#include <errno.h>
#include <string.h>
-#include <setjmp.h>
#include "sysdep/ptrace_user.h"
#include "sysdep/ptrace.h"
#include "uml-config.h"
#include "skas_ptregs.h"
#include "registers.h"
+#include "longjmp.h"
#include "user.h"
/* These are set once at boot time and not changed thereafter */
int save_fp_registers(int pid, unsigned long *fp_regs)
{
if(ptrace(PTRACE_GETFPREGS, pid, 0, fp_regs) < 0)
- return(-errno);
- return(0);
+ return -errno;
+ return 0;
}
int restore_fp_registers(int pid, unsigned long *fp_regs)
{
if(ptrace(PTRACE_SETFPREGS, pid, 0, fp_regs) < 0)
- return(-errno);
- return(0);
+ return -errno;
+ return 0;
}
static int move_registers(int pid, int int_op, union uml_pt_regs *regs,
int fp_op, unsigned long *fp_regs)
{
if(ptrace(int_op, pid, 0, regs->skas.regs) < 0)
- return(-errno);
+ return -errno;
if(ptrace(fp_op, pid, 0, fp_regs) < 0)
- return(-errno);
+ return -errno;
- return(0);
+ return 0;
}
void save_registers(int pid, union uml_pt_regs *regs)
err = ptrace(PTRACE_GETREGS, pid, 0, exec_regs);
if(err)
panic("check_ptrace : PTRACE_GETREGS failed, errno = %d",
- err);
+ errno);
errno = 0;
err = ptrace(PTRACE_GETFPXREGS, pid, 0, exec_fpx_regs);
err = ptrace(PTRACE_GETFPREGS, pid, 0, exec_fp_regs);
if(err)
panic("check_ptrace : PTRACE_GETFPREGS failed, errno = %d",
- err);
+ errno);
}
void get_safe_registers(unsigned long *regs, unsigned long *fp_regs)
HOST_FP_SIZE * sizeof(unsigned long));
}
-void get_thread_regs(union uml_pt_regs *uml_regs, void *buffer)
+unsigned long get_thread_reg(int reg, jmp_buf *buf)
{
- struct __jmp_buf_tag *jmpbuf = buffer;
-
- UPT_SET(uml_regs, EIP, jmpbuf->__jmpbuf[JB_PC]);
- UPT_SET(uml_regs, UESP, jmpbuf->__jmpbuf[JB_SP]);
- UPT_SET(uml_regs, EBP, jmpbuf->__jmpbuf[JB_BP]);
+ switch(reg){
+ case EIP: return buf[0]->__eip;
+ case UESP: return buf[0]->__esp;
+ case EBP: return buf[0]->__ebp;
+ default:
+ printk("get_thread_regs - unknown register %d\n", reg);
+ return 0;
+ }
}