* target.c (nomemory): Now that higher levels examine errno, give EIO.
* tm-sparc.h: Don't #include <sun4/reg.h>. * sparc-tdep.c (sparc_frame_chain, frame_saved_pc): Remove dependency on <sun4/reg.h>. Start to handle cross-byte-order. * language.h: Avoid forward enum declaration. * configure.in, tm-sun4os5.h, xm-sun4os5.h, config/sun4os5.mh, config/sun4os5.mt: New host and target. * defs.h (errno): #include <errno.h> rather than assuming int. From Pierre Willard.
This commit is contained in:
John Gilmore
parent
1eeba68641
commit
f9e3b3ccc2
6 changed files with 174 additions and 45 deletions
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@ -63,9 +63,10 @@ m68000)
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sparc)
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case "${host_os}" in
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sunos3) gdb_host=sun4os3 ;;
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sunos4) gdb_host=sun4os4 ;;
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*) gdb_host=sun4 ;;
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sunos3) gdb_host=sun4os3 ;;
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sunos4) gdb_host=sun4os4 ;;
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sunos5*|sysv4*) gdb_host=sun4os5 ;;
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*) gdb_host=sun4 ;;
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esac
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;;
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@ -255,9 +256,10 @@ sparc)
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case "${target_vendor}" in
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sun)
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case "${target_os}" in
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sunos3) gdb_target=sun4os3 ;;
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sunos4) gdb_target=sun4os4 ;;
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*) gdb_target=sun4 ;;
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sunos3) gdb_target=sun4os3 ;;
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sunos4) gdb_target=sun4os4 ;;
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sunos5|sysv4*) gdb_target=sun4os5 ;;
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*) gdb_target=sun4 ;;
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esac
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;;
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esac
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@ -22,9 +22,9 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#if !defined (LANGUAGE_H)
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#define LANGUAGE_H 1
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#ifdef __STDC__ /* Forward defs for prototypes */
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#ifdef __STDC__ /* Forward decls for prototypes */
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struct value;
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enum exp_opcode;
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/* enum exp_opcode; ANSI's `wisdom' didn't include forward enum decls. */
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#endif
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/* This used to be included to configure GDB for one or more specific
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@ -1,7 +1,5 @@
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/* Machine-dependent code which would otherwise be in inflow.c and core.c,
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for GDB, the GNU debugger.
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Copyright (C) 1986, 1987, 1989 Free Software Foundation, Inc.
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This code is for the sparc cpu.
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/* Target-dependent code for the SPARC for GDB, the GNU debugger.
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Copyright 1986, 1987, 1989, 1991, 1992 Free Software Foundation, Inc.
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This file is part of GDB.
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@ -19,9 +17,7 @@ You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include <stdio.h>
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#include "defs.h"
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#include "param.h"
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#include "frame.h"
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#include "inferior.h"
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#include "obstack.h"
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@ -38,7 +34,7 @@ extern int stop_after_trap;
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typedef enum
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{
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Error, not_branch, bicc, bicca, ba, baa, ticc, ta,
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Error, not_branch, bicc, bicca, ba, baa, ticc, ta
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} branch_type;
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/* Simulate single-step ptrace call for sun4. Code written by Gary
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@ -67,7 +63,8 @@ int one_stepped;
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set up a simulated single-step, we undo our damage. */
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void
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single_step ()
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single_step (pid)
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int pid; /* ignored */
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{
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branch_type br, isannulled();
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CORE_ADDR pc;
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@ -122,18 +119,23 @@ single_step ()
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}
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}
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#define FRAME_SAVED_L0 0 /* Byte offset from SP */
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#define FRAME_SAVED_I0 32 /* Byte offset from SP */
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CORE_ADDR
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sparc_frame_chain (thisframe)
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FRAME thisframe;
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{
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CORE_ADDR retval;
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int err;
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err = target_read_memory
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((CORE_ADDR)&(((struct rwindow *)(thisframe->frame))->rw_in[6]),
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&retval,
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sizeof (CORE_ADDR));
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CORE_ADDR addr;
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addr = thisframe->frame + FRAME_SAVED_I0 +
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REGISTER_RAW_SIZE(FP_REGNUM) * (FP_REGNUM - I0_REGNUM);
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err = target_read_memory (addr, (char *) &retval, sizeof (CORE_ADDR));
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if (err)
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return 0;
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SWAP_TARGET_AND_HOST (&retval, sizeof (retval));
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return retval;
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}
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@ -141,33 +143,30 @@ CORE_ADDR
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sparc_extract_struct_value_address (regbuf)
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char regbuf[REGISTER_BYTES];
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{
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CORE_ADDR retval;
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read_memory (((int *)(regbuf))[SP_REGNUM]+(16*4),
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&retval,
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sizeof (CORE_ADDR));
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return retval;
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/* FIXME, handle byte swapping */
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return read_memory_integer (((int *)(regbuf))[SP_REGNUM]+(16*4),
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sizeof (CORE_ADDR));
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}
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/*
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* Find the pc saved in frame FRAME.
