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Bochs/bochs/debug/debug.h
Bryce Denney e61d00351f - merged BRANCH-smp-bochs into main branch. For details see comments 
in BRANCH-smp-bochs revisions.
- The general task was to make multiple CPU's which communicate
  through their APICs.  So instead of BX_CPU and BX_MEM, we now have
  BX_CPU(x) and BX_MEM(y).  For an SMP simulation you have several
  processors in a shared memory space, so there might be processors
  BX_CPU(0..3) but only one memory space BX_MEM(0).  For cosimulation,
  you could have BX_CPU(0) with BX_MEM(0), then BX_CPU(1) with
  BX_MEM(1).  WARNING: Cosimulation is almost certainly broken by the
  SMP changes.
- to simulate multiple CPUs, you have to give each CPU time to execute
  in turn.  This is currently implemented using debugger guards.  The
  cpu loop steps one CPU for a few instructions, then steps the
  next CPU for a few instructions, etc.
- there is some limited support in the debugger for two CPUs, for
  example printing information from each CPU when single stepping.
2001-05-23 08:16:07 +00:00

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// Copyright (C) 2001 MandrakeSoft S.A.
//
// MandrakeSoft S.A.
// 43, rue d'Aboukir
// 75002 Paris - France
// http://www.linux-mandrake.com/
// http://www.mandrakesoft.com/
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
// if including from C parser, need basic types etc
#include "config.h"
#include "osdep.h"
#if BX_USE_LOADER
#include "loader_misc.h"
void bx_dbg_loader(char *path, bx_loader_misc_t *misc_ptr);
#endif
#if BX_DBG_ICOUNT_SIZE == 32
typedef Bit32u bx_dbg_icount_t;
#elif BX_DBG_ICOUNT_SIZE == 64
typedef Bit64u bx_dbg_icount_t;
#else
# error "BX_DBG_ICOUNT_SIZE incorrect."
#endif
#define BX_DBG_NO_HANDLE 1000
extern Bit32u dbg_cpu;
unsigned long crc32(unsigned char *buf, int len);
#if BX_DEBUGGER
// some strict C declarations needed by the parser/lexer
#ifdef __cplusplus
extern "C" {
#endif
// Flex defs
extern int bxlex(void);
extern char *bxtext; // Using the pointer option rather than array
extern int bxwrap(void);
void bx_add_lex_input(char *buf);
// Yacc defs
extern int bxparse(void);
extern void bxerror(char *s);
typedef struct {
Bit64s from;
Bit64s to;
} bx_num_range;
#define EMPTY_ARG (-1)
bx_num_range make_num_range (Bit64s from, Bit64s to);
char* bx_dbg_symbolic_address(Bit32u context, Bit32u eip, Bit32u base);
void bx_dbg_symbol_command(char* filename, Boolean global, Bit32u offset);
void bx_dbg_trace_on_command(void);
void bx_dbg_trace_off_command(void);
void bx_dbg_ptime_command(void);
void bx_dbg_timebp_command(Boolean absolute, Bit64u time);
void bx_dbg_diff_memory(void);
void bx_dbg_always_check(Bit32u page_start, Boolean on);
void bx_dbg_sync_memory(Boolean set);
void bx_dbg_sync_cpu(Boolean set);
void bx_dbg_fast_forward(Bit32u num);
void bx_dbg_info_address(Bit32u seg_reg_num, Bit32u offset);
#define MAX_CONCURRENT_BPS 5
extern int timebp_timer;
extern Bit64u timebp_queue[MAX_CONCURRENT_BPS];
extern int timebp_queue_size;
void bx_dbg_record_command(char*);
void bx_dbg_playback_command(char*);
void bx_dbg_modebp_command(char*); /* BW */
void bx_dbg_where_command(void);
void bx_dbg_print_string_command(Bit32u addr);
