161 lines
4.3 KiB
C
161 lines
4.3 KiB
C
/*
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* binfmt_elf32.c: Support 32-bit Sparc ELF binaries on Ultra.
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*
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* Copyright (C) 1995, 1996, 1997, 1998 David S. Miller (davem@redhat.com)
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* Copyright (C) 1995, 1996, 1997, 1998 Jakub Jelinek (jj@ultra.linux.cz)
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*/
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#define ELF_ARCH EM_SPARC
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#define ELF_CLASS ELFCLASS32
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#define ELF_DATA ELFDATA2MSB;
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/* For the most part we present code dumps in the format
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* Solaris does.
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*/
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typedef unsigned int elf_greg_t;
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#define ELF_NGREG 38
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typedef elf_greg_t elf_gregset_t[ELF_NGREG];
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/* Format is:
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* G0 --> G7
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* O0 --> O7
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* L0 --> L7
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* I0 --> I7
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* PSR, PC, nPC, Y, WIM, TBR
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*/
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#include <asm/psrcompat.h>
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#define ELF_CORE_COPY_REGS(__elf_regs, __pt_regs) \
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do { unsigned int *dest = &(__elf_regs[0]); \
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struct pt_regs *src = (__pt_regs); \
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unsigned int __user *sp; \
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int i; \
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for(i = 0; i < 16; i++) \
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dest[i] = (unsigned int) src->u_regs[i];\
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/* Don't try this at home kids... */ \
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sp = (unsigned int __user *) (src->u_regs[14] & \
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0x00000000fffffffc); \
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for(i = 0; i < 16; i++) \
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__get_user(dest[i+16], &sp[i]); \
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dest[32] = tstate_to_psr(src->tstate); \
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dest[33] = (unsigned int) src->tpc; \
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dest[34] = (unsigned int) src->tnpc; \
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dest[35] = src->y; \
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dest[36] = dest[37] = 0; /* XXX */ \
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} while(0);
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typedef struct {
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union {
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unsigned int pr_regs[32];
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unsigned long pr_dregs[16];
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} pr_fr;
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unsigned int __unused;
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unsigned int pr_fsr;
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unsigned char pr_qcnt;
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unsigned char pr_q_entrysize;
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unsigned char pr_en;
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unsigned int pr_q[64];
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} elf_fpregset_t;
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/* UltraSparc extensions. Still unused, but will be eventually. */
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typedef struct {
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unsigned int pr_type;
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unsigned int pr_align;
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union {
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struct {
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union {
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unsigned int pr_regs[32];
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unsigned long pr_dregs[16];
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long double pr_qregs[8];
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} pr_xfr;
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} pr_v8p;
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unsigned int pr_xfsr;
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unsigned int pr_fprs;
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unsigned int pr_xg[8];
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unsigned int pr_xo[8];
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unsigned long pr_tstate;
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unsigned int pr_filler[8];
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} pr_un;
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} elf_xregset_t;
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#define elf_check_arch(x) (((x)->e_machine == EM_SPARC) || ((x)->e_machine == EM_SPARC32PLUS))
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#define ELF_ET_DYN_BASE 0x70000000
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#include <asm/processor.h>
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#include <linux/module.h>
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#include <linux/elfcore.h>
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#include <linux/compat.h>
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#define elf_prstatus elf_prstatus32
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struct elf_prstatus32
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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_prpsinfo elf_prpsinfo32
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struct elf_prpsinfo32
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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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#include <linux/highuid.h>
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#undef NEW_TO_OLD_UID
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#undef NEW_TO_OLD_GID
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#define NEW_TO_OLD_UID(uid) ((uid) > 65535) ? (u16)overflowuid : (u16)(uid)
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#define NEW_TO_OLD_GID(gid) ((gid) > 65535) ? (u16)overflowgid : (u16)(gid)
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#include <linux/time.h>
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#undef cputime_to_timeval
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#define cputime_to_timeval cputime_to_compat_timeval
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static __inline__ void
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cputime_to_compat_timeval(const cputime_t cputime, struct compat_timeval *value)
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{
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unsigned long jiffies = cputime_to_jiffies(cputime);
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value->tv_usec = (jiffies % HZ) * (1000000L / HZ);
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value->tv_sec = jiffies / HZ;
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}
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#define elf_addr_t u32
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#undef start_thread
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#define start_thread start_thread32
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#define init_elf_binfmt init_elf32_binfmt
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MODULE_DESCRIPTION("Binary format loader for compatibility with 32bit SparcLinux binaries on the Ultra");
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MODULE_AUTHOR("Eric Youngdale, David S. Miller, Jakub Jelinek");
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#undef MODULE_DESCRIPTION
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#undef MODULE_AUTHOR
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#include <asm/a.out.h>
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#undef TASK_SIZE
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#define TASK_SIZE STACK_TOP32
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#include "../../../fs/binfmt_elf.c"
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