| /* Convex stuff for GDB. |
| Copyright (C) 1990, 1991, 1996 Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| 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. */ |
| |
| #include "defs.h" |
| #include "command.h" |
| #include "symtab.h" |
| #include "value.h" |
| #include "frame.h" |
| #include "inferior.h" |
| #include "wait.h" |
| |
| #include <signal.h> |
| #include <fcntl.h> |
| |
| #include "gdbcore.h" |
| #include <sys/param.h> |
| #include <sys/dir.h> |
| #include <sys/user.h> |
| #include <sys/ioctl.h> |
| #include <sys/pcntl.h> |
| #include <sys/thread.h> |
| #include <sys/proc.h> |
| #include <sys/file.h> |
| #include "gdb_stat.h" |
| #include <sys/mman.h> |
| |
| #include "gdbcmd.h" |
| |
| CORE_ADDR |
| convex_skip_prologue (pc) |
| CORE_ADDR pc; |
| { |
| int op, ix; |
| op = read_memory_integer (pc, 2); |
| if ((op & 0xffc7) == 0x5ac0) |
| pc += 2; |
| else if (op == 0x1580) |
| pc += 4; |
| else if (op == 0x15c0) |
| pc += 6; |
| if ((read_memory_integer (pc, 2) & 0xfff8) == 0x7c40 |
| && (read_memory_integer (pc + 2, 2) & 0xfff8) == 0x1240 |
| && (read_memory_integer (pc + 8, 2) & 0xfff8) == 0x7c48) |
| pc += 10; |
| if (read_memory_integer (pc, 2) == 0x1240) |
| pc += 6; |
| for (;;) |
| { |
| op = read_memory_integer (pc, 2); |
| ix = (op >> 3) & 7; |
| if (ix != 6) |
| break; |
| if ((op & 0xfcc0) == 0x3000) |
| pc += 4; |
| else if ((op & 0xfcc0) == 0x3040) |
| pc += 6; |
| else if ((op & 0xfcc0) == 0x2800) |
| pc += 4; |
| else if ((op & 0xfcc0) == 0x2840) |
| pc += 6; |
| else |
| break; |
| } |
| return pc; |
| } |
| |
| int |
| convex_frameless_function_invocation (fi) |
| struct frame_info *fi; |
| { |
| int frameless; |
| extern CORE_ADDR text_start, text_end; |
| CORE_ADDR call_addr = SAVED_PC_AFTER_CALL (FI); |
| frameless = (call_addr >= text_start && call_addr < text_end |
| && read_memory_integer (call_addr - 6, 1) == 0x22); |
| return frameless; |
| } |
| |
| int |
| convex_frame_num_args (fi) |
| struct frame_info *fi; |
| { |
| int numargs = read_memory_integer (FRAME_ARGS_ADDRESS (fi) - 4, 4); |
| if (numargs < 0 || numargs >= 256) |
| numargs = -1; |
| return numargs; |
| } |
| |
| exec_file_command (filename, from_tty) |
| char *filename; |
| int from_tty; |
| { |
| int val; |
| int n; |
| struct stat st_exec; |
| |
| /* Eliminate all traces of old exec file. |
| Mark text segment as empty. */ |
| |
| if (execfile) |
| free (execfile); |
| execfile = 0; |
| data_start = 0; |
| data_end = 0; |
| text_start = 0; |
| text_end = 0; |
| exec_data_start = 0; |
| exec_data_end = 0; |
| if (execchan >= 0) |
| close (execchan); |
| execchan = -1; |
| |
| n_exec = 0; |
| |
| /* Now open and digest the file the user requested, if any. */ |
| |
| if (filename) |
| { |
| filename = tilde_expand (filename); |
| make_cleanup (free, filename); |
| |
| execchan = openp (getenv ("PATH"), 1, filename, O_RDONLY, 0, |
| &execfile); |
| if (execchan < 0) |
| perror_with_name (filename); |
| |
| if (myread (execchan, &filehdr, sizeof filehdr) < 0) |
| perror_with_name (filename); |
| |
| if (! IS_SOFF_MAGIC (filehdr.h_magic)) |
| error ("%s: not an executable file.", filename); |
| |
| if (myread (execchan, &opthdr, filehdr.h_opthdr) <= 0) |
| perror_with_name (filename); |
| |
| /* Read through the section headers. |
| For text, data, etc, record an entry in the exec file map. |
| Record text_start and text_end. */ |
| |
| lseek (execchan, (long) filehdr.h_scnptr, 0); |
| |
| for (n = 0; n < filehdr.h_nscns; n++) |
| { |
| if (myread (execchan, &scnhdr, sizeof scnhdr) < 0) |
| perror_with_name (filename); |
| |
| if ((scnhdr.s_flags & S_TYPMASK) >= S_TEXT |
| && (scnhdr.s_flags & S_TYPMASK) <= S_COMON) |
| { |
| exec_map[n_exec].mem_addr = scnhdr.s_vaddr; |
| exec_map[n_exec].mem_end = scnhdr.s_vaddr + scnhdr.s_size; |
| exec_map[n_exec].file_addr = scnhdr.s_scnptr; |
| exec_map[n_exec].type = scnhdr.s_flags & S_TYPMASK; |
| n_exec++; |
| |
| if ((scnhdr.s_flags & S_TYPMASK) == S_TEXT) |
| { |
| text_start = scnhdr.s_vaddr; |
| text_end = scnhdr.s_vaddr + scnhdr.s_size; |
| } |
| } |
| } |
| |
| fstat (execchan, &st_exec); |
| exec_mtime = st_exec.st_mtime; |
| |
| validate_files (); |
| } |
| else if (from_tty) |
| printf_filtered ("No executable file now.\n"); |
| |
| /* Tell display code (if any) about the changed file name. */ |
