| /* iX386_64.s -- assembly support. */ |
| |
| /* |
| // QuickThreads -- Threads-building toolkit. |
| // Copyright (c) 1993 by David Keppel |
| // |
| // Permission to use, copy, modify and distribute this software and |
| // its documentation for any purpose and without fee is hereby |
| // granted, provided that the above copyright notice and this notice |
| // appear in all copies. This software is provided as a |
| // proof-of-concept and for demonstration purposes; there is no |
| // representation about the suitability of this software for any |
| // purpose. */ |
| |
| /* 64-bit Intel Architecture Support |
| // written by Andy Goodrich, Forte Design Systms, Inc. */ |
| |
| /* NOTE: double-labeled `_name' and `name' for System V compatability. */ |
| /* NOTE: Mixed C/C++-style comments used. Sorry! */ |
| |
| .text |
| .align 2 |
| |
| .globl _qt_abort |
| .globl qt_abort |
| .globl _qt_block |
| .globl qt_block |
| .globl _qt_blocki |
| .globl qt_blocki |
| .globl _qt_align |
| .globl qt_align |
| |
| _qt_abort: |
| qt_abort: |
| _qt_block: |
| qt_block: |
| _qt_blocki: |
| qt_blocki: |
| /* 11 (return address.) */ |
| pushq %rbp /* 10 (push stack frame top.) */ |
| movq %rsp, %rbp /* set new stack frame top. */ |
| /* save registers. */ |
| subq $8, %rsp /* 9 (Stack alignment) */ |
| pushq %r12 /* 8 ... */ |
| pushq %r13 /* 7 ... */ |
| pushq %r14 /* 6 ... */ |
| pushq %r15 /* 5 ... */ |
| pushq %rbx /* 4 ... */ |
| pushq %rcx /* 3 ... (new stack address) */ |
| pushq %rdx /* 2 ... (arg) */ |
| pushq %rdi /* 1 ... (address of save function.) */ |
| pushq %rsi /* 0 ... (cor) */ |
| |
| movq %rdi, %rax /* get address of save function. */ |
| movq %rsp, %rdi /* set current stack as save argument. */ |
| movq %rcx, %rsp /* swap stacks. */ |
| movq %rcx, %rbp /* adjust stack frame pointer. */ |
| addq $10*8, %rbp /* ... */ |
| call *%rax /* call function to save stack pointer. */ |
| |
| /* restore registers. */ |
| popq %rsi /* ... */ |
| popq %rdi /* ... */ |
| popq %rdx /* ... */ |
| popq %rcx /* ... */ |
| popq %rbx /* ... */ |
| popq %r15 /* restore registers from new stack. */ |
| popq %r14 /* ... */ |
| popq %r13 /* ... */ |
| popq %r12 /* ... */ |
| leave /* unwind stack. */ |
| _qt_align: |
| qt_align: |
| ret /* return. */ |
