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/*
* Debugger memory handling
*
* Copyright 1993 Eric Youngdale
* Copyright 1995 Alexandre Julliard
* Copyright 2000-2005 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include "debugger.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(winedbg);
void* be_cpu_linearize(HANDLE hThread, const ADDRESS64* addr)
{
assert(addr->Mode == AddrModeFlat);
return (void*)(DWORD_PTR)addr->Offset;
}
BOOL be_cpu_build_addr(HANDLE hThread, const dbg_ctx_t *ctx, ADDRESS64* addr,
unsigned seg, DWORD64 offset)
{
addr->Mode = AddrModeFlat;
addr->Segment = 0; /* don't need segment */
addr->Offset = offset;
return TRUE;
}
void* memory_to_linear_addr(const ADDRESS64* addr)
{
return dbg_curr_process->be_cpu->linearize(dbg_curr_thread->handle, addr);
}
BOOL memory_get_current_pc(ADDRESS64* addr)
{
assert(dbg_curr_process->be_cpu->get_addr);
return dbg_curr_process->be_cpu->get_addr(dbg_curr_thread->handle, &dbg_context,
be_cpu_addr_pc, addr);
}
BOOL memory_get_current_stack(ADDRESS64* addr)
{
assert(dbg_curr_process->be_cpu->get_addr);
return dbg_curr_process->be_cpu->get_addr(dbg_curr_thread->handle, &dbg_context,
be_cpu_addr_stack, addr);
}
static void memory_report_invalid_addr(const void* addr)
{
ADDRESS64 address;
address.Mode = AddrModeFlat;
address.Segment = 0;
address.Offset = (ULONG_PTR)addr;
dbg_printf("*** Invalid address ");
print_address(&address, FALSE);
dbg_printf(" ***\n");
}
/***********************************************************************
* memory_read_value
*
* Read a memory value.
*/
BOOL memory_read_value(const struct dbg_lvalue* lvalue, DWORD size, void* result)
{
BOOL ret = FALSE;
if (lvalue->in_debuggee)
{
void* linear = memory_to_linear_addr(&lvalue->addr);
if (!(ret = dbg_read_memory(linear, result, size)))
memory_report_invalid_addr(linear);
}
else
{
if (lvalue->addr.Offset)
{
memcpy(result, (void*)(DWORD_PTR)lvalue->addr.Offset, size);
ret = TRUE;
}
}
return ret;
}
/***********************************************************************
* memory_write_value
*
* Store a value in memory.
*/
BOOL memory_write_value(const struct dbg_lvalue* lvalue, DWORD size, void* value)
{
BOOL ret = TRUE;
DWORD64 os;
if (!types_get_info(&lvalue->type, TI_GET_LENGTH, &os)) return FALSE;
if (size != os)
{
dbg_printf("Size mismatch in memory_write_value, got %I64u from type while expecting %lu\n",
os, size);
return FALSE;
}
/* FIXME: only works on little endian systems */
if (lvalue->in_debuggee)
{
void* linear = memory_to_linear_addr(&lvalue->addr);
if (!(ret = dbg_write_memory(linear, value, size)))
memory_report_invalid_addr(linear);
}
else
{
memcpy((void*)(DWORD_PTR)lvalue->addr.Offset, value, size);
}
return ret;
}
/* transfer a block of memory
* the two lvalue:s are expected to be of same size
*/
BOOL memory_transfer_value(const struct dbg_lvalue* to, const struct dbg_lvalue* from)
{
DWORD64 size_to, size_from;
BYTE tmp[256];
BYTE* ptr = tmp;
BOOL ret;
if (to->bitlen || from->bitlen) return FALSE;
if (!types_get_info(&to->type, TI_GET_LENGTH, &size_to) ||
!types_get_info(&from->type, TI_GET_LENGTH, &size_from) ||
size_from != size_to) return FALSE;
/* optimize debugger to debugger transfer */
if (!to->in_debuggee && !from->in_debuggee)
{
memcpy(memory_to_linear_addr(&to->addr), memory_to_linear_addr(&from->addr), size_from);
return TRUE;
}
if (size_to > sizeof(tmp))
{
ptr = malloc(size_from);
if (!ptr) return FALSE;
}
ret = memory_read_value(from, size_from, ptr) &&
memory_write_value(to, size_from, ptr);
if (size_to > sizeof(tmp)) free(ptr);
return ret;
}
/***********************************************************************
* memory_examine
*
* Implementation of the 'x' command.