| if (exec_file_display_hook) |
| (*exec_file_display_hook) (filename); |
| } |
| |
| #if 0 |
| /* Read data from SOFF exec or core file. |
| Return 0 on success, EIO if address out of bounds. */ |
| |
| int |
| xfer_core_file (memaddr, myaddr, len) |
| CORE_ADDR memaddr; |
| char *myaddr; |
| int len; |
| { |
| register int i; |
| register int n; |
| register int val; |
| int xferchan; |
| char **xferfile; |
| int fileptr; |
| int returnval = 0; |
| |
| while (len > 0) |
| { |
| xferfile = 0; |
| xferchan = 0; |
| |
| /* Determine which file the next bunch of addresses reside in, |
| and where in the file. Set the file's read/write pointer |
| to point at the proper place for the desired address |
| and set xferfile and xferchan for the correct file. |
| If desired address is nonexistent, leave them zero. |
| i is set to the number of bytes that can be handled |
| along with the next address. */ |
| |
| i = len; |
| |
| for (n = 0; n < n_core; n++) |
| { |
| if (memaddr >= core_map[n].mem_addr && memaddr < core_map[n].mem_end |
| && (core_map[n].thread == -1 |
| || core_map[n].thread == inferior_thread)) |
| { |
| i = min (len, core_map[n].mem_end - memaddr); |
| fileptr = core_map[n].file_addr + memaddr - core_map[n].mem_addr; |
| if (core_map[n].file_addr) |
| { |
| xferfile = &corefile; |
| xferchan = corechan; |
| } |
| break; |
| } |
| else if (core_map[n].mem_addr >= memaddr |
| && core_map[n].mem_addr < memaddr + i) |
| i = core_map[n].mem_addr - memaddr; |
| } |
| |
| if (!xferfile) |
| for (n = 0; n < n_exec; n++) |
| { |
| if (memaddr >= exec_map[n].mem_addr |
| && memaddr < exec_map[n].mem_end) |
| { |
| i = min (len, exec_map[n].mem_end - memaddr); |
| fileptr = exec_map[n].file_addr + memaddr |
| - exec_map[n].mem_addr; |
| if (exec_map[n].file_addr) |
| { |
| xferfile = &execfile; |
| xferchan = execchan; |
| } |
| break; |
| } |
| else if (exec_map[n].mem_addr >= memaddr |
| && exec_map[n].mem_addr < memaddr + i) |
| i = exec_map[n].mem_addr - memaddr; |
| } |
| |
| /* Now we know which file to use. |
| Set up its pointer and transfer the data. */ |
| if (xferfile) |
| { |
| if (*xferfile == 0) |
| if (xferfile == &execfile) |
| error ("No program file to examine."); |
| else |
| error ("No core dump file or running program to examine."); |
| val = lseek (xferchan, fileptr, 0); |
| if (val < 0) |
| perror_with_name (*xferfile); |
| val = myread (xferchan, myaddr, i); |
| if (val < 0) |
| perror_with_name (*xferfile); |
| } |
| /* If this address is for nonexistent memory, |
| read zeros if reading, or do nothing if writing. */ |
| else |
| { |
| memset (myaddr, '\0', i); |
| returnval = EIO; |
| } |
| |
| memaddr += i; |
| myaddr += i; |
| len -= i; |
| } |
| return returnval; |
| } |
| #endif |
| |
| /* Here from info files command to print an address map. */ |
| |
| print_maps () |
| { |
| struct pmap ptrs[200]; |
| int n; |
| |
| /* ID strings for core and executable file sections */ |
| |
| static char *idstr[] = |
| { |
| "0", "text", "data", "tdata", "bss", "tbss", |
| "common", "ttext", "ctx", "tctx", "10", "11", "12", |
| }; |
| |
| for (n = 0; n < n_core; n++) |
| { |
| core_map[n].which = 0; |
| ptrs[n] = core_map[n]; |
| } |
| for (n = 0; n < n_exec; n++) |
| { |
| exec_map[n].which = 1; |
| ptrs[n_core+n] = exec_map[n]; |
| } |
| |
| qsort (ptrs, n_core + n_exec, sizeof *ptrs, ptr_cmp); |
| |
| for (n = 0; n < n_core + n_exec; n++) |
| { |
| struct pmap *p = &ptrs[n]; |
| if (n > 0) |
| { |
| if (p->mem_addr < ptrs[n-1].mem_end) |
| p->mem_addr = ptrs[n-1].mem_end; |
| if (p->mem_addr >= p->mem_end) |
| continue; |
| } |
| printf_filtered ("%08x .. %08x %-6s %s\n", |
| p->mem_addr, p->mem_end, idstr[p->type], |
| p->which ? execfile : corefile); |
| } |
| } |
| |
| /* Compare routine to put file sections in order. |
| Sort into increasing order on address, and put core file sections |
| before exec file sections if both files contain the same addresses. */ |
| |
| static ptr_cmp (a, b) |
| struct pmap *a, *b; |
| { |
| if (a->mem_addr != b->mem_addr) return a->mem_addr - b->mem_addr; |
| return a->which - b->which; |
| } |
| |
| /* Trapped internal variables are used to handle special registers. |
| A trapped i.v. calls a hook here every time it is dereferenced, |
| to provide a new value for the variable, and it calls a hook here |
