b0ded00b3f
(s390_get_pc, s390_set_pc, s390_breakpoint_at): New functions. (the_low_target): Add new members.
125 lines
2.9 KiB
C
125 lines
2.9 KiB
C
/* GNU/Linux S/390 specific low level interface, for the remote server
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for GDB.
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Copyright 2001, 2002, 2005
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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,
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Boston, MA 02111-1307, USA. */
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/* This file is used for both 31-bit and 64-bit S/390 systems. */
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#include "server.h"
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#include "linux-low.h"
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#include <asm/ptrace.h>
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#define s390_num_regs 51
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static int s390_regmap[] = {
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PT_PSWMASK, PT_PSWADDR,
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PT_GPR0, PT_GPR1, PT_GPR2, PT_GPR3,
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PT_GPR4, PT_GPR5, PT_GPR6, PT_GPR7,
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PT_GPR8, PT_GPR9, PT_GPR10, PT_GPR11,
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PT_GPR12, PT_GPR13, PT_GPR14, PT_GPR15,
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PT_ACR0, PT_ACR1, PT_ACR2, PT_ACR3,
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PT_ACR4, PT_ACR5, PT_ACR6, PT_ACR7,
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PT_ACR8, PT_ACR9, PT_ACR10, PT_ACR11,
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PT_ACR12, PT_ACR13, PT_ACR14, PT_ACR15,
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PT_FPC,
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#ifndef __s390x__
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PT_FPR0_HI, PT_FPR1_HI, PT_FPR2_HI, PT_FPR3_HI,
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PT_FPR4_HI, PT_FPR5_HI, PT_FPR6_HI, PT_FPR7_HI,
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PT_FPR8_HI, PT_FPR9_HI, PT_FPR10_HI, PT_FPR11_HI,
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PT_FPR12_HI, PT_FPR13_HI, PT_FPR14_HI, PT_FPR15_HI,
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#else
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PT_FPR0, PT_FPR1, PT_FPR2, PT_FPR3,
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PT_FPR4, PT_FPR5, PT_FPR6, PT_FPR7,
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PT_FPR8, PT_FPR9, PT_FPR10, PT_FPR11,
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PT_FPR12, PT_FPR13, PT_FPR14, PT_FPR15,
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#endif
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};
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static int
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s390_cannot_fetch_register (int regno)
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{
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if (s390_regmap[regno] == -1)
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return 1;
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return 0;
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}
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static int
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s390_cannot_store_register (int regno)
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{
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if (s390_regmap[regno] == -1)
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return 1;
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return 0;
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}
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static const char s390_breakpoint[] = { 0, 1 };
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#define s390_breakpoint_len 2
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static CORE_ADDR
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s390_get_pc ()
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{
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unsigned long pc;
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collect_register_by_name ("pswa", &pc);
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#ifndef __s390x__
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pc &= 0x7fffffff;
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#endif
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return pc;
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}
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static void
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s390_set_pc (CORE_ADDR newpc)
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{
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unsigned long pc = newpc;
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#ifndef __s390x__
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pc |= 0x80000000;
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#endif
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supply_register_by_name ("pswa", &pc);
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}
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static int
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s390_breakpoint_at (CORE_ADDR pc)
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{
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unsigned char c[s390_breakpoint_len];
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read_inferior_memory (pc, c, s390_breakpoint_len);
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return memcmp (c, s390_breakpoint, s390_breakpoint_len) == 0;
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}
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struct linux_target_ops the_low_target = {
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s390_num_regs,
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s390_regmap,
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s390_cannot_fetch_register,
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s390_cannot_store_register,
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s390_get_pc,
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s390_set_pc,
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s390_breakpoint,
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s390_breakpoint_len,
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NULL,
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s390_breakpoint_len,
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s390_breakpoint_at,
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};
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