syscall.c

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/***************************************************************************
                          syscall.c  -  description
                             -------------------
    begin                : Wed Sep 26 2001
    copyright            : (C) 2001 Universite Paris Sud and CEA
    author               : Gilles Mouchard
    email                : [e-mail], [e-mail]
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

#ifdef linux
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#endif

#include <syscall.h>
#include <ppcemul.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/times.h>
#include <xmlize.h>

#define __SYSCALL_exit		  1
#define __SYSCALL_fork		  2
#define __SYSCALL_read		  3
#define __SYSCALL_write		  4
#define __SYSCALL_open		  5
#define __SYSCALL_close		  6
#define __SYSCALL_waitpid		  7
#define __SYSCALL_creat		  8
#define __SYSCALL_link		  9
#define __SYSCALL_unlink		 10
#define __SYSCALL_execve		 11
#define __SYSCALL_chdir		 12
#define __SYSCALL_time		 13
#define __SYSCALL_mknod		 14
#define __SYSCALL_chmod		 15
#define __SYSCALL_lchown		 16
#define __SYSCALL_break		 17
#define __SYSCALL_oldstat		 18
#define __SYSCALL_lseek		 19
#define __SYSCALL_getpid		 20
#define __SYSCALL_mount		 21
#define __SYSCALL_umount		 22
#define __SYSCALL_setuid		 23
#define __SYSCALL_getuid		 24
#define __SYSCALL_stime		 25
#define __SYSCALL_ptrace		 26
#define __SYSCALL_alarm		 27
#define __SYSCALL_oldfstat		 28
#define __SYSCALL_pause		 29
#define __SYSCALL_utime		 30
#define __SYSCALL_stty		 31
#define __SYSCALL_gtty		 32
#define __SYSCALL_access		 33
#define __SYSCALL_nice		 34
#define __SYSCALL_ftime		 35
#define __SYSCALL_sync		 36
#define __SYSCALL_kill		 37
#define __SYSCALL_rename		 38
#define __SYSCALL_mkdir		 39
#define __SYSCALL_rmdir		 40
#define __SYSCALL_dup		 41
#define __SYSCALL_pipe		 42
#define __SYSCALL_times		 43
#define __SYSCALL_prof		 44
#define __SYSCALL_brk		 45
#define __SYSCALL_setgid		 46
#define __SYSCALL_getgid		 47
#define __SYSCALL_signal		 48
#define __SYSCALL_geteuid		 49
#define __SYSCALL_getegid		 50
#define __SYSCALL_acct		 51
#define __SYSCALL_umount2		 52
#define __SYSCALL_lock		 53
#define __SYSCALL_ioctl		 54
#define __SYSCALL_fcntl		 55
#define __SYSCALL_mpx		 56
#define __SYSCALL_setpgid		 57
#define __SYSCALL_ulimit		 58
#define __SYSCALL_oldolduname	 59
#define __SYSCALL_umask		 60
#define __SYSCALL_chroot		 61
#define __SYSCALL_ustat		 62
#define __SYSCALL_dup2		 63
#define __SYSCALL_getppid		 64
#define __SYSCALL_getpgrp		 65
#define __SYSCALL_setsid		 66
#define __SYSCALL_sigaction		 67
#define __SYSCALL_sgetmask		 68
#define __SYSCALL_ssetmask		 69
#define __SYSCALL_setreuid		 70
#define __SYSCALL_setregid		 71
#define __SYSCALL_sigsuspend		 72
#define __SYSCALL_sigpending		 73
#define __SYSCALL_sethostname	 74
#define __SYSCALL_setrlimit		 75
#define __SYSCALL_getrlimit		 76
#define __SYSCALL_getrusage		 77
#define __SYSCALL_gettimeofday	 78
#define __SYSCALL_settimeofday	 79
#define __SYSCALL_getgroups		 80
#define __SYSCALL_setgroups		 81
#define __SYSCALL_select		 82
#define __SYSCALL_symlink		 83
#define __SYSCALL_oldlstat		 84
#define __SYSCALL_readlink		 85
#define __SYSCALL_uselib		 86
#define __SYSCALL_swapon		 87
#define __SYSCALL_reboot		 88
#define __SYSCALL_readdir		 89
#define __SYSCALL_mmap		 90
#define __SYSCALL_munmap		 91
#define __SYSCALL_truncate		 92
#define __SYSCALL_ftruncate		 93
#define __SYSCALL_fchmod		 94
#define __SYSCALL_fchown		 95
#define __SYSCALL_getpriority	 96
#define __SYSCALL_setpriority	 97
#define __SYSCALL_profil		 98
#define __SYSCALL_statfs		 99
#define __SYSCALL_fstatfs		100
#define __SYSCALL_ioperm		101
#define __SYSCALL_socketcall		102
#define __SYSCALL_syslog		103
#define __SYSCALL_setitimer		104