*/
void memory_examine(const struct dbg_lvalue *lvalue, int count, char format)
{
int i;
char buffer[256];
ADDRESS64 addr;
void *linear;
types_extract_as_address(lvalue, &addr);
linear = memory_to_linear_addr(&addr);
if (format != 'i' && count > 1)
{
print_address(&addr, FALSE);
dbg_printf(": ");
}
switch (format)
{
case 'u':
if (count == 1) count = 256;
memory_get_string(dbg_curr_process, linear,
TRUE, TRUE, buffer, min(count, sizeof(buffer)));
dbg_printf("%s\n", buffer);
return;
case 's':
if (count == 1) count = 256;
memory_get_string(dbg_curr_process, linear,
TRUE, FALSE, buffer, min(count, sizeof(buffer)));
dbg_printf("%s\n", buffer);
return;
case 'i':
while (count-- && memory_disasm_one_insn(&addr));
return;
case 'g':
while (count--)
{
GUID guid;
if (!dbg_read_memory(linear, &guid, sizeof(guid)))
{
memory_report_invalid_addr(linear);
break;
}
dbg_printf("{%08lx-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}\n",
guid.Data1, guid.Data2, guid.Data3,
guid.Data4[0], guid.Data4[1], guid.Data4[2], guid.Data4[3],
guid.Data4[4], guid.Data4[5], guid.Data4[6], guid.Data4[7]);
linear = (char*)linear + sizeof(guid);
addr.Offset += sizeof(guid);
if (count)
{
print_address(&addr, FALSE);
dbg_printf(": ");
}
}
return;
#define DO_DUMP2(_t,_l,_f,_vv) { \
_t _v; \
for (i = 0; i < count; i++) { \
if (!dbg_read_memory(linear, &_v, sizeof(_t))) \
{ memory_report_invalid_addr(linear); break; } \
dbg_printf(_f, (_vv)); \
addr.Offset += sizeof(_t); \
linear = (char*)linear + sizeof(_t); \
if ((i % (_l)) == (_l) - 1 && i != count - 1) \
{ \
dbg_printf("\n"); \
print_address(&addr, FALSE); \
dbg_printf(": "); \
} \
} \
dbg_printf("\n"); \
}
#define DO_DUMP(_t,_l,_f) DO_DUMP2(_t,_l,_f,_v)
case 'x': DO_DUMP(int, 4, " %8.8x"); break;
case 'd': DO_DUMP(unsigned int, 4, " %4.4d"); break;
case 'w': DO_DUMP(unsigned short, 8, " %04x"); break;
case 'a':
if (sizeof(DWORD_PTR) == 4)
{
DO_DUMP(DWORD_PTR, 4, " %8.8Ix");
}
else
{
DO_DUMP(DWORD_PTR, 2, " %16.16Ix");
}
break;
case 'c': DO_DUMP2(char, 32, " %c", (_v < 0x20) ? ' ' : _v); break;
case 'b': DO_DUMP2(char, 16, " %02x", (_v) & 0xff); break;
}
}
BOOL memory_fetch_integer(const struct dbg_lvalue* lvalue, unsigned size,
BOOL is_signed, dbg_lgint_t* ret)
{
/* size must fit in ret and be a power of two */
if (size > sizeof(*ret) || (size & (size - 1))) return FALSE;
if (lvalue->bitlen)
{
struct dbg_lvalue alt_lvalue = *lvalue;
dbg_lguint_t mask;
DWORD bt;
/* FIXME: this test isn't sufficient, depending on start of bitfield
* (ie a 64 bit field can spread across 9 bytes)
*/
if (lvalue->bitlen > 8 * sizeof(dbg_lgint_t)) return FALSE;
alt_lvalue.addr.Offset += lvalue->bitstart >> 3;
/*
* Bitfield operation. We have to extract the field.
*/
if (!memory_read_value(&alt_lvalue, sizeof(*ret), ret)) return FALSE;
mask = ~(dbg_lguint_t)0 << lvalue->bitlen;
*ret >>= lvalue->bitstart & 7;
*ret &= ~mask;
/*
* OK, now we have the correct part of the number.
* Check to see whether the basic type is signed or not, and if so,
* we need to sign extend the number.