| when a new value is assigned, to do something with the value. |
| |
| The vector registers are $vl, $vs, $vm, $vN, $VN (N in 0..7). |
| The communication registers are $cN, $CN (N in 0..63). |
| They not handled as regular registers because it's expensive to |
| read them, and their size varies, and they have too many names. */ |
| |
| |
| /* Return 1 if NAME is a trapped internal variable, else 0. */ |
| |
| int |
| is_trapped_internalvar (name) |
| char *name; |
| { |
| if ((name[0] == 'c' || name[0] == 'C') |
| && name[1] >= '0' && name[1] <= '9' |
| && (name[2] == '\0' |
| || (name[2] >= '0' && name[2] <= '9' |
| && name[3] == '\0' && name[1] != '0')) |
| && atoi (&name[1]) < 64) return 1; |
| |
| if ((name[0] == 'v' || name[0] == 'V') |
| && (((name[1] & -8) == '0' && name[2] == '\0') |
| || STREQ (name, "vl") |
| || STREQ (name, "vs") |
| || STREQ (name, "vm"))) |
| return 1; |
| else return 0; |
| } |
| |
| /* Return the value of trapped internal variable VAR */ |
| |
| value |
| value_of_trapped_internalvar (var) |
| struct internalvar *var; |
| { |
| char *name = var->name; |
| value val; |
| struct type *type; |
| struct type *range_type; |
| long len = *read_vector_register (VL_REGNUM); |
| if (len <= 0 || len > 128) len = 128; |
| |
| if (STREQ (name, "vl")) |
| { |
| val = value_from_longest (builtin_type_int, |
| (LONGEST) *read_vector_register_1 (VL_REGNUM)); |
| } |
| else if (STREQ (name, "vs")) |
| { |
| val = value_from_longest (builtin_type_int, |
| (LONGEST) *read_vector_register_1 (VS_REGNUM)); |
| } |
| else if (STREQ (name, "vm")) |
| { |
| long vm[4]; |
| long i, *p; |
| memcpy (vm, read_vector_register_1 (VM_REGNUM), sizeof vm); |
| range_type = |
| create_range_type ((struct type *) NULL, builtin_type_int, 0, len - 1); |
| type = |
| create_array_type ((struct type *) NULL, builtin_type_int, range_type); |
| val = allocate_value (type); |
| p = (long *) VALUE_CONTENTS (val); |
| for (i = 0; i < len; i++) |
| *p++ = !! (vm[3 - (i >> 5)] & (1 << (i & 037))); |
| } |
| else if (name[0] == 'V') |
| { |
| range_type = |
| create_range_type ((struct type *) NULL, builtin_type_int 0, len - 1); |
| type = |
| create_array_type ((struct type *) NULL, builtin_type_long_long, |
| range_type); |
| val = allocate_value (type); |
| memcpy (VALUE_CONTENTS (val), |
| read_vector_register_1 (name[1] - '0'), |
| TYPE_LENGTH (type)); |
| } |
| else if (name[0] == 'v') |
| { |
| long *p1, *p2; |
| range_type = |
| create_range_type ((struct type *) NULL, builtin_type_int 0, len - 1); |
| type = |
| create_array_type ((struct type *) NULL, builtin_type_long, |
| range_type); |
| val = allocate_value (type); |
| p1 = read_vector_register_1 (name[1] - '0'); |
| p2 = (long *) VALUE_CONTENTS (val); |
| while (--len >= 0) {p1++; *p2++ = *p1++;} |
| } |
| |
| else if (name[0] == 'c') |
| val = value_from_longest (builtin_type_int, |
| read_comm_register (atoi (&name[1]))); |
| else if (name[0] == 'C') |
| val = value_from_longest (builtin_type_long_long, |
| read_comm_register (atoi (&name[1]))); |
| |
| VALUE_LVAL (val) = lval_internalvar; |
| VALUE_INTERNALVAR (val) = var; |
| return val; |
| } |
| |
| /* Handle a new value assigned to a trapped internal variable */ |
| |
| void |
| set_trapped_internalvar (var, val, bitpos, bitsize, offset) |
| struct internalvar *var; |
| value val; |
| int bitpos, bitsize, offset; |
| { |
| char *name = var->name; |
| long long newval = value_as_long (val); |
| |
| if (STREQ (name, "vl")) |
| write_vector_register (VL_REGNUM, 0, newval); |
| else if (STREQ (name, "vs")) |
| write_vector_register (VS_REGNUM, 0, newval); |
| else if (name[0] == 'c' || name[0] == 'C') |
| write_comm_register (atoi (&name[1]), newval); |
| else if (STREQ (name, "vm")) |
| error ("can't assign to $vm"); |
| else |
| { |
| offset /= bitsize / 8; |
| write_vector_register (name[1] - '0', offset, newval); |
| } |
| } |
| |
| /* Print an integer value when no format was specified. gdb normally |
| prints these values in decimal, but the the leading 0x80000000 of |
| pointers produces intolerable 10-digit negative numbers. |
| If it looks like an address, print it in hex instead. */ |
| |
| decout (stream, type, val) |
| GDB_FILE *stream; |
| struct type *type; |
| LONGEST val; |
| { |
| long lv = val; |
| |
