diff options
Diffstat (limited to 'third_party/glog/m4/pc_from_ucontext.m4')
| -rw-r--r-- | third_party/glog/m4/pc_from_ucontext.m4 | 71 |
1 files changed, 0 insertions, 71 deletions
diff --git a/third_party/glog/m4/pc_from_ucontext.m4 b/third_party/glog/m4/pc_from_ucontext.m4 deleted file mode 100644 index daffddb536fd..000000000000 --- a/third_party/glog/m4/pc_from_ucontext.m4 +++ /dev/null @@ -1,71 +0,0 @@ -# We want to access the "PC" (Program Counter) register from a struct -# ucontext. Every system has its own way of doing that. We try all the -# possibilities we know about. Note REG_PC should come first (REG_RIP -# is also defined on solaris, but does the wrong thing). - -# OpenBSD doesn't have ucontext.h, but we can get PC from ucontext_t -# by using signal.h. - -# The first argument of AC_PC_FROM_UCONTEXT will be invoked when we -# cannot find a way to obtain PC from ucontext. - -AC_DEFUN([AC_PC_FROM_UCONTEXT], - [AC_CHECK_HEADERS(ucontext.h) - AC_CHECK_HEADERS(sys/ucontext.h) # ucontext on OS X 10.6 (at least) - AC_MSG_CHECKING([how to access the program counter from a struct ucontext]) - pc_fields=" uc_mcontext.gregs[[REG_PC]]" # Solaris x86 (32 + 64 bit) - pc_fields="$pc_fields uc_mcontext.gregs[[REG_EIP]]" # Linux (i386) - pc_fields="$pc_fields uc_mcontext.gregs[[REG_RIP]]" # Linux (x86_64) - pc_fields="$pc_fields uc_mcontext.sc_ip" # Linux (ia64) - pc_fields="$pc_fields uc_mcontext.uc_regs->gregs[[PT_NIP]]" # Linux (ppc) - pc_fields="$pc_fields uc_mcontext.gregs[[R15]]" # Linux (arm old [untested]) - pc_fields="$pc_fields uc_mcontext.arm_pc" # Linux (arm new [untested]) - pc_fields="$pc_fields uc_mcontext.mc_eip" # FreeBSD (i386) - pc_fields="$pc_fields uc_mcontext.mc_rip" # FreeBSD (x86_64 [untested]) - pc_fields="$pc_fields uc_mcontext.__gregs[[_REG_EIP]]" # NetBSD (i386) - pc_fields="$pc_fields uc_mcontext.__gregs[[_REG_RIP]]" # NetBSD (x86_64) - pc_fields="$pc_fields uc_mcontext->ss.eip" # OS X (i386, <=10.4) - pc_fields="$pc_fields uc_mcontext->__ss.__eip" # OS X (i386, >=10.5) - pc_fields="$pc_fields uc_mcontext->ss.rip" # OS X (x86_64) - pc_fields="$pc_fields uc_mcontext->__ss.__rip" # OS X (>=10.5 [untested]) - pc_fields="$pc_fields uc_mcontext->ss.srr0" # OS X (ppc, ppc64 [untested]) - pc_fields="$pc_fields uc_mcontext->__ss.__srr0" # OS X (>=10.5 [untested]) - pc_field_found=false - for pc_field in $pc_fields; do - if ! $pc_field_found; then - if test "x$ac_cv_header_sys_ucontext_h" = xyes; then - AC_TRY_COMPILE([#define _GNU_SOURCE 1 - #include <sys/ucontext.h>], - [ucontext_t u; return u.$pc_field == 0;], - AC_DEFINE_UNQUOTED(PC_FROM_UCONTEXT, $pc_field, - How to access the PC from a struct ucontext) - AC_MSG_RESULT([$pc_field]) - pc_field_found=true) - else - AC_TRY_COMPILE([#define _GNU_SOURCE 1 - #include <ucontext.h>], - [ucontext_t u; return u.$pc_field == 0;], - AC_DEFINE_UNQUOTED(PC_FROM_UCONTEXT, $pc_field, - How to access the PC from a struct ucontext) - AC_MSG_RESULT([$pc_field]) - pc_field_found=true) - fi - fi - done - if ! $pc_field_found; then - pc_fields=" sc_eip" # OpenBSD (i386) - pc_fields="$pc_fields sc_rip" # OpenBSD (x86_64) - for pc_field in $pc_fields; do - if ! $pc_field_found; then - AC_TRY_COMPILE([#include <signal.h>], - [ucontext_t u; return u.$pc_field == 0;], - AC_DEFINE_UNQUOTED(PC_FROM_UCONTEXT, $pc_field, - How to access the PC from a struct ucontext) - AC_MSG_RESULT([$pc_field]) - pc_field_found=true) - fi - done - fi - if ! $pc_field_found; then - [$1] - fi]) |