Commit 058ac308 authored by Jeff Dike's avatar Jeff Dike Committed by Linus Torvalds

uml: coredumping floating point fixes

Fix core dumping of floating point state.  ELF_CORE_COPY_FPREGS gets a
definitions, and as a result, dump_fpu no longer needs to exist.  Also,
elf_fpregset_t needed a real definition.
Signed-off-by: default avatarJeff Dike <jdike@linux.intel.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent e8012b58
......@@ -205,28 +205,6 @@ int set_fpxregs(struct user_fxsr_struct __user *buf, struct task_struct *child)
return restore_fpx_registers(userspace_pid[cpu], fpregs);
}
#ifdef notdef
int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu)
{
fpu->cwd = (((SC_FP_CW(PT_REGS_SC(regs)) & 0xffff) << 16) |
(SC_FP_SW(PT_REGS_SC(regs)) & 0xffff));
fpu->swd = SC_FP_CSSEL(PT_REGS_SC(regs)) & 0xffff;
fpu->twd = SC_FP_IPOFF(PT_REGS_SC(regs));
fpu->fip = SC_FP_CSSEL(PT_REGS_SC(regs)) & 0xffff;
fpu->fcs = SC_FP_DATAOFF(PT_REGS_SC(regs));
fpu->foo = SC_FP_DATASEL(PT_REGS_SC(regs));
fpu->fos = 0;
memcpy(fpu->st_space, (void *) SC_FP_ST(PT_REGS_SC(regs)),
sizeof(fpu->st_space));
return 1;
}
#endif
int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu )
{
return 1;
}
long subarch_ptrace(struct task_struct *child, long request, long addr,
long data)
{
......
......@@ -5,7 +5,8 @@
#ifndef __UM_ELF_I386_H
#define __UM_ELF_I386_H
#include <asm/user.h>
#include <linux/sched.h>
#include "skas.h"
#define R_386_NONE 0
#define R_386_32 1
......@@ -75,6 +76,15 @@ typedef struct user_i387_struct elf_fpregset_t;
pr_reg[16] = PT_REGS_SS(regs); \
} while(0);
static inline int elf_core_copy_fpregs(struct task_struct *t,
elf_fpregset_t *fpu)
{
int cpu = ((struct thread_info *) t->stack)->cpu;
return save_fp_registers(userspace_pid[cpu], (unsigned long *) fpu);
}
#define ELF_CORE_COPY_FPREGS(t, fpu) elf_core_copy_fpregs(t, fpu)
extern long elf_aux_hwcap;
#define ELF_HWCAP (elf_aux_hwcap)
......
......@@ -36,7 +36,7 @@ typedef unsigned long elf_greg_t;
#define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof(elf_greg_t))
typedef elf_greg_t elf_gregset_t[ELF_NGREG];
typedef struct { } elf_fpregset_t;
typedef struct user_i387_struct elf_fpregset_t;
/*
* This is used to ensure we don't load something for the wrong architecture.
......
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