*** sim/h8300/compile.c.original Thu Nov 14 17:36:40 2002 --- sim/h8300/compile.c.modified Mon Dec 2 16:30:03 2002 *************** *** 35,40 **** --- 35,42 ---- #include "gdb/callback.h" #include "gdb/remote-sim.h" #include "gdb/sim-h8300.h" + #include "sys/stat.h" + #include "sys/types.h" #ifndef SIGTRAP # define SIGTRAP 5 *************** decode (addr, data, dst) *** 448,461 **** dst->opcode = q->how; dst->cycles = q->time; ! /* And a jsr to 0xc4 is turned into a magic trap. */ ! if (dst->opcode == O (O_JSR, SB)) { ! if (dst->src.literal == 0xc4) ! { ! dst->opcode = O (O_SYSCALL, SB); ! } } dst->next_pc = addr + len / 2; --- 450,483 ---- dst->opcode = q->how; dst->cycles = q->time; ! /* A jsr to these locations are turned into magic traps. */ if (dst->opcode == O (O_JSR, SB)) { ! switch (dst->src.literal) ! { ! case 0xc5: ! dst->opcode = O (O_SYS_OPEN, SB); ! break; ! case 0xc6: ! dst->opcode = O (O_SYS_READ, SB); ! break; ! case 0xc7: ! dst->opcode = O (O_SYS_WRITE, SB); ! break; ! case 0xc8: ! dst->opcode = O (O_SYS_LSEEK, SB); ! break; ! case 0xc9: ! dst->opcode = O (O_SYS_CLOSE, SB); ! break; ! case 0xca: ! dst->opcode = O (O_SYS_STAT, SB); ! break; ! case 0xcb: ! dst->opcode = O (O_SYS_FSTAT, SB); ! break; ! } ! /* End of Processing for system calls. */ } dst->next_pc = addr + len / 2; *************** sim_resume (sd, step, siggnal) *** 1392,1403 **** goto condtrue; goto next; ! case O (O_SYSCALL, SB): { ! char c = cpu.regs[2]; ! sim_callback->write_stdout (sim_callback, &c, 1); } goto next; ONOT (O_NOT, rd = ~rd; v = 0;); OSHIFTS (O_SHLL, --- 1414,1689 ---- goto condtrue; goto next; ! /* System call processing starts. */ ! case O (O_SYS_OPEN, SB) : ! { ! int len = 0; /* Length of filename */ ! char *filename ; /* Filename would go here */ ! char temp_char; /* Temporary character */ ! int mode = 0; /* Mode bits for the file */ ! int open_return; /* Return value of open, file descriptor */ ! int i; /* Loop counter */ ! int filename_ptr; /* Pointer to filename in cpu memory */ ! ! /* Setting filename_ptr to first argument of open. */ ! filename_ptr = cpu.regs[0]; ! ! /* Trying to get mode. */ ! if (h8300hmode || h8300smode) ! { ! mode = GET_MEMORY_L(cpu.regs[7] + 8); ! } ! else ! { ! mode = GET_MEMORY_W(cpu.regs[7] + 4); ! } ! ! /* Trying to find the length of the filename. */ ! temp_char = GET_MEMORY_B(cpu.regs[0]); ! ! len = 1; ! while (temp_char != '\0') ! { ! temp_char = GET_MEMORY_B (filename_ptr + len); ! len++; ! } ! ! /* Allocating space for the filename. */ ! filename = (char *)malloc(sizeof(char) * len); ! ! /* String copying the filename from memory. */ ! for (i = 0; i < len; i++) ! { ! temp_char = GET_MEMORY_B (filename_ptr + i); ! filename[i] = temp_char; ! } ! ! /* Callback to open and return the file descriptor. */ ! open_return = sim_callback->open (sim_callback, filename, mode); ! ! /* Return value in register 0. */ ! cpu.regs[0] = open_return; ! ! /* Freeing memory used for filename. */ ! free (filename); ! } ! goto next; ! ! case O (O_SYS_READ, SB): ! { ! char *char_ptr ; /* Where characters read would be stored. */ ! int fd = cpu.regs[0]; /* File descriptor */ ! int buf_size = cpu.regs[2]; /* BUF_SIZE parameter in read */ ! int i = 0; /* Temporary Loop counter */ ! int read_return = 0; /* Return value from callback to read */ ! ! char_ptr = (char *)malloc(sizeof(char) * buf_size); ! ! /* Callback