1/* 2 * binfmt_elf32.c: Support 32-bit Sparc ELF binaries on Ultra. 3 * 4 * Copyright (C) 1995, 1996, 1997, 1998 David S. Miller (davem@redhat.com) 5 * Copyright (C) 1995, 1996, 1997, 1998 Jakub Jelinek (jj@ultra.linux.cz) 6 */ 7 8#define ELF_ARCH EM_SPARC 9#define ELF_CLASS ELFCLASS32 10#define ELF_DATA ELFDATA2MSB; 11 12/* For the most part we present code dumps in the format 13 * Solaris does. 14 */ 15typedef unsigned int elf_greg_t; 16#define ELF_NGREG 38 17typedef elf_greg_t elf_gregset_t[ELF_NGREG]; 18 19/* Format is: 20 * G0 --> G7 21 * O0 --> O7 22 * L0 --> L7 23 * I0 --> I7 24 * PSR, PC, nPC, Y, WIM, TBR 25 */ 26#include <asm/psrcompat.h> 27#define ELF_CORE_COPY_REGS(__elf_regs, __pt_regs) \ 28do { unsigned int *dest = &(__elf_regs[0]); \ 29 struct pt_regs *src = (__pt_regs); \ 30 unsigned int __user *sp; \ 31 int i; \ 32 for(i = 0; i < 16; i++) \ 33 dest[i] = (unsigned int) src->u_regs[i];\ 34 /* Don't try this at home kids... */ \ 35 sp = (unsigned int __user *) (src->u_regs[14] & \ 36 0x00000000fffffffc); \ 37 for(i = 0; i < 16; i++) \ 38 __get_user(dest[i+16], &sp[i]); \ 39 dest[32] = tstate_to_psr(src->tstate); \ 40 dest[33] = (unsigned int) src->tpc; \ 41 dest[34] = (unsigned int) src->tnpc; \ 42 dest[35] = src->y; \ 43 dest[36] = dest[37] = 0; \ 44} while(0); 45 46typedef struct { 47 union { 48 unsigned int pr_regs[32]; 49 unsigned long pr_dregs[16]; 50 } pr_fr; 51 unsigned int __unused; 52 unsigned int pr_fsr; 53 unsigned char pr_qcnt; 54 unsigned char pr_q_entrysize; 55 unsigned char pr_en; 56 unsigned int pr_q[64]; 57} elf_fpregset_t; 58 59/* UltraSparc extensions. Still unused, but will be eventually. */ 60typedef struct { 61 unsigned int pr_type; 62 unsigned int pr_align; 63 union { 64 struct { 65 union { 66 unsigned int pr_regs[32]; 67 unsigned long pr_dregs[16]; 68 long double pr_qregs[8]; 69 } pr_xfr; 70 } pr_v8p; 71 unsigned int pr_xfsr; 72 unsigned int pr_fprs; 73 unsigned int pr_xg[8]; 74 unsigned int pr_xo[8]; 75 unsigned long pr_tstate; 76 unsigned int pr_filler[8]; 77 } pr_un; 78} elf_xregset_t; 79 80#define elf_check_arch(x) (((x)->e_machine == EM_SPARC) || ((x)->e_machine == EM_SPARC32PLUS)) 81 82#define ELF_ET_DYN_BASE 0x70000000 83 84 85#include <asm/processor.h> 86#include <linux/module.h> 87#include <linux/elfcore.h> 88#include <linux/compat.h> 89 90#define elf_prstatus elf_prstatus32 91struct elf_prstatus32 92{ 93 struct elf_siginfo pr_info; /* Info associated with signal */ 94 short pr_cursig; /* Current signal */ 95 unsigned int pr_sigpend; /* Set of pending signals */ 96 unsigned int pr_sighold; /* Set of held signals */ 97 pid_t pr_pid; 98 pid_t pr_ppid; 99 pid_t pr_pgrp; 100 pid_t pr_sid; 101 struct compat_timeval pr_utime; /* User time */ 102 struct compat_timeval pr_stime; /* System time */ 103 struct compat_timeval pr_cutime; /* Cumulative user time */ 104 struct compat_timeval pr_cstime; /* Cumulative system time */ 105 elf_gregset_t pr_reg; /* GP registers */ 106 int pr_fpvalid; /* True if math co-processor being used. */ 107}; 108 109#define elf_prpsinfo elf_prpsinfo32 110struct elf_prpsinfo32 111{ 112 char pr_state; /* numeric process state */ 113 char pr_sname; /* char for pr_state */ 114 char pr_zomb; /* zombie */ 115 char pr_nice; /* nice val */ 116 unsigned int pr_flag; /* flags */ 117 u16 pr_uid; 118 u16 pr_gid; 119 pid_t pr_pid, pr_ppid, pr_pgrp, pr_sid; 120 /* Lots missing */ 121 char pr_fname[16]; /* filename of executable */ 122 char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */ 123}; 124 125#include <linux/highuid.h> 126 127#undef NEW_TO_OLD_UID 128#undef NEW_TO_OLD_GID 129#define NEW_TO_OLD_UID(uid) ((uid) > 65535) ? (u16)overflowuid : (u16)(uid) 130#define NEW_TO_OLD_GID(gid) ((gid) > 65535) ? (u16)overflowgid : (u16)(gid) 131 132#include <linux/time.h> 133 134#undef cputime_to_timeval 135#define cputime_to_timeval cputime_to_compat_timeval 136static __inline__ void 137cputime_to_compat_timeval(const cputime_t cputime, struct compat_timeval *value) 138{ 139 unsigned long jiffies = cputime_to_jiffies(cputime); 140 value->tv_usec = (jiffies % HZ) * (1000000L / HZ); 141 value->tv_sec = jiffies / HZ; 142} 143 144#undef start_thread 145#define start_thread start_thread32 146#define init_elf_binfmt init_elf32_binfmt 147 148MODULE_DESCRIPTION("Binary format loader for compatibility with 32bit SparcLinux binaries on the Ultra"); 149MODULE_AUTHOR("Eric Youngdale, David S. Miller, Jakub Jelinek"); 150 151#undef MODULE_DESCRIPTION 152#undef MODULE_AUTHOR 153 154#include <asm/a.out.h> 155 156#undef TASK_SIZE 157#define TASK_SIZE STACK_TOP32 158 159#include "../../../fs/binfmt_elf.c" 160