[Crash-utility] crash gcore command, version 1.3.0-rc is released
HATAYAMA Daisuke
d.hatayama at jp.fujitsu.com
Thu Oct 16 01:07:49 UTC 2014
From: Wei Shu <weishu at marvell.com>
Subject: RE: [Crash-utility] crash gcore command, version 1.3.0-rc is released
Date: Wed, 15 Oct 2014 02:55:43 -0700
> From 623038a48cded0d2b5ad804c78b92d6b7d979cac Mon Sep 17 00:00:00 2001
> From: Lei Wen <leiwen at marvell.com>
> Date: Mon, 28 Jul 2014 10:12:57 +0800
> Subject: [PATCH 1/4] gcore: fix build for arm64
>
Could you write more patch description? At least I don't know arm
things. Please explain what this patch does in more detail.
> Change-Id: Ic075720ea7a0d3523cdde616772b3d75dd90f7ae
> Signed-off-by: Lei Wen <leiwen at marvell.com>
> ---
> extensions/libgcore/gcore_arm64.c | 4 +--
> extensions/libgcore/gcore_coredump.c | 5 ---
> extensions/libgcore/gcore_defs.h | 58 +++++++++++++++++++++++++++-------
> 3 files changed, 49 insertions(+), 18 deletions(-)
>
> diff --git a/extensions/libgcore/gcore_arm64.c b/extensions/libgcore/gcore_arm64.c
> index 8ea1994..5f05dd9 100644
> --- a/extensions/libgcore/gcore_arm64.c
> +++ b/extensions/libgcore/gcore_arm64.c
> @@ -24,12 +24,12 @@ static int gpr_get(struct task_context *target,
> const struct user_regset *regset,
> unsigned int size, void *buf)
> {
> - struct user_pt_regs *regs = (struct user_pt_regs *)buf;
> + struct user_regs_struct *regs = (struct user_regs_struct *)buf;
>
> BZERO(regs, sizeof(*regs));
>
> readmem(machdep->get_stacktop(target->task) - 16 - SIZE(pt_regs), KVADDR,
> - regs, sizeof(struct user_pt_regs), "gpr_get: user_pt_regs",
> + regs, sizeof(struct user_regs_struct), "gpr_get: user_regs_struct",
> gcore_verbose_error_handle());
>
> return 0;
> diff --git a/extensions/libgcore/gcore_coredump.c b/extensions/libgcore/gcore_coredump.c
> index fe6b46e..19156d0 100644
> --- a/extensions/libgcore/gcore_coredump.c
> +++ b/extensions/libgcore/gcore_coredump.c
> @@ -682,12 +682,7 @@ fill_prstatus_note(struct elf_note_info *info, struct task_context *tc,
> struct memelfnote *memnote)
> {
> struct elf_prstatus dummy, *prstatus = (struct elf_prstatus *)memnote->data;
> -#if defined(X86) || defined(X86_64) || defined(ARM)
> struct user_regs_struct *regs = (struct user_regs_struct *)memnote->data;
> -#endif
> -#ifdef ARM64
> - struct user_pt_regs *regs = (struct user_pt_regs *)memnote->data;
> -#endif
> ulong pending_signal_sig0, blocked_sig0, real_parent, group_leader,
> signal, cutime, cstime;
>
> diff --git a/extensions/libgcore/gcore_defs.h b/extensions/libgcore/gcore_defs.h
> index a34ff98..ba7c1bd 100644
> --- a/extensions/libgcore/gcore_defs.h
> +++ b/extensions/libgcore/gcore_defs.h
> @@ -486,10 +486,54 @@ struct user_regs_struct{
> #define ARM_VFPREGS_SIZE ( 32 * 8 /*fpregs*/ + 4 /*fpscr*/ )
> #endif
>
> +#ifdef ARM64
> +struct user_fpsimd_state {
> + __uint128_t vregs[32];
> + uint32_t fpsr;
> + uint32_t fpcr;
> +};
> +
> +struct user_regs_struct{
> + unsigned long x0;
> + unsigned long x1;
> + unsigned long x2;
> + unsigned long x3;
> + unsigned long x4;
