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um: Fix FP register size for XSTATE/XSAVE

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Hard code max size. Taken from
https://sourceware.org/git/?p=binutils-gdb.git;a=blob;f=gdb/common/x86-xstate.h

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Thomas Meyer
2017-07-29 17:03:23 +02:00
committed by Richard Weinberger
parent 569dbb88e8
commit 6f602afda7
6 changed files with 27 additions and 19 deletions
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17
arch/um/os-Linux/skas/process.c
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@@ -88,12 +88,11 @@ bad_wait:
extern unsigned long current_stub_stack(void);
static void get_skas_faultinfo(int pid, struct faultinfo *fi)
static void get_skas_faultinfo(int pid, struct faultinfo *fi, unsigned long *aux_fp_regs)
{
int err;
unsigned long fpregs[FP_SIZE];
err = get_fp_registers(pid, fpregs);
err = get_fp_registers(pid, aux_fp_regs);
if (err < 0) {
printk(UM_KERN_ERR "save_fp_registers returned %d\n",
err);
@@ -113,7 +112,7 @@ static void get_skas_faultinfo(int pid, struct faultinfo *fi)
*/
memcpy(fi, (void *)current_stub_stack(), sizeof(*fi));
err = put_fp_registers(pid, fpregs);
err = put_fp_registers(pid, aux_fp_regs);
if (err < 0) {
printk(UM_KERN_ERR "put_fp_registers returned %d\n",
err);
@@ -121,9 +120,9 @@ static void get_skas_faultinfo(int pid, struct faultinfo *fi)
}
}
static void handle_segv(int pid, struct uml_pt_regs * regs)
static void handle_segv(int pid, struct uml_pt_regs *regs, unsigned long *aux_fp_regs)
{
get_skas_faultinfo(pid, &regs->faultinfo);
get_skas_faultinfo(pid, &regs->faultinfo, aux_fp_regs);
segv(regs->faultinfo, 0, 1, NULL);
}
@@ -332,7 +331,7 @@ int start_userspace(unsigned long stub_stack)
return err;
}
void userspace(struct uml_pt_regs *regs)
void userspace(struct uml_pt_regs *regs, unsigned long *aux_fp_regs)
{
int err, status, op, pid = userspace_pid[0];
/* To prevent races if using_sysemu changes under us.*/
@@ -407,11 +406,11 @@ void userspace(struct uml_pt_regs *regs)
case SIGSEGV:
if (PTRACE_FULL_FAULTINFO) {
get_skas_faultinfo(pid,
&regs->faultinfo);
&regs->faultinfo, aux_fp_regs);
(*sig_info[SIGSEGV])(SIGSEGV, (struct siginfo *)&si,
regs);
}
else handle_segv(pid, regs);
else handle_segv(pid, regs, aux_fp_regs);
break;
case SIGTRAP + 0x80:
handle_trap(pid, regs, local_using_sysemu);