/* armos.c -- ARMulator OS interface: ARM6 Instruction Emulator.
Copyright (C) 1994 Advanced RISC Machines Ltd.
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.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* This file contains a model of Demon, ARM Ltd's Debug Monitor,
including all the SWI's required to support the C library. The code in
it is not really for the faint-hearted (especially the abort handling
code), but it is a complete example. Defining NOOS will disable all the
fun, and definign VAILDATE will define SWI 1 to enter SVC mode, and SWI
0x11 to halt the emulator. */
//chy 2005-09-12 disable below line
//#include "config.h"
#include <time.h>
#include <errno.h>
#include <string.h>
#include "core/arm/skyeye_common/skyeye_defs.h"
#ifndef __USE_LARGEFILE64
#define __USE_LARGEFILE64 /* When use 64 bit large file need define it! for stat64*/
#endif
#include <fcntl.h>
#include <sys/stat.h>
#ifndef O_RDONLY
#define O_RDONLY 0
#endif
#ifndef O_WRONLY
#define O_WRONLY 1
#endif
#ifndef O_RDWR
#define O_RDWR 2
#endif
#ifndef O_BINARY
#define O_BINARY 0
#endif
#ifdef __STDC__
#define unlink(s) remove(s)
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h> /* For SEEK_SET etc */
#endif
#ifdef __riscos
extern int _fisatty (FILE *);
#define isatty_(f) _fisatty(f)
#else
#ifdef __ZTC__
#include <io.h>
#define isatty_(f) isatty((f)->_file)
#else
#ifdef macintosh
#include <ioctl.h>
#define isatty_(f) (~ioctl ((f)->_file, FIOINTERACTIVE, NULL))
#else
#define isatty_(f) isatty (fileno (f))
#endif
#endif
#endif
#include "core/arm/skyeye_common/armdefs.h"
#include "core/arm/skyeye_common/armos.h"
#include "core/arm/skyeye_common/armemu.h"
#ifndef NOOS
#ifndef VALIDATE
/* #ifndef ASIM */
//chy 2005-09-12 disable below line
//#include "armfpe.h"
/* #endif */
#endif
#endif
#define DUMP_SYSCALL 0
#define dump(...) do { if (DUMP_SYSCALL) printf(__VA_ARGS__); } while(0)
//#define debug(...) printf(__VA_ARGS__);
#define debug(...) ;
extern unsigned ARMul_OSHandleSWI (ARMul_State * state, ARMword number);
#ifndef FOPEN_MAX
#define FOPEN_MAX 64
#endif
/***************************************************************************\
* OS private Information *
\***************************************************************************/
unsigned arm_dyncom_SWI(ARMul_State * state, ARMword number)
{
return ARMul_OSHandleSWI(state, number);
}
//mmap_area_t *mmap_global = NULL;
static int translate_open_mode[] = {
O_RDONLY, /* "r" */
O_RDONLY + O_BINARY, /* "rb" */
O_RDWR, /* "r+" */
O_RDWR + O_BINARY, /* "r+b" */
O_WRONLY + O_CREAT + O_TRUNC, /* "w" */
O_WRONLY + O_BINARY + O_CREAT + O_TRUNC, /* "wb" */
O_RDWR + O_CREAT + O_TRUNC, /* "w+" */
O_RDWR + O_BINARY + O_CREAT + O_TRUNC, /* "w+b" */
O_WRONLY + O_APPEND + O_CREAT, /* "a" */
O_WRONLY + O_BINARY + O_APPEND + O_CREAT, /* "ab" */
O_RDWR + O_APPEND + O_CREAT, /* "a+" */
O_RDWR + O_BINARY + O_APPEND + O_CREAT /* "a+b" */
};
//
//static void
//SWIWrite0 (ARMul_State * state, ARMword addr)
//{
// ARMword temp;
//
// //while ((temp = ARMul_ReadByte (state, addr++)) != 0)
// while(1){
// mem_read(8, addr++, &temp);
// if(temp != 0)
// (void) fputc ((char) temp, stdout);
// else
// break;
// }
//}
//
//static void
//WriteCommandLineTo (ARMul_State * state, ARMword addr)
//{
// ARMword temp;
// char *cptr = state->CommandLine;
