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gdb: Backport a fix to build with gcc9

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(From OE-Core rev: 389d956bdacee92125c0112a58991516b866a39b)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Khem Raj
2018-12-26 12:09:51 -08:00
committed by Richard Purdie
parent 1ef07c387f
commit 51045ffb26
2 changed files with 51 additions and 0 deletions
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meta/recipes-devtools/gdb/gdb-8.2.inc
+1
View File
@@ -16,6 +16,7 @@ SRC_URI = "http://ftp.gnu.org/gnu/gdb/gdb-${PV}.tar.xz \
file://0010-resolve-restrict-keyword-conflict.patch \
file://0011-Fix-invalid-sigprocmask-call.patch \
file://gdbserver-ctrl-c-handling.patch \
file://0001-Fix-build-with-latest-GCC-9.0-tree.patch \
"
SRC_URI[md5sum] = "b5a49dbff00d9a87fbe114d14b3101c0"
SRC_URI[sha256sum] = "c3a441a29c7c89720b734e5a9c6289c0a06be7e0c76ef538f7bbcef389347c39"
meta/recipes-devtools/gdb/gdb/0001-Fix-build-with-latest-GCC-9.0-tree.patch
+50
View File
@@ -0,0 +1,50 @@
From 7406a50077773e78282a495cb32ef5b8179f6a33 Mon Sep 17 00:00:00 2001
From: Dimitar Dimitrov <dimitar@dinux.eu>
Date: Mon, 17 Dec 2018 21:30:52 +0200
Subject: [PATCH] Fix build with latest GCC 9.0 tree
A recent patch [1] to fix a GCC PR [2] actually broke the GDB build.
To fix, remove the stack pointer clobber. GCC will ignore the clobber
marker, and will not save or restore the stack pointer.
I ran "make check-gdb" on x86_64 to ensure there are no regressions.
gdb/ChangeLog:
2018-12-17 Dimitar Dimitrov <dimitar@dinux.eu>
* nat/linux-ptrace.c (linux_ptrace_test_ret_to_nx): Remove sp clobbers.
[1] https://gcc.gnu.org/ml/gcc-patches/2018-12/msg00532.html
[2] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52813
Upstream-Status: Backport
Signed-off-by: Dimitar Dimitrov <dimitar@dinux.eu>
---
gdb/ChangeLog | 5 +++++
gdb/nat/linux-ptrace.c | 4 ++--
2 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/gdb/nat/linux-ptrace.c b/gdb/nat/linux-ptrace.c
index d4c1b8f9fd..187cfeb9bc 100644
--- a/gdb/nat/linux-ptrace.c
+++ b/gdb/nat/linux-ptrace.c
@@ -161,14 +161,14 @@ linux_ptrace_test_ret_to_nx (void)
".globl linux_ptrace_test_ret_to_nx_instr;"
"linux_ptrace_test_ret_to_nx_instr:"
"ret"
- : : "r" (return_address) : "%esp", "memory");
+ : : "r" (return_address) : "memory");
#elif defined __x86_64__
asm volatile ("pushq %0;"
".globl linux_ptrace_test_ret_to_nx_instr;"
"linux_ptrace_test_ret_to_nx_instr:"
"ret"
: : "r" ((uint64_t) (uintptr_t) return_address)
- : "%rsp", "memory");
+ : "memory");
#else
# error "!__i386__ && !__x86_64__"
#endif
--
2.20.1