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Diffstat (limited to 'gdb/ns32km3-nat.c')
| -rw-r--r-- | gdb/ns32km3-nat.c | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/gdb/ns32km3-nat.c b/gdb/ns32km3-nat.c new file mode 100644 index 00000000000..cdafb9ce0d4 --- /dev/null +++ b/gdb/ns32km3-nat.c @@ -0,0 +1,183 @@ +/* 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); +} |