diff options
Diffstat (limited to 'sys/arm/include')
| -rw-r--r-- | sys/arm/include/asm.h | 28 |
1 files changed, 14 insertions, 14 deletions
diff --git a/sys/arm/include/asm.h b/sys/arm/include/asm.h index 231d559..e5f06e7 100644 --- a/sys/arm/include/asm.h +++ b/sys/arm/include/asm.h @@ -64,6 +64,18 @@ #endif /* + * EENTRY()/EEND() mark "extra" entry/exit points from a function. + * The unwind info cannot handle the concept of a nested function, or a function + * with multiple .fnstart directives, but some of our assembler code is written + * with multiple labels to allow entry at several points. The EENTRY() macro + * defines such an extra entry point without a new .fnstart, so that it's + * basically just a label that you can jump to. The EEND() macro does nothing + * at all, except document the exit point associated with the same-named entry. + */ +#define _EENTRY(x) .globl x; .type x,_ASM_TYPE_FUNCTION; x: +#define _EEND(x) /* nothing */ + +/* * gas/arm uses @ as a single comment character and thus cannot be used here * Instead it recognised the # instead of an @ symbols in .type directives * We define a couple of macros so that assembly code will not be dependent @@ -72,22 +84,10 @@ #define _ASM_TYPE_FUNCTION #function #define _ASM_TYPE_OBJECT #object #define GLOBAL(X) .globl x -#define _ENTRY(x) \ - .text; _ALIGN_TEXT; .globl x; .type x,_ASM_TYPE_FUNCTION; x: _FNSTART +#define _ENTRY(x) \ + .text; _ALIGN_TEXT; _EENTRY(x) _FNSTART #define _END(x) .size x, . - x; _FNEND -/* - * EENTRY()/EEND() mark "extra" entry/exit points from a function. - * The unwind info cannot handle the concept of a nested function, or a function - * with multiple .fnstart directives, but some of our assembler code is written - * with multiple labels to allow entry at several points. The EENTRY() macro - * defines such an extra entry point without a new .fnstart, so that it's - * basically just a label that you can jump to. The EEND() macro does nothing - * at all, except document the exit point associated with the same-named entry. - */ -#define _EENTRY(x) .globl x; .type x,_ASM_TYPE_FUNCTION; x: -#define _EEND(x) /* nothing */ - #ifdef GPROF # define _PROF_PROLOGUE \ mov ip, lr; bl __mcount |
