53 lines
1.9 KiB
Diff
53 lines
1.9 KiB
Diff
From 7aa93d6d9a63c7bedf1e033f6d040e95038537e7 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 08/33] Disable ssp on -nostdlib, -nodefaultlibs and
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-ffreestanding Change the buffer size.
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---
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gcc/gcc.cc | 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.cc b/gcc/gcc.cc
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index da6417dd0d1..b5a6f200635 100644
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--- a/gcc/gcc.cc
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+++ b/gcc/gcc.cc
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@@ -983,6 +983,12 @@ 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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@@ -1282,7 +1288,7 @@ 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 823cdb2ff85..5b096899b40 100644
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--- a/gcc/params.opt
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+++ b/gcc/params.opt
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@@ -1006,7 +1006,7 @@ 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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2.40.1
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