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supports PTRACE_GETREGSET, PTRACE_SETREGSET.

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supports PTRACE_GETFPREGS, PTRACE_SETFPREGS.

refs #421
This commit is contained in:
Susumu Komae
2015-03-06 19:18:32 +09:00
committed by postpeta
parent 6a82412d64
commit b553de7435
3 changed files with 175 additions and 13 deletions
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66
arch/x86/kernel/syscall.c
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@@ -23,12 +23,14 @@
#include <string.h>
#include <errno.h>
#include <kmalloc.h>
#include <uio.h>
void terminate(int, int, ihk_mc_user_context_t *);
int copy_from_user(void *dst, const void *src, size_t siz);
int copy_to_user(void *dst, const void *src, size_t siz);
int write_process_vm(struct process_vm *vm, void *dst, const void *src, size_t siz);
long do_sigaction(int sig, struct k_sigaction *act, struct k_sigaction *oact);
extern void save_fp_regs(struct process *proc);
//#define DEBUG_PRINT_SC
@@ -368,6 +370,70 @@ void set_single_step(struct process *proc)
proc->uctx->gpr.rflags |= RFLAGS_TF;
}
long ptrace_read_fpregs(struct process *proc, void *fpregs)
{
save_fp_regs(proc);
if (proc->fp_regs == NULL) {
return -ENOMEM;
}
return copy_to_user(fpregs, &proc->fp_regs->i387,
sizeof(struct i387_fxsave_struct));
}
long ptrace_write_fpregs(struct process *proc, void *fpregs)
{
save_fp_regs(proc);
if (proc->fp_regs == NULL) {
return -ENOMEM;
}
return copy_from_user(&proc->fp_regs->i387, fpregs,
sizeof(struct i387_fxsave_struct));
}
long ptrace_read_regset(struct process *proc, long type, struct iovec *iov)
{
long rc = -EINVAL;
switch (type) {
case NT_X86_XSTATE:
save_fp_regs(proc);
if (proc->fp_regs == NULL) {
return -ENOMEM;
}
if (iov->iov_len > sizeof(fp_regs_struct)) {
iov->iov_len = sizeof(fp_regs_struct);
}
rc = copy_to_user(&iov->iov_base, proc->fp_regs, iov->iov_len);
break;
default:
kprintf("ptrace_read_regset: not supported type 0x%x\n", type);
break;
}
return rc;
}
long ptrace_write_regset(struct process *proc, long type, struct iovec *iov)
{
long rc = -EINVAL;
switch (type) {
case NT_X86_XSTATE:
save_fp_regs(proc);
if (proc->fp_regs == NULL) {
return -ENOMEM;
}
if (iov->iov_len > sizeof(fp_regs_struct)) {
iov->iov_len = sizeof(fp_regs_struct);
}
rc = copy_from_user(proc->fp_regs, &iov->iov_base, iov->iov_len);
break;
default:
kprintf("ptrace_write_regset: not supported type 0x%x\n", type);
break;
}
return rc;
}
extern void coredump(struct process *proc, void *regs);
void ptrace_report_signal(struct process *proc, int sig)