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Diffstat (limited to 'gdb/convex-dep.c')
| -rw-r--r-- | gdb/convex-dep.c | 1948 |
1 files changed, 0 insertions, 1948 deletions
diff --git a/gdb/convex-dep.c b/gdb/convex-dep.c deleted file mode 100644 index f09bee1..0000000 --- a/gdb/convex-dep.c +++ /dev/null @@ -1,1948 +0,0 @@ -/* Convex stuff for GDB. - Copyright (C) 1990 Free Software Foundation, Inc. - -This file is part of GDB. - -GDB 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 1, or (at your option) -any later version. - -GDB 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 GDB; see the file COPYING. If not, write to -the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ - -#include <stdio.h> -#include "defs.h" -#include "param.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 <a.out.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 <sys/stat.h> -#include <sys/mman.h> - -#include <convex/vmparam.h> -#include <convex/filehdr.h> -#include <convex/opthdr.h> -#include <convex/scnhdr.h> -#include <convex/core.h> - -/* Per-thread data, read from the inferior at each stop and written - back at each resume. */ - -/* Number of active threads. - Tables are valid for thread numbers less than this. */ - -static int n_threads; - -#define MAXTHREADS 8 - -/* Thread state. The remaining data is valid only if this is PI_TALIVE. */ - -static int thread_state[MAXTHREADS]; - -/* Stop pc, signal, signal subcode */ - -static int thread_pc[MAXTHREADS]; -static int thread_signal[MAXTHREADS]; -static int thread_sigcode[MAXTHREADS]; - -/* Thread registers. - If thread is selected, the regs are in registers[] instead. */ - -static char thread_regs[MAXTHREADS][REGISTER_BYTES]; - -/* 1 if the top frame on the thread's stack was a context frame, - meaning that the kernel is up to something and we should not - touch the thread at all except to resume it. */ - -static char thread_is_in_kernel[MAXTHREADS]; - -/* The currently selected thread's number. */ - -static int inferior_thread; - -/* Inferior process's file handle and a process control block - to feed args to ioctl with. */ - -static int inferior_fd; -static struct pcntl ps; - -/* SOFF file headers for exec or core file. */ - -static FILEHDR filehdr; -static OPTHDR opthdr; -static SCNHDR scnhdr; - -/* Address maps constructed from section headers of exec and core files. - Defines process address -> file address translation. */ - -struct pmap -{ - long mem_addr; /* process start address */ - long mem_end; /* process end+1 address */ - long file_addr; /* file start address */ - long thread; /* -1 shared; 0,1,... thread-local */ - long type; /* S_TEXT S_DATA S_BSS S_TBSS etc */ - long which; /* used to sort map for info files */ -}; - -static int n_exec, n_core; -static struct pmap exec_map[100]; -static struct pmap core_map[100]; - -/* Offsets in the core file of core_context and core_tcontext blocks. */ - -static int context_offset; -static int tcontext_offset[MAXTHREADS]; - -/* Core file control blocks. */ - -static struct core_context_v70 c; -static struct core_tcontext_v70 tc; -static struct user u; -static thread_t th; -static proc_t pr; - -/* The registers of the currently selected thread. */ - -extern char registers[REGISTER_BYTES]; - -/* Vector and communication registers from core dump or from inferior. - These are read on demand, ie, not normally valid. */ - -static struct vecst vector_registers; -static struct creg_ctx comm_registers; - -/* Flag, set on a vanilla CONT command and cleared when the inferior - is continued. */ - -static int all_continue; - -/* Flag, set when the inferior is continued by a vanilla CONT command, - cleared if it is continued for any other purpose. */ - -static int thread_switch_ok; - -/* Stack of signals recieved from threads but not yet delivered to gdb. */ - -struct threadpid -{ - int pid; - int thread; - int signo; - int subsig; - int pc; -}; - -static struct threadpid signal_stack_bot[100]; -static struct threadpid *signal_stack = signal_stack_bot; - -/* How to