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| author | Andreas Krebbel <krebbel@gcc.gnu.org> | 2008-11-12 18:04:39 +0000 |
|---|---|---|
| committer | Andreas Krebbel <krebbel@gcc.gnu.org> | 2008-11-12 18:04:39 +0000 |
| commit | 78791a80a8bfde263eb3cb2c786efa5b6f973142 (patch) | |
| tree | 03ae6dc0ab366f088eab600a3c8ad3a6b68c7181 /gcc/config/s390 | |
| parent | 2069a97a4a6bab22048158add3db32d6b38f0021 (diff) | |
| download | gcc-78791a80a8bfde263eb3cb2c786efa5b6f973142.zip gcc-78791a80a8bfde263eb3cb2c786efa5b6f973142.tar.gz gcc-78791a80a8bfde263eb3cb2c786efa5b6f973142.tar.bz2 | |
[multiple changes]
2008-11-12 Ulrich Weigand <Ulrich.Weigand@de.ibm.com>
* gcc/config/s390/s390.h (INITIAL_FRAME_ADDRESS_RTX): Remove
packed-stack special handling.
(FRAME_ADDR_RTX): Add definition.
2008-11-12 Andreas Krebbel <krebbel1@de.ibm.com>
* gcc.target/s390/frame-addr1.c: New testcase.
* gcc.target/s390/frame-addr2.c: New testcase.
* gcc.target/s390/return-addr1.c: New testcase.
* gcc.target/s390/return-addr2.c: New testcase.
From-SVN: r141796
Diffstat (limited to 'gcc/config/s390')
| -rw-r--r-- | gcc/config/s390/s390.h | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/gcc/config/s390/s390.h b/gcc/config/s390/s390.h index a58bc34..449c1b6 100644 --- a/gcc/config/s390/s390.h +++ b/gcc/config/s390/s390.h @@ -574,9 +574,7 @@ extern const enum reg_class regclass_map[FIRST_PSEUDO_REGISTER]; /* Defining this macro makes __builtin_frame_address(0) and __builtin_return_address(0) work with -fomit-frame-pointer. */ #define INITIAL_FRAME_ADDRESS_RTX \ - (TARGET_PACKED_STACK ? \ - plus_constant (arg_pointer_rtx, -UNITS_PER_WORD) : \ - plus_constant (arg_pointer_rtx, -STACK_POINTER_OFFSET)) + (plus_constant (arg_pointer_rtx, -STACK_POINTER_OFFSET)) /* The return address of the current frame is retrieved from the initial value of register RETURN_REGNUM. @@ -586,6 +584,16 @@ extern const enum reg_class regclass_map[FIRST_PSEUDO_REGISTER]; (TARGET_PACKED_STACK ? \ plus_constant ((FRAME), STACK_POINTER_OFFSET - UNITS_PER_WORD) : (FRAME)) +/* For -mpacked-stack this adds 160 - 8 (96 - 4) to the output of + builtin_frame_address. Otherwise arg pointer - + STACK_POINTER_OFFSET would be returned for + __builtin_frame_address(0) what might result in an address pointing + somewhere into the middle of the local variables since the packed + stack layout generally does not need all the bytes in the register + save area. */ +#define FRAME_ADDR_RTX(FRAME) \ + DYNAMIC_CHAIN_ADDRESS ((FRAME)) + #define RETURN_ADDR_RTX(COUNT, FRAME) \ s390_return_addr_rtx ((COUNT), DYNAMIC_CHAIN_ADDRESS ((FRAME))) |