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arm.c (output_func_epilogue): Check TARGET_ABORT_NORETURN before generating a call to abort for volatile... 

* config/arm.c (output_func_epilogue):  Check TARGET_ABORT_NORETURN
        before generating a call to abort for volatile functions.
        * config/arm.h (ARM_FLAG_ABORT_NORETURN):  Define.
        (TARGET_ABORT_NORETURN):  Define.
        (abort-on-noreturn):  New option.

From-SVN: r24653
This commit is contained in:
Catherine Moore 1999-01-13 14:32:39 +00:00 committed by Catherine Moore
parent 31ee9d6c10
commit c11145f699
3 changed files with 18 additions and 1 deletions
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8
gcc/ChangeLog
View File

@ -1,3 +1,11 @@
Wed Jan 13 16:16:44 1999 Catherine Moore <clm@cygnus.com>
* config/arm.c (output_func_epilogue): Check TARGET_ABORT_NORETURN
before generating a call to abort for volatile functions.
* config/arm.h (ARM_FLAG_ABORT_NORETURN): Define.
(TARGET_ABORT_NORETURN): Define.
(abort-on-noreturn): New option.
Wed Jan 13 13:30:08 1999 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
* cccp.c (xstrdup): Renamed from `savestring'. All callers changed.

2
gcc/config/arm/arm.c
View File

@ -5006,7 +5006,7 @@ output_func_epilogue (f, frame_size)
goto epilogue_done;
/* A volatile function should never return. Call abort. */
if (volatile_func)
if (TARGET_ABORT_NORETURN && volatile_func)
{
rtx op = gen_rtx (SYMBOL_REF, Pmode, "abort");
assemble_external_libcall (op);

9
gcc/config/arm/arm.h
View File

@ -312,6 +312,10 @@ extern char *target_fp_name;
big-endian (for backwards compatibility with older versions of GCC). */
#define ARM_FLAG_LITTLE_WORDS (0x2000)
/* Nonzero if a call to abort should be generated if a noreturn
function tries to return. */
#define ARM_FLAG_ABORT_NORETURN (0x8000)
#define TARGET_APCS (target_flags & ARM_FLAG_APCS_FRAME)
#define TARGET_POKE_FUNCTION_NAME (target_flags & ARM_FLAG_POKE)
#define TARGET_FPE (target_flags & ARM_FLAG_FPE)
@ -327,6 +331,7 @@ extern char *target_fp_name;
#define TARGET_BIG_END (target_flags & ARM_FLAG_BIG_END)
#define TARGET_THUMB_INTERWORK (target_flags & ARM_FLAG_THUMB)
#define TARGET_LITTLE_WORDS (target_flags & ARM_FLAG_LITTLE_WORDS)
#define TARGET_ABORT_NORETURN (target_flags & ARM_FLAG_ABORT_NORETURN)
/* SUBTARGET_SWITCHES is used to add flags on a per-config basis.
Bit 31 is reserved. See riscix.h. */
@ -377,6 +382,10 @@ extern char *target_fp_name;
{"thumb-interwork", ARM_FLAG_THUMB, \
"Support calls between THUMB and ARM instructions sets" }, \
{"no-thumb-interwork", -ARM_FLAG_THUMB, "" }, \
{"abort-on-noreturn", ARM_FLAG_ABORT_NORETURN, \
"Generate a call to abort if a noreturn function returns"}, \
{"no-abort-on-noreturn", -ARM_FLAG_ABORT_NORETURN, ""}, \
SUBTARGET_SWITCHES \
{"", TARGET_DEFAULT } \
}