detect empty stack -- bottom frame is all zero. */ - -#define signal_stack_is_empty() (signal_stack->pid == 0) - -/* Mode controlled by SET PIPE command, controls the psw SEQ bit - which forces each instruction to complete before the next one starts. */ - -static int sequential = 0; - -/* Mode controlled by the SET PARALLEL command. Values are: - 0 concurrency limit 1 thread, dynamic scheduling - 1 no concurrency limit, dynamic scheduling - 2 no concurrency limit, fixed scheduling */ - -static int parallel = 1; - -/* Mode controlled by SET BASE command, output radix for unformatted - integer typeout, as in argument lists, aggregates, and so on. - Zero means guess whether it's an address (hex) or not (decimal). */ - -static int output_radix = 0; - -/* Signal subcode at last thread stop. */ - -static int stop_sigcode; - -/* Hack, see wait() below. */ - -static int exec_trap_timer; - -/* Chain containing all defined commands. */ - -extern struct cmd_list_element *cmdlist; - -/* Chain containing all defined set subcommands */ - -extern struct cmd_list_element *setlist; - -/* Hook for `exec_file_command' command to call. */ - -extern void (*exec_file_display_hook) (); - -/* File names of core file and executable file. */ - -extern char *corefile; -extern char *execfile; - -/* Descriptors on which core file and executable file are open. - Note that the execchan is closed when an inferior is created - and reopened if the inferior dies or is killed. */ - -extern int corechan; -extern int execchan; - -/* Last modification time of executable file. - Also used in source.c to compare against mtime of a source file. */ - -extern int exec_mtime; - -/* Virtual addresses of bounds of the two areas of memory in the core file. - NB: These variables are set to plausible but useless values on convex. */ - -extern CORE_ADDR data_start; -extern CORE_ADDR data_end; -extern CORE_ADDR stack_start; -extern CORE_ADDR stack_end; - -/* Virtual addresses of bounds of two areas of memory in the exec file. - NB: Only text_start and text_end have meaningful values on convex. */ - -extern CORE_ADDR text_start; -extern CORE_ADDR text_end; - -extern CORE_ADDR exec_data_start; -extern CORE_ADDR exec_data_end; - -/* Address in executable file of start of text area data. */ - -extern int text_offset; - -/* Address in executable file of start of data area data. */ - -extern int exec_data_offset; - -/* Address in core file of start of data area data. */ - -extern int data_offset; - -/* Address in core file of start of stack area data. */ - -extern int stack_offset; - -/* a.out header saved in core file. */ - -extern struct exec core_aouthdr; - -/* a.out header of exec file. */ - -extern struct exec exec_aouthdr; - -/* Routine to check for exec-core mismatch. */ - -extern void validate_files (); - -/* Nonzero if we are debugging an attached outside process - rather than an inferior. */ - -extern int attach_flag; - - - -static struct type *vector_type (); -static long *read_vector_register (); -static long *read_vector_register_1 (); -static void write_vector_register (); -static REGISTER_TYPE read_comm_register (); -static void write_comm_register (); -static void convex_cont_command (); -static void thread_continue (); -static void select_thread (); -static void scan_stack (); -static void set_fixed_scheduling (); -static char *subsig_name (); -static void psw_info (); -static sig_noop (); -static ptr_cmp (); - -extern char *sys_siglist[]; -extern int errno; - -/* Execute ptrace. Convex V7 replaced ptrace with pattach. - Allow ptrace (0) as a no-op. */ - -int -call_ptrace (request, pid, procaddr, buf) - int request, pid, procaddr, buf; -{ - if (request == 0) - return; - error ("no ptrace"); -} - -/* Replacement for system execle routine. - Convert it to an equivalent exect, which pattach insists on. */ - -execle (name, argv) - char *name, *argv; -{ - char ***envp = (char ***) &argv; - while (*envp++) ; - - signal (SIGTRAP, sig_noop); - exect (name, &argv, *envp); -} - -/* Stupid handler for stupid