From a3a531ecfec77a9b0f30e1bce0c529c543aae332 Mon Sep 17 00:00:00 2001 From: Seongbae Park Date: Tue, 19 Jun 2007 18:47:09 +0000 Subject: [PATCH] arm.c (arm_get_frame_offsets): Set offsets->locals_base to avoid negative stack size. gcc/ChangeLog: 2007-06-19 Seongbae Park * config/arm/arm.c (arm_get_frame_offsets): Set offsets->locals_base to avoid negative stack size. (thumb1_expand_prologue): Assert on negative stack size. gcc/testsuite/ChangeLog: 2007-06-19 Seongbae Park * gcc.target/arm/stack-corruption.c: New test. From-SVN: r125856 --- gcc/ChangeLog | 6 ++++++ gcc/config/arm/arm.c | 2 ++ gcc/testsuite/ChangeLog | 4 ++++ gcc/testsuite/gcc.target/arm/stack-corruption.c | 8 ++++++++ 4 files changed, 20 insertions(+) create mode 100644 gcc/testsuite/gcc.target/arm/stack-corruption.c diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 7fcbe6c51af2..8308ee683c7e 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2007-06-19 Seongbae Park + + * config/arm/arm.c (arm_get_frame_offsets): Set + offsets->locals_base to avoid negative stack size. + (thumb1_expand_prologue): Assert on negative stack size. + 2007-04-11 Sebastian Pop PR tree-optimization/32367 diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index e316f6a4ede0..7cd2cad6bf77 100644 --- a/gcc/config/arm/arm.c +++ b/gcc/config/arm/arm.c @@ -11101,6 +11101,7 @@ arm_get_frame_offsets (void) if (leaf && frame_size == 0) { offsets->outgoing_args = offsets->soft_frame; + offsets->locals_base = offsets->soft_frame; return offsets; } @@ -14662,6 +14663,7 @@ thumb1_expand_epilogue (void) amount = offsets->locals_base - offsets->saved_regs; } + gcc_assert (amount >= 0); if (amount) { if (amount < 512) diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index dd2a1a40e2b1..8afda7faf41b 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,7 @@ +2007-06-19 Seongbae Park + + * gcc.target/arm/stack-corruption.c: New test. + 2007-06-19 Richard Guenther * g++.dg/torture/pr30252.C: New testcase. diff --git a/gcc/testsuite/gcc.target/arm/stack-corruption.c b/gcc/testsuite/gcc.target/arm/stack-corruption.c new file mode 100644 index 000000000000..3a63950cc530 --- /dev/null +++ b/gcc/testsuite/gcc.target/arm/stack-corruption.c @@ -0,0 +1,8 @@ +/* { dg-do compile } */ +/* { dg-options "-O -mthumb -fno-omit-frame-pointer" } */ + +int main() { + return 0; +} + +/* { dg-final { scan-assembler-not "\tadd\tr7, sp, #8\n" } } */ -- 2.47.2