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Fix and refactoring of code used to get registers on crash.

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This fixes compilation on FreeBSD (and possibly other systems) by
not using ucontext_t at all if HAVE_BACKTRACE is not defined.
Also the ifdefs to get the registers are modified to explicitly test for the
operating system in the first level, and the arch in the second level
of nesting.
This commit is contained in:
antirez 2012-04-24 11:07:15 +02:00
parent c4a4755286
commit a66a496349
1 changed files with 32 additions and 20 deletions
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52
src/debug.c
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@ -398,30 +398,31 @@ void bugReportStart(void) {
#ifdef HAVE_BACKTRACE
static void *getMcontextEip(ucontext_t *uc) {
#if defined(__FreeBSD__)
return (void*) uc->uc_mcontext.mc_eip;
#elif defined(__dietlibc__)
return (void*) uc->uc_mcontext.eip;
#elif defined(__APPLE__) && !defined(MAC_OS_X_VERSION_10_6)
#if __x86_64__
#if defined(__APPLE__) && !defined(MAC_OS_X_VERSION_10_6)
/* OSX < 10.6 */
#if defined(__x86_64__)
return (void*) uc->uc_mcontext->__ss.__rip;
#elif __i386__
#elif defined(__i386__)
return (void*) uc->uc_mcontext->__ss.__eip;
#else
#else
return (void*) uc->uc_mcontext->__ss.__srr0;
#endif
#endif
#elif defined(__APPLE__) && defined(MAC_OS_X_VERSION_10_6)
#if defined(_STRUCT_X86_THREAD_STATE64) && !defined(__i386__)
/* OSX >= 10.6 */
#if defined(_STRUCT_X86_THREAD_STATE64) && !defined(__i386__)
return (void*) uc->uc_mcontext->__ss.__rip;
#else
#else
return (void*) uc->uc_mcontext->__ss.__eip;
#endif
#elif defined(__i386__)
#endif
#elif defined(__linux__)
/* Linux */
#if defined(__i386__)
return (void*) uc->uc_mcontext.gregs[14]; /* Linux 32 */
#elif defined(__X86_64__) || defined(__x86_64__)
#elif defined(__X86_64__) || defined(__x86_64__)
return (void*) uc->uc_mcontext.gregs[16]; /* Linux 64 */
#elif defined(__ia64__) /* Linux IA64 */
#elif defined(__ia64__) /* Linux IA64 */
return (void*) uc->uc_mcontext.sc_ip;
#endif
#else
return NULL;
#endif
@ -439,8 +440,11 @@ void logStackContent(void **sp) {
void logRegisters(ucontext_t *uc) {
redisLog(REDIS_WARNING, "--- REGISTERS");
/* OSX */
#if defined(__APPLE__) && defined(MAC_OS_X_VERSION_10_6)
#if defined(_STRUCT_X86_THREAD_STATE64) && !defined(__i386__)
/* OSX AMD64 */
#if defined(_STRUCT_X86_THREAD_STATE64) && !defined(__i386__)
redisLog(REDIS_WARNING,
"\n"
"RAX:%016lx RBX:%016lx\nRCX:%016lx RDX:%016lx\n"
@ -471,7 +475,8 @@ void logRegisters(ucontext_t *uc) {
uc->uc_mcontext->__ss.__gs
);
logStackContent((void**)uc->uc_mcontext->__ss.__rsp);
#else
#else
/* OSX x86 */
redisLog(REDIS_WARNING,
"\n"
"EAX:%08lx EBX:%08lx ECX:%08lx EDX:%08lx\n"
@ -496,8 +501,11 @@ void logRegisters(ucontext_t *uc) {
uc->uc_mcontext->__ss.__gs
);
logStackContent((void**)uc->uc_mcontext->__ss.__esp);
#endif
#elif defined(__i386__)
#endif
/* Linux */
#elif defined(__linux__)
/* Linux x86 */
#if defined(__i386__)
redisLog(REDIS_WARNING,
"\n"
"EAX:%08lx EBX:%08lx ECX:%08lx EDX:%08lx\n"
@ -522,7 +530,8 @@ void logRegisters(ucontext_t *uc) {
uc->uc_mcontext.gregs[0]
);
logStackContent((void**)uc->uc_mcontext.gregs[7]);
#elif defined(__X86_64__) || defined(__x86_64__)
#elif defined(__X86_64__) || defined(__x86_64__)
/* Linux AMD64 */
redisLog(REDIS_WARNING,
"\n"
"RAX:%016lx RBX:%016lx\nRCX:%016lx RDX:%016lx\n"
@ -551,6 +560,7 @@ void logRegisters(ucontext_t *uc) {
uc->uc_mcontext.gregs[18]
);
logStackContent((void**)uc->uc_mcontext.gregs[15]);
#endif
#else
redisLog(REDIS_WARNING,
" Dumping of registers not supported for this OS/arch");
@ -677,7 +687,9 @@ void sigsegvHandler(int sig, siginfo_t *info, void *secret) {
#include <sys/time.h>
void watchdogSignalHandler(int sig, siginfo_t *info, void *secret) {
#ifdef HAVE_BACKTRACE
ucontext_t *uc = (ucontext_t*) secret;
#endif
REDIS_NOTUSED(info);
REDIS_NOTUSED(sig);
sds st, log;