void bx_dbg_show_command(char*); /* BW */
void enter_playback_entry();
void bx_dbg_print_stack_command(int nwords);
void bx_dbg_watch(int read, Bit32u address);
void bx_dbg_unwatch(int read, Bit32u address);
void bx_dbg_continue_command(void);
void bx_dbg_stepN_command(bx_dbg_icount_t count);
void bx_dbg_set_command(char *p1, char *p2, char *p3);
void bx_dbg_del_breakpoint_command(unsigned handle);
void bx_dbg_vbreakpoint_command(Boolean specific, Bit32u cs, Bit32u eip);
void bx_dbg_lbreakpoint_command(Boolean specific, Bit32u laddress);
void bx_dbg_pbreakpoint_command(Boolean specific, Bit32u paddress);
void bx_dbg_info_bpoints_command(void);
void bx_dbg_quit_command(void);
void bx_dbg_info_program_command(void);
void bx_dbg_info_registers_command(void);
void bx_dbg_info_dirty_command(void);
void bx_dbg_info_idt_command(bx_num_range);
void bx_dbg_info_gdt_command(bx_num_range);
void bx_dbg_info_ldt_command(bx_num_range);
void bx_dbg_info_tss_command(bx_num_range);
void bx_dbg_info_control_regs_command(void);
void bx_dbg_info_linux_command(void);
void bx_dbg_examine_command(char *command, char *format, Boolean format_passed,
Bit32u addr, Boolean addr_passed, int simulator);
void bx_dbg_setpmem_command(Bit32u addr, unsigned len, Bit32u val);
void bx_dbg_set_symbol_command(char *symbol, Bit32u val);
void bx_dbg_query_command(char *);
void bx_dbg_take_command(char *, unsigned n);
void bx_dbg_dump_cpu_command(void);
void bx_dbg_set_cpu_command(void);
void bx_dbg_disassemble_command(bx_num_range);
void bx_dbg_instrument_command(char *);
void bx_dbg_loader_command(char *);
void bx_dbg_doit_command(unsigned);
void bx_dbg_crc_command(Bit32u addr1, Bit32u addr2);
void bx_dbg_maths_command(char *command, int data1, int data2);
void bx_dbg_maths_expression_command(char *expr);
void bx_dbg_v2l_command(unsigned seg_no, Bit32u offset);
extern Boolean watchpoint_continue;
void bx_dbg_linux_syscall ();
#ifdef __cplusplus
}
#endif
// the rest for C++
#ifdef __cplusplus
// (mch) Read/write watchpoint hack
#define MAX_WRITE_WATCHPOINTS 16
#define MAX_READ_WATCHPOINTS 16
extern int num_write_watchpoints;
extern Bit32u write_watchpoint[MAX_WRITE_WATCHPOINTS];
extern int num_read_watchpoints;
extern Bit32u read_watchpoint[MAX_READ_WATCHPOINTS];
typedef enum {
STOP_NO_REASON = 0, STOP_TIME_BREAK_POINT, STOP_READ_WATCH_POINT, STOP_WRITE_WATCH_POINT, STOP_MAGIC_BREAK_POINT, STOP_TRACE, STOP_MODE_BREAK_POINT, STOP_CPU_HALTED
} stop_reason_t;
typedef enum {
BREAK_POINT_MAGIC, BREAK_POINT_READ, BREAK_POINT_WRITE, BREAK_POINT_TIME
} break_point_t;
#define BX_DBG_REG_EAX 10
#define BX_DBG_REG_ECX 11
#define BX_DBG_REG_EDX 12
#define BX_DBG_REG_EBX 13
#define BX_DBG_REG_ESP 14
#define BX_DBG_REG_EBP 15
#define BX_DBG_REG_ESI 16
#define BX_DBG_REG_EDI 17
#define BX_DBG_REG_EIP 18
#define BX_DBG_REG_EFLAGS 19
#define BX_DBG_REG_CS 20
#define BX_DBG_REG_SS 21
#define BX_DBG_REG_DS 22
#define BX_DBG_REG_ES 23
#define BX_DBG_REG_FS 24
#define BX_DBG_REG_GS 25
#define BX_DBG_PENDING_DMA 1
#define BX_DBG_PENDING_IRQ 2
void bx_dbg_exit(int code);
#if BX_DBG_EXTENSIONS
int bx_dbg_extensions(char *command);
#else
#define bx_dbg_extensions(command) 0
#endif
//
// code for guards...