| switch (output_radix) |
| { |
| case 0: |
| if ((lv == val || (unsigned) lv == val) |
| && ((lv & 0xf0000000) == 0x80000000 |
| || ((lv & 0xf0000000) == 0xf0000000 && lv < STACK_END_ADDR))) |
| { |
| print_longest (stream, "x", 0, val); |
| return; |
| } |
| |
| case 10: |
| print_longest (stream, TYPE_UNSIGNED (type) ? "u" : "d", 0, val); |
| return; |
| |
| case 8: |
| print_longest (stream, "o", 0, val); |
| return; |
| |
| case 16: |
| print_longest (stream, "x", 0, val); |
| return; |
| } |
| } |
| |
| /* Change the default output radix to 10 or 16, or set it to 0 (heuristic). |
| This command is mostly obsolete now that the print command allows |
| formats to apply to aggregates, but is still handy occasionally. */ |
| |
| static void |
| set_base_command (arg) |
| char *arg; |
| { |
| int new_radix; |
| |
| if (!arg) |
| output_radix = 0; |
| else |
| { |
| new_radix = atoi (arg); |
| if (new_radix != 10 && new_radix != 16 && new_radix != 8) |
| error ("base must be 8, 10 or 16, or null"); |
| else output_radix = new_radix; |
| } |
| } |
| |
| /* Turn pipelining on or off in the inferior. */ |
| |
| static void |
| set_pipelining_command (arg) |
| char *arg; |
| { |
| if (!arg) |
| { |
| sequential = !sequential; |
| printf_filtered ("%s\n", sequential ? "off" : "on"); |
| } |
| else if (STREQ (arg, "on")) |
| sequential = 0; |
| else if (STREQ (arg, "off")) |
| sequential = 1; |
| else error ("valid args are `on', to allow instructions to overlap, or\n\ |
| `off', to prevent it and thereby pinpoint exceptions."); |
| } |
| |
| /* Enable, disable, or force parallel execution in the inferior. */ |
| |
| static void |
| set_parallel_command (arg) |
| char *arg; |
| { |
| struct rlimit rl; |
| int prevparallel = parallel; |
| |
| if (!strncmp (arg, "fixed", strlen (arg))) |
| parallel = 2; |
| else if (STREQ (arg, "on")) |
| parallel = 1; |
| else if (STREQ (arg, "off")) |
| parallel = 0; |
| else error ("valid args are `on', to allow multiple threads, or\n\ |
| `fixed', to force multiple threads, or\n\ |
| `off', to run with one thread only."); |
| |
| if ((prevparallel == 0) != (parallel == 0) && inferior_pid) |
| printf_filtered ("will take effect at next run.\n"); |
| |
| getrlimit (RLIMIT_CONCUR, &rl); |
| rl.rlim_cur = parallel ? rl.rlim_max : 1; |
| setrlimit (RLIMIT_CONCUR, &rl); |
| |
| if (inferior_pid) |
| set_fixed_scheduling (inferior_pid, parallel == 2); |
| } |
| |
| /* Add a new name for an existing command. */ |
| |
| static void |
| alias_command (arg) |
| char *arg; |
| { |
| static char *aliaserr = "usage is `alias NEW OLD', no args allowed"; |
| char *newname = arg; |
| struct cmd_list_element *new, *old; |
| |
| if (!arg) |
| error_no_arg ("newname oldname"); |
| |
| new = lookup_cmd (&arg, cmdlist, "", -1); |
| if (new && !strncmp (newname, new->name, strlen (new->name))) |
| { |
| newname = new->name; |
| if (!(*arg == '-' |
| || (*arg >= 'a' && *arg <= 'z') |
| || (*arg >= 'A' && *arg <= 'Z') |
| || (*arg >= '0' && *arg <= '9'))) |
| error (aliaserr); |
| } |
| else |
| { |
| arg = newname; |
| while (*arg == '-' |
| || (*arg >= 'a' && *arg <= 'z') |
| || (*arg >= 'A' && *arg <= 'Z') |
| || (*arg >= '0' && *arg <= '9')) |
| arg++; |
| if (*arg != ' ' && *arg != '\t') |
| error (aliaserr); |
| *arg = '\0'; |
| arg++; |
| } |
| |
| old = lookup_cmd (&arg, cmdlist, "", 0); |
| |
| if (*arg != '\0') |
| error (aliaserr); |
| |
| if (new && !strncmp (newname, new->name, strlen (new->name))) |
| { |
| char *tem; |
| if (new->class == (int) class_user || new->class == (int) class_alias) |
| tem = "Redefine command \"%s\"? "; |
| else |
| tem = "Really redefine built-in command \"%s\"? "; |
| if (!query (tem, new->name)) |
| error ("Command \"%s\" not redefined.", new->name); |
| } |
| |
| add_com (newname, class_alias, old->function, old->doc); |
| } |
| |
| |
| |
| /* Print the current thread number, and any threads with signals in the |
| queue. */ |
| |
| thread_info () |
| { |
| struct threadpid *p; |
| |
| if (have_inferior_p ()) |
| { |
| ps.pi_buffer = (char *) &comm_registers; |
| ps.pi_nbytes = sizeof comm_registers; |
| ps.pi_offset = 0; |
| ps.pi_thread = inferior_thread; |
| ioctl (inferior_fd, PIXRDCREGS, &ps); |
| } |
| |
| /* FIXME: stop_signal is from target.h but stop_sigcode is a |
| convex-specific thing. */ |
