summaryrefslogtreecommitdiffstats
path: root/runtime/current.c
diff options
context:
space:
mode:
Diffstat (limited to 'runtime/current.c')
-rw-r--r--runtime/current.c257
1 files changed, 0 insertions, 257 deletions
diff --git a/runtime/current.c b/runtime/current.c
deleted file mode 100644
index 809f253b..00000000
--- a/runtime/current.c
+++ /dev/null
@@ -1,257 +0,0 @@
-/* -*- linux-c -*-
- * Functions to access the members of pt_regs struct
- * Copyright (C) 2005 Red Hat Inc.
- * Copyright (C) 2005 Intel Corporation.
- *
- * This file is part of systemtap, and is free software. You can
- * redistribute it and/or modify it under the terms of the GNU General
- * Public License (GPL); either version 2, or (at your option) any
- * later version.
- */
-
-#ifndef _CURRENT_C_ /* -*- linux-c -*- */
-#define _CURRENT_C_
-
-#include "regs.h"
-
-/** @file current.c
- * @brief Functions to get the current state.
- */
-/** @addtogroup current Current State
- * Functions to get the current state.
- * @{
- */
-
-
-/** Get the current return address.
- * Call from kprobes (not jprobes).
- * @param regs The pt_regs saved by the kprobe.
- * @return The return address saved in the stack pointer.
- * @note i386 and x86_64 only so far.
- */
-
-unsigned long _stp_ret_addr (struct pt_regs *regs)
-{
-#ifdef __x86_64__
- unsigned long *ra = (unsigned long *)regs->rsp;
- if (ra)
- return *ra;
- else
- return 0;
-#elif defined (__i386__)
- return regs->esp;
-#elif defined (__powerpc64__)
- return REG_LINK(regs);
-#elif defined (__ia64__)
- return regs->b0;
-#elif defined (__s390__) || defined (__s390x__)
- return regs->gprs[14];
-#else
- #error Unimplemented architecture
-#endif
-}
-
-/** Get the current return address for a return probe.
- * Call from kprobe return probe.
- * @param ri Pointer to the struct kretprobe_instance.
- * @return The return address
- */
-#define _stp_ret_addr_r(ri) (ri->ret_addr)
-
-/** Get the probe address for a kprobe.
- * Call from a kprobe. This will return the
- * address of the function that is being probed.
- * @param kp Pointer to the struct kprobe.
- * @return The function's address
- */
-#define _stp_probe_addr(kp) (kp->addr)
-
-/** Get the probe address for a return probe.
- * Call from kprobe return probe. This will return the
- * address of the function that is being probed.
- * @param ri Pointer to the struct kretprobe_instance.
- * @return The function's address
- */
-#define _stp_probe_addr_r(ri) (ri->rp->kp.addr)
-
-#ifdef __x86_64__
-void _stp_sprint_regs(String str, 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_sprintf(str,"RIP: %016lx\nRSP: %016lx EFLAGS: %08lx\n", regs->rip, regs->rsp, regs->eflags);
- _stp_sprintf(str,"RAX: %016lx RBX: %016lx RCX: %016lx\n",
- regs->rax, regs->rbx, regs->rcx);
- _stp_sprintf(str,"RDX: %016lx RSI: %016lx RDI: %016lx\n",
- regs->rdx, regs->rsi, regs->rdi);
- _stp_sprintf(str,"RBP: %016lx R08: %016lx R09: %016lx\n",
- regs->rbp, regs->r8, regs->r9);
- _stp_sprintf(str,"R10: %016lx R11: %016lx R12: %016lx\n",
- regs->r10, regs->r11, regs->r12);
- _stp_sprintf(str,"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_sprintf(str,"FS: %016lx(%04x) GS:%016lx(%04x) knlGS:%016lx\n",
- fs,fsindex,gs,gsindex,shadowgs);
- _stp_sprintf(str,"CS: %04x DS: %04x ES: %04x CR0: %016lx\n", cs, ds, es, cr0);
- _stp_sprintf(str,"CR2: %016lx CR3: %016lx CR4: %016lx\n", cr2, cr3, cr4);
-}
-
-#elif defined (__ia64__)
-void _stp_sprint_regs(String str, struct pt_regs * regs)
-{
- unsigned long ip = regs->cr_iip + ia64_psr(regs)->ri;
-
- _stp_sprintf(str, "\nPid: %d, CPU %d, comm: %20s\n", current->pid,
- smp_processor_id(), current->comm);
- _stp_sprintf(str, "psr : %016lx ifs : %016lx ip : [<%016lx>] \n",
- regs->cr_ipsr, regs->cr_ifs, ip);
- _stp_sprintf(str, "unat: %016lx pfs : %016lx rsc : %016lx\n",
- regs->ar_unat, regs->ar_pfs, regs->ar_rsc);
- _stp_sprintf(str, "rnat: %016lx bsps: %016lx pr : %016lx\n",
- regs->ar_rnat, regs->ar_bspstore, regs->pr);
- _stp_sprintf(str, "ldrs: %016lx ccv : %016lx fpsr: %016lx\n",
- regs->loadrs, regs->ar_ccv, regs->ar_fpsr);
- _stp_sprintf(str, "csd : %016lx ssd : %016lx\n",
- regs->ar_csd, regs->ar_ssd);
- _stp_sprintf(str, "b0 : %016lx b6 : %016lx b7 : %016lx\n",
- regs->b0, regs->b6, regs->b7);
- _stp_sprintf(str, "f6 : %05lx%016lx f7 : %05lx%016lx\n",
- regs->f6.u.bits[1], regs->f6.u.bits[0],
- regs->f7.u.bits[1], regs->f7.u.bits[0]);
- _stp_sprintf(str, "f8 : %05lx%016lx f9 : %05lx%016lx\n",
- regs->f8.u.bits[1], regs->f8.u.bits[0],
- regs->f9.u.bits[1], regs->f9.u.bits[0]);
- _stp_sprintf(str, "f10 : %05lx%016lx f11 : %05lx%016lx\n",
- regs->f10.u.bits[1], regs->f10.u.bits[0],
- regs->f11.u.bits[1], regs->f11.u.bits[0]);
-}
-
-#elif defined (__i386__)
-
-/** Write the registers to a string.
