Yet more of the ptrace() reorg; now ptrace_setregs() and ptrace_getregs()
are present, along with PT_GETREGS and PT_SETREGS ptrace commands.
This commit is contained in:
sef
parent
15359c9f59
commit
b477be52eb
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@ -35,7 +35,7 @@
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* SUCH DAMAGE.
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*
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* from: @(#)machdep.c 7.4 (Berkeley) 6/3/91
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* $Id: machdep.c,v 1.46 1993/09/05 01:31:39 cgd Exp $
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* $Id: machdep.c,v 1.47 1993/09/05 03:54:11 sef Exp $
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*/
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#include "npx.h"
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@ -1518,3 +1518,114 @@ ptrace_single_step (struct proc *p) {
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((struct syscframe *)regs)->sf_eflags |= PSL_T;
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return 0;
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}
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/*
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* Copy the registers to user-space. This is tedious because
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* we essentially duplicate code for trapframe and syscframe. *sigh*
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*/
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int
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ptrace_getregs (struct proc *p, unsigned int *addr) {
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int error;
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struct trapframe *tp;
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struct syscframe *sp;
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struct pcb *pcb;
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struct regs regs = {0};
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void *ptr = (char*)p->p_addr +
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((char*) p->p_regs - (char*) kstack);
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pcb = &p->p_addr->u_pcb;
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if (pcb->pcb_flags & FM_TRAP) {
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tp = ptr;
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regs.r_es = tp->tf_es;
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regs.r_ds = tp->tf_ds;
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regs.r_edi = tp->tf_edi;
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regs.r_esi = tp->tf_esi;
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regs.r_ebp = tp->tf_ebp;
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regs.r_ebx = tp->tf_ebx;
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regs.r_edx = tp->tf_edx;
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regs.r_ecx = tp->tf_ecx;
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regs.r_eax = tp->tf_eax;
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regs.r_eip = tp->tf_eip;
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regs.r_cs = tp->tf_cs;
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regs.r_eflags = tp->tf_eflags;
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regs.r_esp = tp->tf_esp;
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regs.r_ss = tp->tf_ss;
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} else {
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sp = ptr;
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/*
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* No sf_es or sf_ds... dunno why.
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*/
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/*
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* regs.r_es = sp->sf_es;
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* regs.r_ds = sp->sf_ds;
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*/
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regs.r_edi = sp->sf_edi;
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regs.r_esi = sp->sf_esi;
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regs.r_ebp = sp->sf_ebp;
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regs.r_ebx = sp->sf_ebx;
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regs.r_edx = sp->sf_edx;
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regs.r_ecx = sp->sf_ecx;
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regs.r_eax = sp->sf_eax;
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regs.r_eip = sp->sf_eip;
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regs.r_cs = sp->sf_cs;
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regs.r_eflags = sp->sf_eflags;
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regs.r_esp = sp->sf_esp;
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regs.r_ss = sp->sf_ss;
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}
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return copyout (®s, addr, sizeof (regs));
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}
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int
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ptrace_setregs (struct proc *p, unsigned int *addr) {
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int error;
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struct trapframe *tp;
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struct syscframe *sp;
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struct pcb *pcb;
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struct regs regs = {0};
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void *ptr = (char*)p->p_addr +
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((char*) p->p_regs - (char*) kstack);
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if (error = copyin (addr, ®s, sizeof(regs)))
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return error;
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pcb = &p->p_addr->u_pcb;
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if (pcb->pcb_flags & FM_TRAP) {
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tp = ptr;
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tp->tf_es = regs.r_es;
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tp->tf_ds = regs.r_ds;
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tp->tf_edi = regs.r_edi;
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tp->tf_esi = regs.r_esi;
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tp->tf_ebp = regs.r_ebp;
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tp->tf_ebx = regs.r_ebx;
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tp->tf_edx = regs.r_edx;
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tp->tf_ecx = regs.r_ecx;
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tp->tf_eax = regs.r_eax;
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tp->tf_eip = regs.r_eip;
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tp->tf_cs = regs.r_cs;
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tp->tf_eflags = regs.r_eflags;
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tp->tf_esp = regs.r_esp;
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tp->tf_ss = regs.r_ss;
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} else {
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sp = ptr;
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/*
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* No sf_es or sf_ds members, dunno why...
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*/
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/*
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* sp->sf_es = regs.r_es;
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* sp->sf_ds = regs.r_ds;
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*/
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sp->sf_edi = regs.r_edi;
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sp->sf_esi = regs.r_esi;
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sp->sf_ebp = regs.r_ebp;
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sp->sf_ebx = regs.r_ebx;
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sp->sf_edx = regs.r_edx;
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sp->sf_ecx = regs.r_ecx;
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sp->sf_eax = regs.r_eax;
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sp->sf_eip = regs.r_eip;
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sp->sf_cs = regs.r_cs;
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regs.r_eflags = sp->sf_eflags;
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regs.r_esp = sp->sf_esp;
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regs.r_ss = sp->sf_ss;
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}
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return 0;
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}
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@ -34,7 +34,7 @@
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* SUCH DAMAGE.
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*
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* from: @(#)reg.h 5.5 (Berkeley) 1/18/91
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* $Id: reg.h,v 1.3 1993/05/24 11:37:21 cgd Exp $
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* $Id: reg.h,v 1.4 1993/09/05 03:54:15 sef Exp $
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*/
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/*
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@ -86,11 +86,25 @@
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#define R1 sECX
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/*
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* Registers accessible to ptrace(2) syscall for debugger
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* The machine-dependent code for PT_{SET,GET}REGS needs to
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* use whichver order, defined above, is correct, so that it
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* is all invisible to the user.
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*/
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#ifdef IPCREG
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#define NIPCREG 14
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int ipcreg[NIPCREG] =
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{ tES,tDS,tEDI,tESI,tEBP,tEBX,tEDX,tECX,tEAX,tEIP,tCS,tEFLAGS,tESP,tSS };
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int sipcreg[NIPCREG] = /* Should we define a structure with all regs? XXX */
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{ 0, 0, sEDI,sESI,sEBP,sEBX,sEDX,sECX,sEAX,sEIP,sCS,sEFLAGS,sESP,sSS };
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#endif
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struct regs {
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unsigned int r_es;
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unsigned int r_ds;
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unsigned int r_edi;
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unsigned int r_esi;
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unsigned int r_ebp;
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unsigned int r_ebx;
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unsigned int r_edx;
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unsigned int r_ecx;
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unsigned int r_eax;
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unsigned int r_eip;
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unsigned int r_cs;
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unsigned int r_eflags;
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unsigned int r_esp;
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unsigned int r_ss;
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unsigned int r_fs;
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unsigned int r_gs;
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};
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@ -1 +1 @@
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revision 1.10 intentionally removed
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revision 1.11 intentionally removed
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@ -31,7 +31,7 @@
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* SUCH DAMAGE.
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*
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* from: @(#)ptrace.h 7.4 (Berkeley) 2/22/91
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* $Id: ptrace.h,v 1.4 1993/09/04 05:32:42 cgd Exp $
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* $Id: ptrace.h,v 1.5 1993/09/05 03:54:18 sef Exp $
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*/
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#ifndef _SYS_PTRACE_H_
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@ -49,6 +49,9 @@
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#define PT_STEP 9 /* single step the child */
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/*#define PT_ATTACH 10 /* attach to running process */
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/*#define PT_DETACH 11 /* detach from running process */
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#define PT_GETREGS 12 /* fetch registers */
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#define PT_SETREGS 13 /* set registers */
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#ifndef KERNEL
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#include <sys/cdefs.h>
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