| 42,7 → 42,7 |
|---|
| |
| movl 4(%esp),%eax # the caller's return %eip |
| movl 8(%esp),%ebx # address of the kernel_context variable to save context to |
| movl %eax,4(%ebx) # %eip -> ctx->pc |
| movl %eax,4(%ebx) # %eip -> ctx->pc |
| movl %esp,(%ebx) # %esp -> ctx->sp |
| |
| movl %ebx,%eax |
| 53,8 → 53,8 |
|---|
| movl %edx,16(%eax) |
| movl %esi,20(%eax) |
| movl %edi,24(%eax) |
| movl %ebp,28(%eax) |
| |
| movl %ebp,28(%eax) |
| |
| xorl %eax,%eax # context_save returns 1 |
| incl %eax |
| ret |
| 64,7 → 64,7 |
|---|
| # |
| # Restore CPU context from the kernel_context variable |
| # pointed by the 1st argument. Returns 0 in EAX. |
| # |
| # |
| context_restore: |
| movl 4(%esp),%eax # address of the kernel_context variable to restore context from |
| movl (%eax),%esp # ctx->sp -> %esp |
| 79,5 → 79,5 |
|---|
| |
| movl 4(%eax),%eax |
| movl %eax,(%esp) # ctx->pc -> saver's return %eip |
| xorl %eax,%eax # context_restore returns 0 |
| xorl %eax,%eax # context_restore returns 0 |
| ret |