diff options
Diffstat (limited to 'm4/pc_from_ucontext.m4')
| -rw-r--r-- | m4/pc_from_ucontext.m4 | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/m4/pc_from_ucontext.m4 b/m4/pc_from_ucontext.m4 index c9224bc..7114bd0 100644 --- a/m4/pc_from_ucontext.m4 +++ b/m4/pc_from_ucontext.m4 @@ -20,6 +20,7 @@ AC_DEFUN([AC_PC_FROM_UCONTEXT], AC_CHECK_HEADERS(sys/ucontext.h) # ucontext on OS X 10.6 (at least) fi AC_CHECK_HEADERS(cygwin/signal.h) # ucontext on cywgin + AC_CHECK_HEADERS(asm/ptrace.h) # get ptrace macros, e.g. PT_NIP 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="$pc_fields uc_mcontext.gregs[[REG_EIP]]" # Linux (i386) @@ -53,14 +54,23 @@ AC_DEFUN([AC_PC_FROM_UCONTEXT], How to access the PC from a struct ucontext) AC_MSG_RESULT([$pc_field]) pc_field_found=true) - elif test "x$ac_cv_header_sys_ucontext_h" = xyes; then + elif test "x$ac_cv_header_asm_ptrace_h" = xyes -a "x$ac_cv_header_sys_ucontext_h" = xyes; then AC_TRY_COMPILE([#define _GNU_SOURCE 1 + #include <asm/ptrace.h> #include <sys/ucontext.h>], [ucontext_t u; return u.$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) + elif 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) elif test "x$ac_cv_header_ucontext_h" = xyes; then AC_TRY_COMPILE([#define _GNU_SOURCE 1 #include <ucontext.h>], |