| /* Low level interface to ns532 running mach 3.0. |
| Copyright (C) 1992 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| |
| #include "defs.h" |
| #include "inferior.h" |
| |
| #include <stdio.h> |
| |
| #include <mach.h> |
| #include <mach/message.h> |
| #include <mach/exception.h> |
| #include <mach_error.h> |
| |
| #define private static |
| |
| |
| /* Find offsets to thread states at compile time. |
| * If your compiler does not grok this, calculate offsets |
| * offsets yourself and use them (or get a compatible compiler :-) |
| */ |
| |
| #define REG_N_OFFSET(reg) (int)(&((struct ns532_combined_state *)0)->ts.reg) |
| #define REG_F_OFFSET(reg) (int)(&((struct ns532_combined_state *)0)->fs.reg) |
| |
| /* at reg_offset[i] is the offset to the ns532_combined_state |
| * location where the gdb registers[i] is stored. |
| */ |
| |
| static int reg_offset[] = |
| { |
| REG_N_OFFSET(r0), REG_N_OFFSET(r1), REG_N_OFFSET(r2), REG_N_OFFSET(r3), |
| REG_N_OFFSET(r4), REG_N_OFFSET(r5), REG_N_OFFSET(r6), REG_N_OFFSET(r7), |
| REG_F_OFFSET(l0a), REG_F_OFFSET(l0b),REG_F_OFFSET(l2a),REG_F_OFFSET(l2b), |
| REG_F_OFFSET(l4a), REG_F_OFFSET(l4b),REG_F_OFFSET(l6a),REG_F_OFFSET(l6b), |
| REG_N_OFFSET(sp), REG_N_OFFSET(fp), REG_N_OFFSET(pc), REG_N_OFFSET(psr), |
| REG_F_OFFSET(fsr), |
| REG_F_OFFSET(l0a), REG_F_OFFSET(l1a),REG_F_OFFSET(l2a),REG_F_OFFSET(l3a), |
| REG_F_OFFSET(l4a), REG_F_OFFSET(l5a),REG_F_OFFSET(l6a),REG_F_OFFSET(l7a), |
| }; |
| |
| #define REG_ADDRESS(state,regnum) ((char *)(state)+reg_offset[regnum]) |
| |
| /* Fetch COUNT contiguous registers from thread STATE starting from REGNUM |
| * Caller knows that the regs handled in one transaction are of same size. |
| */ |
| #define FETCH_REGS(state, regnum, count) \ |
| memcpy (®isters[REGISTER_BYTE (regnum)], \ |
| (char *)state+reg_offset[ regnum ], \ |
| count*REGISTER_SIZE) |
| |
| /* Store COUNT contiguous registers to thread STATE starting from REGNUM */ |
| #define STORE_REGS(state, regnum, count) \ |
| memcpy ((char *)state+reg_offset[ regnum ], \ |
| ®isters[REGISTER_BYTE (regnum)], \ |
| count*REGISTER_SIZE) |
| |
| /* |
| * Fetch inferiors registers for gdb. |
| * REGNO specifies which (as gdb views it) register, -1 for all. |
| */ |
| |
| void |
| fetch_inferior_registers (regno) |
| int regno; |
| { |
| kern_return_t ret; |
| thread_state_data_t state; |
| unsigned int stateCnt = NS532_COMBINED_STATE_COUNT; |
| int index; |
| |
| if (! MACH_PORT_VALID (current_thread)) |
| error ("fetch inferior registers: Invalid thread"); |
| |
| if (must_suspend_thread) |
| setup_thread (current_thread, 1); |
| |
| ret = thread_get_state (current_thread, |
| NS532_COMBINED_STATE, |
| state, |
| &stateCnt); |
| |
| if (ret != KERN_SUCCESS) |
| warning ("fetch_inferior_registers: %s ", |
| mach_error_string (ret)); |
| #if 0 |
| /* It may be more effective to store validate all of them, |
| * since we fetched them all anyway |
| */ |
| else if (regno != -1) |
| supply_register (regno, (char *)state+reg_offset[regno]); |
| #endif |
| else |
| { |
| for (index = 0; index < NUM_REGS; index++) |
| supply_register (index, (char *)state+reg_offset[index]); |
| } |
| |
| if (must_suspend_thread) |
| setup_thread (current_thread, 0); |
| } |
| |
| /* Store our register values back into the inferior. |
| * If REGNO is -1, do this for all registers. |
| * Otherwise, REGNO specifies which register |
| * |
| * On mach3 all registers are always saved in one call. |
| */ |
| void |
| store_inferior_registers (regno) |
| int regno; |
| { |
| kern_return_t ret; |
| thread_state_data_t state; |
| unsigned int stateCnt = NS532_COMBINED_STATE_COUNT; |
| register int index; |
| |
| if (! MACH_PORT_VALID (current_thread)) |
| error ("store inferior registers: Invalid thread"); |
| |
| if (must_suspend_thread) |
| setup_thread (current_thread, 1); |
| |
| /* Fetch the state of the current thread */ |
| ret = thread_get_state (current_thread, |
| NS532_COMBINED_STATE, |
| state, |
| &stateCnt); |
| |
| if (ret != KERN_SUCCESS) |
| { |
| warning ("store_inferior_registers (get): %s", |
| mach_error_string (ret)); |
| if (must_suspend_thread) |
| setup_thread (current_thread, 0); |
| return; |
| } |
| |
| /* move gdb's registers to thread's state |
| * |
| * Since we save all registers anyway, save the ones |
| * that gdb thinks are valid (e.g. ignore the regno |
| * parameter) |
| */ |
| #if 0 |
| if (regno != -1) |
| STORE_REGS (state, regno, 1); |
| else |
| #endif |
| { |
| for (index = 0; index < NUM_REGS; index++) |
| STORE_REGS (state, index, 1); |
| } |
| |
| /* Write gdb's current view of register to the thread |
| */ |
| ret = thread_set_state (current_thread, |
| NS532_COMBINED_STATE, |
| state, |
| NS532_COMBINED_STATE_COUNT); |
| |
| if (ret != KERN_SUCCESS) |
| warning ("store_inferior_registers (set): %s", |
| mach_error_string (ret)); |
| |
| if (must_suspend_thread) |
| setup_thread (current_thread, 0); |
| } |