diff options
Diffstat (limited to 'gcc/config/arm/lib1funcs.asm')
| -rw-r--r-- | gcc/config/arm/lib1funcs.asm | 28 |
1 files changed, 21 insertions, 7 deletions
diff --git a/gcc/config/arm/lib1funcs.asm b/gcc/config/arm/lib1funcs.asm index b8df889d600..4e3c8a3317d 100644 --- a/gcc/config/arm/lib1funcs.asm +++ b/gcc/config/arm/lib1funcs.asm @@ -94,10 +94,20 @@ Boston, MA 02111-1307, USA. */ # define RET bx lr # define RETc(x) bx##x lr -# if (__ARM_ARCH__ == 4) \ - && (defined(__thumb__) || defined(__THUMB_INTERWORK__)) -# define __INTERWORKING__ -# endif +/* Special precautions for interworking on armv4t. */ +# if (__ARM_ARCH__ == 4) + +/* Always use bx, not ldr pc. */ +# if (defined(__thumb__) || defined(__THUMB_INTERWORK__)) +# define __INTERWORKING__ +# endif /* __THUMB__ || __THUMB_INTERWORK__ */ + +/* Include thumb stub before arm mode code. */ +# if defined(__thumb__) && !defined(__THUMB_INTERWORK__) +# define __INTERWORKING_STUBS__ +# endif /* __thumb__ && !__THUMB_INTERWORK__ */ + +#endif /* __ARM_ARCH == 4 */ #else @@ -192,7 +202,7 @@ SYM (__\name): /* Special function that will always be coded in ARM assembly, even if in Thumb-only compilation. */ -#if defined(__thumb__) && !defined(__THUMB_INTERWORK__) +#if defined(__INTERWORKING_STUBS__) .macro ARM_FUNC_START name FUNC_START \name bx pc @@ -225,13 +235,17 @@ SYM (__\name): .macro FUNC_ALIAS new old .globl SYM (__\new) - EQUIV SYM (__\new), SYM (__\old) +#if defined (__thumb__) + .thumb_set SYM (__\new), SYM (__\old) +#else + .set SYM (__\new), SYM (__\old) +#endif .endm .macro ARM_FUNC_ALIAS new old .globl SYM (__\new) EQUIV SYM (__\new), SYM (__\old) -#ifdef __thumb__ +#if defined(__INTERWORKING_STUBS__) .set SYM (_L__\new), SYM (_L__\old) #endif .endm |