1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
126 lines
4.1 KiB
C
126 lines
4.1 KiB
C
/*
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* Support for 32-bit Linux/Parisc ELF binaries on 64 bit kernels
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*
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* Copyright (C) 2000 John Marvin
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* Copyright (C) 2000 Hewlett Packard Co.
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*
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* Heavily inspired from various other efforts to do the same thing
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* (ia64,sparc64/mips64)
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*/
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/* Make sure include/asm-parisc/elf.h does the right thing */
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#define ELF_CLASS ELFCLASS32
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#define ELF_CORE_COPY_REGS(dst, pt) \
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memset(dst, 0, sizeof(dst)); /* don't leak any "random" bits */ \
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{ int i; \
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for (i = 0; i < 32; i++) dst[i] = (elf_greg_t) pt->gr[i]; \
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for (i = 0; i < 8; i++) dst[32 + i] = (elf_greg_t) pt->sr[i]; \
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} \
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dst[40] = (elf_greg_t) pt->iaoq[0]; dst[41] = (elf_greg_t) pt->iaoq[1]; \
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dst[42] = (elf_greg_t) pt->iasq[0]; dst[43] = (elf_greg_t) pt->iasq[1]; \
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dst[44] = (elf_greg_t) pt->sar; dst[45] = (elf_greg_t) pt->iir; \
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dst[46] = (elf_greg_t) pt->isr; dst[47] = (elf_greg_t) pt->ior; \
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dst[48] = (elf_greg_t) mfctl(22); dst[49] = (elf_greg_t) mfctl(0); \
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dst[50] = (elf_greg_t) mfctl(24); dst[51] = (elf_greg_t) mfctl(25); \
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dst[52] = (elf_greg_t) mfctl(26); dst[53] = (elf_greg_t) mfctl(27); \
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dst[54] = (elf_greg_t) mfctl(28); dst[55] = (elf_greg_t) mfctl(29); \
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dst[56] = (elf_greg_t) mfctl(30); dst[57] = (elf_greg_t) mfctl(31); \
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dst[58] = (elf_greg_t) mfctl( 8); dst[59] = (elf_greg_t) mfctl( 9); \
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dst[60] = (elf_greg_t) mfctl(12); dst[61] = (elf_greg_t) mfctl(13); \
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dst[62] = (elf_greg_t) mfctl(10); dst[63] = (elf_greg_t) mfctl(15);
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typedef unsigned int elf_greg_t;
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#include <linux/spinlock.h>
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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> /* struct compat_timeval */
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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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#define elf_addr_t unsigned int
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#define init_elf_binfmt init_elf32_binfmt
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#define ELF_PLATFORM ("PARISC32\0")
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/*
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* We should probably use this macro to set a flag somewhere to indicate
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* this is a 32 on 64 process. We could use PER_LINUX_32BIT, or we
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* could set a processor dependent flag in the thread_struct.
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*/
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#define SET_PERSONALITY(ex, ibcs2) \
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current->personality = PER_LINUX32; \
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current->thread.map_base = DEFAULT_MAP_BASE32; \
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current->thread.task_size = DEFAULT_TASK_SIZE32 \
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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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#include "../../../fs/binfmt_elf.c"
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/* Set up a separate execution domain for ELF32 binaries running
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* on an ELF64 kernel */
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static struct exec_domain parisc32_exec_domain = {
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.name = "Linux/ELF32",
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.pers_low = PER_LINUX32,
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.pers_high = PER_LINUX32,
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};
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static int __init parisc32_exec_init(void)
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{
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/* steal the identity signal mappings from the default domain */
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parisc32_exec_domain.signal_map = default_exec_domain.signal_map;
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parisc32_exec_domain.signal_invmap = default_exec_domain.signal_invmap;
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register_exec_domain(&parisc32_exec_domain);
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return 0;
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}
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__initcall(parisc32_exec_init);
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