diff options
Diffstat (limited to 'arch/mips/include/asm/stacktrace.h')
| -rw-r--r-- | arch/mips/include/asm/stacktrace.h | 64 |
1 files changed, 50 insertions, 14 deletions
diff --git a/arch/mips/include/asm/stacktrace.h b/arch/mips/include/asm/stacktrace.h index 780ee2c2a2ac..10c4e9c84448 100644 --- a/arch/mips/include/asm/stacktrace.h +++ b/arch/mips/include/asm/stacktrace.h @@ -2,6 +2,8 @@ #define _ASM_STACKTRACE_H #include <asm/ptrace.h> +#include <asm/asm.h> +#include <linux/stringify.h> #ifdef CONFIG_KALLSYMS extern int raw_show_trace; @@ -20,6 +22,14 @@ static inline unsigned long unwind_stack(struct task_struct *task, } #endif +#define STR_PTR_LA __stringify(PTR_LA) +#define STR_LONG_S __stringify(LONG_S) +#define STR_LONG_L __stringify(LONG_L) +#define STR_LONGSIZE __stringify(LONGSIZE) + +#define STORE_ONE_REG(r) \ + STR_LONG_S " $" __stringify(r)",("STR_LONGSIZE"*"__stringify(r)")(%1)\n\t" + static __always_inline void prepare_frametrace(struct pt_regs *regs) { #ifndef CONFIG_KALLSYMS @@ -32,21 +42,47 @@ static __always_inline void prepare_frametrace(struct pt_regs *regs) __asm__ __volatile__( ".set push\n\t" ".set noat\n\t" -#ifdef CONFIG_64BIT - "1: dla $1, 1b\n\t" - "sd $1, %0\n\t" - "sd $29, %1\n\t" - "sd $31, %2\n\t" -#else - "1: la $1, 1b\n\t" - "sw $1, %0\n\t" - "sw $29, %1\n\t" - "sw $31, %2\n\t" -#endif + /* Store $1 so we can use it */ + STR_LONG_S " $1,"STR_LONGSIZE"(%1)\n\t" + /* Store the PC */ + "1: " STR_PTR_LA " $1, 1b\n\t" + STR_LONG_S " $1,%0\n\t" + STORE_ONE_REG(2) + STORE_ONE_REG(3) + STORE_ONE_REG(4) + STORE_ONE_REG(5) + STORE_ONE_REG(6) + STORE_ONE_REG(7) + STORE_ONE_REG(8) + STORE_ONE_REG(9) + STORE_ONE_REG(10) + STORE_ONE_REG(11) + STORE_ONE_REG(12) + STORE_ONE_REG(13) + STORE_ONE_REG(14) + STORE_ONE_REG(15) + STORE_ONE_REG(16) + STORE_ONE_REG(17) + STORE_ONE_REG(18) + STORE_ONE_REG(19) + STORE_ONE_REG(20) + STORE_ONE_REG(21) + STORE_ONE_REG(22) + STORE_ONE_REG(23) + STORE_ONE_REG(24) + STORE_ONE_REG(25) + STORE_ONE_REG(26) + STORE_ONE_REG(27) + STORE_ONE_REG(28) + STORE_ONE_REG(29) + STORE_ONE_REG(30) + STORE_ONE_REG(31) + /* Restore $1 */ + STR_LONG_L " $1,"STR_LONGSIZE"(%1)\n\t" ".set pop\n\t" - : "=m" (regs->cp0_epc), - "=m" (regs->regs[29]), "=m" (regs->regs[31]) - : : "memory"); + : "=m" (regs->cp0_epc) + : "r" (regs->regs) + : "memory"); } #endif /* _ASM_STACKTRACE_H */ |