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/*
* Support for 32-bit Linux/Parisc ELF binaries on 64 bit kernels
*
* Copyright (C) 2000 John Marvin
* Copyright (C) 2000 Hewlett Packard Co.
*
* Heavily inspired from various other efforts to do the same thing
* (ia64,sparc64/mips64)
*/
/* Make sure include/asm-parisc/elf.h does the right thing */
#define ELF_CLASS ELFCLASS32
#define ELF_CORE_COPY_REGS(dst, pt) \
memset(dst, 0, sizeof(dst)); /* don't leak any "random" bits */ \
{ int i; \
for (i = 0; i < 32; i++) dst[i] = (elf_greg_t) pt->gr[i]; \
for (i = 0; i < 8; i++) dst[32 + i] = (elf_greg_t) pt->sr[i]; \
} \
dst[40] = (elf_greg_t) pt->iaoq[0]; dst[41] = (elf_greg_t) pt->iaoq[1]; \
dst[42] = (elf_greg_t) pt->iasq[0]; dst[43] = (elf_greg_t) pt->iasq[1]; \
dst[44] = (elf_greg_t) pt->sar; dst[45] = (elf_greg_t) pt->iir; \
dst[46] = (elf_greg_t) pt->isr; dst[47] = (elf_greg_t) pt->ior; \
dst[48] = (elf_greg_t) mfctl(22); dst[49] = (elf_greg_t) mfctl(0); \
dst[50] = (elf_greg_t) mfctl(24); dst[51] = (elf_greg_t) mfctl(25); \
dst[52] = (elf_greg_t) mfctl(26); dst[53] = (elf_greg_t) mfctl(27); \
dst[54] = (elf_greg_t) mfctl(28); dst[55] = (elf_greg_t) mfctl(29); \
dst[56] = (elf_greg_t) mfctl(30); dst[57] = (elf_greg_t) mfctl(31); \
dst[58] = (elf_greg_t) mfctl( 8); dst[59] = (elf_greg_t) mfctl( 9); \
dst[60] = (elf_greg_t) mfctl(12); dst[61] = (elf_greg_t) mfctl(13); \
dst[62] = (elf_greg_t) mfctl(10); dst[63] = (elf_greg_t) mfctl(15);
typedef unsigned int elf_greg_t;
#include <linux/spinlock.h>
#include <asm/processor.h>
#include <linux/module.h>
#include <linux/elfcore.h>
#include <linux/compat.h> /* struct compat_timeval */
#define elf_prstatus elf_prstatus32
struct elf_prstatus32
{
struct elf_siginfo pr_info; /* Info associated with signal */
short pr_cursig; /* Current signal */
unsigned int pr_sigpend; /* Set of pending signals */
unsigned int pr_sighold; /* Set of held signals */
pid_t pr_pid;
pid_t pr_ppid;
pid_t pr_pgrp;
pid_t pr_sid;
struct compat_timeval pr_utime; /* User time */
struct compat_timeval pr_stime; /* System time */
struct compat_timeval pr_cutime; /* Cumulative user time */
struct compat_timeval pr_cstime; /* Cumulative system time */
elf_gregset_t pr_reg; /* GP registers */
int pr_fpvalid; /* True if math co-processor being used. */
};
#define elf_prpsinfo elf_prpsinfo32
struct elf_prpsinfo32
{
char pr_state; /* numeric process state */
char pr_sname; /* char for pr_state */
char pr_zomb; /* zombie */
char pr_nice; /* nice val */
unsigned int pr_flag; /* flags */
u16 pr_uid;
u16 pr_gid;
pid_t pr_pid, pr_ppid, pr_pgrp, pr_sid;
/* Lots missing */
char pr_fname[16]; /* filename of executable */
char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */
};
#define elf_addr_t unsigned int
#define init_elf_binfmt init_elf32_binfmt
#define ELF_PLATFORM ("PARISC32\0")
/*
* We should probably use this macro to set a flag somewhere to indicate
* this is a 32 on 64 process. We could use PER_LINUX_32BIT, or we
* could set a processor dependent flag in the thread_struct.
*/
#define SET_PERSONALITY(ex, ibcs2) \
current->personality = PER_LINUX32; \
current->thread.map_base = DEFAULT_MAP_BASE32; \
current->thread.task_size = DEFAULT_TASK_SIZE32 \
#undef cputime_to_timeval
#define cputime_to_timeval cputime_to_compat_timeval
static __inline__ void
cputime_to_compat_timeval(const cputime_t cputime, struct compat_timeval *value)
{
unsigned long jiffies = cputime_to_jiffies(cputime);
value->tv_usec = (jiffies % HZ) * (1000000L / HZ);
value->tv_sec = jiffies / HZ;
}
#include "../../../fs/binfmt_elf.c"
/* Set up a separate execution domain for ELF32 binaries running
* on an ELF64 kernel */
static struct exec_domain parisc32_exec_domain = {
.name = "Linux/ELF32",
.pers_low = PER_LINUX32,
.pers_high = PER_LINUX32,
};
static int __init parisc32_exec_init(void)
{
/* steal the identity signal mappings from the default domain */
parisc32_exec_domain.signal_map = default_exec_domain.signal_map;
parisc32_exec_domain.signal_invmap = default_exec_domain.signal_invmap;
register_exec_domain(&parisc32_exec_domain);
return 0;
}
__initcall(parisc32_exec_init);
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