Bochs/bochs/cpu/debugstuff.cc
2012-11-06 20:01:02 +00:00

394 lines
14 KiB
C++

/////////////////////////////////////////////////////////////////////////
// $Id$
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2001-2009 The Bochs Project
//
// 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., 51 Franklin St, Fifth Floor, Boston, MA B 02110-1301 USA
//
/////////////////////////////////////////////////////////////////////////
#define NEED_CPU_REG_SHORTCUTS 1
#include "bochs.h"
#include "cpu.h"
#define LOG_THIS BX_CPU_THIS_PTR
#if BX_DISASM
#include "disasm/disasm.h"
void BX_CPU_C::debug_disasm_instruction(bx_address offset)
{
#if BX_DEBUGGER
bx_dbg_disassemble_current(BX_CPU_ID, 1); // only one cpu, print time stamp
#else
bx_phy_address phy_addr;
Bit8u instr_buf[16];
char char_buf[512];
size_t i=0;
static char letters[] = "0123456789ABCDEF";
static disassembler bx_disassemble;
unsigned remainsInPage = 0x1000 - PAGE_OFFSET(offset);
bx_bool valid = dbg_xlate_linear2phy(get_laddr(BX_SEG_REG_CS, offset), &phy_addr);
if (valid) {
BX_MEM(0)->dbg_fetch_mem(BX_CPU_THIS, phy_addr, 16, instr_buf);
unsigned isize = bx_disassemble.disasm(
BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].cache.u.segment.d_b,
BX_CPU_THIS_PTR cpu_mode == BX_MODE_LONG_64,
BX_CPU_THIS_PTR get_segment_base(BX_SEG_REG_CS), offset,
instr_buf, char_buf+i);
if (isize <= remainsInPage) {
i=strlen(char_buf);
char_buf[i++] = ' ';
char_buf[i++] = ':';
char_buf[i++] = ' ';
for (unsigned j=0; j<isize; j++) {
char_buf[i++] = letters[(instr_buf[j] >> 4) & 0xf];
char_buf[i++] = letters[(instr_buf[j] >> 0) & 0xf];
}
char_buf[i] = 0;
BX_INFO(("0x" FMT_ADDRX ">> %s", offset, char_buf));
}
else {
BX_INFO(("0x" FMT_ADDRX ": (instruction unavailable) page split instruction", offset));
}
}
else {
BX_INFO(("0x" FMT_ADDRX ": (instruction unavailable) page not present", offset));
}
#endif // #if BX_DEBUGGER
}
#endif // #if BX_DISASM
const char* cpu_mode_string(unsigned cpu_mode)
{
static const char *cpu_mode_name[] = {
"real mode",
"v8086 mode",
"protected mode",
"compatibility mode",
"long mode",
"unknown mode"
};
if(cpu_mode >= 5) cpu_mode = 5;
return cpu_mode_name[cpu_mode];
}
const char* cpu_state_string(unsigned state)
{
static const char *cpu_state_name[] = {
"active",
"halted",
"in shutdown",
"waiting for SIPI",
"executing mwait",
"executing mwait inhibit interrups",
"unknown state"
};
if(state >= 6) state = 6;
return cpu_state_name[state];
}
void BX_CPU_C::debug(bx_address offset)
{
BX_INFO(("CPU is in %s (%s)", cpu_mode_string(BX_CPU_THIS_PTR get_cpu_mode()),
cpu_state_string(BX_CPU_THIS_PTR activity_state)));
BX_INFO(("CS.mode = %u bit",
long64_mode() ? 64 : (BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].cache.u.segment.d_b ? 32 : 16)));
BX_INFO(("SS.mode = %u bit",
long64_mode() ? 64 : (BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.u.segment.d_b ? 32 : 16)));
#if BX_CPU_LEVEL >= 5
BX_INFO(("EFER = 0x%08x", BX_CPU_THIS_PTR efer.get32()));
#endif
#if BX_SUPPORT_X86_64
if (long_mode()) {
BX_INFO(("| RAX=%08x%08x RBX=%08x%08x",
(unsigned) (RAX >> 32), (unsigned) EAX,
(unsigned) (RBX >> 32), (unsigned) EBX));
BX_INFO(("| RCX=%08x%08x RDX=%08x%08x",
(unsigned) (RCX >> 32), (unsigned) ECX,
(unsigned) (RDX >> 32), (unsigned) EDX));
BX_INFO(("| RSP=%08x%08x RBP=%08x%08x",
(unsigned) (RSP >> 32), (unsigned) ESP,
(unsigned) (RBP >> 32), (unsigned) EBP));
