| /* GNU/Linux S/390 specific low level interface, for the remote server |
| for GDB. |
| Copyright (C) 2001, 2002, 2005 |
| 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., 51 Franklin Street, Fifth Floor, |
| Boston, MA 02110-1301, USA. */ |
| |
| /* This file is used for both 31-bit and 64-bit S/390 systems. */ |
| |
| #include "server.h" |
| #include "linux-low.h" |
| |
| #include <asm/ptrace.h> |
| |
| #define s390_num_regs 51 |
| |
| static int s390_regmap[] = { |
| PT_PSWMASK, PT_PSWADDR, |
| |
| PT_GPR0, PT_GPR1, PT_GPR2, PT_GPR3, |
| PT_GPR4, PT_GPR5, PT_GPR6, PT_GPR7, |
| PT_GPR8, PT_GPR9, PT_GPR10, PT_GPR11, |
| PT_GPR12, PT_GPR13, PT_GPR14, PT_GPR15, |
| |
| PT_ACR0, PT_ACR1, PT_ACR2, PT_ACR3, |
| PT_ACR4, PT_ACR5, PT_ACR6, PT_ACR7, |
| PT_ACR8, PT_ACR9, PT_ACR10, PT_ACR11, |
| PT_ACR12, PT_ACR13, PT_ACR14, PT_ACR15, |
| |
| PT_FPC, |
| |
| #ifndef __s390x__ |
| PT_FPR0_HI, PT_FPR1_HI, PT_FPR2_HI, PT_FPR3_HI, |
| PT_FPR4_HI, PT_FPR5_HI, PT_FPR6_HI, PT_FPR7_HI, |
| PT_FPR8_HI, PT_FPR9_HI, PT_FPR10_HI, PT_FPR11_HI, |
| PT_FPR12_HI, PT_FPR13_HI, PT_FPR14_HI, PT_FPR15_HI, |
| #else |
| PT_FPR0, PT_FPR1, PT_FPR2, PT_FPR3, |
| PT_FPR4, PT_FPR5, PT_FPR6, PT_FPR7, |
| PT_FPR8, PT_FPR9, PT_FPR10, PT_FPR11, |
| PT_FPR12, PT_FPR13, PT_FPR14, PT_FPR15, |
| #endif |
| }; |
| |
| static int |
| s390_cannot_fetch_register (int regno) |
| { |
| if (s390_regmap[regno] == -1) |
| return 1; |
| |
| return 0; |
| } |
| |
| static int |
| s390_cannot_store_register (int regno) |
| { |
| if (s390_regmap[regno] == -1) |
| return 1; |
| |
| return 0; |
| } |
| |
| |
| static const unsigned char s390_breakpoint[] = { 0, 1 }; |
| #define s390_breakpoint_len 2 |
| |
| static CORE_ADDR |
| s390_get_pc () |
| { |
| unsigned long pc; |
| collect_register_by_name ("pswa", &pc); |
| #ifndef __s390x__ |
| pc &= 0x7fffffff; |
| #endif |
| return pc; |
| } |
| |
| static void |
| s390_set_pc (CORE_ADDR newpc) |
| { |
| unsigned long pc = newpc; |
| #ifndef __s390x__ |
| pc |= 0x80000000; |
| #endif |
| supply_register_by_name ("pswa", &pc); |
| } |
| |
| static int |
| s390_breakpoint_at (CORE_ADDR pc) |
| { |
| unsigned char c[s390_breakpoint_len]; |
| read_inferior_memory (pc, c, s390_breakpoint_len); |
| return memcmp (c, s390_breakpoint, s390_breakpoint_len) == 0; |
| } |
| |
| |
| struct linux_target_ops the_low_target = { |
| s390_num_regs, |
| s390_regmap, |
| s390_cannot_fetch_register, |
| s390_cannot_store_register, |
| s390_get_pc, |
| s390_set_pc, |
| s390_breakpoint, |
| s390_breakpoint_len, |
| NULL, |
| s390_breakpoint_len, |
| s390_breakpoint_at, |
| }; |
| |