From 7b9b2d2152de336744304dd49d055041ff9de475 Mon Sep 17 00:00:00 2001 From: Seongbae Park Date: Thu, 28 Jun 2007 20:48:57 +0000 Subject: [PATCH] arm.c (arm_get_frame_offsets): Set offsets->locals_base to avoid negative stack size. gcc/ChangeLog: 2007-06-28 Seongbae Park * config/arm/arm.c (arm_get_frame_offsets): Set offsets->locals_base to avoid negative stack size. (thumb_expand_prologue): Assert on negative stack size. gcc/testsuite/ChangeLog: 2007-06-28 Seongbae Park * gcc.target/arm/stack-corruption.c: New test. From-SVN: r126095 --- 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 b20d2e8ccba0..42d7603b9b8a 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2007-06-28 Seongbae Park + + * config/arm/arm.c (arm_get_frame_offsets): Set + offsets->locals_base to avoid negative stack size. + (thumb_expand_prologue): Assert on negative stack size. + 2007-06-28 Jakub Jelinek * config/rs6000/rs6000.c (rs6000_function_ok_for_sibcall): Ensure diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index dc7aa77b6d6a..670e7912d293 100644 --- a/gcc/config/arm/arm.c +++ b/gcc/config/arm/arm.c @@ -10555,6 +10555,7 @@ arm_get_frame_offsets (void) if (leaf && frame_size == 0) { offsets->outgoing_args = offsets->soft_frame; + offsets->locals_base = offsets->soft_frame; return offsets; } @@ -13874,6 +13875,7 @@ thumb_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 ed943a03abd0..1c17e31e91c3 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,7 @@ +2007-06-28 Seongbae Park + + * gcc.target/arm/stack-corruption.c: New test. + 2007-06-27 Simon Martin PR c++/27492 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" } } */