diff options
Diffstat (limited to 'runtime/regs.c')
| -rw-r--r-- | runtime/regs.c | 79 |
1 files changed, 77 insertions, 2 deletions
diff --git a/runtime/regs.c b/runtime/regs.c index bc717695..5e08e376 100644 --- a/runtime/regs.c +++ b/runtime/regs.c @@ -33,7 +33,13 @@ unsigned long _stp_ret_addr (struct pt_regs *regs) { -#ifdef __x86_64__ +#if defined (STAPCONF_X86_UNIREGS) && (defined (__x86_64__) || defined (__i386__)) + unsigned long *ra = (unsigned long *)regs->sp; + if (ra) + return *ra; + else + return 0; +#elif defined (__x86_64__) unsigned long *ra = (unsigned long *)regs->rsp; if (ra) return *ra; @@ -77,7 +83,76 @@ unsigned long _stp_ret_addr (struct pt_regs *regs) */ #define _stp_probe_addr_r(ri) (ri->rp->kp.addr) -#ifdef __x86_64__ +#if defined (STAPCONF_X86_UNIREGS) && defined (__x86_64__) + +void _stp_print_regs(struct pt_regs * regs) +{ + unsigned long cr0 = 0L, cr2 = 0L, cr3 = 0L, cr4 = 0L, fs, gs, shadowgs; + unsigned int fsindex,gsindex; + unsigned int ds,cs,es; + + _stp_printf("RIP: %016lx\nRSP: %016lx EFLAGS: %08lx\n", regs->ip, regs->sp, regs->flags); + _stp_printf("RAX: %016lx RBX: %016lx RCX: %016lx\n", + regs->ax, regs->bx, regs->cx); + _stp_printf("RDX: %016lx RSI: %016lx RDI: %016lx\n", + regs->dx, regs->si, regs->di); + _stp_printf("RBP: %016lx R08: %016lx R09: %016lx\n", + regs->bp, regs->r8, regs->r9); + _stp_printf("R10: %016lx R11: %016lx R12: %016lx\n", + regs->r10, regs->r11, regs->r12); + _stp_printf("R13: %016lx R14: %016lx R15: %016lx\n", + regs->r13, regs->r14, regs->r15); + + asm("movl %%ds,%0" : "=r" (ds)); + asm("movl %%cs,%0" : "=r" (cs)); + asm("movl %%es,%0" : "=r" (es)); + asm("movl %%fs,%0" : "=r" (fsindex)); + asm("movl %%gs,%0" : "=r" (gsindex)); + + rdmsrl(MSR_FS_BASE, fs); + rdmsrl(MSR_GS_BASE, gs); + rdmsrl(MSR_KERNEL_GS_BASE, shadowgs); + + asm("movq %%cr0, %0": "=r" (cr0)); + asm("movq %%cr2, %0": "=r" (cr2)); + asm("movq %%cr3, %0": "=r" (cr3)); + asm("movq %%cr4, %0": "=r" (cr4)); + + _stp_printf("FS: %016lx(%04x) GS:%016lx(%04x) knlGS:%016lx\n", + fs,fsindex,gs,gsindex,shadowgs); + _stp_printf("CS: %04x DS: %04x ES: %04x CR0: %016lx\n", cs, ds, es, cr0); + _stp_printf("CR2: %016lx CR3: %016lx CR4: %016lx\n", cr2, cr3, cr4); +} + + #elif defined (STAPCONF_X86_UNIREGS) && defined (__i386__) + +void _stp_print_regs(struct pt_regs * regs) +{ + unsigned long cr0 = 0L, cr2 = 0L, cr3 = 0L, cr4 = 0L; + + _stp_printf ("EIP: %08lx\n",regs->ip); + _stp_printf ("ESP: %08lx\n",regs->sp); + _stp_printf ("EAX: %08lx EBX: %08lx ECX: %08lx EDX: %08lx\n", + regs->ax,regs->bx,regs->cx,regs->dx); + _stp_printf ("ESI: %08lx EDI: %08lx EBP: %08lx", + regs->si, regs->di, regs->bp); + _stp_printf (" DS: %04x ES: %04x\n", + 0xffff & regs->ds,0xffff & regs->es); + + __asm__("movl %%cr0, %0": "=r" (cr0)); + __asm__("movl %%cr2, %0": "=r" (cr2)); + __asm__("movl %%cr3, %0": "=r" (cr3)); + /* This could fault if %cr4 does not exist */ + __asm__("1: movl %%cr4, %0 \n" + "2: \n" + ".section __ex_table,\"a\" \n" + ".long 1b,2b \n" + ".previous \n" + : "=r" (cr4): "0" (0)); + _stp_printf ("CR0: %08lx CR2: %08lx CR3: %08lx CR4: %08lx\n", cr0, cr2, cr3, cr4); +} + +#elif defined (__x86_64__) void _stp_print_regs(struct pt_regs * regs) { unsigned long cr0 = 0L, cr2 = 0L, cr3 = 0L, cr4 = 0L, fs, gs, shadowgs; |