#define __SYSCALL_getitimer		105
#define __SYSCALL_stat		106
#define __SYSCALL_lstat		107
#define __SYSCALL_fstat		108
#define __SYSCALL_olduname		109
#define __SYSCALL_iopl		110
#define __SYSCALL_vhangup		111
#define __SYSCALL_idle		112
#define __SYSCALL_vm86old		113
#define __SYSCALL_wait4		114
#define __SYSCALL_swapoff		115
#define __SYSCALL_sysinfo		116
#define __SYSCALL_ipc		117
#define __SYSCALL_fsync		118
#define __SYSCALL_sigreturn		119
#define __SYSCALL_clone		120
#define __SYSCALL_setdomainname	121
#define __SYSCALL_uname		122
#define __SYSCALL_modify_ldt		123
#define __SYSCALL_adjtimex		124
#define __SYSCALL_mprotect		125
#define __SYSCALL_sigprocmask	126
#define __SYSCALL_create_module	127
#define __SYSCALL_init_module	128
#define __SYSCALL_delete_module	129
#define __SYSCALL_get_kernel_syms	130
#define __SYSCALL_quotactl		131
#define __SYSCALL_getpgid		132
#define __SYSCALL_fchdir		133
#define __SYSCALL_bdflush		134
#define __SYSCALL_sysfs		135
#define __SYSCALL_personality	136
#define __SYSCALL_afs_syscall	137
#define __SYSCALL_setfsuid		138
#define __SYSCALL_setfsgid		139
#define __SYSCALL__llseek		140
#define __SYSCALL_getdents		141
#define __SYSCALL__newselect		142
#define __SYSCALL_flock		143
#define __SYSCALL_msync		144
#define __SYSCALL_readv		145
#define __SYSCALL_writev		146
#define __SYSCALL_getsid		147
#define __SYSCALL_fdatasync		148
#define __SYSCALL__sysctl		149
#define __SYSCALL_mlock		150
#define __SYSCALL_munlock		151
#define __SYSCALL_mlockall		152
#define __SYSCALL_munlockall		153
#define __SYSCALL_sched_setparam		154
#define __SYSCALL_sched_getparam		155
#define __SYSCALL_sched_setscheduler		156
#define __SYSCALL_sched_getscheduler		157
#define __SYSCALL_sched_yield		158
#define __SYSCALL_sched_get_priority_max	159
#define __SYSCALL_sched_get_priority_min	160
#define __SYSCALL_sched_rr_get_interval	161
#define __SYSCALL_nanosleep		162
#define __SYSCALL_mremap		163
#define __SYSCALL_setresuid		164
#define __SYSCALL_getresuid		165
#define __SYSCALL_vm86		166
#define __SYSCALL_query_module	167
#define __SYSCALL_poll		168
#define __SYSCALL_nfsservctl		169
#define __SYSCALL_setresgid		170
#define __SYSCALL_getresgid		171
#define __SYSCALL_prctl              172
#define __SYSCALL_rt_sigreturn	173
#define __SYSCALL_rt_sigaction	174
#define __SYSCALL_rt_sigprocmask	175
#define __SYSCALL_rt_sigpending	176
#define __SYSCALL_rt_sigtimedwait	177
#define __SYSCALL_rt_sigqueueinfo	178
#define __SYSCALL_rt_sigsuspend	179
#define __SYSCALL_pread		180
#define __SYSCALL_pwrite		181
#define __SYSCALL_chown		182
#define __SYSCALL_getcwd		183
#define __SYSCALL_capget		184
#define __SYSCALL_capset		185
#define __SYSCALL_sigaltstack	186
#define __SYSCALL_sendfile		187
#define __SYSCALL_getpmsg		188
#define __SYSCALL_putpmsg		189
#define __SYSCALL_vfork		190
#define __SYSCALL_ugetrlimit		191
#define __SYSCALL_mmap2		192
#define __SYSCALL_truncate64		193
#define __SYSCALL_ftruncate64	194
#define __SYSCALL_stat64		195
#define __SYSCALL_lstat64		196
#define __SYSCALL_fstat64		197
#define __SYSCALL_lchown32		198
#define __SYSCALL_getuid32		199
#define __SYSCALL_getgid32		200
#define __SYSCALL_geteuid32		201
#define __SYSCALL_getegid32		202
#define __SYSCALL_setreuid32		203
#define __SYSCALL_setregid32		204
#define __SYSCALL_getgroups32	205
#define __SYSCALL_setgroups32	206
#define __SYSCALL_fchown32		207
#define __SYSCALL_setresuid32	208
#define __SYSCALL_getresuid32	209
#define __SYSCALL_setresgid32	210
#define __SYSCALL_getresgid32	211
#define __SYSCALL_chown32		212
#define __SYSCALL_setuid32		213
#define __SYSCALL_setgid32		214
#define __SYSCALL_setfsuid32		215
#define __SYSCALL_setfsgid32		216
#define __SYSCALL_pivot_root		217
#define __SYSCALL_mincore		218
#define __SYSCALL_madvise		219
#define __SYSCALL_getdents64		220
#define __SYSCALL_fcntl64		221