trace trap that otherwise causes - startup to stupidly hang. */ - -static sig_noop () -{} - -/* Read registers from inferior into registers[] array. - For convex, they are already there, read in when the inferior stops. */ - -void -fetch_inferior_registers () -{ -} - -/* Store our register values back into the inferior. - For Convex, do this only once, right before resuming inferior. */ - -store_inferior_registers (regno) - int regno; -{ -} - -/* Copy LEN bytes from inferior's memory starting at MEMADDR - to debugger memory starting at MYADDR. - On failure (cannot read from inferior, usually because address is out - of bounds) returns the value of errno. */ - -int -read_inferior_memory (memaddr, myaddr, len) - CORE_ADDR memaddr; - char *myaddr; - int len; -{ - errno = 0; - while (len > 0) - { - /* little-known undocumented max request size */ - int i = (len < 12288) ? len : 12288; - - lseek (inferior_fd, memaddr, 0); - read (inferior_fd, myaddr, i); - - memaddr += i; - myaddr += i; - len -= i; - } - if (errno) - bzero (myaddr, len); - return errno; -} - -/* Copy LEN bytes of data from debugger memory at MYADDR - to inferior's memory at MEMADDR. - Returns errno on failure (cannot write the inferior) */ - -int -write_inferior_memory (memaddr, myaddr, len) - CORE_ADDR memaddr; - char *myaddr; - int len; -{ - errno = 0; - lseek (inferior_fd, memaddr, 0); - write (inferior_fd, myaddr, len); - return errno; -} - -/* Here from create_inferior when the inferior process has been created - and started up. We must do a pattach to grab it for debugging. - - Also, intercept the CONT command by altering its dispatch address. */ - -create_inferior_hook (pid) - int pid; -{ - static char cont[] = "cont"; - static char cont1[] = "c"; - char *linep = cont; - char *linep1 = cont1; - char **line = &linep; - char **line1 = &linep1; - struct cmd_list_element *c; - - c = lookup_cmd (line, cmdlist, "", 0); - c->function = convex_cont_command; - c = lookup_cmd (line1, cmdlist, "", 0); - c->function = convex_cont_command; - - inferior_fd = pattach (pid, O_EXCL); - if (inferior_fd < 0) - perror_with_name ("pattach"); - inferior_thread = 0; - set_fixed_scheduling (pid, parallel == 2); -} - -/* Attach process PID for debugging. */ - -attach (pid) - int pid; -{ - int fd = pattach (pid, O_EXCL); - if (fd < 0) - perror_with_name ("pattach"); - attach_flag = 1; - /* wait for strange kernel reverberations to go away */ - sleep (1); - - setpgrp (pid, pid); - - inferior_fd = fd; - inferior_thread = 0; - return pid; -} - -/* Stop debugging the process whose number is PID - and continue it with signal number SIGNAL. - SIGNAL = 0 means just continue it. */ - -void -detach (signal) - int signal; -{ - signal_stack = signal_stack_bot; - thread_continue (-1, 0, signal); - ioctl (inferior_fd, PIXDETACH, &ps); - close (inferior_fd); - inferior_fd = 0; - attach_flag = 0; -} - -/* Kill off the inferior process. */ - -kill_inferior () -{ - if (remote_debugging) - return; - if (inferior_pid == 0) - return; - ioctl (inferior_fd, PIXTERMINATE, 0); - wait (0); - inferior_died (); -} - -/* This is used when GDB is exiting. It gives less chance of error.*/ - -kill_inferior_fast () -{ - if (remote_debugging) - return; - if (inferior_pid == 0) - return; - ioctl (inferior_fd, PIXTERMINATE, 0); - wait (0); -} - -/* Read vector register REG, and return a pointer to the value. */ - -static long * -read_vector_register (reg) - int reg; -{ - if (have_inferior_p ()) - { - errno = 0; - ps.pi_buffer = (char *) &vector_registers; - ps.pi_nbytes = sizeof vector_registers; - ps.pi_offset = 0; - ps.pi_thread = inferior_thread; - ioctl (inferior_fd, PIXRDVREGS, &ps); - if (errno) - bzero (&vector_registers, sizeof vector_registers); - } - else if (corechan >= 0) - { - lseek (corechan, tcontext_offset[inferior_thread], 0); - if (myread (corechan, &tc, sizeof tc) < 0) - perror_with_name (corefile); - lseek (corechan, tc.core_thread_p, 0); - if (myread (corechan, &th, sizeof th) < 0) - perror_with_name (corefile); - lseek (corechan, tc.core_vregs_p, 0); - if (myread (corechan, &vector_registers, 16*128) < 0) - perror_with_name (corefile); - vector_registers.vm[0] = th.t_vect_ctx.vc_vm[0]; - vector_registers.vm[1] = th.t_vect_ctx.vc_vm[1]; - vector_registers.vls = th.t_vect_ctx.vc_vls; - } - - return read_vector_register_1 (reg); -} - -/* Return a pointer to vector register REG, which must already have been - fetched from the inferior or core file. */ - -static long * -read_vector_register_1 (reg) - int reg; -{ - switch (reg) - { - case VM_REGNUM: - return (long *) vector_registers.vm; - case VS_REGNUM: - return (long *) &vector_registers.vls; - case VL_REGNUM: - return 1 + (long *) &vector_registers.vls; - default: - return (long *) &vector_registers.vr[reg]; - } -} - -/* Write vector register REG, element ELEMENT, new value VAL. - NB: must use read-modify-write on the entire vector state, - since pattach does not do offsetted writes correctly. */ - -static void -write_vector_register (reg, element, val) - int reg, element; - REGISTER_TYPE val; -{ - if (have_inferior_p ()) - { - errno = 0; - ps.pi_thread = inferior_thread; - ps.pi_offset = 0; - ps.pi_buffer = (char *) &vector_registers; - ps.pi_nbytes = sizeof vector_registers; - - ioctl (inferior_fd, PIXRDVREGS, &ps); - - switch (reg) - { - case VL_REGNUM: - vector_registers.vls = - (vector_registers.vls & 0xffffffff00000000LL) - + (unsigned long) val; - break; - - case VS_REGNUM: - vector_registers.vls = - (val << 32) + (unsigned long) vector_registers.vls; - break; - - default: - vector_registers.vr[reg].el[element] = val; - break; - } - - ioctl (inferior_fd, PIXWRVREGS, &ps); - - if (errno) - perror_with_name ("writing vector register"); - } -} - -/* Return the contents of communication register NUM. */ - -static REGISTER_TYPE -read_comm_register (num) - int num; -{ - 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); - } - return comm_registers.crreg.r4[num]; -} - -/* Store a new value VAL into communication register NUM. - NB: Must use read-modify-write on the whole comm register set - since pattach does not do offsetted writes correctly. */ - -static void -write_comm_register (num, val) - int num; - REGISTER_TYPE val; -{ - 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); - comm_registers.crreg.r4[num] = val; - ioctl (inferior_fd, PIXWRCREGS, &ps); - } -} - -/* Resume execution of the inferior process. - If STEP is nonzero, single-step it. - If SIGNAL is nonzero, give it that signal. */ - -void -resume (step, signal) - int step; - int signal; -{ - errno = 0; - if (remote_debugging) - remote_resume (step, signal); - else - if (step || signal) - thread_continue (inferior_thread, step, signal); - else - thread_continue (-1, 0, 0); -} - -/* Maybe resume some threads. - THREAD is which thread to resume, or -1 to resume them all. - STEP and SIGNAL are as in resume. - - Global variable ALL_CONTINUE is set when we are here to do a - `cont' command; otherwise we may be doing `finish' or a call or - something else that will not tolerate an automatic thread switch. - - If there are stopped threads waiting to deliver signals, and - ALL_CONTINUE, do not actually resume anything. gdb will do a wait - and see one of the stopped threads in the queue. */ - -static void -thread_continue (thread, step, signal) - int thread, step, signal; -{ - int n; - - /* If we are to continue all threads, but not for the CONTINUE command, - pay no attention and continue only the selected thread. */ - - if (thread < 0 && ! all_continue) - thread = inferior_thread; - - /* If we are not stepping, we have now executed the continue part - of a CONTINUE command. */ - - if (! step) - all_continue = 0; - - /* Allow wait() to switch threads if this is an all-out continue. */ - - thread_switch_ok = thread < 0; - - /* If there are threads queued up, don't resume. */ - - if (thread_switch_ok && ! signal_stack_is_empty ()) - return; - - /* OK, do it. */ - - for (n = 0; n < n_threads; n++) - if (thread_state[n] == PI_TALIVE) - { - select_thread (n); - - if ((thread < 0 || n == thread) && ! thread_is_in_kernel[n]) - { - /* Blam the trace bits in the stack's saved psws to match - the desired step mode. This is required so that - single-stepping a return doesn't restore a psw with a - clear trace bit and fly away, and conversely, - proceeding through a return in a routine that was - stepped into doesn't cause a phantom break by restoring - a psw with the trace bit set. */ - scan_stack (PSW_T_BIT, step); - scan_stack (PSW_S_BIT, sequential); - } - - ps.pi_buffer = registers; - ps.pi_nbytes = REGISTER_BYTES; - ps.pi_offset = 0; - ps.pi_thread = n; - if (! thread_is_in_kernel[n]) - if (ioctl (inferior_fd, PIXWRREGS, &ps)) - perror_with_name ("PIXWRREGS"); - - if (thread < 0 || n == thread) - { - ps.pi_pc = 1; - ps.pi_signo = signal; - if (ioctl (inferior_fd, step ? PIXSTEP : PIXCONTINUE, &ps) < 0) - perror_with_name ("PIXCONTINUE"); - } - } - - if (ioctl (inferior_fd, PIXRUN, &ps) < 0) - perror_with_name ("PIXRUN"); -} - -/* Replacement for system wait routine. - - The system wait returns with one or more threads stopped by - signals. Put stopped threads on a stack and return them one by - one, so that it appears that wait returns one thread at a time. - - Global variable THREAD_SWITCH_OK is set when gdb can tolerate wait - returning a new thread. If it is false, then only one thread is - running; we will do a real wait, the thread will do something, and - we will return that. */ - -pid_t -wait (w) - union wait *w; -{ - int pid; - - if (!w) - return wait3 (0, 0, 0); - - /* Do a real wait if we were told to, or if there are no queued threads. */ - - if (! thread_switch_ok || signal_stack_is_empty ()) - { - int thread; - - pid = wait3 (w, 0, 0); - - if (!WIFSTOPPED (*w) || pid != inferior_pid) - return pid; - - /* The inferior has done something and stopped. Read in all the - threads' registers, and queue up any signals that happened. */ - - if (ioctl (inferior_fd, PIXGETTHCOUNT, &ps) < 0) - perror_with_name ("PIXGETTHCOUNT"); - - n_threads = ps.pi_othdcnt; - for (thread = 0; thread < n_threads; thread++) - { - ps.pi_thread = thread; - if (ioctl (inferior_fd, PIXGETSUBCODE, &ps) < 0) - perror_with_name ("PIXGETSUBCODE"); - thread_state[thread] = ps.pi_otstate; - - if (ps.pi_otstate == PI_TALIVE) - { - select_thread (thread); - ps.pi_buffer = registers; - ps.pi_nbytes = REGISTER_BYTES; - ps.pi_offset = 0; - ps.pi_thread = thread; - if (ioctl (inferior_fd, PIXRDREGS, &ps) < 0) - perror_with_name ("PIXRDREGS"); - - thread_pc[thread] = read_pc (); - thread_signal[thread] = ps.pi_osigno; - thread_sigcode[thread] = ps.pi_osigcode; - - /* If the thread's stack has a context frame - on top, something fucked is going on. I do not - know what, but do I know this: the only thing you - can do with such a thread is continue it. */ - - thread_is_in_kernel[thread] = - ((read_register (PS_REGNUM) >> 25) & 3) == 0; - - /* Signals push an extended frame and then fault - with a ridiculous pc. Pop the frame. */ - - if (thread_pc[thread] > STACK_END_ADDR) - { - POP_FRAME; - if (is_break_pc (thread_pc[thread])) - thread_pc[thread] = read_pc () - 2; - else - thread_pc[thread] = read_pc (); - write_register (PC_REGNUM, thread_pc[thread]); - } - - if (ps.pi_osigno || ps.pi_osigcode) - { - signal_stack++; - signal_stack->pid = pid; - signal_stack->thread = thread; - signal_stack->signo = thread_signal[thread]; - signal_stack->subsig = thread_sigcode[thread]; - signal_stack->pc = thread_pc[thread]; - } - - /* The following hackery is caused by a unix 7.1 feature: - the inferior's fixed scheduling mode is cleared when - it execs the shell (since the shell is not a parallel - program). So, note the 5.4 trap we get when - the shell does its exec, then catch the 5.0 trap - that occurs when the debuggee starts, and set fixed - scheduling mode properly. */ - - if (ps.pi_osigno == 5 && ps.pi_osigcode == 4) - exec_trap_timer = 1; - else - exec_trap_timer--; - - if (ps.pi_osigno == 5 && exec_trap_timer == 0) - set_fixed_scheduling (pid, parallel == 2); - } - } - - if (signal_stack_is_empty ()) - error ("no active threads?!"); - } - - /* Select the thread that stopped, and return *w saying why. */ - - select_thread (signal_stack->thread); - - stop_signal = signal_stack->signo; - stop_sigcode = signal_stack->subsig; - - WSETSTOP (*w, signal_stack->signo); - w->w_thread = signal_stack->thread; - return (signal_stack--)->pid; -} - -/* Select thread THREAD -- its registers, stack, per-thread memory. - This is the only routine that may assign to inferior_thread - or thread_regs[]. */ - -static void -select_thread (thread) - int thread; -{ - if (thread == inferior_thread) - return; - - bcopy (registers, thread_regs[inferior_thread], REGISTER_BYTES); - ps.pi_thread = inferior_thread = thread; - if (have_inferior_p ()) - ioctl (inferior_fd, PISETRWTID, &ps); - bcopy (thread_regs[thread], registers, REGISTER_BYTES); -} - -/* Routine to set or clear a psw bit in the psw and also all psws - saved on the stack. Quits when we get to a frame in which the - saved psw is correct. */ - -static void -scan_stack (bit, val) - long bit, val; -{ - long ps = read_register (PS_REGNUM); - long fp; - if (val ? !(ps & bit) : (ps & bit)) - { - ps ^= bit; - write_register (PS_REGNUM, ps); - - fp = read_register (FP_REGNUM); - while (fp & 0x80000000) - { - ps = read_memory_integer (fp + 4, 4); - if (val ? (ps & bit) : !(ps & bit)) - break; - ps ^= bit; - write_memory (fp + 4, &ps, 4); - fp = read_memory_integer (fp + 8, 4); - } - } -} - -/* Set fixed scheduling (alliant mode) of process PID to ARG (0 or 1). */ - -static void -set_fixed_scheduling (pid, arg) - int arg; -{ - struct pattributes pattr; - getpattr (pid, &pattr); - pattr.pattr_pfixed = arg; - setpattr (pid, &pattr); -} - -core_file_command (filename, from_tty) - char *filename; - int from_tty; -{ - int n; - - /* Discard all vestiges of any previous core file - and mark data and stack spaces as empty. */ - - if (corefile) - free (corefile); - corefile = 0; - - if (corechan >= 0) - close (corechan); - corechan = -1; - - data_start = 0; - data_end = 0; - stack_start = STACK_END_ADDR; - stack_end = STACK_END_ADDR; - n_core = 0; - - /* Now, if a new core file was specified, open it and digest it. */ - - if (filename) - { - filename = tilde_expand (filename); - make_cleanup (free, filename); - - if (have_inferior_p ()) - error ("To look at a core file, you must kill the inferior with \"kill\"."); - corechan = open (filename, O_RDONLY, 0); - if (corechan < 0) - perror_with_name (filename); - - if (myread (corechan, &filehdr, sizeof filehdr) < 0) - perror_with_name (filename); - - if (!IS_CORE_SOFF_MAGIC (filehdr.h_magic)) - error ("%s: not a core file.\n", filename); - - if (myread (corechan, &opthdr, filehdr.h_opthdr) < 0) - perror_with_name (filename); - - /* Read through the section headers. - For text, data, etc, record an entry in the core file map. - For context and tcontext, record the file address of - the context blocks. */ - - lseek (corechan, (long) filehdr.h_scnptr, 0); - - n_threads = 0; - for (n = 0; n < filehdr.h_nscns; n++) - { - if (myread (corechan, &scnhdr, sizeof scnhdr) < 0) - perror_with_name (filename); - if ((scnhdr.s_flags & S_TYPMASK) >= S_TEXT - && (scnhdr.s_flags & S_TYPMASK) <= S_COMON) - { - core_map[n_core].mem_addr = scnhdr.s_vaddr; - core_map[n_core].mem_end = scnhdr.s_vaddr + scnhdr.s_size; - core_map[n_core].file_addr = scnhdr.s_scnptr; - core_map[n_core].type = scnhdr.s_flags & S_TYPMASK; - if (core_map[n_core].type != S_TBSS - && core_map[n_core].type != S_TDATA - && core_map[n_core].type != S_TTEXT) - core_map[n_core].thread = -1; - else if (n_core == 0 - || core_map[n_core-1].mem_addr != scnhdr.s_vaddr) - core_map[n_core].thread = 0; - else - core_map[n_core].thread = core_map[n_core-1].thread + 1; - n_core++; - } - else if ((scnhdr.s_flags & S_TYPMASK) == S_CONTEXT) - context_offset = scnhdr.s_scnptr; - else if ((scnhdr.s_flags & S_TYPMASK) == S_TCONTEXT) - tcontext_offset[n_threads++] = scnhdr.s_scnptr; - } - - /* Read the context block, struct user, struct