//
#define BX_DBG_GUARD_INSTR_BEGIN 0x0001
#define BX_DBG_GUARD_INSTR_END 0x0002
#define BX_DBG_GUARD_EXCEP_BEGIN 0x0004
#define BX_DBG_GUARD_EXCEP_END 0x0008
#define BX_DBG_GUARD_INTER_BEGIN 0x0010
#define BX_DBG_GUARD_INTER_END 0x0020
#define BX_DBG_GUARD_INSTR_MAP 0x0040
// following 3 go along with BX_DBG_GUARD_INSTR_BEGIN
// to provide breakpointing
#define BX_DBG_GUARD_IADDR_VIR 0x0080
#define BX_DBG_GUARD_IADDR_LIN 0x0100
#define BX_DBG_GUARD_IADDR_PHY 0x0200
#define BX_DBG_GUARD_IADDR_ALL (BX_DBG_GUARD_IADDR_VIR | \
BX_DBG_GUARD_IADDR_LIN | \
BX_DBG_GUARD_IADDR_PHY)
#define BX_DBG_GUARD_ICOUNT 0x0400
#define BX_DBG_GUARD_CTRL_C 0x0800
typedef struct {
unsigned long guard_for;
// instruction address breakpoints
struct {
#if BX_DBG_SUPPORT_VIR_BPOINT
unsigned num_virtual;
struct {
Bit32u cs; // only use 16 bits
Bit32u eip;
unsigned bpoint_id;
} vir[BX_DBG_MAX_VIR_BPOINTS];
#endif
#if BX_DBG_SUPPORT_LIN_BPOINT
unsigned num_linear;
struct {
Bit32u addr;
unsigned bpoint_id;
} lin[BX_DBG_MAX_LIN_BPOINTS];
#endif
#if BX_DBG_SUPPORT_PHY_BPOINT
unsigned num_physical;
struct {
Bit32u addr;
unsigned bpoint_id;
} phy[BX_DBG_MAX_PHY_BPOINTS];
#endif
} iaddr;
bx_dbg_icount_t icount; // stop after completing this many instructions
// user typed Ctrl-C, requesting simulator stop at next convient spot
volatile Boolean interrupt_requested;
// booleans to control whether simulator should report events
// to debug controller
struct {
Boolean irq;
Boolean a20;
Boolean io;
Boolean ucmem;
Boolean dma;
} report;
struct {
Boolean irq; // should process IRQs asynchronously
Boolean dma; // should process DMAs asynchronously
} async;
#define BX_DBG_ASYNC_PENDING_A20 0x01
#define BX_DBG_ASYNC_PENDING_RESET 0x02
#define BX_DBG_ASYNC_PENDING_NMI 0x04
// Asynchronous changes which are pending. These are Q'd by
// the debugger, as the master simulator is notified of a pending
// async change. At the simulator's next point, where it checks for
// such events, it notifies the debugger with acknowlegement. This
// field contains a logically or'd list of all events which should
// be checked, and ack'd.