| printf_filtered ("Current thread %d stopped with signal %d.%d (%s).\n", |
| inferior_thread, stop_signal, stop_sigcode, |
| subsig_name (stop_signal, stop_sigcode)); |
| |
| for (p = signal_stack; p->pid; p--) |
| printf_filtered ("Thread %d stopped with signal %d.%d (%s).\n", |
| p->thread, p->signo, p->subsig, |
| subsig_name (p->signo, p->subsig)); |
| |
| if (iscrlbit (comm_registers.crctl.lbits.cc, 64+13)) |
| printf_filtered ("New thread start pc %#x\n", |
| (long) (comm_registers.crreg.pcpsw >> 32)); |
| } |
| |
| /* Return string describing a signal.subcode number */ |
| |
| static char * |
| subsig_name (signo, subcode) |
| int signo, subcode; |
| { |
| static char *subsig4[] = { |
| "error exit", "privileged instruction", "unknown", |
| "unknown", "undefined opcode", |
| 0}; |
| static char *subsig5[] = {0, |
| "breakpoint", "single step", "fork trap", "exec trap", "pfork trap", |
| "join trap", "idle trap", "last thread", "wfork trap", |
| "process breakpoint", "trap instruction", |
| 0}; |
| static char *subsig8[] = {0, |
| "int overflow", "int divide check", "float overflow", |
| "float divide check", "float underflow", "reserved operand", |
| "sqrt error", "exp error", "ln error", "sin error", "cos error", |
| 0}; |
| static char *subsig10[] = {0, |
| "invalid inward ring address", "invalid outward ring call", |
| "invalid inward ring return", "invalid syscall gate", |
| "invalid rtn frame length", "invalid comm reg address", |
| "invalid trap gate", |
| 0}; |
| static char *subsig11[] = {0, |
| "read access denied", "write access denied", "execute access denied", |
| "segment descriptor fault", "page table fault", "data reference fault", |
| "i/o access denied", "levt pte invalid", |
| 0}; |
| |
| static char **subsig_list[] = |
| {0, 0, 0, 0, subsig4, subsig5, 0, 0, subsig8, 0, subsig10, subsig11, 0}; |
| |
| int i; |
| char *p; |
| |
| if ((p = strsignal (signo)) == NULL) |
| p = "unknown"; |
| if (signo >= (sizeof subsig_list / sizeof *subsig_list) |
| || !subsig_list[signo]) |
| return p; |
| for (i = 1; subsig_list[signo][i]; i++) |
| if (i == subcode) |
| return subsig_list[signo][subcode]; |
| return p; |
| } |
| |
| |
| /* Print a compact display of thread status, essentially x/i $pc |
| for all active threads. */ |
| |
| static void |
| threadstat () |
| { |
| int t; |
| |
| for (t = 0; t < n_threads; t++) |
| if (thread_state[t] == PI_TALIVE) |
| { |
| printf_filtered ("%d%c %08x%c %d.%d ", t, |
| (t == inferior_thread ? '*' : ' '), thread_pc[t], |
| (thread_is_in_kernel[t] ? '#' : ' '), |
| thread_signal[t], thread_sigcode[t]); |
| print_insn (thread_pc[t], stdout); |
| printf_filtered ("\n"); |
| } |
| } |
| |
| /* Change the current thread to ARG. */ |
| |
| set_thread_command (arg) |
| char *arg; |
| { |
| int thread; |
| |
| if (!arg) |
| { |
| threadstat (); |
| return; |
| } |
| |
| thread = parse_and_eval_address (arg); |
| |
| if (thread < 0 || thread > n_threads || thread_state[thread] != PI_TALIVE) |
| error ("no such thread."); |
| |
| select_thread (thread); |
| |
| stop_pc = read_pc (); |
| flush_cached_frames (); |
| select_frame (get_current_frame (), 0); |
| print_stack_frame (selected_frame, selected_frame_level, -1); |
| } |
| |
| /* Here on CONT command; gdb's dispatch address is changed to come here. |
| Set global variable ALL_CONTINUE to tell resume() that it should |
| start up all threads, and that a thread switch will not blow gdb's |
| mind. */ |
| |
| static void |
| convex_cont_command (proc_count_exp, from_tty) |
| char *proc_count_exp; |
| int from_tty; |
| { |
| all_continue = 1; |
| cont_command (proc_count_exp, from_tty); |
| } |
| |
| /* Here on 1CONT command. Resume only the current thread. */ |
| |
| one_cont_command (proc_count_exp, from_tty) |
| char *proc_count_exp; |
| int from_tty; |
| { |
| cont_command (proc_count_exp, from_tty); |
| } |
| |
| /* Print the contents and lock bits of all communication registers, |
| or just register ARG if ARG is a communication register, |
| or the 3-word resource structure in memory at address ARG. */ |
| |
| comm_registers_info (arg) |
| char *arg; |
| { |
| int i, regnum; |
| |
| if (arg) |
| { |
| if (sscanf (arg, "$c%d", ®num) == 1) { |
| ; |
| } else if (sscanf (arg, "$C%d", ®num) == 1) { |
| ; |
| } else { |
| regnum = parse_and_eval_address (arg); |
