* [hurd, commited] hurd: document that gcc&gdb look at the trampoline code
@ 2020-06-08 12:43 Samuel Thibault
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From: Samuel Thibault @ 2020-06-08 12:43 UTC (permalink / raw)
To: libc-alpha; +Cc: Samuel Thibault, commit-hurd
* sysdeps/mach/hurd/i386/trampoline.c (rpc_wait_trampoline): Document
which gcc and gdb files look at the code of the trampoline.
---
sysdeps/mach/hurd/i386/trampoline.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/sysdeps/mach/hurd/i386/trampoline.c b/sysdeps/mach/hurd/i386/trampoline.c
index e7eb316fce..8c7976919c 100644
--- a/sysdeps/mach/hurd/i386/trampoline.c
+++ b/sysdeps/mach/hurd/i386/trampoline.c
@@ -227,7 +227,11 @@ _hurd_setup_sighandler (struct hurd_sigstate *ss, __sighandler_t handler,
}
/* The trampoline code follows. This used to be located inside
- _hurd_setup_sighandler, but was optimized away by gcc 2.95. */
+ _hurd_setup_sighandler, but was optimized away by gcc 2.95.
+
+ If you modify this, update
+ - in gcc: libgcc/config/i386/gnu-unwind.h x86_gnu_fallback_frame_state,
+ - in gdb: gdb/i386-gnu-tdep.c gnu_sigtramp_code. */
asm ("rpc_wait_trampoline:\n");
/* This is the entry point when we have an RPC reply message to receive
--
2.26.2
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2020-06-08 12:43 [hurd, commited] hurd: document that gcc&gdb look at the trampoline code Samuel Thibault
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