VMS/VMS_Implementations/SSR_impls/SSR__MC_shared_impl

view SSR_asm.s @ 76:6647aea90477

commented out uses of SemEnv->lastReqType .. wasn't compiling..
author Sean Halle <seanhalle@yahoo.com>
date Sun, 15 Jul 2012 02:03:43 -0700
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2 //Assembly code takes the return addr off the stack and saves
3 // into the singleton. The first field in the singleton is the
4 // "endInstrAddr" field, and the return addr is at 0x4(%ebp)
5 .globl asm_save_ret_to_singleton
6 asm_save_ret_to_singleton:
7 movq 0x8(%rbp), %rax #get ret address, ebp is the same as in the calling function
8 movq %rax, (%rdi) #write ret addr to endInstrAddr field
9 ret
12 //Assembly code changes the return addr on the stack to the one
13 // saved into the singleton by the end-singleton-fn
14 //The stack's return addr is at 0x4(%%ebp)
15 .globl asm_write_ret_from_singleton
16 asm_write_ret_from_singleton:
17 movq (%rdi), %rax #get endInstrAddr field
18 movq %rax, 0x8(%rbp) #write return addr to the stack of the caller
19 ret