Glauber de Oliveira Costa | 2f485ef | 2008-01-30 13:32:10 +0100 | [diff] [blame] | 1 | #include <asm/paravirt.h> |
| 2 | |
| 3 | DEF_NATIVE(pv_irq_ops, irq_disable, "cli"); |
| 4 | DEF_NATIVE(pv_irq_ops, irq_enable, "sti"); |
| 5 | DEF_NATIVE(pv_irq_ops, restore_fl, "push %eax; popf"); |
| 6 | DEF_NATIVE(pv_irq_ops, save_fl, "pushf; pop %eax"); |
| 7 | DEF_NATIVE(pv_cpu_ops, iret, "iret"); |
Jeremy Fitzhardinge | d75cd22 | 2008-06-25 00:19:26 -0400 | [diff] [blame] | 8 | DEF_NATIVE(pv_cpu_ops, irq_enable_sysexit, "sti; sysexit"); |
Glauber de Oliveira Costa | 2f485ef | 2008-01-30 13:32:10 +0100 | [diff] [blame] | 9 | DEF_NATIVE(pv_mmu_ops, read_cr2, "mov %cr2, %eax"); |
| 10 | DEF_NATIVE(pv_mmu_ops, write_cr3, "mov %eax, %cr3"); |
| 11 | DEF_NATIVE(pv_mmu_ops, read_cr3, "mov %cr3, %eax"); |
| 12 | DEF_NATIVE(pv_cpu_ops, clts, "clts"); |
| 13 | DEF_NATIVE(pv_cpu_ops, read_tsc, "rdtsc"); |
| 14 | |
Jeremy Fitzhardinge | 41edafd | 2009-01-28 14:35:02 -0800 | [diff] [blame] | 15 | unsigned paravirt_patch_ident_32(void *insnbuf, unsigned len) |
| 16 | { |
| 17 | /* arg in %eax, return in %eax */ |
| 18 | return 0; |
| 19 | } |
| 20 | |
| 21 | unsigned paravirt_patch_ident_64(void *insnbuf, unsigned len) |
| 22 | { |
| 23 | /* arg in %edx:%eax, return in %edx:%eax */ |
| 24 | return 0; |
| 25 | } |
| 26 | |
Glauber de Oliveira Costa | 2f485ef | 2008-01-30 13:32:10 +0100 | [diff] [blame] | 27 | unsigned native_patch(u8 type, u16 clobbers, void *ibuf, |
| 28 | unsigned long addr, unsigned len) |
| 29 | { |
| 30 | const unsigned char *start, *end; |
| 31 | unsigned ret; |
| 32 | |
| 33 | #define PATCH_SITE(ops, x) \ |
| 34 | case PARAVIRT_PATCH(ops.x): \ |
| 35 | start = start_##ops##_##x; \ |
| 36 | end = end_##ops##_##x; \ |
| 37 | goto patch_site |
Paolo Ciarrocchi | d9336a9 | 2008-08-02 21:25:43 +0200 | [diff] [blame] | 38 | switch (type) { |
Glauber de Oliveira Costa | 2f485ef | 2008-01-30 13:32:10 +0100 | [diff] [blame] | 39 | PATCH_SITE(pv_irq_ops, irq_disable); |
| 40 | PATCH_SITE(pv_irq_ops, irq_enable); |
| 41 | PATCH_SITE(pv_irq_ops, restore_fl); |
| 42 | PATCH_SITE(pv_irq_ops, save_fl); |
| 43 | PATCH_SITE(pv_cpu_ops, iret); |
Jeremy Fitzhardinge | d75cd22 | 2008-06-25 00:19:26 -0400 | [diff] [blame] | 44 | PATCH_SITE(pv_cpu_ops, irq_enable_sysexit); |
Glauber de Oliveira Costa | 2f485ef | 2008-01-30 13:32:10 +0100 | [diff] [blame] | 45 | PATCH_SITE(pv_mmu_ops, read_cr2); |
| 46 | PATCH_SITE(pv_mmu_ops, read_cr3); |
| 47 | PATCH_SITE(pv_mmu_ops, write_cr3); |
| 48 | PATCH_SITE(pv_cpu_ops, clts); |
| 49 | PATCH_SITE(pv_cpu_ops, read_tsc); |
| 50 | |
| 51 | patch_site: |
| 52 | ret = paravirt_patch_insns(ibuf, len, start, end); |
| 53 | break; |
| 54 | |
| 55 | default: |
| 56 | ret = paravirt_patch_default(type, clobbers, ibuf, addr, len); |
| 57 | break; |
| 58 | } |
| 59 | #undef PATCH_SITE |
| 60 | return ret; |
| 61 | } |