freebsd-nq/usr.bin/gcore/elf32core.c
John Baldwin 51645e836d Store a 32-bit PT_LWPINFO struct for 32-bit process core dumps.
Process core notes for a 32-bit process running on a 64-bit host need to
use 32-bit structures so that the note layout matches the layout of notes
of a core dump of a 32-bit process under a 32-bit kernel.

Reviewed by:	kib
Differential Revision:	https://reviews.freebsd.org/D11407
2017-06-29 21:31:13 +00:00

89 lines
2.0 KiB
C

/* $FreeBSD$ */
#ifndef __LP64__
#error "this file must be compiled for LP64."
#endif
#define __ELF_WORD_SIZE 32
#define _MACHINE_ELF_WANT_32BIT
#define _WANT_LWPINFO32
#include <sys/procfs.h>
#define ELFCORE_COMPAT_32 1
#include "elfcore.c"
static void
elf_convert_gregset(elfcore_gregset_t *rd, struct reg *rs)
{
#ifdef __amd64__
rd->r_gs = rs->r_gs;
rd->r_fs = rs->r_fs;
rd->r_es = rs->r_es;
rd->r_ds = rs->r_ds;
rd->r_edi = rs->r_rdi;
rd->r_esi = rs->r_rsi;
rd->r_ebp = rs->r_rbp;
rd->r_ebx = rs->r_rbx;
rd->r_edx = rs->r_rdx;
rd->r_ecx = rs->r_rcx;
rd->r_eax = rs->r_rax;
rd->r_eip = rs->r_rip;
rd->r_cs = rs->r_cs;
rd->r_eflags = rs->r_rflags;
rd->r_esp = rs->r_rsp;
rd->r_ss = rs->r_ss;
#else
#error Unsupported architecture
#endif
}
static void
elf_convert_fpregset(elfcore_fpregset_t *rd, struct fpreg *rs)
{
#ifdef __amd64__
/* XXX this is wrong... */
memcpy(rd, rs, sizeof(*rd));
#else
#error Unsupported architecture
#endif
}
static void
elf_convert_siginfo(struct siginfo32 *sid, siginfo_t *sis)
{
bzero(sid, sizeof(*sid));
sid->si_signo = sis->si_signo;
sid->si_errno = sis->si_errno;
sid->si_code = sis->si_code;
sid->si_pid = sis->si_pid;
sid->si_uid = sis->si_uid;
sid->si_status = sis->si_status;
sid->si_addr = (uintptr_t)sis->si_addr;
#if _BYTE_ORDER == _BIG_ENDIAN
if (sis->si_value.sival_int == 0)
sid->si_value.sival_ptr = (uintptr_t)sis->si_value.sival_ptr;
else
#endif
sid->si_value.sival_int = sis->si_value.sival_int;
sid->si_timerid = sis->si_timerid;
sid->si_overrun = sis->si_overrun;
}
static void
elf_convert_lwpinfo(struct ptrace_lwpinfo32 *pld, struct ptrace_lwpinfo *pls)
{
pld->pl_lwpid = pls->pl_lwpid;
pld->pl_event = pls->pl_event;
pld->pl_flags = pls->pl_flags;
pld->pl_sigmask = pls->pl_sigmask;
pld->pl_siglist = pls->pl_siglist;
elf_convert_siginfo(&pld->pl_siginfo, &pls->pl_siginfo);
memcpy(pld->pl_tdname, pls->pl_tdname, sizeof(pld->pl_tdname));
pld->pl_child_pid = pls->pl_child_pid;
pld->pl_syscall_code = pls->pl_syscall_code;
pld->pl_syscall_narg = pls->pl_syscall_narg;
}