diff options
Diffstat (limited to 'libffi/src/powerpc/ffi.c')
| -rw-r--r-- | libffi/src/powerpc/ffi.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/libffi/src/powerpc/ffi.c b/libffi/src/powerpc/ffi.c index c8d188777c8..67d945bd826 100644 --- a/libffi/src/powerpc/ffi.c +++ b/libffi/src/powerpc/ffi.c @@ -573,10 +573,14 @@ ffi_status ffi_prep_cif_machdep(ffi_cif *cif) /* 'long long' arguments are passed as two words, but either both words must fit in registers or both go on the stack. If they go on the stack, they must - be 8-byte-aligned. */ + be 8-byte-aligned. + + Also, only certain register pairs can be used for + passing long long int -- specifically (r3,r4), (r5,r6), + (r7,r8), (r9,r10). + */ if (intarg_count == NUM_GPR_ARG_REGISTERS-1 - || (intarg_count >= NUM_GPR_ARG_REGISTERS - && intarg_count%2 != 0)) + || intarg_count%2 != 0) intarg_count++; intarg_count += 2; break; |