Mercurial > cgi-bin > hgwebdir.cgi > VMS > VMS_Implementations > SSR_impls > SSR__MC_shared_impl
annotate SSR.s @ 33:dd8f97945355
fix hash for 64 bit
| author | Nina Engelhardt |
|---|---|
| date | Tue, 27 Sep 2011 17:48:04 +0200 |
| parents | |
| children |
| rev | line source |
|---|---|
| Nina@26 | 1 |
| Nina@26 | 2 //Assembly code takes the return addr off the stack and saves |
| Nina@26 | 3 // into the singleton. The first field in the singleton is the |
| Nina@26 | 4 // "endInstrAddr" field, and the return addr is at 0x4(%ebp) |
| Nina@26 | 5 .globl asm_save_ret_to_singleton |
| Nina@26 | 6 asm_save_ret_to_singleton: |
| Nina@26 | 7 movq 0x8(%rbp), %rax #get ret address, ebp is the same as in the calling function |
| Nina@26 | 8 movq %rax, (%rdi) #write ret addr to endInstrAddr field |
| Nina@26 | 9 ret |
| Nina@26 | 10 |
| Nina@26 | 11 |
| Nina@26 | 12 //Assembly code changes the return addr on the stack to the one |
| Nina@26 | 13 // saved into the singleton by the end-singleton-fn |
| Nina@26 | 14 //The stack's return addr is at 0x4(%%ebp) |
| Nina@26 | 15 .globl asm_write_ret_from_singleton |
| Nina@26 | 16 asm_write_ret_from_singleton: |
| Nina@26 | 17 movq (%rdi), %rax #get endInstrAddr field |
| Nina@26 | 18 movq %rax, 0x8(%rbp) #write return addr to the stack of the caller |
| Nina@26 | 19 ret |
| Nina@26 | 20 |
| Nina@26 | 21 |