to read and return the no. of characters read. */ ! read_return = sim_callback->read (sim_callback, fd, char_ptr, buf_size); ! ! /* The characters read are stored in cpu memory. */ ! for (i = 0; i < buf_size; i++) ! { ! SET_MEMORY_B ((cpu.regs[1] + (sizeof(char) * i)), *(char_ptr + (sizeof(char) * i))); ! } ! ! /* Return value in Register 0. */ ! cpu.regs[0] = read_return; ! ! /* Freeing memory used as buffer. */ ! free (char_ptr); ! } ! goto next; ! ! case O (O_SYS_WRITE, SB): ! { ! int fd = cpu.regs[0]; /* File descriptor */ ! char temp_char; /* Temporary character */ ! int len = cpu.regs[2]; /* Length of write, Parameter II to write */ ! int char_ptr = cpu.regs[1]; /* Character Pointer, Parameter I of write */ ! char *ptr; /* Where characters to be written are stored */ ! int write_return; /* Return value from write */ ! int i = 0; /* Loop counter */ ! ! /* Allocating space for the characters to be written. */ ! ptr = (char *)malloc(sizeof(char) * len); ! ! /* Fetching the characters from cpu memory. */ ! for (i = 0; i < len; i++) ! { ! temp_char = GET_MEMORY_B (char_ptr + i); ! ptr[i] = temp_char; ! } ! ! /* Callback write and return the no. of characters written. */ ! write_return = sim_callback->write (sim_callback, fd, ptr, len); ! ! /* Return value in Register 0. */ ! cpu.regs[0] = write_return; ! ! /* Freeing memory used as buffer. */ ! free (ptr); ! } ! goto next; ! ! case O (O_SYS_LSEEK, SB): ! { ! int fd = cpu.regs[0]; /* File descriptor */ ! int offset = cpu.regs[1]; /* Offset */ ! int origin = cpu.regs[2]; /* Origin */ ! int lseek_return; /* Return by lseek */ ! ! /* Callback lseek and return offset. */ ! lseek_return = sim_callback->lseek (sim_callback, fd, offset, origin); ! ! /* Return value in register 0. */ ! cpu.regs[0] = lseek_return; ! } ! goto next; ! ! case O (O_SYS_CLOSE, SB): ! { ! int fd = cpu.regs[0]; /* File descriptor */ ! int close_return; /* Return by close */ ! ! /* Callback close and return. */ ! close_return = sim_callback->close (sim_callback, fd); ! ! /* Return value in register 0. */ ! cpu.regs[0] = close_return; ! } ! goto next; ! ! case O (O_SYS_FSTAT, SB): ! { ! int fd = cpu.regs[0]; /* File descriptor */ ! struct stat stat_rec; /* Stat record */ ! int fstat_return; /* Return value of stat */ ! int stat_ptr; /* Pointer to stat record */ ! char *temp_stat_ptr; /* Temporary stat_rec pointer */ ! int buf_size = 0; /* Temporary variable for buffer size */ ! int i = 0; /* Loop Counter */ ! int j = 0; /* Temporary variable for Position in source */ ! int short_size = sizeof (short); /* Sizeof short */ ! int int_size = sizeof (int); /* Sizeof int */ ! ! /* Setting stat_ptr to second argument of stat. */ ! stat_ptr = cpu.regs[1]; ! ! /* Callback stat and return. */ ! fstat_return = sim_callback->fstat (sim_callback, fd, &stat_rec); ! ! /* Have stat_ptr point to starting of stat_rec. */ ! temp_stat_ptr = (char *)(&stat_rec); ! ! /* Setting up the stat structure returned. */ ! SET_MEMORY_W (stat_ptr, stat_rec.st_dev); ! stat_ptr += 2; ! SET_MEMORY_W (stat_ptr, stat_rec.st_ino); ! stat_ptr += 2; ! SET_MEMORY_L (stat_ptr, stat_rec.st_mode); ! stat_ptr += 4; ! SET_MEMORY_W (stat_ptr, stat_rec.st_nlink); ! stat_ptr += 2; ! SET_MEMORY_W (stat_ptr, stat_rec.st_uid); ! stat_ptr += 2; ! SET_MEMORY_W (stat_ptr, stat_rec.st_gid); ! stat_ptr += 2; ! SET_MEMORY_W (stat_ptr, stat_rec.st_rdev); ! stat_ptr += 2; ! SET_MEMORY_L (stat_ptr, stat_rec.st_size); ! stat_ptr += 4; ! SET_MEMORY_L (stat_ptr, stat_rec.st_atime); ! stat_ptr += 8; ! SET_MEMORY_L (stat_ptr, stat_rec.st_mtime); ! stat_ptr += 8; ! SET_MEMORY_L (stat_ptr, stat_rec.st_ctime); ! ! /* Return value in register 0. */ ! cpu.regs[0] = fstat_return; ! } ! goto next; ! ! case O (O_SYS_STAT, SB): { ! int len = 0; /* Length of filename */ ! char *filename ; /* Filename would go here */ ! char temp_char; /* Temporary character */ ! int filename_ptr; /* Pointer to filename in cpu memory */ ! struct stat stat_rec; /* Stat record */ ! int stat_return; /* Return value of stat */ ! int stat_ptr; /* Pointer to stat record */ ! char *temp_stat_ptr; /* Temporary stat_rec pointer */ ! int buf_size = 0; /* Temporary variable for buffer size */ ! int i = 0; /* Loop Counter */ ! int j = 0; /* Temporary variable for Position in source */ ! int short_size = sizeof (short); /* Sizeof short */ ! int int_size = sizeof (int); /* Sizeof int */ ! ! /* Setting filename_ptr to first argument of open. */ ! filename_ptr = cpu.regs[0]; ! ! /* Trying to find the length of the filename. */ ! temp_char = GET_MEMORY_B(cpu.regs[0]); ! ! len = 1; ! while (temp_char != '\0') ! { ! temp_char = GET_MEMORY_B (filename_ptr + len); ! len++; ! } ! ! /* Allocating space for the filename. */ ! filename = (char *)malloc(sizeof(char) * len); ! ! /* String copying the filename from memory. */ ! for (i = 0; i < len; i++) ! { ! temp_char = GET_MEMORY_B (filename_ptr + i); ! filename[i] = temp_char; ! } ! ! /* Setting stat_ptr to second argument of stat. */ ! stat_ptr = cpu.regs[1]; ! ! /* Callback stat and return. */ ! stat_return = sim_callback->stat (sim_callback, filename, &stat_rec); ! ! /* Have stat_ptr point to starting of stat_rec. */ ! temp_stat_ptr = (char *)(&stat_rec); ! ! /* Freeing memory used for filename. */ ! free (filename); ! ! /* Setting up the stat structure returned. */ ! SET_MEMORY_W (stat_ptr, stat_rec.st_dev); ! stat_ptr += 2; ! SET_MEMORY_W (stat_ptr, stat_rec.st_ino); ! stat_ptr += 2; ! SET_MEMORY_L (stat_ptr, stat_rec.st_mode); ! stat_ptr += 4; ! SET_MEMORY_W (stat_ptr, stat_rec.st_nlink); ! stat_ptr += 2; ! SET_MEMORY_W (stat_ptr, stat_rec.st_uid); ! stat_ptr += 2; ! SET_MEMORY_W (stat_ptr, stat_rec.st_gid); ! stat_ptr += 2; ! SET_MEMORY_W (stat_ptr, stat_rec.st_rdev); ! stat_ptr += 2; ! SET_MEMORY_L (stat_ptr, stat_rec.st_size); ! stat_ptr += 4; ! SET_MEMORY_L (stat_ptr, stat_rec.st_atime); ! stat_ptr += 8; ! SET_MEMORY_L (stat_ptr, stat_rec.st_mtime); ! stat_ptr += 8; ! SET_MEMORY_L (stat_ptr, stat_rec.st_ctime); ! ! /* Return value in register 0. */ ! cpu.regs[0] = stat_return; } goto next; + /* End of system call processing. */ ONOT (O_NOT, rd = ~rd; v = 0;); OSHIFTS (O_SHLL, *** include/opcode/h8300.h.original Thu Nov 14 17:35:40 2002 --- include/opcode/h8300.h.modified Mon Dec 2 17:11:07 2002 *************** struct h8_opcode *** 305,310 **** --- 305,320 ---- #define O_STM 86 #define O_STMAC 87 #define O_LAST 88 + /* Change made for System Call processing. */ + #define O_SYS_CREAT 100 + #define O_SYS_OPEN 101 + #define O_SYS_READ 102 + #define O_SYS_WRITE 103 + #define O_SYS_LSEEK 104 + #define O_SYS_CLOSE 105 + #define O_SYS_STAT 106 + #define O_SYS_FSTAT 107 + /* End of System Call specific Changes. */ #define SB 0 #define SW 1 #define SL 2