- * @param regs The pt_regs saved by the kprobe.
- * @note i386 and x86_64 only so far.
- */
-void _stp_sprint_regs(String str, struct pt_regs * regs)
-{
- unsigned long cr0 = 0L, cr2 = 0L, cr3 = 0L, cr4 = 0L;
-
- _stp_sprintf (str, "EIP: %08lx\n",regs->eip);
- _stp_sprintf (str, "ESP: %08lx\n",regs->esp);
- _stp_sprintf (str, "EAX: %08lx EBX: %08lx ECX: %08lx EDX: %08lx\n",
- regs->eax,regs->ebx,regs->ecx,regs->edx);
- _stp_sprintf (str, "ESI: %08lx EDI: %08lx EBP: %08lx",
- regs->esi, regs->edi, regs->ebp);
- _stp_sprintf (str, " DS: %04x ES: %04x\n",
- 0xffff & regs->xds,0xffff & regs->xes);
-
- __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_sprintf (str, "CR0: %08lx CR2: %08lx CR3: %08lx CR4: %08lx\n", cr0, cr2, cr3, cr4);
-}
-
-#elif defined (__powerpc64__)
-
-void _stp_sprint_regs(String str, struct pt_regs * regs)
-{
- int i;
-
- _stp_sprintf(str, "NIP: %016lX XER: %08X LR: %016lX CTR: %016lX\n",
- regs->nip, (unsigned int)regs->xer, regs->link, regs->ctr);
- _stp_sprintf(str, "REGS: %p TRAP: %04lx\n", regs, regs->trap);
- _stp_sprintf(str, "MSR: %016lx CR: %08X\n",
- regs->msr, (unsigned int)regs->ccr);
- _stp_sprintf(str, "DAR: %016lx DSISR: %016lx\n",
- regs->dar, regs->dsisr);
-
-#ifdef CONFIG_SMP
- _stp_sprintf(str, " CPU: %d", smp_processor_id());
-#endif /* CONFIG_SMP */
-
- for (i = 0; i < 32; i++) {
- if ((i % 4) == 0) {
- _stp_sprintf(str, "\n GPR%02d: ", i);
- }
-
- _stp_sprintf(str, "%016lX ", regs->gpr[i]);
- if (i == 13 && !FULL_REGS(regs))
- break;
- }
- _stp_string_cat(str, "\n");
- _stp_sprintf(str, "NIP [%016lx] ", regs->nip);
- _stp_sprintf(str, "LR [%016lx] ", regs->link);
- _stp_string_cat(str, regs->link);
- _stp_string_cat(str, "\n");
-}
-
-#elif defined (__s390x__) || defined (__s390__)
-
-#ifdef __s390x__
-#define GPRSIZE "%016lX "
-#else /* s390 */
-#define GPRSIZE "%08lX "
-#endif
-
-void _stp_sprint_regs(String str, struct pt_regs * regs)
-{
- char *mode;
- int i;
-
- mode = (regs->psw.mask & PSW_MASK_PSTATE) ? "User" : "Krnl";
- _stp_sprintf(str,"%s PSW : ["GPRSIZE"] ["GPRSIZE"]",
- mode, (void *) regs->psw.mask,
- (void *) regs->psw.addr);
-
-#ifdef CONFIG_SMP
- _stp_sprintf(str, " CPU: %d", smp_processor_id());
-#endif /* CONFIG_SMP */
-
- for (i = 0; i < 16; i++) {
- if ((i % 4) == 0) {
- _stp_sprintf(str, "\n GPRS%02d: ", i);
- }
- _stp_sprintf(str, GPRSIZE, regs->gprs[i]);
- }
- _stp_string_cat(str, "\n");
-}
-
-#endif
-
-/** Print the registers.
- * @param regs The pt_regs saved by the kprobe.
- * @note i386 and x86_64 only so far.
- */
-#define _stp_print_regs(regs) \
- { \
- _stp_sprint_regs(_stp_stdout,regs); \
- _stp_print_flush(); \
- }
-
-/** @} */
-#endif /* _CURRENT_C_ */
generated by cgit (git 2.34.1) at 2025-08-02 08:39:11 +0000