BX_INFO(("| RSI=%08x%08x RDI=%08x%08x",
(unsigned) (RSI >> 32), (unsigned) ESI,
(unsigned) (RDI >> 32), (unsigned) EDI));
BX_INFO(("| R8=%08x%08x R9=%08x%08x",
(unsigned) (R8 >> 32), (unsigned) (R8 & 0xFFFFFFFF),
(unsigned) (R9 >> 32), (unsigned) (R9 & 0xFFFFFFFF)));
BX_INFO(("| R10=%08x%08x R11=%08x%08x",
(unsigned) (R10 >> 32), (unsigned) (R10 & 0xFFFFFFFF),
(unsigned) (R11 >> 32), (unsigned) (R11 & 0xFFFFFFFF)));
BX_INFO(("| R12=%08x%08x R13=%08x%08x",
(unsigned) (R12 >> 32), (unsigned) (R12 & 0xFFFFFFFF),
(unsigned) (R13 >> 32), (unsigned) (R13 & 0xFFFFFFFF)));
BX_INFO(("| R14=%08x%08x R15=%08x%08x",
(unsigned) (R14 >> 32), (unsigned) (R14 & 0xFFFFFFFF),
(unsigned) (R15 >> 32), (unsigned) (R15 & 0xFFFFFFFF)));
}
else
#endif
{
BX_INFO(("| EAX=%08x EBX=%08x ECX=%08x EDX=%08x",
(unsigned) EAX, (unsigned) EBX, (unsigned) ECX, (unsigned) EDX));
BX_INFO(("| ESP=%08x EBP=%08x ESI=%08x EDI=%08x",
(unsigned) ESP, (unsigned) EBP, (unsigned) ESI, (unsigned) EDI));
}
BX_INFO(("| IOPL=%1u %s %s %s %s %s %s %s %s %s %s %s %s %s %s %s %s",
BX_CPU_THIS_PTR get_IOPL(),
BX_CPU_THIS_PTR get_ID() ? "ID" : "id",
BX_CPU_THIS_PTR get_VIP() ? "VIP" : "vip",
BX_CPU_THIS_PTR get_VIF() ? "VIF" : "vif",
BX_CPU_THIS_PTR get_AC() ? "AC" : "ac",
BX_CPU_THIS_PTR get_VM() ? "VM" : "vm",
BX_CPU_THIS_PTR get_RF() ? "RF" : "rf",
BX_CPU_THIS_PTR get_NT() ? "NT" : "nt",
BX_CPU_THIS_PTR get_OF() ? "OF" : "of",
BX_CPU_THIS_PTR get_DF() ? "DF" : "df",
BX_CPU_THIS_PTR get_IF() ? "IF" : "if",
BX_CPU_THIS_PTR get_TF() ? "TF" : "tf",
BX_CPU_THIS_PTR get_SF() ? "SF" : "sf",
BX_CPU_THIS_PTR get_ZF() ? "ZF" : "zf",
BX_CPU_THIS_PTR get_AF() ? "AF" : "af",
BX_CPU_THIS_PTR get_PF() ? "PF" : "pf",
BX_CPU_THIS_PTR get_CF() ? "CF" : "cf"));
BX_INFO(("| SEG sltr(index|ti|rpl) base limit G D"));
BX_INFO(("| CS:%04x( %04x| %01u| %1u) %08x %08x %1u %1u",
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].selector.value,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].selector.index,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].selector.ti,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].selector.rpl,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].cache.u.segment.base,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].cache.u.segment.limit_scaled,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].cache.u.segment.g,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_CS].cache.u.segment.d_b));
BX_INFO(("| DS:%04x( %04x| %01u| %1u) %08x %08x %1u %1u",
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_DS].selector.value,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_DS].selector.index,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_DS].selector.ti,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_DS].selector.rpl,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_DS].cache.u.segment.base,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_DS].cache.u.segment.limit_scaled,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_DS].cache.u.segment.g,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_DS].cache.u.segment.d_b));
BX_INFO(("| SS:%04x( %04x| %01u| %1u) %08x %08x %1u %1u",
