53 lines
1.9 KiB
Diff
53 lines
1.9 KiB
Diff
From 7a4086e83e3abbf2c20b7211e2a2c0bf00f25ff8 Mon Sep 17 00:00:00 2001
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From: Ariadne Conill <ariadne@dereferenced.org>
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Date: Fri, 21 Aug 2020 06:49:40 +0000
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Subject: [PATCH] Disable ssp on -nostdlib, -nodefaultlibs and -ffreestanding
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Change the buffer size.
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---
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gcc/gcc.c | 8 +++++++-
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gcc/params.opt | 2 +-
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2 files changed, 8 insertions(+), 2 deletions(-)
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diff --git a/gcc/gcc.c b/gcc/gcc.c
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index 1ad5da6d769..99314032ec2 100644
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--- a/gcc/gcc.c
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+++ b/gcc/gcc.c
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@@ -989,6 +989,12 @@ proper position among the other output files. */
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#define LINK_GCC_C_SEQUENCE_SPEC "%G %{!nolibc:%L %G}"
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#endif
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+#ifdef ENABLE_DEFAULT_SSP
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+#define NO_SSP_SPEC "%{nostdlib|nodefaultlibs|ffreestanding:-fno-stack-protector} "
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+#else
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+#define NO_SSP_SPEC ""
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+#endif
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+
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#ifndef LINK_SSP_SPEC
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#ifdef TARGET_LIBC_PROVIDES_SSP
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#define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
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@@ -1288,7 +1294,7 @@ static const char *cc1_options =
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%{-version:--version}\
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%{-help=*:--help=%*}\
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%{!fsyntax-only:%{S:%W{o*}%{!o*:-o %w%b.s}}}\
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- %{fsyntax-only:-o %j} %{-param*}\
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+ %{fsyntax-only:-o %j} %{-param*} " NO_SSP_SPEC "\
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%{coverage:-fprofile-arcs -ftest-coverage}\
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%{fprofile-arcs|fprofile-generate*|coverage:\
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%{!fprofile-update=single:\
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diff --git a/gcc/params.opt b/gcc/params.opt
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index 8ba281b4cfa..bab39cdf8a2 100644
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--- a/gcc/params.opt
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+++ b/gcc/params.opt
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@@ -946,7 +946,7 @@ Common Joined UInteger Var(param_ssa_name_def_chain_limit) Init(512) Param Optim
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The maximum number of SSA_NAME assignments to follow in determining a value.
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-param=ssp-buffer-size=
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-Common Joined UInteger Var(param_ssp_buffer_size) Init(8) IntegerRange(1, 65536) Param Optimization
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+Common Joined UInteger Var(param_ssp_buffer_size) Init(4) IntegerRange(1, 65536) Param Optimization
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The lower bound for a buffer to be considered for stack smashing protection.
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-param=stack-clash-protection-guard-size=
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--
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2.34.1
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