// if (cptr == NULL)
// cptr = "\0";
// do {
// temp = (ARMword) * cptr++;
// //ARMul_WriteByte (state, addr++, temp);
// mem_write(8, addr++, temp);
// }
// while (temp != 0);
//}
//
//static void
//SWIopen (ARMul_State * state, ARMword name, ARMword SWIflags)
//{
// char dummy[2000];
// int flags;
// int i;
//
// for (i = 0; (dummy[i] = ARMul_ReadByte (state, name + i)); i++);
// assert(SWIflags< (sizeof(translate_open_mode)/ sizeof(translate_open_mode[0])));
// /* Now we need to decode the Demon open mode */
// flags = translate_open_mode[SWIflags];
// flags = SWIflags;
//
// /* Filename ":tt" is special: it denotes stdin/out */
// if (strcmp (dummy, ":tt") == 0) {
// if (flags == O_RDONLY) /* opening tty "r" */
// state->Reg[0] = 0; /* stdin */
// else
// state->Reg[0] = 1; /* stdout */
// }
// else {
// state->Reg[0] = (int) open (dummy, flags, 0666);
// }
//}
//
//static void
//SWIread (ARMul_State * state, ARMword f, ARMword ptr, ARMword len)
//{
// int res;
// int i;
// char *local = (char*) malloc (len);
//
// if (local == NULL) {
// fprintf (stderr,
// "sim: Unable to read 0x%ulx bytes - out of memory\n",
// len);
// return;
// }
//
// res = read (f, local, len);
// if (res > 0)
// for (i = 0; i < res; i++)
// //ARMul_WriteByte (state, ptr + i, local[i]);
// mem_write(8, ptr + i, local[i]);
// free (local);
// //state->Reg[0] = res == -1 ? -1 : len - res;
// state->Reg[0] = res;
//}
//
//static void
//SWIwrite (ARMul_State * state, ARMword f, ARMword ptr, ARMword len)
//{
// int res;
// ARMword i;
// char *local = malloc (len);
//
// if (local == NULL) {
// fprintf (stderr,
// "sim: Unable to write 0x%lx bytes - out of memory\n",
// (long unsigned int) len);
// return;
// }
//
// for (i = 0; i < len; i++){
// //local[i] = ARMul_ReadByte (state, ptr + i);
// ARMword data;
// mem_read(8, ptr + i, &data);
// local[i] = data & 0xFF;
// }
//
// res = write (f, local, len);
// //state->Reg[0] = res == -1 ? -1 : len - res;
// state->Reg[0] = res;
// free (local);
//}
//static void
//SWIflen (ARMul_State * state, ARMword fh)
//{
// ARMword addr;
//
// if (fh == 0 || fh > FOPEN_MAX) {
// state->Reg[0] = -1L;
// return;
// }
//
// addr = lseek (fh, 0, SEEK_CUR);
//
// state->Reg[0] = lseek (fh, 0L, SEEK_END);
// (void) lseek (fh, addr, SEEK_SET);
//
//}
/***************************************************************************\
* The emulator calls this routine when a SWI instruction is encuntered. The *
* parameter passed is the SWI number (lower 24 bits of the instruction). *
\***************************************************************************/
/* ahe-ykl information is retrieved from elf header and the starting value of
brk_static is in sky_info_t */
/* brk static hold the value of brk */
static uint32_t brk_static = -1;
unsigned
ARMul_OSHandleSWI (ARMul_State * state, ARMword number)
{
number &= 0xfffff;
ARMword addr, temp;
switch (number) {
// case SWI_Syscall:
// if (state->Reg[7] != 0)
// return ARMul_OSHandleSWI(state, state->Reg[7]);
// else
// return FALSE;
// case SWI_Read:
// SWIread (state, state->Reg[0], state->Reg[1], state->Reg[2]);
// return TRUE;
//
// case SWI_GetUID32:
// state->Reg[0] = getuid();
// return TRUE;
//
// case SWI_GetGID32:
// state->Reg[0] = getgid();
// return TRUE;
//
// case SWI_GetEUID32:
