Date: Sun, 10 Mar 2013 02:40:50 +0000 (UTC) From: Andrew Turner <andrew@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r248124 - head/sys/arm/arm Message-ID: <201303100240.r2A2eo2t013202@svn.freebsd.org>
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Author: andrew Date: Sun Mar 10 02:40:50 2013 New Revision: 248124 URL: http://svnweb.freebsd.org/changeset/base/248124 Log: Update how we read the stack pointer to work on both GCC and clang. Modified: head/sys/arm/arm/db_trace.c Modified: head/sys/arm/arm/db_trace.c ============================================================================== --- head/sys/arm/arm/db_trace.c Sun Mar 10 02:38:35 2013 (r248123) +++ head/sys/arm/arm/db_trace.c Sun Mar 10 02:40:50 2013 (r248124) @@ -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;
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