mirror of
https://github.com/reactos/wine.git
synced 2024-12-11 13:26:00 +00:00
deca2502d6
unload a module (and it's debugging information), and a process
without pain
- portabiblity to another CPU should be easier now (CPU dependent backend)
- speed up memory allocation
- stabs related fixes:
+ now correctly handling symbol's size
+ blocks {} in functions are now correctly recognized and stored
(also applies to local variables scoping)
+ better basic types management (less wild guesses in the code)
+ full support of inline functions (source stepping now shows the
code in .h files for example)
- removal of external debugger (attaching with gdb is just fine to
debug winedbg)
- fixed a couple of issues for symbol address handling (address
lookup, incorrect type binding)
- winedbg now has a man page
117 lines
6.4 KiB
C
117 lines
6.4 KiB
C
/*
|
|
* Debugger CPU backend definitions
|
|
*
|
|
* Copyright 2004 Eric Pouech
|
|
*
|
|
* 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 2.1 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
|
|
*/
|
|
|
|
enum be_cpu_addr {be_cpu_addr_pc, be_cpu_addr_stack, be_cpu_addr_frame};
|
|
enum be_xpoint_type {be_xpoint_break, be_xpoint_watch_exec, be_xpoint_watch_read,
|
|
be_xpoint_watch_write};
|
|
struct backend_cpu
|
|
{
|
|
/* ------------------------------------------------------------------------------
|
|
* address manipulation
|
|
* ------------------------------------------------------------------------------ */
|
|
/* Linearizes an address. Only CPUs with segmented address model need this.
|
|
* Otherwise, implementation is straigthforward (be_cpu_linearize will do)
|
|
*/
|
|
void* (*linearize)(HANDLE hThread, const ADDRESS*);
|
|
/* Fills in an ADDRESS structure from a segment & an offset. CPUs without
|
|
* segment address model should use 0 as seg. Required method to fill
|
|
* in an ADDRESS (except an linear one).
|
|
* Non segmented CPU shall use be_cpu_build_addr
|
|
*/
|
|
unsigned (*build_addr)(HANDLE hThread, const CONTEXT* ctx,
|
|
ADDRESS* addr, unsigned seg,
|
|
unsigned long offset);
|
|
/* Retrieves in addr an address related to the context (program counter, stack
|
|
* pointer, frame pointer)
|
|
*/
|
|
unsigned (*get_addr)(HANDLE hThread, const CONTEXT* ctx,
|
|
enum be_cpu_addr, ADDRESS* addr);
|
|
/* -------------------------------------------------------------------------------
|
|
* context manipulation
|
|
* ------------------------------------------------------------------------------- */
|
|
/* Enables/disables CPU single step mode (depending on enable) */
|
|
void (*single_step)(CONTEXT* ctx, unsigned enable);
|
|
/* Dumps out the content of the context */
|
|
void (*print_context)(HANDLE hThread, const CONTEXT* ctx);
|
|
/* Prints information about segments. Non segmented CPU should leave this
|
|
* function empty
|
|
*/
|
|
void (*print_segment_info)(HANDLE hThread, const CONTEXT* ctx);
|
|
/* Do the initialization so that the debugger has internal variables linked
|
|
* to the context's registers
|
|
*/
|
|
const struct dbg_internal_var*
|
|
(*init_registers)(CONTEXT* ctx);
|
|
/* -------------------------------------------------------------------------------
|
|
* code inspection
|
|
* -------------------------------------------------------------------------------*/
|
|
/* Check whether the instruction at addr is an insn to step over
|
|
* (like function call, interruption...)
|
|
*/
|
|
unsigned (*is_step_over_insn)(const void* addr);
|
|
/* Check whether instruction at 'addr' is the return from a function call */
|
|
unsigned (*is_function_return)(const void* addr);
|
|
/* Check whether instruction at 'addr' is the CPU break instruction. On i386,
|
|
* it's INT3 (0xCC)
|
|
*/
|
|
unsigned (*is_break_insn)(const void*);
|
|
/* Check whether instruciton at 'addr' is a function call */
|
|
unsigned (*is_function_call)(const void* insn, ADDRESS* callee);
|
|
/* Ask for dissasembling one instruction. If display is true, assembly code
|
|
* will be printed. In all cases, 'addr' is advanced at next instruction
|
|
*/
|
|
void (*disasm_one_insn)(ADDRESS* addr, int display);
|
|
/* -------------------------------------------------------------------------------
|
|
* break points / watchpoints handling
|
|
* -------------------------------------------------------------------------------*/
|
|
/* Inserts an Xpoint in the CPU context and/or debuggee address space */
|
|
unsigned (*insert_Xpoint)(HANDLE hProcess, CONTEXT* ctx,
|
|
enum be_xpoint_type type, void* addr,
|
|
unsigned long* val, unsigned size);
|
|
/* Removes an Xpoint in the CPU context and/or debuggee address space */
|
|
unsigned (*remove_Xpoint)(HANDLE hProcess, CONTEXT* ctx,
|
|
enum be_xpoint_type type, void* addr,
|
|
unsigned long val, unsigned size);
|
|
/* Checks whether a given watchpoint has been triggered */
|
|
unsigned (*is_watchpoint_set)(const CONTEXT* ctx, unsigned idx);
|
|
/* Clears the watchpoint indicator */
|
|
void (*clear_watchpoint)(CONTEXT* ctx, unsigned idx);
|
|
/* After a break instruction is executed, in the corresponding exception handler,
|
|
* some CPUs report the address of the insn after the break insn, some others
|
|
* report the address of the break insn itself.
|
|
* This function lets adjust the context PC to reflect this behavior.
|
|
*/
|
|
int (*adjust_pc_for_break)(CONTEXT* ctx, BOOL way);
|
|
/* -------------------------------------------------------------------------------
|
|
* basic type read/write
|
|
* -------------------------------------------------------------------------------*/
|
|
/* Reads an integer from memory and stores it inside a long long int */
|
|
int (*fetch_integer)(const struct dbg_lvalue* lvalue, unsigned size, unsigned is_signed, long long int*);
|
|
/* Reads a real from memory and stores it inside a long double */
|
|
int (*fetch_float)(const struct dbg_lvalue* lvalue, unsigned size, long double*);
|
|
};
|
|
|
|
extern struct backend_cpu* be_cpu;
|
|
|
|
/* some handy functions for non segmented CPUs */
|
|
void* be_cpu_linearize(HANDLE hThread, const ADDRESS*);
|
|
unsigned be_cpu_build_addr(HANDLE hThread, const CONTEXT* ctx, ADDRESS* addr,
|
|
unsigned seg, unsigned long offset);
|