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* [glibc/maskray/grte] Forward-port addition of _google_dl_debug_state_hook
@ 2021-08-27 23:23 Fangrui Song
0 siblings, 0 replies; only message in thread
From: Fangrui Song @ 2021-08-27 23:23 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=fc36100b272323e826a41617746f6fe54afa4484
commit fc36100b272323e826a41617746f6fe54afa4484
Author: Stan Shebs <stanshebs@google.com>
Date: Tue Mar 13 11:53:48 2018 -0700
Forward-port addition of _google_dl_debug_state_hook
Diff:
---
elf/Versions | 2 ++
elf/dl-debug.c | 4 ++++
2 files changed, 6 insertions(+)
diff --git a/elf/Versions b/elf/Versions
index 3b09901f6c..80cf1c47aa 100644
--- a/elf/Versions
+++ b/elf/Versions
@@ -78,5 +78,7 @@ ld {
# Set value of a tunable.
__tunable_get_val;
+
+ _google_dl_debug_state_hook;
}
}
diff --git a/elf/dl-debug.c b/elf/dl-debug.c
index 14d1125fe6..390ef994dd 100644
--- a/elf/dl-debug.c
+++ b/elf/dl-debug.c
@@ -64,6 +64,8 @@ _dl_debug_initialize (ElfW(Addr) ldbase, Lmid_t ns)
}
+void (*_google_dl_debug_state_hook)(const struct r_debug *);
+
/* This function exists solely to have a breakpoint set on it by the
debugger. The debugger is supposed to find this function's address by
examining the r_brk member of struct r_debug, but GDB 4.15 in fact looks
@@ -71,5 +73,7 @@ _dl_debug_initialize (ElfW(Addr) ldbase, Lmid_t ns)
void
_dl_debug_state (void)
{
+ if (_google_dl_debug_state_hook)
+ _google_dl_debug_state_hook(&_r_debug);
}
rtld_hidden_def (_dl_debug_state)
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