| if (regnum > 0) |
| regnum &= ~0x8000; |
| } |
| |
| if (regnum >= 64) |
| error ("%s: invalid register name.", arg); |
| |
| /* if we got a (user) address, examine the resource struct there */ |
| |
| if (regnum < 0) |
| { |
| static int buf[3]; |
| read_memory (regnum, buf, sizeof buf); |
| printf_filtered ("%08x %08x%08x%s\n", regnum, buf[1], buf[2], |
| buf[0] & 0xff ? " locked" : ""); |
| return; |
| } |
| } |
| |
| ps.pi_buffer = (char *) &comm_registers; |
| ps.pi_nbytes = sizeof comm_registers; |
| ps.pi_offset = 0; |
| ps.pi_thread = inferior_thread; |
| ioctl (inferior_fd, PIXRDCREGS, &ps); |
| |
| for (i = 0; i < 64; i++) |
| if (!arg || i == regnum) |
| printf_filtered ("%2d 0x8%03x %016llx%s\n", i, i, |
| comm_registers.crreg.r4[i], |
| (iscrlbit (comm_registers.crctl.lbits.cc, i) |
| ? " locked" : "")); |
| } |
| |
| /* Print the psw */ |
| |
| static void |
| psw_info (arg) |
| char *arg; |
| { |
| struct pswbit |
| { |
| int bit; |
| int pos; |
| char *text; |
| }; |
| |
| static struct pswbit pswbit[] = |
| { |
| { 0x80000000, -1, "A carry" }, |
| { 0x40000000, -1, "A integer overflow" }, |
| { 0x20000000, -1, "A zero divide" }, |
| { 0x10000000, -1, "Integer overflow enable" }, |
| { 0x08000000, -1, "Trace" }, |
| { 0x06000000, 25, "Frame length" }, |
| { 0x01000000, -1, "Sequential" }, |
| { 0x00800000, -1, "S carry" }, |
| { 0x00400000, -1, "S integer overflow" }, |
| { 0x00200000, -1, "S zero divide" }, |
| { 0x00100000, -1, "Zero divide enable" }, |
| { 0x00080000, -1, "Floating underflow" }, |
| { 0x00040000, -1, "Floating overflow" }, |
| { 0x00020000, -1, "Floating reserved operand" }, |
| { 0x00010000, -1, "Floating zero divide" }, |
| { 0x00008000, -1, "Floating error enable" }, |
| { 0x00004000, -1, "Floating underflow enable" }, |
| { 0x00002000, -1, "IEEE" }, |
| { 0x00001000, -1, "Sequential stores" }, |
| { 0x00000800, -1, "Intrinsic error" }, |
| { 0x00000400, -1, "Intrinsic error enable" }, |
| { 0x00000200, -1, "Trace thread creates" }, |
| { 0x00000100, -1, "Thread init trap" }, |
| { 0x000000e0, 5, "Reserved" }, |
| { 0x0000001f, 0, "Intrinsic error code" }, |
| {0, 0, 0}, |
| }; |
| |
| long psw; |
| struct pswbit *p; |
| |
| if (arg) |
| psw = parse_and_eval_address (arg); |
| else |
| psw = read_register (PS_REGNUM); |
| |
| for (p = pswbit; p->bit; p++) |
| { |
| if (p->pos < 0) |
| printf_filtered ("%08x %s %s\n", p->bit, |
| (psw & p->bit) ? "yes" : "no ", p->text); |
| else |
| printf_filtered ("%08x %3d %s\n", p->bit, |
| (psw & p->bit) >> p->pos, p->text); |
| } |
| } |
| |
| #include "symtab.h" |
| |
| /* reg (fmt_field, inst_field) -- |
| the {first,second,third} operand of instruction as fmt_field = [ijk] |
| gets the value of the field from the [ijk] position of the instruction */ |
| |
| #define reg(a,b) ((char (*)[3])(op[fmt->a]))[inst.f0.b] |
| |
| /* lit (fmt_field) -- field [ijk] is a literal (PSW, VL, eg) */ |
| |
| #define lit(i) op[fmt->i] |
| |
| /* aj[j] -- name for A register j */ |
| |
| #define aj ((char (*)[3])(op[A])) |
| |
| union inst { |
| struct { |
| unsigned : 7; |
| unsigned i : 3; |
| unsigned j : 3; |
| unsigned k : 3; |
| unsigned : 16; |
| unsigned : 32; |
| } f0; |
| struct { |
| unsigned : 8; |
| unsigned indir : 1; |
| unsigned len : 1; |
| unsigned j : 3; |
| unsigned k : 3; |
| unsigned : 16; |
| unsigned : 32; |
| } f1; |
| unsigned char byte[8]; |
| unsigned short half[4]; |
| char signed_byte[8]; |
| short signed_half[4]; |
| }; |
| |
| struct opform { |
| int mask; /* opcode mask */ |
| int shift; /* opcode align */ |
| struct formstr *formstr[3]; /* ST, E0, E1 */ |
| }; |
| |
| struct formstr { |
| unsigned lop:8, rop:5; /* opcode */ |
| unsigned fmt:5; /* inst format */ |
| unsigned i:5, j:5, k:2; /* operand formats */ |
| }; |
| |
| #include "opcode/convex.h" |
| |
| CONST unsigned char formdecode [] = { |
| 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, |
| 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, |
| 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, |
| 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, |
| 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, |
| 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, |
| 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3, |
| 4,4,4,4,4,4,4,4,5,5,5,5,6,6,7,8, |