> + unsigned long x5;
> + unsigned long x6;
> + unsigned long x7;
> + unsigned long x8;
> + unsigned long x9;
> + unsigned long x10;
> + unsigned long x11;
> + unsigned long x12;
> + unsigned long x13;
> + unsigned long x14;
> + unsigned long x15;
> + unsigned long x16;
> + unsigned long x17;
> + unsigned long x18;
> + unsigned long x19;
> + unsigned long x20;
> + unsigned long x21;
> + unsigned long x22;
> + unsigned long x23;
> + unsigned long x24;
> + unsigned long x25;
> + unsigned long x26;
> + unsigned long x27;
> + unsigned long x28;
> + unsigned long x29;
> + unsigned long x30;
> + unsigned long x31;
> + unsigned long pc;
> + unsigned long cpsr;
> +};
Where does this data structure come? It looks to me that the following
is used as NT_PRSTATUS at kernel ARM64 source code and current gcore
ARM64 source by Dave:
struct user_pt_regs {
__u64 regs[31];
__u64 sp;
__u64 pc;
__u64 pstate;
};
The binary layout is identical to the above structure but member names
are slightly differnet; in particular, cpsr v.s. pstate.
I think it better to use kernel's data structure for maintainance
purpose.
> +
> +#endif
> +
> typedef ulong elf_greg_t;
> -#if defined(X86) || defined(X86_64) || defined(ARM)
> #define ELF_NGREG (sizeof(struct user_regs_struct) / sizeof(elf_greg_t))
> -#endif
> typedef elf_greg_t elf_gregset_t[ELF_NGREG];
>
> #if defined(X86) || defined(ARM)
> @@ -534,14 +578,12 @@ enum pid_type
> PIDTYPE_MAX
> };
>
> -#if defined(X86) || defined(X86_64) || defined(ARM)
> struct elf_siginfo
> {
> int si_signo; /* signal number */
> int si_code; /* extra code */
> int si_errno; /* errno */
> };
> -#endif
>
> /* Parameters used to convert the timespec values: */
> #define NSEC_PER_USEC 1000L
> @@ -633,7 +675,6 @@ cputime_to_compat_timeval(const cputime_t cputime,
> }
> #endif
>
> -#if defined(X86) || defined(X86_64) || defined(ARM)
> struct elf_prstatus
> {
> struct elf_siginfo pr_info; /* Info associated with signal */
> @@ -651,17 +692,14 @@ struct elf_prstatus
> elf_gregset_t pr_reg; /* GP registers */
> int pr_fpvalid; /* True if math co-processor being used. */
> };
> -#endif
>
> -#if defined(X86) || defined(X86_64) || defined(ARM)
> typedef unsigned short __kernel_old_uid_t;
> typedef unsigned short __kernel_old_gid_t;
> -#endif
>
> typedef __kernel_old_uid_t old_uid_t;
> typedef __kernel_old_gid_t old_gid_t;
>
> -#ifdef X86_64
> +#if defined(X86_64) || defined(ARM64)
> typedef unsigned int __kernel_uid_t;
> typedef unsigned int __kernel_gid_t;
> #endif
> @@ -724,7 +762,6 @@ static inline ulong ffz(ulong word)
>
> #define ELF_PRARGSZ (80) /* Number of chars for args */
>
> -#if defined(X86) || defined(X86_64) || defined(ARM)
> struct elf_prpsinfo
> {
> char pr_state; /* numeric process state */
> @@ -739,7 +776,6 @@ struct elf_prpsinfo
> char pr_fname[16]; /* filename of executable */
> char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */
> };
> -#endif
>
> #ifdef GCORE_ARCH_COMPAT
>
> --
> 1.7.9.5
>
--
Thanks.
HATAYAMA, Daisuke
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