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| author | naruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2013-03-18 04:31:59 +0000 |
|---|---|---|
| committer | naruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2013-03-18 04:31:59 +0000 |
| commit | aa24857f12718d1fa81d77695f6f5af319334d24 (patch) | |
| tree | 241c1dcb376dac2f182c23288813939dfb812d98 /vm_dump.c | |
| parent | f8eaf3c625e7a57509d74ce26a82593698fafad0 (diff) | |
| download | ruby-aa24857f12718d1fa81d77695f6f5af319334d24.tar.gz | |
* vm_dump.c (backtrace): on darwin use custom backtrace() to trace
beyond _sigtramp. darwin's backtrace can't trace beyond signal
trampoline with sigaltstack.
* configure.in: check execinfo.h on darwin.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39808 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'vm_dump.c')
| -rw-r--r-- | vm_dump.c | 55 |
1 files changed, 55 insertions, 0 deletions
@@ -428,6 +428,61 @@ rb_vmdebug_thread_dump_state(VALUE self) # if HAVE_LIBUNWIND # undef backtrace # define backtrace unw_backtrace +# elif defined(__APPLE__) && defined(__x86_64__) +# define UNW_LOCAL_ONLY +# include <libunwind.h> +# undef backtrace +int backtrace (void **trace, int size) { + unw_cursor_t cursor; unw_context_t uc; + unw_word_t ip; + int n = 0; + + unw_getcontext(&uc); + unw_init_local(&cursor, &uc); + while (unw_step(&cursor) > 0) { + unw_get_reg(&cursor, UNW_REG_IP, &ip); + trace[n++] = (void *)ip; + { + char buf[256]; + unw_get_proc_name(&cursor, buf, 256, &ip); + if (strncmp("_sigtramp", buf, sizeof("_sigtramp")) == 0) { + goto darwin_sigtramp; + } + } + } + return n; +darwin_sigtramp: + { + ucontext_t *uctx; + unw_get_reg(&cursor, UNW_X86_64_RBX, &ip); + uctx = (ucontext_t *)ip; + unw_set_reg(&cursor, UNW_X86_64_RAX, uctx->uc_mcontext->__ss.__rax); + unw_set_reg(&cursor, UNW_X86_64_RBX, uctx->uc_mcontext->__ss.__rbx); + unw_set_reg(&cursor, UNW_X86_64_RCX, uctx->uc_mcontext->__ss.__rcx); + unw_set_reg(&cursor, UNW_X86_64_RDX, uctx->uc_mcontext->__ss.__rdx); + unw_set_reg(&cursor, UNW_X86_64_RDI, uctx->uc_mcontext->__ss.__rdi); + unw_set_reg(&cursor, UNW_X86_64_RSI, uctx->uc_mcontext->__ss.__rsi); + unw_set_reg(&cursor, UNW_X86_64_RBP, uctx->uc_mcontext->__ss.__rbp); + unw_set_reg(&cursor, UNW_X86_64_RSP, 8+(uctx->uc_mcontext->__ss.__rsp)); + unw_set_reg(&cursor, UNW_X86_64_R8, uctx->uc_mcontext->__ss.__r8); + unw_set_reg(&cursor, UNW_X86_64_R9, uctx->uc_mcontext->__ss.__r9); + unw_set_reg(&cursor, UNW_X86_64_R10, uctx->uc_mcontext->__ss.__r10); + unw_set_reg(&cursor, UNW_X86_64_R11, uctx->uc_mcontext->__ss.__r11); + unw_set_reg(&cursor, UNW_X86_64_R12, uctx->uc_mcontext->__ss.__r12); + unw_set_reg(&cursor, UNW_X86_64_R13, uctx->uc_mcontext->__ss.__r13); + unw_set_reg(&cursor, UNW_X86_64_R14, uctx->uc_mcontext->__ss.__r14); + unw_set_reg(&cursor, UNW_X86_64_R15, uctx->uc_mcontext->__ss.__r15); + ip = *(unw_word_t*)uctx->uc_mcontext->__ss.__rsp; + unw_set_reg(&cursor, UNW_REG_IP, ip); + trace[n++] = (void *)(unw_word_t)uctx->uc_mcontext->__ss.__rip; + trace[n++] = (void *)ip; + } + while (unw_step(&cursor) > 0) { + unw_get_reg(&cursor, UNW_REG_IP, &ip); + trace[n++] = (void *)ip; + } + return n; +} # elif defined(BROKEN_BACKTRACE) # undef HAVE_BACKTRACE # define HAVE_BACKTRACE 0 |