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Diffstat (limited to 'arch/mips/include/asm/stacktrace.h')
-rw-r--r--arch/mips/include/asm/stacktrace.h64
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 */