// state->Reg[0] = geteuid();
// return TRUE;
//
// case SWI_GetEGID32:
// state->Reg[0] = getegid();
// return TRUE;
//
// case SWI_Write:
// SWIwrite (state, state->Reg[0], state->Reg[1], state->Reg[2]);
// return TRUE;
//
// case SWI_Open:
// SWIopen (state, state->Reg[0], state->Reg[1]);
// return TRUE;
//
// case SWI_Close:
// state->Reg[0] = close (state->Reg[0]);
// return TRUE;
//
// case SWI_Seek:{
// /* We must return non-zero for failure */
// state->Reg[0] =
// lseek (state->Reg[0], state->Reg[1],
// SEEK_SET);
// return TRUE;
// }
//
// case SWI_ExitGroup:
// case SWI_Exit:
// {
// struct timeval tv;
// //gettimeofday(&tv,NULL);
// //printf("In %s, %d sec, %d usec\n", __FUNCTION__, tv.tv_sec, tv.tv_usec);
// printf("passed %d sec, %lld usec\n", get_clock_sec(), get_clock_us());
//
// /* quit here */
// run_command("quit");
// return TRUE;
// }
// case SWI_Times:{
// uint32_t dest = state->Reg[0];
// struct tms now;
// struct target_tms32 nowret;
//
// uint32_t ret = times(&now);
//
// if (ret == -1){
// debug("syscall %s error %d\n", "SWI_Times", ret);
// state->Reg[0] = ret;
// return FALSE;
// }
//
// nowret.tms_cstime = now.tms_cstime;
// nowret.tms_cutime = now.tms_cutime;
// nowret.tms_stime = now.tms_stime;
// nowret.tms_utime = now.tms_utime;
//
// uint32_t offset;
// for (offset = 0; offset < sizeof(nowret); offset++) {
// bus_write(8, dest + offset, *((uint8_t *) &nowret + offset));
// }
//
// state->Reg[0] = ret;
// return TRUE;
// }
//
// case SWI_Gettimeofday: {
// uint32_t dest1 = state->Reg[0];
// uint32_t dest2 = state->Reg[1]; // Unsure of this
// struct timeval val;
// struct timezone zone;
// struct target_timeval32 valret;
// struct target_timezone32 zoneret;
//
// uint32_t ret = gettimeofday(&val, &zone);
// valret.tv_sec = val.tv_sec;
// valret.tv_usec = val.tv_usec;
// zoneret.tz_dsttime = zoneret.tz_dsttime;
// zoneret.tz_minuteswest = zoneret.tz_minuteswest;
//
// if (ret == -1){
// debug("syscall %s error %d\n", "SWI_Gettimeofday", ret);
// state->Reg[0] = ret;
// return FALSE;
// }
//
// uint32_t offset;
// if (dest1) {
// for (offset = 0; offset < sizeof(valret); offset++) {
// bus_write(8, dest1 + offset, *((uint8_t *) &valret + offset));
// }
// state->Reg[0] = ret;
// }
// if (dest2) {
// for (offset = 0; offset < sizeof(zoneret); offset++) {
// bus_write(8, dest2 + offset, *((uint8_t *) &zoneret + offset));
// }
// state->Reg[0] = ret;
// }
//
// return TRUE;
// }
// case SWI_Brk:
// /* initialize brk value */
// /* suppose that brk_static doesn't reach 0xffffffff... */
// if (brk_static == -1) {
// brk_static = (get_skyeye_pref()->info).brk;
// }
//
// /* FIXME there might be a need to do a mmap */
//
// if(state->Reg[0]){
// if (get_skyeye_exec_info()->mmap_access) {
// /* if new brk is greater than current brk, allocate memory */
// if (state->Reg[0] > brk_static) {
// uint32_t ret = mmap( (void *) brk_static, state->Reg[0] - brk_static,
// PROT_WRITE, MAP_PRIVATE | MAP_FIXED | MAP_ANONYMOUS, -1, 0 );
// if (ret != MAP_FAILED)
// brk_static = ret;
// }
// }
// brk_static = state->Reg[0];
// //state->Reg[0] = 0; /* FIXME return value of brk set to be the address on success */
// } else {
// state->Reg[0] = brk_static;
// }
// return TRUE;
//
// case SWI_Break:
// state->Emulate = FALSE;
// return TRUE;
//
// case SWI_Mmap:{
