.h> +#include <asm/mipsregs.h> +#include <asm/processor.h> #include <asm/asm.h> #include <asm/offset.h> #include <linux/config.h> @@ -70,6 +73,22 @@ __asm__ ( \ /* Used in declaration of save_static functions. */ #define static_unused static __attribute__((unused)) + +#ifdef CONFIG_SMP +# define GET_SAVED_SP \ + mfc0 k0, CP0_CONTEXT; \ + lui k1, %hi(kernelsp); \ + srl k0, k0, 23; \ + sll k0, k0, 2; \ + addu k1, k0; \ + lw k1, %lo(kernelsp)(k1); + +#else +# define GET_SAVED_SP \ + lui k1, %hi(kernelsp); \ + lw k1, %lo(kernelsp)(k1); +#endif + #define SAVE_SOME \ .set push; \ .set reorder; \ @@ -80,13 +99,12 @@ __asm__ ( \ move k1, sp; \ .set reorder; \ /* Called from user mode, new stack. */ \ - lui k1, %hi(kernelsp); \ - lw k1, %lo(kernelsp)(k1); \ + GET_SAVED_SP \ 8: \ move k0, sp; \ subu sp, k1, PT_SIZE; \ sw k0, PT_R29(sp); \ - sw $3, PT_R3(sp); \ + sw $3, PT_R3(sp); \ sw $0, PT_R0(sp); \ mfc0 v1, CP0_STATUS; \ sw $2, PT_R2(sp); \ |