1/* 2 * Support for 32-bit Linux/Parisc ELF binaries on 64 bit kernels 3 * 4 * Copyright (C) 2000 John Marvin 5 * Copyright (C) 2000 Hewlett Packard Co. 6 * 7 * Heavily inspired from various other efforts to do the same thing 8 * (ia64,sparc64/mips64) 9 */ 10 11/* Make sure include/asm-parisc/elf.h does the right thing */ 12 13#define ELF_CLASS ELFCLASS32 14 15#define ELF_CORE_COPY_REGS(dst, pt) \ 16 memset(dst, 0, sizeof(dst)); /* don't leak any "random" bits */ \ 17 { int i; \ 18 for (i = 0; i < 32; i++) dst[i] = (elf_greg_t) pt->gr[i]; \ 19 for (i = 0; i < 8; i++) dst[32 + i] = (elf_greg_t) pt->sr[i]; \ 20 } \ 21 dst[40] = (elf_greg_t) pt->iaoq[0]; dst[41] = (elf_greg_t) pt->iaoq[1]; \ 22 dst[42] = (elf_greg_t) pt->iasq[0]; dst[43] = (elf_greg_t) pt->iasq[1]; \ 23 dst[44] = (elf_greg_t) pt->sar; dst[45] = (elf_greg_t) pt->iir; \ 24 dst[46] = (elf_greg_t) pt->isr; dst[47] = (elf_greg_t) pt->ior; \ 25 dst[48] = (elf_greg_t) mfctl(22); dst[49] = (elf_greg_t) mfctl(0); \ 26 dst[50] = (elf_greg_t) mfctl(24); dst[51] = (elf_greg_t) mfctl(25); \ 27 dst[52] = (elf_greg_t) mfctl(26); dst[53] = (elf_greg_t) mfctl(27); \ 28 dst[54] = (elf_greg_t) mfctl(28); dst[55] = (elf_greg_t) mfctl(29); \ 29 dst[56] = (elf_greg_t) mfctl(30); dst[57] = (elf_greg_t) mfctl(31); \ 30 dst[58] = (elf_greg_t) mfctl( 8); dst[59] = (elf_greg_t) mfctl( 9); \ 31 dst[60] = (elf_greg_t) mfctl(12); dst[61] = (elf_greg_t) mfctl(13); \ 32 dst[62] = (elf_greg_t) mfctl(10); dst[63] = (elf_greg_t) mfctl(15); 33 34 35typedef unsigned int elf_greg_t; 36 37#include <linux/spinlock.h> 38#include <asm/processor.h> 39#include <linux/module.h> 40#include <linux/elfcore.h> 41#include <linux/compat.h> /* struct compat_timeval */ 42 43#define elf_prstatus elf_prstatus32 44struct elf_prstatus32 45{ 46 struct elf_siginfo pr_info; /* Info associated with signal */ 47 short pr_cursig; /* Current signal */ 48 unsigned int pr_sigpend; /* Set of pending signals */ 49 unsigned int pr_sighold; /* Set of held signals */ 50 pid_t pr_pid; 51 pid_t pr_ppid; 52 pid_t pr_pgrp; 53 pid_t pr_sid; 54 struct compat_timeval pr_utime; /* User time */ 55 struct compat_timeval pr_stime; /* System time */ 56 struct compat_timeval pr_cutime; /* Cumulative user time */ 57 struct compat_timeval pr_cstime; /* Cumulative system time */ 58 elf_gregset_t pr_reg; /* GP registers */ 59 int pr_fpvalid; /* True if math co-processor being used. */ 60}; 61 62#define elf_prpsinfo elf_prpsinfo32 63struct elf_prpsinfo32 64{ 65 char pr_state; /* numeric process state */ 66 char pr_sname; /* char for pr_state */ 67 char pr_zomb; /* zombie */ 68 char pr_nice; /* nice val */ 69 unsigned int pr_flag; /* flags */ 70 u16 pr_uid; 71 u16 pr_gid; 72 pid_t pr_pid, pr_ppid, pr_pgrp, pr_sid; 73 /* Lots missing */ 74 char pr_fname[16]; /* filename of executable */ 75 char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */ 76}; 77 78#define init_elf_binfmt init_elf32_binfmt 79 80#define ELF_PLATFORM ("PARISC32\0") 81 82/* 83 * We should probably use this macro to set a flag somewhere to indicate 84 * this is a 32 on 64 process. We could use PER_LINUX_32BIT, or we 85 * could set a processor dependent flag in the thread_struct. 86 */ 87 88#undef SET_PERSONALITY 89#define SET_PERSONALITY(ex) \ 90 set_thread_flag(TIF_32BIT); \ 91 current->thread.map_base = DEFAULT_MAP_BASE32; \ 92 current->thread.task_size = DEFAULT_TASK_SIZE32 \ 93 94#undef cputime_to_timeval 95#define cputime_to_timeval cputime_to_compat_timeval 96static __inline__ void 97cputime_to_compat_timeval(const cputime_t cputime, struct compat_timeval *value) 98{ 99 unsigned long jiffies = cputime_to_jiffies(cputime); 100 value->tv_usec = (jiffies % HZ) * (1000000L / HZ); 101 value->tv_sec = jiffies / HZ; 102} 103 104#include "../../../fs/binfmt_elf.c" 105