| 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| }; |
| |
| CONST struct opform opdecode[] = { |
| 0x7e00, 9, format0, e0_format0, e1_format0, |
| 0x3f00, 8, format1, e0_format1, e1_format1, |
| 0x1fc0, 6, format2, e0_format2, e1_format2, |
| 0x0fc0, 6, format3, e0_format3, e1_format3, |
| 0x0700, 8, format4, e0_format4, e1_format4, |
| 0x03c0, 6, format5, e0_format5, e1_format5, |
| 0x01f8, 3, format6, e0_format6, e1_format6, |
| 0x00f8, 3, format7, e0_format7, e1_format7, |
| 0x0000, 0, formatx, formatx, formatx, |
| 0x0f80, 7, formatx, formatx, formatx, |
| 0x0f80, 7, formatx, formatx, formatx, |
| }; |
| |
| /* Print the instruction at address MEMADDR in debugged memory, |
| on STREAM. Returns length of the instruction, in bytes. */ |
| |
| int |
| convex_print_insn (memaddr, stream) |
| CORE_ADDR memaddr; |
| FILE *stream; |
| { |
| union inst inst; |
| struct formstr *fmt; |
| register int format, op1, pfx; |
| int l; |
| |
| read_memory (memaddr, &inst, sizeof inst); |
| |
| /* Remove and note prefix, if present */ |
| |
| pfx = inst.half[0]; |
| if ((pfx & 0xfff0) == 0x7ef0) |
| { |
| pfx = ((pfx >> 3) & 1) + 1; |
| *(long long *) &inst = *(long long *) &inst.half[1]; |
| } |
| else pfx = 0; |
| |
| /* Split opcode into format.op1 and look up in appropriate table */ |
| |
| format = formdecode[inst.byte[0]]; |
| op1 = (inst.half[0] & opdecode[format].mask) >> opdecode[format].shift; |
| if (format == 9) |
| { |
| if (pfx) |
| fmt = formatx; |
| else if (inst.f1.j == 0) |
| fmt = &format1a[op1]; |
| else if (inst.f1.j == 1) |
| fmt = &format1b[op1]; |
| else |
| fmt = formatx; |
| } |
| else |
| fmt = &opdecode[format].formstr[pfx][op1]; |
| |
| /* Print it */ |
| |
| if (fmt->fmt == xxx) |
| { |
| /* noninstruction */ |
| fprintf (stream, "0x%04x", pfx ? pfx : inst.half[0]); |
| return 2; |
| } |
| |
| if (pfx) |
| pfx = 2; |
| |
| fprintf (stream, "%s%s%s", lop[fmt->lop], rop[fmt->rop], |
| &" "[strlen(lop[fmt->lop]) + strlen(rop[fmt->rop])]); |
| |
| switch (fmt->fmt) |
| { |
| case rrr: /* three register */ |
| fprintf (stream, "%s,%s,%s", reg(i,i), reg(j,j), reg(k,k)); |
| return pfx + 2; |
| |
| case rr: /* two register */ |
| fprintf (stream, "%s,%s", reg(i,j), reg(j,k)); |
| return pfx + 2; |
| |
| case rxr: /* two register, reversed i and j fields */ |
| fprintf (stream, "%s,%s", reg(i,k), reg(j,j)); |
| return pfx + 2; |
| |
| case r: /* one register */ |
| fprintf (stream, "%s", reg(i,k)); |
| return pfx + 2; |
| |
| case nops: /* no operands */ |
| return pfx + 2; |
| |
| case nr: /* short immediate, one register */ |
| fprintf (stream, "#%d,%s", inst.f0.j, reg(i,k)); |
| return pfx + 2; |
| |
| case pcrel: /* pc relative */ |
| print_address (memaddr + 2 * inst.signed_byte[1], stream); |
| return pfx + 2; |
| |
| case lr: /* literal, one register */ |
| fprintf (stream, "%s,%s", lit(i), reg(j,k)); |
| return pfx + 2; |
| |
| case rxl: /* one register, literal */ |
| fprintf (stream, "%s,%s", reg(i,k), lit(j)); |
| return pfx + 2; |
| |
| case rlr: /* register, literal, register */ |
| fprintf (stream, "%s,%s,%s", reg(i,j), lit(j), reg(k,k)); |
| return pfx + 2; |
| |
| case rrl: /* register, register, literal */ |
| fprintf (stream, "%s,%s,%s", reg(i,j), reg(j,k), lit(k)); |
| return pfx + 2; |
| |
| case iml: /* immediate, literal */ |
| if (inst.f1.len) |
| { |
| fprintf (stream, "#%#x,%s", |
| (inst.signed_half[1] << 16) + inst.half[2], lit(i)); |
| return pfx + 6; |
| } |
| else |
| { |
| fprintf (stream, "#%d,%s", inst.signed_half[1], lit(i)); |
| return pfx + 4; |
| } |
| |
| case imr: /* immediate, register */ |
| if (inst.f1.len) |
| { |
| fprintf (stream, "#%#x,%s", |
| (inst.signed_half[1] << 16) + inst.half[2], reg(i,k)); |
| return pfx + 6; |
| } |
| else |
| { |
| fprintf (stream, "#%d,%s", inst.signed_half[1], reg(i,k)); |
| return pfx + 4; |
| } |
| |
| case a1r: /* memory, register */ |
| l = print_effa (inst, stream); |
| fprintf (stream, ",%s", reg(i,k)); |
| return pfx + l; |
| |
| case a1l: /* memory, literal */ |
| l = print_effa (inst, stream); |
| fprintf (stream, ",%s", lit(i)); |
| return pfx + l; |
| |
| case a2r: /* register, memory */ |
| fprintf (stream, "%s,", reg(i,k)); |
| return pfx + print_effa (inst, stream); |
| |
| case a2l: /* literal, memory */ |
| fprintf (stream, "%s,", lit(i)); |
