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x86: Use linux/elfcore-compat.h
This makes x86-64's ia32 code use the new linux/elfcore-compat.h, reducing some hand-copied duplication. Signed-off-by: Roland McGrath <roland@redhat.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Andi Kleen <ak@suse.de> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Roland McGrath
Thomas Gleixner
parent
7778887880
commit
95d1b8f981
@ -5,10 +5,6 @@
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* This tricks binfmt_elf.c into loading 32bit binaries using lots
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* of ugly preprocessor tricks. Talk about very very poor man's inheritance.
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*/
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#define __ASM_X86_64_ELF_H 1
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#undef ELF_CLASS
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#define ELF_CLASS ELFCLASS32
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#include <linux/types.h>
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#include <linux/stddef.h>
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@ -19,6 +15,7 @@
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#include <linux/binfmts.h>
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#include <linux/mm.h>
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#include <linux/security.h>
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#include <linux/elfcore-compat.h>
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#include <asm/segment.h>
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#include <asm/ptrace.h>
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@ -31,6 +28,20 @@
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#include <asm/ia32.h>
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#include <asm/vsyscall32.h>
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#undef ELF_ARCH
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#undef ELF_CLASS
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#define ELF_CLASS ELFCLASS32
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#define ELF_ARCH EM_386
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#undef elfhdr
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#undef elf_phdr
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#undef elf_note
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#undef elf_addr_t
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#define elfhdr elf32_hdr
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#define elf_phdr elf32_phdr
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#define elf_note elf32_note
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#define elf_addr_t Elf32_Off
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#define ELF_NAME "elf/i386"
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#define AT_SYSINFO 32
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@ -48,74 +59,20 @@ int sysctl_vsyscall32 = 1;
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} while(0)
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struct file;
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struct elf_phdr;
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#define IA32_EMULATOR 1
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#undef ELF_ET_DYN_BASE
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#define ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE + 0x1000000)
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#undef ELF_ARCH
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#define ELF_ARCH EM_386
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#define ELF_DATA ELFDATA2LSB
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#define USE_ELF_CORE_DUMP 1
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/* Override elfcore.h */
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#define _LINUX_ELFCORE_H 1
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typedef unsigned int elf_greg_t;
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#define ELF_NGREG (sizeof (struct user_regs_struct32) / sizeof(elf_greg_t))
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typedef elf_greg_t elf_gregset_t[ELF_NGREG];
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struct elf_siginfo
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{
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int si_signo; /* signal number */
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int si_code; /* extra code */
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int si_errno; /* errno */
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};
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#define jiffies_to_timeval(a,b) do { (b)->tv_usec = 0; (b)->tv_sec = (a)/HZ; }while(0)
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struct elf_prstatus
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{
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struct elf_siginfo pr_info; /* Info associated with signal */
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short pr_cursig; /* Current signal */
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unsigned int pr_sigpend; /* Set of pending signals */
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unsigned int pr_sighold; /* Set of held signals */
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pid_t pr_pid;
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pid_t pr_ppid;
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pid_t pr_pgrp;
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pid_t pr_sid;
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struct compat_timeval pr_utime; /* User time */
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struct compat_timeval pr_stime; /* System time */
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struct compat_timeval pr_cutime; /* Cumulative user time */
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struct compat_timeval pr_cstime; /* Cumulative system time */
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elf_gregset_t pr_reg; /* GP registers */
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int pr_fpvalid; /* True if math co-processor being used. */
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};
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#define ELF_PRARGSZ (80) /* Number of chars for args */
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struct elf_prpsinfo
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{
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char pr_state; /* numeric process state */
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char pr_sname; /* char for pr_state */
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char pr_zomb; /* zombie */
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char pr_nice; /* nice val */
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unsigned int pr_flag; /* flags */
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__u16 pr_uid;
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__u16 pr_gid;
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pid_t pr_pid, pr_ppid, pr_pgrp, pr_sid;
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/* Lots missing */
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char pr_fname[16]; /* filename of executable */
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char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */
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};
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#define _GET_SEG(x) \
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({ __u32 seg; asm("movl %%" __stringify(x) ",%0" : "=r"(seg)); seg; })
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/* Assumes current==process to be dumped */
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#undef ELF_CORE_COPY_REGS
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#define ELF_CORE_COPY_REGS(pr_reg, regs) \
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pr_reg[0] = regs->rbx; \