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*/
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/* Find the pc saved in frame FRAME. */
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CORE_ADDR
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frame_saved_pc (frame)
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FRAME frame;
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{
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CORE_ADDR prev_pc;
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/* If it's at the bottom, the return value's stored in i7/rp */
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if (get_current_frame () == frame)
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read_memory ((CORE_ADDR)&((struct rwindow *)
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(read_register (SP_REGNUM)))->rw_in[7],
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&prev_pc, sizeof (CORE_ADDR));
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else
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/* Wouldn't this always work? */
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read_memory ((CORE_ADDR)&((struct rwindow *)(frame->bottom))->rw_in[7],
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&prev_pc,
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sizeof (CORE_ADDR));
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if (get_current_frame () == frame) /* FIXME, debug check. Remove >=gdb-4.6 */
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{
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if (read_register (SP_REGNUM) != frame->bottom) abort();
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}
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read_memory ((CORE_ADDR) (frame->bottom + FRAME_SAVED_I0 +
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REGISTER_RAW_SIZE(I7_REGNUM) * (I7_REGNUM - I0_REGNUM)),
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(char *) &prev_pc,
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sizeof (CORE_ADDR));
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SWAP_TARGET_AND_HOST (&prev_pc, sizeof (prev_pc));
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return PC_ADJUST (prev_pc);
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}
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@ -638,7 +637,30 @@ sparc_pc_adjust(pc)
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This information is not currently used by GDB, since no current SPARC
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implementations support extended float. */
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const struct ext_format ext_format_sparc[] = {
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const struct ext_format ext_format_sparc = {
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/* tot sbyte smask expbyte manbyte */
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{ 16, 0, 0x80, 0,1, 4,8 }, /* sparc */
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16, 0, 0x80, 0,1, 4,8, /* sparc */
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};
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/* Figure out where the longjmp will land. We expect that we have just entered
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longjmp and haven't yet setup the stack frame, so the args are still in the
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output regs. %o0 (O0_REGNUM) points at the jmp_buf structure from which we
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extract the pc (JB_PC) that we will land at. The pc is copied into ADDR.
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This routine returns true on success */
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int
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get_longjmp_target(pc)
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CORE_ADDR *pc;
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{
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CORE_ADDR jb_addr;
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jb_addr = read_register(O0_REGNUM);
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if (target_read_memory(jb_addr + JB_PC * JB_ELEMENT_SIZE, (char *) pc,
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sizeof(CORE_ADDR)))
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return 0;
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SWAP_TARGET_AND_HOST(pc, sizeof(CORE_ADDR));
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return 1;
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}
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@ -295,10 +295,6 @@ sparc_extract_struct_value_address PARAMS ((char [REGISTER_BYTES]));
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/* Describe the pointer in each stack frame to the previous stack frame
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(its caller). */
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/* If you're not compiling this on a sun, you'll have to get a copy
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of <sun4/reg.h> (also known as <machine/reg.h>). */
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#include <sun4/reg.h>
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/* FRAME_CHAIN takes a frame's nominal address
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and produces the frame's chain-pointer. */
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52
gdb/tm-sun4os5.h
Normal file
52
gdb/tm-sun4os5.h
Normal file
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@ -0,0 +1,52 @@
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/* Macro definitions for GDB for a Sun 4 running SunOS 5.
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Copyright (C) 1989, 1992 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "tm-sparc.h"
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#include "tm-sysv4.h"
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#undef STACK_END_ADDRESS
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#define STACK_END_ADDRESS 0xf8000000
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#if 0 /* Setjmp/longjmp are not as well doc'd in SunOS 5.x yet */
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/* Offsets into jmp_buf. Not defined by Sun, but at least documented in a
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comment in <machine/setjmp.h>! */
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#define JB_ELEMENT_SIZE 4 /* Size of each element in jmp_buf */
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#define JB_ONSSTACK 0
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#define JB_SIGMASK 1
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#define JB_SP 2
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#define JB_PC 3
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#define JB_NPC 4
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#define JB_PSR 5
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#define JB_G1 6
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#define JB_O0 7
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#define JB_WBCNT 8
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/* Figure out where the longjmp will land. We expect that we have just entered
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longjmp and haven't yet setup the stack frame, so the args are still in the
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output regs. %o0 (O0_REGNUM) points at the jmp_buf structure from which we
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extract the pc (JB_PC) that we will land at. The pc is copied into ADDR.
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This routine returns true on success */
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#define GET_LONGJMP_TARGET(ADDR) get_longjmp_target(ADDR)
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#endif /* 0 */
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57
gdb/xm-sun4os5.h
Normal file
57
gdb/xm-sun4os5.h
Normal file
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@ -0,0 +1,57 @@
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/* Macro definitions for running gdb on a Sun 4 running sunos 5.
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Copyright 1989, 1992 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* Most of what we know is generic to SPARC hosts. */
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#include "xm-sparc.h"
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/* Pick up more stuff from the generic SVR4 host include file. */
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#include "xm-sysv4.h"
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/* SVR4's can't seem to agree on what to call the type that contains the
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general registers. Kludge around it with a #define. */
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#define gregset_t prgreg_t
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#define fpregset_t prfpregset_t
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/* The native Sun compiler complains about using volatile
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to indicate functions that never return. So shut it up by simply
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defining away "NORETURN", which is normally defined to "volatile". */
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#ifndef __GNUC__
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# define NORETURN /**/
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#endif
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/* Large alloca's fail because the attempt to increase the stack limit in
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main() fails because shared libraries are allocated just below the initial
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stack limit. The SunOS kernel will not allow the stack to grow into
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the area occupied by the shared libraries. Sun knows about this bug
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but has no obvious fix for it. */
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#define BROKEN_LARGE_ALLOCA
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/* If you expect to use the mmalloc package to obtain mapped symbol files,
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for now you have to specify some parameters that determine how gdb places
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the mappings in it's address space. See the comments in map_to_address()
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for details. This is expected to only be a short term solution. Yes it
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is a kludge.
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FIXME: Make this more automatic. */
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#define MMAP_BASE_ADDRESS 0xE0000000 /* First mapping here */
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#define MMAP_INCREMENT 0x01000000 /* Increment to next mapping */
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