// int addr = state->Reg[0];
// int len = state->Reg[1];
// int prot = state->Reg[2];
// int flag = state->Reg[3];
// int fd = state->Reg[4];
// int offset = state->Reg[5];
// mmap_area_t *area = new_mmap_area(addr, len);
// state->Reg[0] = area->bank.addr;
// //printf("syscall %d mmap(0x%x,%x,0x%x,0x%x,%d,0x%x) = 0x%x\n",\
// SWI_Mmap, addr, len, prot, flag, fd, offset, state->Reg[0]);
// return TRUE;
// }
//
// case SWI_Munmap:
// state->Reg[0] = 0;
// return TRUE;
//
// case SWI_Mmap2:{
// int addr = state->Reg[0];
// int len = state->Reg[1];
// int prot = state->Reg[2];
// int flag = state->Reg[3];
// int fd = state->Reg[4];
// int offset = state->Reg[5] * 4096; /* page offset */
// mmap_area_t *area = new_mmap_area(addr, len);
// state->Reg[0] = area->bank.addr;
//
// return TRUE;
// }
//
// case SWI_Breakpoint:
// //chy 2005-09-12 change below line
// //state->EndCondition = RDIError_BreakpointReached;
// //printf ("SKYEYE: in armos.c : should not come here!!!!\n");
// state->EndCondition = 0;
// /*modified by ksh to support breakpoiont*/
// state->Emulate = STOP;
// return (TRUE);
// case SWI_Uname:
// {
// struct utsname *uts = (uintptr_t) state->Reg[0]; /* uname should write data in this address */
// struct utsname utsbuf;
// //printf("Uname size is %x\n", sizeof(utsbuf));
// char *buf;
// uintptr_t sp ; /* used as a temporary address */
//
//#define COPY_UTS_STRING(addr) \
// buf = addr; \
// while(*buf != NULL) { \
// bus_write(8, sp, *buf); \
// sp++; \
// buf++; \
// }
//#define COPY_UTS(field) /*printf("%s: %s at %p\n", #field, utsbuf.field, uts->field);*/ \
// sp = (uintptr_t) uts->field; \
// COPY_UTS_STRING((&utsbuf)->field);
//
// if (uname(&utsbuf) < 0) {
// printf("syscall uname: utsname error\n");
// state->Reg[0] = -1;
// return FALSE;
// }
//
// /* FIXME for now, this is just the host system call
// Some data should be missing, as it depends on
// the version of utsname */
// COPY_UTS(sysname);
// COPY_UTS(nodename);
// COPY_UTS(release);
// COPY_UTS(version);
// COPY_UTS(machine);
//
// state->Reg[0] = 0;
// return TRUE;
// }
// case SWI_Fcntl:
// {
// uint32_t fd = state->Reg[0];
// uint32_t cmd = state->Reg[1];
// uint32_t arg = state->Reg[2];
// uint32_t ret;
//
// switch(cmd){
// case (F_GETFD):
// {
// ret = fcntl(fd, cmd, arg);
// //printf("syscall fcntl for getfd not implemented, ret %d\n", ret);
// state->Reg[0] = ret;
// return FALSE;
// }
// default:
// break;
// }
//
// printf("syscall fcntl unimplemented fd %x cmd %x\n", fd, cmd);
// state->Reg[0] = -1;
// return FALSE;
//
// }
// case SWI_Fstat64:
// {
// uint32_t dest = state->Reg[1];
// uint32_t fd = state->Reg[0];
// struct stat64 statbuf;
// struct target_stat64 statret;
// memset(&statret, 0, sizeof(struct target_stat64));
// uint32_t ret = fstat64(fd, &statbuf);
//
// if (ret == -1){
// printf("syscall %s returned error\n", "SWI_Fstat");
// state->Reg[0] = ret;
// return FALSE;
// }
//
// /* copy statbuf to the process memory space
// FIXME can't say if endian has an effect here */
// uint32_t offset;
// //printf("Fstat system is size %x\n", sizeof(statbuf));
// //printf("Fstat target is size %x\n", sizeof(statret));
//
// /* we copy system structure data stat64 into arm fixed size structure target_stat64 */
// statret.st_dev = statbuf.st_dev;
