Release 4.9 arch/x86/um/os-Linux/registers.c
/*
* Copyright (C) 2004 PathScale, Inc
* Copyright (C) 2004 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
* Licensed under the GPL
*/
#include <errno.h>
#include <sys/ptrace.h>
#ifdef __i386__
#include <sys/user.h>
#endif
#include <longjmp.h>
#include <sysdep/ptrace_user.h>
#include <sys/uio.h>
#include <asm/sigcontext.h>
#include <linux/elf.h>
int have_xstate_support;
int save_i387_registers(int pid, unsigned long *fp_regs)
{
if (ptrace(PTRACE_GETFPREGS, pid, 0, fp_regs) < 0)
return -errno;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jeff dike | jeff dike | 34 | 97.14% | 1 | 50.00% |
| eli cooper | eli cooper | 1 | 2.86% | 1 | 50.00% |
| Total | 35 | 100.00% | 2 | 100.00% |
int save_fp_registers(int pid, unsigned long *fp_regs)
{
struct iovec iov;
if (have_xstate_support) {
iov.iov_base = fp_regs;
iov.iov_len = sizeof(struct _xstate);
if (ptrace(PTRACE_GETREGSET, pid, NT_X86_XSTATE, &iov) < 0)
return -errno;
return 0;
} else {
return save_i387_registers(pid, fp_regs);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| eli cooper | eli cooper | 72 | 98.63% | 1 | 50.00% |
| jeff dike | jeff dike | 1 | 1.37% | 1 | 50.00% |
| Total | 73 | 100.00% | 2 | 100.00% |
int restore_i387_registers(int pid, unsigned long *fp_regs)
{
if (ptrace(PTRACE_SETFPREGS, pid, 0, fp_regs) < 0)
return -errno;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jeff dike | jeff dike | 33 | 94.29% | 1 | 50.00% |
| eli cooper | eli cooper | 2 | 5.71% | 1 | 50.00% |
| Total | 35 | 100.00% | 2 | 100.00% |
int restore_fp_registers(int pid, unsigned long *fp_regs)
{
struct iovec iov;
if (have_xstate_support) {
iov.iov_base = fp_regs;
iov.iov_len = sizeof(struct _xstate);
if (ptrace(PTRACE_SETREGSET, pid, NT_X86_XSTATE, &iov) < 0)
return -errno;
return 0;
} else {
return restore_i387_registers(pid, fp_regs);
}
}
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| eli cooper | eli cooper | 73 | 100.00% | 1 | 100.00% |
| Total | 73 | 100.00% | 1 | 100.00% |
#ifdef __i386__
int have_fpx_regs = 1;
int save_fpx_registers(int pid, unsigned long *fp_regs)
{
if (ptrace(PTRACE_GETFPXREGS, pid, 0, fp_regs) < 0)
return -errno;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jeff dike | jeff dike | 35 | 100.00% | 1 | 100.00% |
| Total | 35 | 100.00% | 1 | 100.00% |
int restore_fpx_registers(int pid, unsigned long *fp_regs)
{
if (ptrace(PTRACE_SETFPXREGS, pid, 0, fp_regs) < 0)
return -errno;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jeff dike | jeff dike | 35 | 100.00% | 1 | 100.00% |
| Total | 35 | 100.00% | 1 | 100.00% |
int get_fp_registers(int pid, unsigned long *regs)
{
if (have_fpx_regs)
return save_fpx_registers(pid, regs);
else
return save_fp_registers(pid, regs);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jeff dike | jeff dike | 34 | 100.00% | 1 | 100.00% |
| Total | 34 | 100.00% | 1 | 100.00% |
int put_fp_registers(int pid, unsigned long *regs)
{
if (have_fpx_regs)
return restore_fpx_registers(pid, regs);
else
return restore_fp_registers(pid, regs);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jeff dike | jeff dike | 34 | 100.00% | 1 | 100.00% |
| Total | 34 | 100.00% | 1 | 100.00% |
void arch_init_registers(int pid)
{
struct user_fpxregs_struct fpx_regs;
int err;
err = ptrace(PTRACE_GETFPXREGS, pid, 0, &fpx_regs);
if (!err)
return;
if (errno != EIO)
panic("check_ptrace : PTRACE_GETFPXREGS failed, errno = %d",
errno);
have_fpx_regs = 0;
}
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| Person | Tokens | Prop | Commits | CommitProp |
| jeff dike | jeff dike | 52 | 100.00% | 3 | 100.00% |
| Total | 52 | 100.00% | 3 | 100.00% |
#else
int get_fp_registers(int pid, unsigned long *regs)
{
return save_fp_registers(pid, regs);
}
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| al viro | al viro | 21 | 100.00% | 1 | 100.00% |
| Total | 21 | 100.00% | 1 | 100.00% |
int put_fp_registers(int pid, unsigned long *regs)
{
return restore_fp_registers(pid, regs);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| al viro | al viro | 21 | 100.00% | 1 | 100.00% |
| Total | 21 | 100.00% | 1 | 100.00% |
void arch_init_registers(int pid)
{
struct _xstate fp_regs;
struct iovec iov;
iov.iov_base = &fp_regs;
iov.iov_len = sizeof(struct _xstate);
if (ptrace(PTRACE_GETREGSET, pid, NT_X86_XSTATE, &iov) == 0)
have_xstate_support = 1;
}
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| Person | Tokens | Prop | Commits | CommitProp |
| eli cooper | eli cooper | 53 | 100.00% | 1 | 100.00% |
| Total | 53 | 100.00% | 1 | 100.00% |
#endif
unsigned long get_thread_reg(int reg, jmp_buf *buf)
{
switch (reg) {
#ifdef __i386__
case HOST_IP:
return buf[0]->__eip;
case HOST_SP:
return buf[0]->__esp;
case HOST_BP:
return buf[0]->__ebp;
#else
case HOST_IP:
return buf[0]->__rip;
case HOST_SP:
return buf[0]->__rsp;
case HOST_BP:
return buf[0]->__rbp;
#endif
default:
printk(UM_KERN_ERR "get_thread_regs - unknown register %d\n",
reg);
return 0;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| al viro | al viro | 104 | 100.00% | 2 | 100.00% |
| Total | 104 | 100.00% | 2 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jeff dike | jeff dike | 269 | 41.38% | 8 | 57.14% |
| eli cooper | eli cooper | 213 | 32.77% | 1 | 7.14% |
| al viro | al viro | 163 | 25.08% | 4 | 28.57% |
| richard weinberger | richard weinberger | 5 | 0.77% | 1 | 7.14% |
| Total | 650 | 100.00% | 14 | 100.00% |