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| author | andrew <andrew@FreeBSD.org> | 2013-03-10 02:40:50 +0000 |
|---|---|---|
| committer | andrew <andrew@FreeBSD.org> | 2013-03-10 02:40:50 +0000 |
| commit | 8ddf10d5e6fd47c422527cf8868274e41cbcf90c (patch) | |
| tree | 524bd467477ac8175b45371aa59605664e952a28 /sys/arm/arm | |
| parent | ca62d86bb1fcf369c2dced99f4b5ff55e8312d9d (diff) | |
| download | FreeBSD-src-8ddf10d5e6fd47c422527cf8868274e41cbcf90c.zip FreeBSD-src-8ddf10d5e6fd47c422527cf8868274e41cbcf90c.tar.gz | |
Update how we read the stack pointer to work on both GCC and clang.
Diffstat (limited to 'sys/arm/arm')
| -rw-r--r-- | sys/arm/arm/db_trace.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/sys/arm/arm/db_trace.c b/sys/arm/arm/db_trace.c index 89ec507..1d03ab4 100644 --- a/sys/arm/arm/db_trace.c +++ b/sys/arm/arm/db_trace.c @@ -612,10 +612,13 @@ db_trace_self(void) { #ifdef __ARM_EABI__ struct unwind_state state; - register uint32_t sp __asm__ ("sp"); + uint32_t sp; + + /* Read the stack pointer */ + __asm __volatile("mov %0, sp" : "=&r" (sp)); state.registers[FP] = (uint32_t)__builtin_frame_address(0); - state.registers[SP] = (uint32_t)sp; + state.registers[SP] = sp; state.registers[LR] = (uint32_t)__builtin_return_address(0); state.registers[PC] = (uint32_t)db_trace_self; |