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].selector.value,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].selector.index,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].selector.ti,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].selector.rpl,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.u.segment.base,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.u.segment.limit_scaled,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.u.segment.g,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_SS].cache.u.segment.d_b));
BX_INFO(("| ES:%04x( %04x| %01u| %1u) %08x %08x %1u %1u",
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_ES].selector.value,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_ES].selector.index,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_ES].selector.ti,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_ES].selector.rpl,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_ES].cache.u.segment.base,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_ES].cache.u.segment.limit_scaled,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_ES].cache.u.segment.g,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_ES].cache.u.segment.d_b));
BX_INFO(("| FS:%04x( %04x| %01u| %1u) %08x %08x %1u %1u",
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_FS].selector.value,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_FS].selector.index,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_FS].selector.ti,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_FS].selector.rpl,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_FS].cache.u.segment.base,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_FS].cache.u.segment.limit_scaled,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_FS].cache.u.segment.g,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_FS].cache.u.segment.d_b));
BX_INFO(("| GS:%04x( %04x| %01u| %1u) %08x %08x %1u %1u",
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_GS].selector.value,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_GS].selector.index,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_GS].selector.ti,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_GS].selector.rpl,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_GS].cache.u.segment.base,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_GS].cache.u.segment.limit_scaled,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_GS].cache.u.segment.g,
(unsigned) BX_CPU_THIS_PTR sregs[BX_SEG_REG_GS].cache.u.segment.d_b));
#if BX_SUPPORT_X86_64
if (long_mode()) {
BX_INFO(("| MSR_FS_BASE:%08x%08x",
(unsigned) (MSR_FSBASE >> 32), (unsigned) (MSR_FSBASE & 0xFFFFFFFF)));
BX_INFO(("| MSR_GS_BASE:%08x%08x",
(unsigned) (MSR_GSBASE >> 32), (unsigned) (MSR_GSBASE & 0xFFFFFFFF)));
BX_INFO(("| RIP=%08x%08x (%08x%08x)",
(unsigned) (BX_CPU_THIS_PTR gen_reg[BX_64BIT_REG_RIP].dword.hrx),
(unsigned) EIP,
(unsigned) (BX_CPU_THIS_PTR prev_rip >> 32),
(unsigned) (BX_CPU_THIS_PTR prev_rip & 0xffffffff)));
BX_INFO(("| CR0=0x%08x CR2=0x%08x%08x",
(unsigned) (BX_CPU_THIS_PTR cr0.get32()),
(unsigned) (BX_CPU_THIS_PTR cr2 >> 32),
(unsigned) (BX_CPU_THIS_PTR cr2 & 0xffffffff)));
BX_INFO(("| CR3=0x%08x CR4=0x%08x",
(unsigned) BX_CPU_THIS_PTR cr3, (unsigned) BX_CPU_THIS_PTR cr4.get32()));
}
else
#endif // BX_SUPPORT_X86_64
{
BX_INFO(("| EIP=%08x (%08x)", (unsigned) EIP,
(unsigned) BX_CPU_THIS_PTR prev_rip));
#if BX_CPU_LEVEL < 5
BX_INFO(("| CR0=0x%08x CR2=0x%08x CR3=0x%08x",
(unsigned) BX_CPU_THIS_PTR cr0.get32(),
