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authorVincent Ambo <mail@tazj.in>2022-02-07T19·15+0300
committertazjin <tazjin@tvl.su>2022-02-07T22·25+0000
commit5ed7ef8089a6914a81b7592d2b6db93c5d87a1e2 (patch)
treed1b86294fd613ed62f131a4ba67bc6e3adf2fc61 /third_party/glog/m4/pc_from_ucontext.m4
parent18c8c41b5c2de5a08530b5185cefef86f6ffaff5 (diff)
chore(3p/glog): Unvendor glog r/3784
... and build //third_party/nix with the one from nixpkgs.

Change-Id: Iae7f1772a31286f2c22955cdc1fe61ee82d112aa
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3016
Tested-by: BuildkiteCI
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: grfn <grfn@gws.fyi>
Diffstat (limited to 'third_party/glog/m4/pc_from_ucontext.m4')
-rw-r--r--third_party/glog/m4/pc_from_ucontext.m471
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])