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douglas |
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/* Kernel core dump functions below target vector, for GDB on FreeBSD/sparc64. |
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Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995 |
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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*/ |
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__FBSDID("$FreeBSD: ports/devel/gdb6/files/kvm-fbsd-sparc64.h,v 1.2 2004/08/23 06:34:48 obrien Exp $"); |
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#include "sparc-tdep.h" |
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#define SPARC_INTREG_SIZE 8 |
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static void |
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fetch_kcore_registers (struct pcb *pcbp) |
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{ |
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static struct frame top; |
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CORE_ADDR f_addr; |
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int i; |
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/* Get the register values out of the sys pcb and store them where |
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`read_register' will find them. */ |
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/* |
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* XXX many registers aren't available. |
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* XXX for the non-core case, the registers are stale - they are for |
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* the last context switch to the debugger. |
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* XXX do something with the floating-point registers? |
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*/ |
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regcache_raw_supply (current_regcache, SP_REGNUM, &pcbp->pcb_sp); |
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regcache_raw_supply (current_regcache, PC_REGNUM, &pcbp->pcb_pc); |
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f_addr = extract_unsigned_integer (&pcbp->pcb_sp, SPARC_INTREG_SIZE); |
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/* Load the previous frame by hand (XXX) and supply it. */ |
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read_memory (f_addr + SPOFF, (char *)&top, sizeof (top)); |
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for (i = 0; i < 8; i++) |
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regcache_raw_supply (current_regcache, i + SPARC_L0_REGNUM, &top.fr_local[i]); |
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for (i = 0; i < 8; i++) |
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regcache_raw_supply (current_regcache, i + SPARC_I0_REGNUM, &top.fr_in[i]); |
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} |
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#if __FreeBSD_version >= 500032 |
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CORE_ADDR |
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fbsd_kern_frame_saved_pc (struct frame_info *fi) |
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{ |
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struct minimal_symbol *sym; |
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CORE_ADDR frame, pc_addr, pc; |
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char *buf; |
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buf = alloca (MAX_REGISTER_SIZE); //or use DEPRECATED_MAX_REGISTER_RAW_SIZE |
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/* XXX: duplicates fi->extra_info->bottom. */ |
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frame = (get_next_frame (fi) != NULL) ? get_frame_base (get_next_frame (fi)) : read_sp (); |
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pc_addr = frame + offsetof (struct frame, fr_in[7]); |
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#define READ_PC(pc, a, b) do { \ |
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read_memory (a, b, SPARC_INTREG_SIZE); \ |
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pc = extract_unsigned_integer (b, SPARC_INTREG_SIZE); \ |
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} while (0) |
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READ_PC (pc, pc_addr, buf); |
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sym = lookup_minimal_symbol_by_pc (pc); |
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if (sym != NULL) |
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{ |
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if (strncmp (DEPRECATED_SYMBOL_NAME (sym), "tl0_", 4) == 0 || |
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strcmp (DEPRECATED_SYMBOL_NAME (sym), "btext") == 0 || |
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strcmp (DEPRECATED_SYMBOL_NAME (sym), "mp_startup") == 0 || |
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strcmp (DEPRECATED_SYMBOL_NAME (sym), "fork_trampoline") == 0) |
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{ |
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/* |
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* Ugly kluge: user space addresses aren't separated from kernel |
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* ones by range; if encountering a trap from user space, just |
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* return a 0 to stop the trace. |
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* Do the same for entry points of kernel processes to avoid |
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* printing garbage. |
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*/ |
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pc = 0; |
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} |
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if (strncmp (DEPRECATED_SYMBOL_NAME (sym), "tl1_", 4) == 0) |
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{ |
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pc_addr = get_frame_base (fi) + sizeof (struct frame) + |
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offsetof (struct trapframe, tf_tpc); |
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READ_PC (pc, pc_addr, buf); |
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} |
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} |
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return (pc); |
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} |
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#endif |