extern BOOL debuging;

static addr_t brk_point = 0;
static BOOL swap = FALSE;
static BOOL verbose = FALSE;
BOOL emulate_syscall = FALSE;
static syscall_cb_t syscall_cb;
static void (*exit_proc)(int) = NULL;

static void default_exit_proc(int code)
{
	exit(code);
}

static void cb_write_gpr(void *instance, int n, word_t value)
{
	my_regs.gpr[n] = value;
}

static word_t cb_read_gpr(void *instance, int n)
{
	return my_regs.gpr[n];
}

static void cb_set_cr0so(void *instance)
{
	my_regs.cr = my_regs.cr | 0x10000000;
}

static void cb_reset_cr0so(void *instance)
{
	my_regs.cr = my_regs.cr & 0xefffffff;
}

static void cb_mem_write_byte(void *instance, addr_t addr, byte_t value)
{
	mem_write_byte(mem, addr, value);
}

static byte_t cb_mem_read_byte(void *instance, addr_t addr)
{
	return mem_read_byte(mem, addr);
}

static void cb_mem_write_half_word(void *instance, addr_t addr, halfword_t value)
{
	mem_write_half_word(mem, addr, value);
}

static halfword_t cb_mem_read_half_word(void *instance, addr_t addr)
{
	return mem_read_half_word(mem, addr);
}

static void cb_mem_write_word(void *instance, addr_t addr, word_t value)
{
	mem_write_word(mem, addr, value);
}

static word_t cb_mem_read_word(void *instance, addr_t addr)
{
	return mem_read_word(mem, addr);
}

static void cb_mem_write_dword(void *instance, addr_t addr, dword_t value)
{
	mem_write_dword(mem, addr, value);
}

static dword_t cb_mem_read_dword(void *instance, addr_t addr)
{
	return mem_read_dword(mem, addr);
}

static void cb_mem_read(void *instance, void *buf, addr_t addr, int size)
{
	mem_read(mem, buf, addr, size);
}

static void cb_mem_write(void *instance, addr_t addr, void *buf, int size)
{
	mem_write(mem, addr, buf, size);
}

static void cb_mem_set(void *instance, addr_t addr, byte_t value, int size)
{
	mem_set(mem, addr, value, size);
}

static syscall_cb_t cb_default = {
	cb_write_gpr,
	cb_read_gpr,
	cb_reset_cr0so,
	cb_set_cr0so,
	cb_mem_read_byte,
	cb_mem_write_byte,
	cb_mem_read_half_word,
	cb_mem_write_half_word,
	cb_mem_read_word,
	cb_mem_write_word,
	cb_mem_read_dword,
	cb_mem_write_dword,
	cb_mem_set,
	cb_mem_read,
	cb_mem_write
};

void syscall_setcb(syscall_cb_t *cb)
{
	syscall_cb = cb ? *cb : cb_default;
}

void syscall_getcb(syscall_cb_t *cb)
{
	*cb = syscall_cb;
}

void syscall_init(syscall_cb_t *cb, BOOL _verbose, BOOL emulate, void (*_exit_proc)(int))
{
	int a = 0x1234;
	swap = *(unsigned char *) &a == 0x34;
	syscall_cb = cb ? *cb : cb_default;
	verbose = _verbose;
	emulate_syscall = emulate;
	exit_proc = _exit_proc ? _exit_proc : default_exit_proc;
}

void sc_impl(ppc_inst_t inst)
{