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uml: coredumping floating point fixes

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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: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jeff Dike 2007-10-16 01:27:17 -07:00 committed by Linus Torvalds
parent e8012b584f
commit 058ac308f3
3 changed files with 12 additions and 24 deletions
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22
arch/um/sys-i386/ptrace.c
View file

@ -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); 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 subarch_ptrace(struct task_struct *child, long request, long addr,
long data) long data)
{ {

12
include/asm-um/elf-i386.h
View file

@ -5,7 +5,8 @@
#ifndef __UM_ELF_I386_H #ifndef __UM_ELF_I386_H
#define __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_NONE 0
#define R_386_32 1 #define R_386_32 1
@ -75,6 +76,15 @@ typedef struct user_i387_struct elf_fpregset_t;
pr_reg[16] = PT_REGS_SS(regs); \ pr_reg[16] = PT_REGS_SS(regs); \
} while(0); } 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; extern long elf_aux_hwcap;
#define ELF_HWCAP (elf_aux_hwcap) #define ELF_HWCAP (elf_aux_hwcap)

2
include/asm-um/elf-x86_64.h
View file

@ -36,7 +36,7 @@ typedef unsigned long elf_greg_t;
#define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof(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 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. * This is used to ensure we don't load something for the wrong architecture.