// statret.st_ino = statbuf.st_ino;
// statret.st_mode = statbuf.st_mode;
// statret.st_nlink = statbuf.st_nlink;
// statret.st_uid = statbuf.st_uid;
// statret.st_gid = statbuf.st_gid;
// statret.st_rdev = statbuf.st_rdev;
// statret.st_size = statbuf.st_size;
// statret.st_blksize = statbuf.st_blksize;
// statret.st_blocks = statbuf.st_blocks;
// statret.st32_atime = statbuf.st_atime;
// statret.st32_mtime = statbuf.st_mtime;
// statret.st32_ctime = statbuf.st_ctime;
//
// for (offset = 0; offset < sizeof(statret); offset++) {
// bus_write(8, dest + offset, *((uint8_t *) &statret + offset));
// }
//
// state->Reg[0] = ret;
// return TRUE;
// }
// case SWI_Set_tls:
// {
// //printf("syscall set_tls unimplemented\n");
// state->mmu.thread_uro_id = state->Reg[0];
// state->CP15[CP15_THREAD_URO - CP15_BASE] = state->Reg[0];
// state->Reg[0] = 0;
// return FALSE;
// }
//#if 0
// case SWI_Clock:
// /* return number of centi-seconds... */
// state->Reg[0] =
//#ifdef CLOCKS_PER_SEC
// (CLOCKS_PER_SEC >= 100)
// ? (ARMword) (clock () / (CLOCKS_PER_SEC / 100))
// : (ARMword) ((clock () * 100) / CLOCKS_PER_SEC);
//#else
// /* presume unix... clock() returns microseconds */
// (ARMword) (clock () / 10000);
//#endif
// return (TRUE);
//
// case SWI_Time:
// state->Reg[0] = (ARMword) time (NULL);
// return (TRUE);
// case SWI_Flen:
// SWIflen (state, state->Reg[0]);
// return (TRUE);
//
//#endif
default:
_dbg_assert_msg_(ARM11, false, "ImplementMe: ARMul_OSHandleSWI!");
return (FALSE);
}
}
//
///**
// * @brief For mmap syscall.A mmap_area is a memory bank. Get from ppc.
// */
//static mmap_area_t* new_mmap_area(int sim_addr, int len){
// mmap_area_t *area = (mmap_area_t *)malloc(sizeof(mmap_area_t));
// if(area == NULL){
// printf("error, failed %s\n",__FUNCTION__);
// exit(0);
// }
//#if FAST_MEMORY
// if (mmap_next_base == -1)
// {
// mmap_next_base = get_skyeye_exec_info()->brk;
// }
//#endif
//
// memset(area, 0x0, sizeof(mmap_area_t));
// area->bank.addr = mmap_next_base;
// area->bank.len = len;
// area->bank.bank_write = mmap_mem_write;
// area->bank.bank_read = mmap_mem_read;
// area->bank.type = MEMTYPE_RAM;
// area->bank.objname = "mmap";
// addr_mapping(&area->bank);
//
//#if FAST_MEMORY
// if (get_skyeye_exec_info()->mmap_access)
// {
// /* FIXME check proper flags */
// /* FIXME we may delete the need of banks up there */
// uint32_t ret = mmap(mmap_next_base, len, PROT_WRITE | PROT_READ, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
// mmap_next_base = ret;
// }
// area->mmap_addr = (uint8_t*)get_dma_addr(mmap_next_base);
//#else
// area->mmap_addr = malloc(len);
// if(area->mmap_addr == NULL){
// printf("error mmap malloc\n");
// exit(0);
// }
// memset(area->mmap_addr, 0x0, len);
//#endif
//
// area->next = NULL;
// if(mmap_global){
// area->next = mmap_global->next;
// mmap_global->next = area;
// }else{
// mmap_global = area;
// }
// mmap_next_base = mmap_next_base + len;
// return area;
//}
//
//static mmap_area_t *get_mmap_area(int addr){
// mmap_area_t *tmp = mmap_global;
// while(tmp){
// if ((tmp->bank.addr <= addr) && (tmp->bank.addr + tmp->bank.len > addr)){
// return tmp;
// }
// tmp = tmp->next;
// }
// printf("cannot get mmap area:addr=0x%x\n", addr);
// return NULL;
//}
//
///**
// * @brief the mmap_area bank write function. Get from ppc.