| return pfx + print_effa (inst, stream); |
| |
| case a3: /* memory */ |
| return pfx + print_effa (inst, stream); |
| |
| case a4: /* system call */ |
| l = 29; goto a4a5; |
| case a5: /* trap */ |
| l = 27; |
| a4a5: |
| if (inst.f1.len) |
| { |
| unsigned int m = (inst.signed_half[1] << 16) + inst.half[2]; |
| fprintf (stream, "#%d,#%d", m >> l, m & (-1 >> (32-l))); |
| return pfx + 6; |
| } |
| else |
| { |
| unsigned int m = inst.signed_half[1]; |
| fprintf (stream, "#%d,#%d", m >> l, m & (-1 >> (32-l))); |
| return pfx + 4; |
| } |
| } |
| } |
| |
| |
| /* print effective address @nnn(aj), return instruction length */ |
| |
| int print_effa (inst, stream) |
| union inst inst; |
| FILE *stream; |
| { |
| int n, l; |
| |
| if (inst.f1.len) |
| { |
| n = (inst.signed_half[1] << 16) + inst.half[2]; |
| l = 6; |
| } |
| else |
| { |
| n = inst.signed_half[1]; |
| l = 4; |
| } |
| |
| if (inst.f1.indir) |
| printf ("@"); |
| |
| if (!inst.f1.j) |
| { |
| print_address (n, stream); |
| return l; |
| } |
| |
| fprintf (stream, (n & 0xf0000000) == 0x80000000 ? "%#x(%s)" : "%d(%s)", |
| n, aj[inst.f1.j]); |
| |
| return l; |
| } |
| |
| |
| void |
| _initialize_convex_dep () |
| { |
| add_com ("alias", class_support, alias_command, |
| "Add a new name for an existing command."); |
| |
| add_cmd ("base", class_vars, set_base_command, |
| "Change the integer output radix to 8, 10 or 16\n\ |
| or use just `set base' with no args to return to the ad-hoc default,\n\ |
| which is 16 for integers that look like addresses, 10 otherwise.", |
| &setlist); |
| |
| add_cmd ("pipeline", class_run, set_pipelining_command, |
| "Enable or disable overlapped execution of instructions.\n\ |
| With `set pipe off', exceptions are reported with\n\ |
| $pc pointing at the instruction after the faulting one.\n\ |
| The default is `set pipe on', which runs faster.", |
| &setlist); |
| |
| add_cmd ("parallel", class_run, set_parallel_command, |
| "Enable or disable multi-threaded execution of parallel code.\n\ |
| `set parallel off' means run the program on a single CPU.\n\ |
| `set parallel fixed' means run the program with all CPUs assigned to it.\n\ |
| `set parallel on' means run the program on any CPUs that are available.", |
| &setlist); |
| |
| add_com ("1cont", class_run, one_cont_command, |
| "Continue the program, activating only the current thread.\n\ |
| Args are the same as the `cont' command."); |
| |
| add_com ("thread", class_run, set_thread_command, |
| "Change the current thread, the one under scrutiny and control.\n\ |
| With no arg, show the active threads, the current one marked with *."); |
| |
| add_info ("threads", thread_info, |
| "List status of active threads."); |
| |
| add_info ("comm-registers", comm_registers_info, |
| "List communication registers and their contents.\n\ |
| A communication register name as argument means describe only that register.\n\ |
| An address as argument means describe the resource structure at that address.\n\ |
| `Locked' means that the register has been sent to but not yet received from."); |
| |
| add_info ("psw", psw_info, |
| "Display $ps, the processor status word, bit by bit.\n\ |
| An argument means display that value's interpretation as a psw."); |
| |
| add_cmd ("convex", no_class, 0, "Convex-specific commands.\n\ |
| 32-bit registers $pc $ps $sp $ap $fp $a1-5 $s0-7 $v0-7 $vl $vs $vm $c0-63\n\ |
| 64-bit registers $S0-7 $V0-7 $C0-63\n\ |
| \n\ |
| info threads display info on stopped threads waiting to signal\n\ |
| thread display list of active threads\n\ |
| thread N select thread N (its registers, stack, memory, etc.)\n\ |
| step, next, etc step selected thread only\n\ |
| 1cont continue selected thread only\n\ |
| cont continue all threads\n\ |
| info comm-registers display contents of comm register(s) or a resource struct\n\ |
| info psw display processor status word $ps\n\ |
| set base N change integer radix used by `print' without a format\n\ |
| set pipeline off exceptions are precise, $pc points after the faulting insn\n\ |
| set pipeline on normal mode, $pc is somewhere ahead of faulting insn\n\ |
| set parallel off program runs on a single CPU\n\ |
| set parallel fixed all CPUs are assigned to the program\n\ |
| set parallel on normal mode, parallel execution on random available CPUs\n\ |
| ", |
| &cmdlist); |
| |
| } |