proc, - and the comm regs. */ - - lseek (corechan, context_offset, 0); - if (myread (corechan, &c, sizeof c) < 0) - perror_with_name (filename); - lseek (corechan, c.core_user_p, 0); - if (myread (corechan, &u, sizeof u) < 0) - perror_with_name (filename); - lseek (corechan, c.core_proc_p, 0); - if (myread (corechan, &pr, sizeof pr) < 0) - perror_with_name (filename); - comm_registers = pr.p_creg; - - /* Core file apparently is really there. Make it really exist - for xfer_core_file so we can do read_memory on it. */ - - if (filename[0] == '/') - corefile = savestring (filename, strlen (filename)); - else - corefile = concat (current_directory, "/", filename); - - printf_filtered ("Program %s ", u.u_comm); - - /* Read the thread registers and fill in the thread_xxx[] data. */ - - for (n = 0; n < n_threads; n++) - { - select_thread (n); - - lseek (corechan, tcontext_offset[n], 0); - if (myread (corechan, &tc, sizeof tc) < 0) - perror_with_name (corefile); - lseek (corechan, tc.core_thread_p, 0); - if (myread (corechan, &th, sizeof th) < 0) - perror_with_name (corefile); - - lseek (corechan, tc.core_syscall_context_p, 0); - if (myread (corechan, registers, REGISTER_BYTES) < 0) - perror_with_name (corefile); - - thread_signal[n] = th.t_cursig; - thread_sigcode[n] = th.t_code; - thread_state[n] = th.t_state; - thread_pc[n] = read_pc (); - - if (thread_pc[n] > STACK_END_ADDR) - { - POP_FRAME; - if (is_break_pc (thread_pc[n])) - thread_pc[n] = read_pc () - 2; - else - thread_pc[n] = read_pc (); - write_register (PC_REGNUM, thread_pc[n]); - } - - printf_filtered ("thread %d received signal %d, %s\n", - n, thread_signal[n], - thread_signal[n] < NSIG - ? sys_siglist[thread_signal[n]] - : "(undocumented)"); - } - - /* Select an interesting thread -- also-rans died with SIGKILL, - so find one that didn't. */ - - for (n = 0; n < n_threads; n++) - if (thread_signal[n] != 0 && thread_signal[n] != SIGKILL) - { - select_thread (n); - stop_signal = thread_signal[n]; - stop_sigcode = thread_sigcode[n]; - break; - } - - core_aouthdr.a_magic = 0; - - flush_cached_frames (); - set_current_frame (create_new_frame (read_register (FP_REGNUM), - read_pc ())); - select_frame (get_current_frame (), 0); - validate_files (); - - print_sel_frame (1); - } - else if (from_tty) - printf_filtered ("No core file now.\n"); -} - -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 exec file now.\n"); - - /* Tell display code (if any) about the changed file name. */ - if (exec_file_display_hook) - (*exec_file_display_hook) (filename); -} - -/* Read data from SOFF exec or core file. - Return 0 on success, 1 if address could not be read. */ - -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 - { - bzero (myaddr, i); - returnval = 1; - } - - memaddr += i; - myaddr += i; - len -= i; - } - return returnval; -} - - -/* 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') - || !strcmp (name, "vl") - || !strcmp (name, "vs") - || !strcmp (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; - long len = *read_vector_register (VL_REGNUM); - if (len <= 0 || len > 128) len = 128; - - if (!strcmp (name, "vl")) - { - val = value_from_long (builtin_type_int, - (LONGEST) *read_vector_register_1 (VL_REGNUM)); - } - else if (!strcmp (name, "vs")) - { - val = value_from_long (builtin_type_int, - (LONGEST) *read_vector_register_1 (VS_REGNUM)); - } - else if (!strcmp (name, "vm")) - { - long vm[4]; - long i, *p; - bcopy (read_vector_register_1 (VM_REGNUM), vm, sizeof vm); - type = vector_type (builtin_type_int, len); - 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') - { - type = vector_type (builtin_type_long_long, len); - val = allocate_value (type); - bcopy (read_vector_register_1 (name[1] - '0'), - VALUE_CONTENTS (val), TYPE_LENGTH (type)); - } - else if (name[0] == 'v') - { - long *p1, *p2; - type = vector_type (builtin_type_long, len); - 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_long (builtin_type_int, - read_comm_register (atoi (&name[1]))); - else if (name[0] == 'C') - val = value_from_long (builtin_type_long_long, - read_comm_register (atoi (&name[1]))); - - VALUE_LVAL (val) = lval_internalvar; - VALUE_INTERNALVAR (val) = var; - return val; -} - -/* Construct the type for a vector register's value -- - array[LENGTH] of ELEMENT_TYPE. */ - -static struct type * -vector_type (element_type, length) - struct type *element_type; - long length; -{ - struct type *type = (struct type *) xmalloc (sizeof (struct type)); - bzero (type, sizeof type); - TYPE_CODE (type) = TYPE_CODE_ARRAY; - TYPE_TARGET_TYPE (type) = element_type; - TYPE_LENGTH (type) = length * TYPE_LENGTH (TYPE_TARGET_TYPE (type)); - return type; -} - -/* 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 (!strcmp (name, "vl")) - write_vector_register (VL_REGNUM, 0, newval); - else if (!strcmp (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 (!strcmp (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) - 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))) - { - fprintf_filtered (stream, "%#x", lv); - return; - } - - case 10: - fprintf_filtered (stream, TYPE_UNSIGNED (type) ? "%llu" : "%lld", val); - return; - - case 8: - if (TYPE_LENGTH (type) <= sizeof lv) - fprintf_filtered (stream, "%#o", lv); - else - fprintf_filtered (stream, "%#llo", val); - return; - - case 16: - if (TYPE_LENGTH (type) <= sizeof lv) - fprintf_filtered (stream, "%#x", lv); - else - fprintf_filtered (stream, "%#llx", 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 (!strcmp (arg, "on")) - sequential = 0; - else if (!strcmp (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 (!strcmp (arg, "on")) - parallel = 1; - else if (!strcmp (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); - } - - 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 = signo < NSIG ? sys_siglist[signo] : "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 $pc - for all active threads. */ - -static void -threadstat () -{ - int t; - - for (t = 0; t < n_threads; t++) - if (thread_state[t] == PI_TALIVE) - { - printf_filtered ("%d%c %08x%c %d.%d ", t, - (t == inferior_thread ? '*' : ' '), thread_pc[t], - (thread_is_in_kernel[t] ? '#' : ' '), - thread_signal[t], thread_sigcode[t]); - print_insn (thread_pc[t], stdout); - printf_filtered ("\n"); - } -} - -/* Change the current thread to ARG. */ - -set_thread_command (arg) - char *arg; -{ - int thread; - - if (!arg) - { - threadstat (); - return; - } - - thread = parse_and_eval_address (arg); - - if (thread < 0 || thread > n_threads || thread_state[thread] != PI_TALIVE) - error ("no such thread."); - - select_thread (thread); - - stop_pc = read_pc (); - flush_cached_frames (); - set_current_frame (create_new_frame (read_register (FP_REGNUM), - read_pc ())); - select_frame (get_current_frame (), 0); - print_sel_frame (1); -} - -/* Here on CONT command; gdb's dispatch address is changed to come here. - Set global variable ALL_CONTINUE to tell resume() that it should - start up all threads, and that a thread switch will not blow gdb's - mind. */ - -static void -convex_cont_command (proc_count_exp, from_tty) - char *proc_count_exp; - int from_tty; -{ - all_continue = 1; - cont_command (proc_count_exp, from_tty); -} - -/* Here on 1CONT command. Resume only the current thread. */ - -one_cont_command (proc_count_exp, from_tty) - char *proc_count_exp; - int from_tty; -{ - cont_command (proc_count_exp, from_tty); -} - -/* Print the contents and lock bits of all communication registers, - or just register ARG if ARG is a communication register, - or the 3-word resource structure in memory at address ARG. */ - -comm_registers_info (arg) - char *arg; -{ - int i, regnum; - - if (arg) - { - if (sscanf (arg, "0x%x", ®num) == 1 - || sscanf (argc, "%d", ®num) == 1) - { - if (regnum > 0) - regnum &= ~0x8000; - } - else if (sscanf (arg, "$c%d", ®num) == 1) - ; - else if (sscanf (arg, "$C%d", ®num) == 1) - ; - else - regnum = parse_and_eval_address (arg); - - 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); - } -} - -_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); - -} |