1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Support for 32-bit Linux/Parisc ELF binaries on 64 bit kernels 4 * 5 * Copyright (C) 2000 John Marvin 6 * Copyright (C) 2000 Hewlett Packard Co. 7 * 8 * Heavily inspired from various other efforts to do the same thing 9 * (ia64,sparc64/mips64) 10 */ 11 12 /* Make sure include/asm-parisc/elf.h does the right thing */ 13 14 #define ELF_CLASS ELFCLASS32 15 16 #define ELF_CORE_COPY_REGS(dst, pt) \ 17 memset(dst, 0, sizeof(dst)); /* don't leak any "random" bits */ \ 18 { int i; \ 19 for (i = 0; i < 32; i++) dst[i] = (elf_greg_t) pt->gr[i]; \ 20 for (i = 0; i < 8; i++) dst[32 + i] = (elf_greg_t) pt->sr[i]; \ 21 } \ 22 dst[40] = (elf_greg_t) pt->iaoq[0]; dst[41] = (elf_greg_t) pt->iaoq[1]; \ 23 dst[42] = (elf_greg_t) pt->iasq[0]; dst[43] = (elf_greg_t) pt->iasq[1]; \ 24 dst[44] = (elf_greg_t) pt->sar; dst[45] = (elf_greg_t) pt->iir; \ 25 dst[46] = (elf_greg_t) pt->isr; dst[47] = (elf_greg_t) pt->ior; \ 26 dst[48] = (elf_greg_t) mfctl(22); dst[49] = (elf_greg_t) mfctl(0); \ 27 dst[50] = (elf_greg_t) mfctl(24); dst[51] = (elf_greg_t) mfctl(25); \ 28 dst[52] = (elf_greg_t) mfctl(26); dst[53] = (elf_greg_t) mfctl(27); \ 29 dst[54] = (elf_greg_t) mfctl(28); dst[55] = (elf_greg_t) mfctl(29); \ 30 dst[56] = (elf_greg_t) mfctl(30); dst[57] = (elf_greg_t) mfctl(31); \ 31 dst[58] = (elf_greg_t) mfctl( 8); dst[59] = (elf_greg_t) mfctl( 9); \ 32 dst[60] = (elf_greg_t) mfctl(12); dst[61] = (elf_greg_t) mfctl(13); \ 33 dst[62] = (elf_greg_t) mfctl(10); dst[63] = (elf_greg_t) mfctl(15); 34 35 36 typedef unsigned int elf_greg_t; 37 38 #include <linux/spinlock.h> 39 #include <asm/processor.h> 40 #include <linux/module.h> 41 #include <linux/elfcore.h> 42 #include <linux/compat.h> /* struct compat_timeval */ 43 44 #define elf_prstatus elf_prstatus32 45 struct elf_prstatus32 46 { 47 struct elf_siginfo pr_info; /* Info associated with signal */ 48 short pr_cursig; /* Current signal */ 49 unsigned int pr_sigpend; /* Set of pending signals */ 50 unsigned int pr_sighold; /* Set of held signals */ 51 pid_t pr_pid; 52 pid_t pr_ppid; 53 pid_t pr_pgrp; 54 pid_t pr_sid; 55 struct compat_timeval pr_utime; /* User time */ 56 struct compat_timeval pr_stime; /* System time */ 57 struct compat_timeval pr_cutime; /* Cumulative user time */ 58 struct compat_timeval pr_cstime; /* Cumulative system time */ 59 elf_gregset_t pr_reg; /* GP registers */ 60 int pr_fpvalid; /* True if math co-processor being used. */ 61 }; 62 63 #define elf_prpsinfo elf_prpsinfo32 64 struct elf_prpsinfo32 65 { 66 char pr_state; /* numeric process state */ 67 char pr_sname; /* char for pr_state */ 68 char pr_zomb; /* zombie */ 69 char pr_nice; /* nice val */ 70 unsigned int pr_flag; /* flags */ 71 u16 pr_uid; 72 u16 pr_gid; 73 pid_t pr_pid, pr_ppid, pr_pgrp, pr_sid; 74 /* Lots missing */ 75 char pr_fname[16]; /* filename of executable */ 76 char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */ 77 }; 78 79 #define init_elf_binfmt init_elf32_binfmt 80 81 #define ELF_PLATFORM ("PARISC32\0") 82 83 /* 84 * We should probably use this macro to set a flag somewhere to indicate 85 * this is a 32 on 64 process. We could use PER_LINUX_32BIT, or we 86 * could set a processor dependent flag in the thread_struct. 87 */ 88 89 #undef SET_PERSONALITY 90 #define SET_PERSONALITY(ex) \ 91 set_thread_flag(TIF_32BIT); \ 92 current->thread.map_base = DEFAULT_MAP_BASE32; \ 93 current->thread.task_size = DEFAULT_TASK_SIZE32 \ 94 95 #undef ns_to_timeval 96 #define ns_to_timeval ns_to_compat_timeval 97 98 #include "../../../fs/binfmt_elf.c" 99