// *
// * @param size size to write, 8/16/32
// * @param addr address to write
// * @param value value to write
// *
// * @return sucess return 1,otherwise 0.
// */
//static char mmap_mem_write(short size, int addr, uint32_t value){
// mmap_area_t *area_tmp = get_mmap_area(addr);
// mem_bank_t *bank_tmp = &area_tmp->bank;
// int offset = addr - bank_tmp->addr;
// switch(size){
// case 8:{
// //uint8_t value_endian = value;
// uint8_t value_endian = (uint8_t)value;
// *(uint8_t *)&(((char *)area_tmp->mmap_addr)[offset]) = value_endian;
// debug("in %s,size=%d,addr=0x%x,value=0x%x\n",__FUNCTION__,size,addr,value_endian);
// break;
// }
// case 16:{
// //uint16_t value_endian = half_to_BE((uint16_t)value);
// uint16_t value_endian = ((uint16_t)value);
// *(uint16_t *)&(((char *)area_tmp->mmap_addr)[offset]) = value_endian;
// debug("in %s,size=%d,addr=0x%x,value=0x%x\n",__FUNCTION__,size,addr,value_endian);
// break;
// }
// case 32:{
// //uint32_t value_endian = word_to_BE((uint32_t)value);
// uint32_t value_endian = ((uint32_t)value);
// *(uint32_t *)&(((char *)area_tmp->mmap_addr)[offset]) = value_endian;
// debug("in %s,size=%d,addr=0x%x,value=0x%x\n",__FUNCTION__,size,addr,value_endian);
// break;
// }
// default:
// printf("invalid size %d\n",size);
// return 0;
// }
// return 1;
//}
//
///**
// * @brief the mmap_area bank read function. Get from ppc.
// *
// * @param size size to read, 8/16/32
// * @param addr address to read
// * @param value value to read
// *
// * @return sucess return 1,otherwise 0.
// */
//static char mmap_mem_read(short size, int addr, uint32_t * value){
// mmap_area_t *area_tmp = get_mmap_area(addr);
// mem_bank_t *bank_tmp = &area_tmp->bank;
// int offset = addr - bank_tmp->addr;
// switch(size){
// case 8:{
// //*(uint8_t *)value = *(uint8_t *)&(((uint8_t *)area_tmp->mmap_addr)[offset]);
// *value = *(uint8_t *)&(((uint8_t *)area_tmp->mmap_addr)[offset]);
// debug("in %s,size=%d,addr=0x%x,value=0x%x\n",__FUNCTION__,size,addr,*(uint32_t*)value);
// break;
// }
// case 16:{
// //*(uint16_t *)value = half_from_BE(*(uint16_t *)&(((uint8_t *)area_tmp->mmap_addr)[offset]));
// *value = (*(uint16_t *)&(((uint8_t *)area_tmp->mmap_addr)[offset]));
// debug("in %s,size=%d,addr=0x%x,value=0x%x\n",__FUNCTION__,size,addr,*(uint16_t*)value);
// break;
// }
// case 32:
// //*value = (uint32_t)word_from_BE(*(uint32_t *)&(((uint8_t *)area_tmp->mmap_addr)[offset]));
// *value = (uint32_t)(*(uint32_t *)&(((uint8_t *)area_tmp->mmap_addr)[offset]));
// debug("in %s,size=%d,addr=0x%x,value=0x%x\n",__FUNCTION__,size,addr,*(uint32_t*)value);
// break;
// default:
// printf("invalid size %d\n",size);
// return 0;
// }
// return 1;
//}