struct {
unsigned which; // logical OR of above constants
Boolean a20;
Boolean reset;
Boolean nmi;
} async_changes_pending;
} bx_guard_t;
// working information for each simulator to update when a guard
// is reached (found)
typedef struct bx_guard_found_t {
unsigned long guard_found;
unsigned iaddr_index;
bx_dbg_icount_t icount; // number of completed instructions
Bit32u cs; // cs:eip and linear addr of instruction at guard point
Bit32u eip;
Bit32u laddr;
Boolean is_32bit_code; // CS seg size at guard point
Boolean ctrl_c; // simulator stopped due to Ctrl-C request
} bx_guard_found_t;
extern bx_guard_t bx_guard;
int bx_dbg_main(int argc, char *argv[]);
void bx_dbg_user_input_loop(void);
typedef struct {
Bit16u sel;
Bit32u des_l, des_h, valid;
} bx_dbg_sreg_t;
typedef struct {
Bit32u eax;
Bit32u ebx;
Bit32u ecx;
Bit32u edx;
Bit32u ebp;
Bit32u esi;
Bit32u edi;
Bit32u esp;
Bit32u eflags;
Bit32u eip;
bx_dbg_sreg_t cs;
bx_dbg_sreg_t ss;
bx_dbg_sreg_t ds;
bx_dbg_sreg_t es;
bx_dbg_sreg_t fs;
bx_dbg_sreg_t gs;
bx_dbg_sreg_t ldtr;
bx_dbg_sreg_t tr;
struct { Bit32u base, limit; } gdtr;
struct { Bit32u base, limit; } idtr;
Bit32u dr0, dr1, dr2, dr3, dr6, dr7;
Bit32u tr3, tr4, tr5, tr6, tr7;
Bit32u cr0, cr1, cr2, cr3, cr4;
unsigned inhibit_mask;
} bx_dbg_cpu_t;
typedef struct {
// call back functions specific to each simulator
Boolean (*setphymem)(Bit32u addr, unsigned len, Bit8u *buf);
Boolean (*getphymem)(Bit32u addr, unsigned len, Bit8u *buf);
void (*xlate_linear2phy)(Bit32u linear, Bit32u *phy, Boolean *valid);
Boolean (*set_reg)(unsigned reg, Bit32u val);
Bit32u (*get_reg)(unsigned reg);
Boolean (*get_sreg)(bx_dbg_sreg_t *sreg, unsigned sreg_no);
Boolean (*set_cpu)(bx_dbg_cpu_t *cpu);
Boolean (*get_cpu)(bx_dbg_cpu_t *cpu);
unsigned dirty_page_tbl_size;
unsigned char *dirty_page_tbl;
void (*atexit)(void);
unsigned (*query_pending)(void);
void (*execute)(void);
void (*take_irq)(void);
void (*take_dma)(void);
void (*reset_cpu)(unsigned source);
void (*init_mem)(int size_in_bytes);
void (*load_ROM)(const char *path, Bit32u romaddress);
// for asynchronous environment handling
void (*set_A20)(unsigned val);
void (*set_NMI)(unsigned val);
void (*set_RESET)(unsigned val);
void (*set_INTR)(unsigned val);
void (*force_interrupt)(unsigned vector);
#if BX_INSTRUMENTATION
void (*instr_start)(void);
void (*instr_stop)(void);
void (*instr_reset)(void);
void (*instr_print)(void);
#endif
#if BX_USE_LOADER
void (*loader)(char *path, bx_loader_misc_t *misc_ptr);
#endif
Boolean (*crc32)(unsigned long (*f)(unsigned char *buf, int len),
Bit32u addr1, Bit32u addr2, Bit32u *crc);
} bx_dbg_callback_t;
extern bx_dbg_callback_t bx_dbg_callback[BX_NUM_SIMULATORS];
void BX_SIM1_INIT(bx_dbg_callback_t *, int argc, char *argv[]);
#ifdef BX_SIM2_INIT
void BX_SIM2_INIT(bx_dbg_callback_t *, int argc, char *argv[]);
#endif
void bx_dbg_dma_report(Bit32u addr, unsigned len, unsigned what, Bit32u val);
void bx_dbg_iac_report(unsigned vector, unsigned irq);
void bx_dbg_a20_report(unsigned val);
void bx_dbg_io_report(Bit32u addr, unsigned size, unsigned op, Bit32u val);
void bx_dbg_ucmem_report(Bit32u addr, unsigned size, unsigned op, Bit32u val);
Bit8u bx_dbg_ucmem_read(Bit32u addr);
void bx_dbg_ucmem_write(Bit32u addr, Bit8u value);
void bx_dbg_async_pin_request(unsigned what, Boolean val);
void bx_dbg_async_pin_ack(unsigned what, Boolean val);
Bit32u bx_dbg_inp(Bit16u addr, unsigned len);
void bx_dbg_outp(Bit16u addr, Bit32u value, unsigned len);
void bx_dbg_raise_HLDA(void);
Bit8u bx_dbg_IAC(void);
void bx_dbg_set_INTR(Boolean b);
int bx_dbg_symbolic_output(void); /* BW */
#endif // #ifdef __cplusplus
#endif // #if BX_DEBUGGER
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