(unsigned) BX_CPU_THIS_PTR cr2, (unsigned) BX_CPU_THIS_PTR cr3));
#else
BX_INFO(("| CR0=0x%08x CR2=0x%08x",
BX_CPU_THIS_PTR cr0.get32(), BX_CPU_THIS_PTR cr2));
BX_INFO(("| CR3=0x%08x CR4=0x%08x",
(unsigned) BX_CPU_THIS_PTR cr3,
(unsigned) BX_CPU_THIS_PTR cr4.get32()));
#endif
}
#if BX_DISASM
debug_disasm_instruction(offset);
#endif // #if BX_DISASM
}
#if BX_DEBUGGER
void BX_CPU_C::dbg_set_eip(bx_address val)
{
RIP = BX_CPU_THIS_PTR prev_rip = val;
invalidate_prefetch_q();
}
bx_bool BX_CPU_C::dbg_set_eflags(Bit32u val)
{
// returns 1=OK, 0=can't change
if (val & 0xffff0000) {
BX_INFO(("dbg_set_eflags: can't set upper 16 bits of EFLAGS !"));
return(0);
}
// make sure none of the system bits are being changed
Bit32u current_sys_bits = ((BX_CPU_THIS_PTR getB_NT()) << 14) |
(BX_CPU_THIS_PTR get_IOPL () << 12) |
((BX_CPU_THIS_PTR getB_TF()) << 8);
if (current_sys_bits != (val & 0x0000f100)) {
BX_INFO(("dbg_set_eflags: can't modify NT, IOPL, or TF !"));
return(0);
}
BX_CPU_THIS_PTR set_CF(val & 0x01); val >>= 2;
BX_CPU_THIS_PTR set_PF(val & 0x01); val >>= 2;
BX_CPU_THIS_PTR set_AF(val & 0x01); val >>= 2;
BX_CPU_THIS_PTR set_ZF(val & 0x01); val >>= 1;
BX_CPU_THIS_PTR set_SF(val & 0x01); val >>= 2;
BX_CPU_THIS_PTR set_DF(val & 0x01); val >>= 1;
BX_CPU_THIS_PTR set_OF(val & 0x01);
return(1);
}
unsigned BX_CPU_C::dbg_query_pending(void)
{
unsigned ret = 0;
if (BX_HRQ) { // DMA Hold Request
ret |= BX_DBG_PENDING_DMA;
}
if (is_unmasked_event_pending(BX_EVENT_PENDING_INTR)) {
ret |= BX_DBG_PENDING_IRQ;
}
return ret;
}
bx_bool BX_CPU_C::dbg_get_sreg(bx_dbg_sreg_t *sreg, unsigned sreg_no)
{
if (sreg_no > 5)
return(0);
sreg->valid = BX_CPU_THIS_PTR sregs[sreg_no].cache.valid;
sreg->sel = BX_CPU_THIS_PTR sregs[sreg_no].selector.value;
sreg->des_l = get_descriptor_l(&BX_CPU_THIS_PTR sregs[sreg_no].cache);
sreg->des_h = get_descriptor_h(&BX_CPU_THIS_PTR sregs[sreg_no].cache);
#if BX_SUPPORT_X86_64
sreg->dword3 = BX_CPU_THIS_PTR sregs[sreg_no].cache.u.segment.base >> 32;
#endif
return(1);
}
bx_bool BX_CPU_C::dbg_set_sreg(unsigned sreg_no, bx_segment_reg_t *sreg)
{
if (sreg_no < 6) {
BX_CPU_THIS_PTR sregs[sreg_no] = *sreg;
if (sreg_no == BX_SEG_REG_CS) {
handleCpuModeChange();
#if BX_CPU_LEVEL >= 4
handleAlignmentCheck(/* CPL change */);
#endif
invalidate_prefetch_q();
return 1;
}
}
return 0;
}
void BX_CPU_C::dbg_get_tr(bx_dbg_sreg_t *sreg)
{
sreg->valid = BX_CPU_THIS_PTR tr.cache.valid;
sreg->sel = BX_CPU_THIS_PTR tr.selector.value;
sreg->des_l = get_descriptor_l(&BX_CPU_THIS_PTR tr.cache);
sreg->des_h = get_descriptor_h(&BX_CPU_THIS_PTR tr.cache);
#if BX_SUPPORT_X86_64
sreg->dword3 = BX_CPU_THIS_PTR tr.cache.u.segment.base >> 32;
#endif
}
void BX_CPU_C::dbg_get_ldtr(bx_dbg_sreg_t *sreg)
{
sreg->valid = BX_CPU_THIS_PTR ldtr.cache.valid;
sreg->sel = BX_CPU_THIS_PTR ldtr.selector.value;
sreg->des_l = get_descriptor_l(&BX_CPU_THIS_PTR ldtr.cache);
sreg->des_h = get_descriptor_h(&BX_CPU_THIS_PTR ldtr.cache);
#if BX_SUPPORT_X86_64
sreg->dword3 = BX_CPU_THIS_PTR ldtr.cache.u.segment.base >> 32;
#endif
}
void BX_CPU_C::dbg_get_gdtr(bx_dbg_global_sreg_t *sreg)
{
sreg->base = BX_CPU_THIS_PTR gdtr.base;
sreg->limit = BX_CPU_THIS_PTR gdtr.limit;
}
void BX_CPU_C::dbg_get_idtr(bx_dbg_global_sreg_t *sreg)
{
sreg->base = BX_CPU_THIS_PTR idtr.base;
sreg->limit = BX_CPU_THIS_PTR idtr.limit;
}
#endif // #if BX_DEBUGGER
void BX_CPU_C::atexit(void)
{
debug(BX_CPU_THIS_PTR prev_rip);
}