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arm64: elf: fix core dumping definitions for GP and FP registers 

struct user_fp does not exist for arm64, so use struct user_fpsimd_state
instead for the ELF core dumping definitions. Furthermore, since we use
regset-based core dumping, we do not need definitions for dump_task_regs
and dump_fpu.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Will Deacon 2012-11-06 19:28:48 +00:00 committed by Catalin Marinas
parent f46f979fda
commit 6ba1bc826d
3 changed files with 3 additions and 25 deletions
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5
arch/arm64/include/asm/elf.h
View File

@ -25,12 +25,10 @@
#include <asm/user.h>
typedef unsigned long elf_greg_t;
typedef unsigned long elf_freg_t[3];
#define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t))
typedef elf_greg_t elf_gregset_t[ELF_NGREG];
typedef struct user_fp elf_fpregset_t;
typedef struct user_fpsimd_state elf_fpregset_t;
#define EM_AARCH64 183
@ -87,7 +85,6 @@ typedef struct user_fp elf_fpregset_t;
#define R_AARCH64_MOVW_PREL_G2_NC 292
#define R_AARCH64_MOVW_PREL_G3 293
/*
* These are used to set parameters in the core dumps.
*/

5
arch/arm64/include/asm/fpsimd.h
View File

@ -25,9 +25,8 @@
* - FPSR and FPCR
* - 32 128-bit data registers
*
* Note that user_fp forms a prefix of this structure, which is relied
* upon in the ptrace FP/SIMD accessors. struct user_fpsimd_state must
* form a prefix of struct fpsimd_state.
* Note that user_fpsimd forms a prefix of this structure, which is
* relied upon in the ptrace FP/SIMD accessors.
*/
struct fpsimd_state {
union {

18
arch/arm64/kernel/process.c
View File

@ -309,24 +309,6 @@ struct task_struct *__switch_to(struct task_struct *prev,
return last;
}
/*
* Fill in the task's elfregs structure for a core dump.
*/
int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs)
{
elf_core_copy_regs(elfregs, task_pt_regs(t));
return 1;
}
/*
* fill in the fpe structure for a core dump...
*/
int dump_fpu (struct pt_regs *regs, struct user_fp *fp)
{
return 0;
}
EXPORT_SYMBOL(dump_fpu);
/*
* Shuffle the argument into the correct register before calling the
* thread function. x1 is the thread argument, x2 is the pointer to