15e61520b4
- Add gdb-gcc9-fix-build-with-latest-GCC-9.0-tree.patch and gdb-gcc9-warning-on-elf32-arm.c-elf32_arm_final_link.patch in order to fix build with GCC9. OBS-URL: https://build.opensuse.org/request/show/704690 OBS-URL: https://build.opensuse.org/package/show/devel:gcc/gdb?expand=0&rev=203
51 lines
1.6 KiB
Diff
51 lines
1.6 KiB
Diff
From 7406a50077773e78282a495cb32ef5b8179f6a33 Mon Sep 17 00:00:00 2001
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From: Dimitar Dimitrov <dimitar@dinux.eu>
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Date: Mon, 17 Dec 2018 21:30:52 +0200
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Subject: [PATCH] Fix build with latest GCC 9.0 tree
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A recent patch [1] to fix a GCC PR [2] actually broke the GDB build.
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To fix, remove the stack pointer clobber. GCC will ignore the clobber
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marker, and will not save or restore the stack pointer.
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I ran "make check-gdb" on x86_64 to ensure there are no regressions.
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gdb/ChangeLog:
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2018-12-17 Dimitar Dimitrov <dimitar@dinux.eu>
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* nat/linux-ptrace.c (linux_ptrace_test_ret_to_nx): Remove sp clobbers.
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[1] https://gcc.gnu.org/ml/gcc-patches/2018-12/msg00532.html
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[2] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52813
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Signed-off-by: Dimitar Dimitrov <dimitar@dinux.eu>
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---
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gdb/ChangeLog | 5 +++++
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gdb/nat/linux-ptrace.c | 4 ++--
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2 files changed, 7 insertions(+), 2 deletions(-)
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diff --git a/gdb/nat/linux-ptrace.c b/gdb/nat/linux-ptrace.c
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index d4c1b8f9fd..187cfeb9bc 100644
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--- a/gdb/nat/linux-ptrace.c
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+++ b/gdb/nat/linux-ptrace.c
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@@ -161,14 +161,14 @@ linux_ptrace_test_ret_to_nx (void)
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".globl linux_ptrace_test_ret_to_nx_instr;"
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"linux_ptrace_test_ret_to_nx_instr:"
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"ret"
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- : : "r" (return_address) : "%esp", "memory");
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+ : : "r" (return_address) : "memory");
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#elif defined __x86_64__
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asm volatile ("pushq %0;"
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".globl linux_ptrace_test_ret_to_nx_instr;"
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"linux_ptrace_test_ret_to_nx_instr:"
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"ret"
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: : "r" ((uint64_t) (uintptr_t) return_address)
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- : "%rsp", "memory");
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+ : "memory");
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#else
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# error "!__i386__ && !__x86_64__"
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#endif
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--
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2.21.0
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