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From 321844cd2cd0676936c309669df058069c1a1db1 Mon Sep 17 00:00:00 2001
From: Oliver Reiche <oliver.reiche@huawei.com>
Date: Thu, 29 Jun 2023 15:53:01 +0200
Subject: [PATCH] Use ucontext_t not struct ucontext in linux-unwind.h files.
Backport from GCC 8.1.0
Git commit: 883312dc79806f513275b72502231c751c14ff72
Subversion revision: r249731
Original description:
Current glibc no longer gives the ucontext_t type the tag struct
ucontext, to conform with POSIX namespace rules. This requires
various linux-unwind.h files in libgcc, that were previously using
struct ucontext, to be fixed to use ucontext_t instead. This is
similar to the removal of the struct siginfo tag from siginfo_t some
years ago.
This patch changes those files to use ucontext_t instead. As the
standard name that should be unconditionally safe, so this is not
restricted to architectures supported by glibc, or conditioned on the
glibc version.
Tested compilation together with current glibc with glibc's
build-many-glibcs.py.
Co-authored-by: Joseph Myers <joseph@codesourcery.com>
---
libgcc/config/alpha/linux-unwind.h | 2 +-
libgcc/config/bfin/linux-unwind.h | 2 +-
libgcc/config/i386/linux-unwind.h | 4 ++--
libgcc/config/m68k/linux-unwind.h | 2 +-
libgcc/config/pa/linux-unwind.h | 2 +-
libgcc/config/sh/linux-unwind.h | 2 +-
libgcc/config/tilepro/linux-unwind.h | 2 +-
libgcc/config/xtensa/linux-unwind.h | 2 +-
8 files changed, 9 insertions(+), 9 deletions(-)
diff --git a/libgcc/config/alpha/linux-unwind.h b/libgcc/config/alpha/linux-unwind.h
index 6c2f02891..c1fc84486 100644
--- a/libgcc/config/alpha/linux-unwind.h
+++ b/libgcc/config/alpha/linux-unwind.h
@@ -51,7 +51,7 @@ alpha_fallback_frame_state (struct _Unwind_Context *context,
{
struct rt_sigframe {
siginfo_t info;
- struct ucontext uc;
+ ucontext_t uc;
} *rt_ = context->cfa;
sc = &rt_->uc.uc_mcontext;
}
diff --git a/libgcc/config/bfin/linux-unwind.h b/libgcc/config/bfin/linux-unwind.h
index 15bb2f12b..28d9f4207 100644
--- a/libgcc/config/bfin/linux-unwind.h
+++ b/libgcc/config/bfin/linux-unwind.h
@@ -52,7 +52,7 @@ bfin_fallback_frame_state (struct _Unwind_Context *context,
void *puc;
char retcode[8];
siginfo_t info;
- struct ucontext uc;
+ ucontext_t uc;
} *rt_ = context->cfa;
/* The void * cast is necessary to avoid an aliasing warning.
diff --git a/libgcc/config/i386/linux-unwind.h b/libgcc/config/i386/linux-unwind.h
index cd9a9a1e2..4518c1ff9 100644
--- a/libgcc/config/i386/linux-unwind.h
+++ b/libgcc/config/i386/linux-unwind.h
@@ -53,7 +53,7 @@ x86_64_fallback_frame_state (struct _Unwind_Context *context,
if (*(unsigned char *)(pc+0) == 0x48
&& *(unsigned long long *)(pc+1) == RT_SIGRETURN_SYSCALL)
{
- struct ucontext *uc_ = context->cfa;
+ ucontext_t *uc_ = context->cfa;
/* The void * cast is necessary to avoid an aliasing warning.
The aliasing warning is correct, but should not be a problem
because it does not alias anything. */
@@ -142,7 +142,7 @@ x86_fallback_frame_state (struct _Unwind_Context *context,
siginfo_t *pinfo;
void *puc;
siginfo_t info;
- struct ucontext uc;
+ ucontext_t uc;
} *rt_ = context->cfa;
/* The void * cast is necessary to avoid an aliasing warning.
The aliasing warning is correct, but should not be a problem
diff --git a/libgcc/config/m68k/linux-unwind.h b/libgcc/config/m68k/linux-unwind.h
index 053c15558..d7bc1f2c0 100644
--- a/libgcc/config/m68k/linux-unwind.h
+++ b/libgcc/config/m68k/linux-unwind.h
@@ -33,7 +33,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
/* <sys/ucontext.h> is unfortunately broken right now. */
struct uw_ucontext {
unsigned long uc_flags;
- struct ucontext *uc_link;
+ ucontext_t *uc_link;
stack_t uc_stack;
mcontext_t uc_mcontext;
unsigned long uc_filler[80];
diff --git a/libgcc/config/pa/linux-unwind.h b/libgcc/config/pa/linux-unwind.h
index 38b4eda7a..45ea66cf3 100644
--- a/libgcc/config/pa/linux-unwind.h
+++ b/libgcc/config/pa/linux-unwind.h
@@ -64,7 +64,7 @@ pa32_fallback_frame_state (struct _Unwind_Context *context,
struct sigcontext *sc;
struct rt_sigframe {
siginfo_t info;
- struct ucontext uc;
+ ucontext_t uc;
} *frame;
/* rt_sigreturn trampoline:
diff --git a/libgcc/config/sh/linux-unwind.h b/libgcc/config/sh/linux-unwind.h
index 5a78e3172..eefad5175 100644
--- a/libgcc/config/sh/linux-unwind.h
+++ b/libgcc/config/sh/linux-unwind.h
@@ -181,7 +181,7 @@ sh_fallback_frame_state (struct _Unwind_Context *context,
{
struct rt_sigframe {
siginfo_t info;
- struct ucontext uc;
+ ucontext_t uc;
} *rt_ = context->cfa;
/* The void * cast is necessary to avoid an aliasing warning.
The aliasing warning is correct, but should not be a problem
diff --git a/libgcc/config/tilepro/linux-unwind.h b/libgcc/config/tilepro/linux-unwind.h
index 27a6c4351..d2a15bb9f 100644
--- a/libgcc/config/tilepro/linux-unwind.h
+++ b/libgcc/config/tilepro/linux-unwind.h
@@ -62,7 +62,7 @@ tile_fallback_frame_state (struct _Unwind_Context *context,
struct rt_sigframe {
unsigned char save_area[C_ABI_SAVE_AREA_SIZE];
siginfo_t info;
- struct ucontext uc;
+ ucontext_t uc;
} *rt_;
/* Return if this is not a signal handler. */
diff --git a/libgcc/config/xtensa/linux-unwind.h b/libgcc/config/xtensa/linux-unwind.h
index 245649728..b7b128cf0 100644
--- a/libgcc/config/xtensa/linux-unwind.h
+++ b/libgcc/config/xtensa/linux-unwind.h
@@ -63,7 +63,7 @@ xtensa_fallback_frame_state (struct _Unwind_Context *context,
struct rt_sigframe {
siginfo_t info;
- struct ucontext uc;
+ ucontext_t uc;
} *rt_;
/* movi a2, __NR_rt_sigreturn; syscall */
--
2.30.2
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