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pr_reg[1] = regs->rcx; \
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@ -135,36 +92,41 @@ struct elf_prpsinfo
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pr_reg[15] = regs->rsp; \
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pr_reg[16] = regs->ss;
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#define user user32
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#define elf_prstatus compat_elf_prstatus
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#define elf_prpsinfo compat_elf_prpsinfo
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#define elf_fpregset_t struct user_i387_ia32_struct
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#define elf_fpxregset_t struct user32_fxsr_struct
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#define user user32
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#undef elf_read_implies_exec
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#define elf_read_implies_exec(ex, executable_stack) (executable_stack != EXSTACK_DISABLE_X)
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//#include <asm/ia32.h>
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#include <linux/elf.h>
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typedef struct user_i387_ia32_struct elf_fpregset_t;
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typedef struct user32_fxsr_struct elf_fpxregset_t;
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static inline void elf_core_copy_regs(elf_gregset_t *elfregs, struct pt_regs *regs)
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#define elf_core_copy_regs elf32_core_copy_regs
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static inline void elf32_core_copy_regs(compat_elf_gregset_t *elfregs,
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struct pt_regs *regs)
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{
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ELF_CORE_COPY_REGS((*elfregs), regs)
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ELF_CORE_COPY_REGS((&elfregs->ebx), regs)
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}
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static inline int elf_core_copy_task_regs(struct task_struct *t, elf_gregset_t* elfregs)
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#define elf_core_copy_task_regs elf32_core_copy_task_regs
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static inline int elf32_core_copy_task_regs(struct task_struct *t,
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compat_elf_gregset_t* elfregs)
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{
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struct pt_regs *pp = task_pt_regs(t);
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ELF_CORE_COPY_REGS((*elfregs), pp);
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ELF_CORE_COPY_REGS((&elfregs->ebx), pp);
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/* fix wrong segments */
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(*elfregs)[7] = t->thread.ds;
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(*elfregs)[9] = t->thread.fsindex;
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(*elfregs)[10] = t->thread.gsindex;
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(*elfregs)[8] = t->thread.es;
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elfregs->ds = t->thread.ds;
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elfregs->fs = t->thread.fsindex;
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elfregs->gs = t->thread.gsindex;
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elfregs->es = t->thread.es;
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return 1;
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}
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#define elf_core_copy_task_fpregs elf32_core_copy_task_fpregs
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static inline int
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elf_core_copy_task_fpregs(struct task_struct *tsk, struct pt_regs *regs, elf_fpregset_t *fpu)
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elf32_core_copy_task_fpregs(struct task_struct *tsk, struct pt_regs *regs,
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elf_fpregset_t *fpu)
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{
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struct _fpstate_ia32 *fpstate = (void*)fpu;
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mm_segment_t oldfs = get_fs();
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@ -186,8 +148,9 @@ elf_core_copy_task_fpregs(struct task_struct *tsk, struct pt_regs *regs, elf_fpr
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#define ELF_CORE_COPY_XFPREGS 1
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#define ELF_CORE_XFPREG_TYPE NT_PRXFPREG
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#define elf_core_copy_task_xfpregs elf32_core_copy_task_xfpregs
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static inline int
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elf_core_copy_task_xfpregs(struct task_struct *t, elf_fpxregset_t *xfpu)
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elf32_core_copy_task_xfpregs(struct task_struct *t, elf_fpxregset_t *xfpu)
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{
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struct pt_regs *regs = task_pt_regs(t);
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if (!tsk_used_math(t))
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@ -206,6 +169,10 @@ elf_core_copy_task_xfpregs(struct task_struct *t, elf_fpxregset_t *xfpu)
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extern int force_personality32;
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#undef ELF_EXEC_PAGESIZE
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#undef ELF_HWCAP
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#undef ELF_PLATFORM
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#undef SET_PERSONALITY
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#define ELF_EXEC_PAGESIZE PAGE_SIZE
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#define ELF_HWCAP (boot_cpu_data.x86_capability[0])
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#define ELF_PLATFORM ("i686")
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@ -231,6 +198,7 @@ do { \
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#define load_elf_binary load_elf32_binary
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#undef ELF_PLAT_INIT
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#define ELF_PLAT_INIT(r, load_addr) elf32_init(r)
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#undef start_thread
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@ -6,6 +6,7 @@
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*/
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#include <linux/types.h>
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#include <linux/sched.h>
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#include <asm/user32.h>
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#define COMPAT_USER_HZ 100
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@ -180,6 +181,11 @@ struct compat_shmid64_ds {
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compat_ulong_t __unused5;
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};
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/*
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* The type of struct elf_prstatus.pr_reg in compatible core dumps.
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*/
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typedef struct user_regs_struct32 compat_elf_gregset_t;
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/*
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* A pointer passed in from user mode. This should not
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* be used for syscall parameters, just declare them
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