| /* |
| * Trampoline to trace irqs off. (otherwise CALLER_ADDR1 might crash) |
| * Copyright 2008 by Steven Rostedt, Red Hat, Inc |
| * (inspired by Andi Kleen's thunk_64.S) |
| * Subject to the GNU public license, v.2. No warranty of any kind. |
| */ |
| |
| #include <linux/linkage.h> |
| |
| #define ARCH_TRACE_IRQS_ON \ |
| pushl %eax; \ |
| pushl %ecx; \ |
| pushl %edx; \ |
| call trace_hardirqs_on; \ |
| popl %edx; \ |
| popl %ecx; \ |
| popl %eax; |
| |
| #define ARCH_TRACE_IRQS_OFF \ |
| pushl %eax; \ |
| pushl %ecx; \ |
| pushl %edx; \ |
| call trace_hardirqs_off; \ |
| popl %edx; \ |
| popl %ecx; \ |
| popl %eax; |
| |
| #ifdef CONFIG_TRACE_IRQFLAGS |
| /* put return address in eax (arg1) */ |
| .macro thunk_ra name,func |
| .globl \name |
| \name: |
| pushl %eax |
| pushl %ecx |
| pushl %edx |
| /* Place EIP in the arg1 */ |
| movl 3*4(%esp), %eax |
| call \func |
| popl %edx |
| popl %ecx |
| popl %eax |
| ret |
| .endm |
| |
| thunk_ra trace_hardirqs_on_thunk,trace_hardirqs_on_caller |
| thunk_ra trace_hardirqs_off_thunk,trace_hardirqs_off_caller |
| #endif |
