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/////////////////////////////////////////////////////////////////////////
// $Id: extdb.cc,v 1.21 2006/06/25 21:44:46 sshwarts Exp $
/////////////////////////////////////////////////////////////////////////
#include "bochs.h"
#ifdef WIN32
// windows.h included in bochs.h
#else
# error "extdb.cc only supported in win32 environment"
#endif
#include "cpu.h"
#include "iodev/iodev.h"
#include "extdb.h"
TRegs regs;
char debug_loaded = 0;
void (*call_debugger)(TRegs *,Bit8u *, Bit32u);
void bx_external_debugger(BX_CPU_C *cpu)
{
//printf("Calling debugger state=%d\n",regs.debug_state);
switch (regs.debug_state) {
case debug_run:
return;
case debug_count:
if (--regs.debug_counter) return;
regs.debug_state = debug_step;
break;
case debug_skip:
if (cpu->dword.eip != regs.debug_eip ||
cpu->sregs[1].selector.value != regs.debug_cs) return;
regs.debug_state = debug_step;
break;
}
#if BX_SUPPORT_X86_64
regs.rax = cpu->gen_reg[0].rrx;
regs.rcx = cpu->gen_reg[1].rrx;
regs.rdx = cpu->gen_reg[2].rrx;
regs.rbx = cpu->gen_reg[3].rrx;
regs.rsp = cpu->gen_reg[4].rrx;
regs.rbp = cpu->gen_reg[5].rrx;
regs.rsi = cpu->gen_reg[6].rrx;
regs.rdi = cpu->gen_reg[7].rrx;
regs.r8 = cpu->gen_reg[8].rrx;
regs.r9 = cpu->gen_reg[9].rrx;
regs.r10 = cpu->gen_reg[10].rrx;
regs.r11 = cpu->gen_reg[11].rrx;
regs.r12 = cpu->gen_reg[12].rrx;
regs.r13 = cpu->gen_reg[13].rrx;
regs.r14 = cpu->gen_reg[14].rrx;
regs.r15 = cpu->gen_reg[15].rrx;
regs.rip = cpu->rip;
#else
regs.rax = cpu->gen_reg[0].dword.erx;
regs.rcx = cpu->gen_reg[1].dword.erx;
regs.rdx = cpu->gen_reg[2].dword.erx;
regs.rbx = cpu->gen_reg[3].dword.erx;
regs.rsp = cpu->gen_reg[4].dword.erx;
regs.rbp = cpu->gen_reg[5].dword.erx;
regs.rsi = cpu->gen_reg[6].dword.erx;
regs.rdi = cpu->gen_reg[7].dword.erx;
regs.r8 = 0;
regs.r9 = 0;
regs.r10 = 0;
regs.r11 = 0;
regs.r12 = 0;
regs.r13 = 0;
regs.r14 = 0;
regs.r15 = 0;
regs.rip = cpu->dword.eip;
#endif
regs.rflags = cpu->read_eflags();
regs.es = cpu->sregs[0].selector.value;
regs.cs = cpu->sregs[1].selector.value;
regs.ss = cpu->sregs[2].selector.value;
regs.ds = cpu->sregs[3].selector.value;
regs.fs = cpu->sregs[4].selector.value;
regs.gs = cpu->sregs[5].selector.value;
regs.gdt.base = cpu->gdtr.base;
regs.gdt.limit = cpu->gdtr.limit;
regs.idt.base = cpu->idtr.base;
regs.idt.limit = cpu->idtr.limit;
regs.ldt = cpu->ldtr.selector.value;
regs.cr0 = cpu->cr0.val32;
regs.cr1 = cpu->cr1;
regs.cr2 = cpu->cr2;
regs.cr3 = cpu->cr3;
#if BX_CPU_LEVEL >= 4
regs.cr4 = cpu->cr4.getRegister();
#endif
regs.fsbase = cpu->sregs[BX_SEG_REG_FS].cache.u.segment.base;
regs.gsbase = cpu->sregs[BX_SEG_REG_GS].cache.u.segment.base;
#if BX_SUPPORT_X86_64
regs.efer = cpu->get_EFER();
#else
regs.efer = 0;
#endif
if (debug_loaded == 0) {
HINSTANCE hdbg;
debug_loaded = 1;
hdbg = LoadLibrary("debug.dll");
call_debugger = (void (*)(TRegs *,Bit8u *, Bit32u)) GetProcAddress(hdbg,"call_debugger");
if (call_debugger != NULL) debug_loaded = 2;
}
if (debug_loaded == 2) {
DEV_vga_refresh();
call_debugger(®s,cpu->mem->vector,cpu->mem->len);
}
}
void trap_debugger(bx_bool callnow)
{
regs.debug_state = debug_step;
if (callnow) {
bx_external_debugger(BX_CPU_THIS);
}
}
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