diff options
Diffstat (limited to 'contrib/gcc/config/rs6000/sysv4.h')
| -rw-r--r-- | contrib/gcc/config/rs6000/sysv4.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/contrib/gcc/config/rs6000/sysv4.h b/contrib/gcc/config/rs6000/sysv4.h index 9274d8fda690..635e926f8c83 100644 --- a/contrib/gcc/config/rs6000/sysv4.h +++ b/contrib/gcc/config/rs6000/sysv4.h @@ -770,6 +770,38 @@ do { \ ASM_OUTPUT_ALIGNED_LOCAL (FILE, NAME, SIZE, ALIGN); \ } while (0) +/* This is how to output code to push a register on the stack. + It need not be very fast code. + + On the rs6000, we must keep the backchain up to date. In order + to simplify things, always allocate 16 bytes for a push (System V + wants to keep stack aligned to a 16 byte boundary). */ + +#define ASM_OUTPUT_REG_PUSH(FILE, REGNO) \ +do { \ + if (DEFAULT_ABI == ABI_V4) \ + asm_fprintf (FILE, \ + (TARGET_32BIT \ + ? "\t{stu|stwu} %s,-16(%s)\n\t{st|stw} %s,12(%s)\n" \ + : "\tstdu %s,-32(%s)\n\tstd %s,24(%s)\n"), \ + reg_names[1], reg_names[1], reg_names[REGNO], \ + reg_names[1]); \ +} while (0) + +/* This is how to output an insn to pop a register from the stack. + It need not be very fast code. */ + +#define ASM_OUTPUT_REG_POP(FILE, REGNO) \ +do { \ + if (DEFAULT_ABI == ABI_V4) \ + asm_fprintf (FILE, \ + (TARGET_32BIT \ + ? "\t{l|lwz} %s,12(%s)\n\t{ai|addic} %s,%s,16\n" \ + : "\tld %s,24(%s)\n\t{ai|addic} %s,%s,32\n"), \ + reg_names[REGNO], reg_names[1], reg_names[1], \ + reg_names[1]); \ +} while (0) + /* Switch Recognition by gcc.c. Add -G xx support. */ /* Override svr4.h definition. */ |