*/
if (types_get_info(&lvalue->type, TI_GET_BASETYPE, &bt) &&
(bt == btInt || bt == btLong) && (*ret & (1 << (lvalue->bitlen - 1))))
{
*ret |= mask;
}
}
else
{
/* we are on little endian CPU */
memset(ret, 0, sizeof(*ret)); /* clear unread bytes */
if (!memory_read_value(lvalue, size, ret)) return FALSE;
/* propagate sign information */
if (is_signed && size < 8 && (*ret >> (size * 8 - 1)) != 0)
{
dbg_lguint_t neg = -1;
*ret |= neg << (size * 8);
}
}
return TRUE;
}
BOOL memory_store_integer(const struct dbg_lvalue* lvalue, dbg_lgint_t val)
{
DWORD64 size;
if (!types_get_info(&lvalue->type, TI_GET_LENGTH, &size)) return FALSE;
if (lvalue->bitlen)
{
struct dbg_lvalue alt_lvalue = *lvalue;
dbg_lguint_t mask, dst;
/* FIXME: this test isn't sufficient, depending on start of bitfield
* (ie a 64 bit field can spread across 9 bytes)
*/
if (lvalue->bitlen > 8 * sizeof(dbg_lgint_t)) return FALSE;
/* mask is 1 where bitfield is present, 0 outside */
mask = (~(dbg_lguint_t)0 >> (sizeof(val) * 8 - lvalue->bitlen)) << (lvalue->bitstart & 7);
alt_lvalue.addr.Offset += lvalue->bitstart >> 3;
val <<= lvalue->bitstart & 7;
if (!memory_read_value(&alt_lvalue, (unsigned)size, &dst)) return FALSE;
val = (dst & ~mask) | (val & mask);
return memory_write_value(&alt_lvalue, (unsigned)size, &val);
}
/* this is simple if we're on a little endian CPU */
return memory_write_value(lvalue, (unsigned)size, &val);
}
BOOL memory_fetch_float(const struct dbg_lvalue* lvalue, double *ret)
{
DWORD64 size;
if (!types_get_info(&lvalue->type, TI_GET_LENGTH, &size)) return FALSE;
/* FIXME: this assumes that debuggee and debugger use the same
* representation for reals
*/
if (size > sizeof(*ret)) return FALSE;
if (!memory_read_value(lvalue, size, ret)) return FALSE;
if (size == sizeof(float)) *ret = *(float*)ret;
else if (size != sizeof(double)) return FALSE;
return TRUE;
}
BOOL memory_store_float(const struct dbg_lvalue* lvalue, double *ret)
{
DWORD64 size;
if (!types_get_info(&lvalue->type, TI_GET_LENGTH, &size)) return FALSE;
/* FIXME: this assumes that debuggee and debugger use the same
* representation for reals
*/
if (size > sizeof(*ret)) return FALSE;
if (size == sizeof(float))
{
float f = *ret;
return memory_write_value(lvalue, size, &f);
}
if (size != sizeof(double)) return FALSE;
return memory_write_value(lvalue, size, ret);
}
BOOL memory_get_string(struct dbg_process* pcs, void* addr, BOOL in_debuggee,
BOOL unicode, char* buffer, int size)
{
SIZE_T sz;
WCHAR* buffW;
buffer[0] = 0;
if (!addr) return FALSE;
if (in_debuggee)
{
BOOL ret;
if (!unicode) ret = pcs->process_io->read(pcs->handle, addr, buffer, size, &sz);
else
{
buffW = HeapAlloc(GetProcessHeap(), 0, size * sizeof(WCHAR));
ret = pcs->process_io->read(pcs->handle, addr, buffW, size * sizeof(WCHAR), &sz);
WideCharToMultiByte(CP_ACP, 0, buffW, sz / sizeof(WCHAR), buffer, size,
NULL, NULL);
HeapFree(GetProcessHeap(), 0, buffW);
}
if (size) buffer[size-1] = 0;
return ret;
}
else
{
lstrcpynA(buffer, addr, size);
}
return TRUE;
}
BOOL memory_get_string_indirect(struct dbg_process* pcs, void* addr, BOOL unicode, WCHAR* buffer, int size)
{
void* ad = 0;
SIZE_T sz;
buffer[0] = 0;
if (addr &&
pcs->process_io->read(pcs->handle, addr, &ad, pcs->be_cpu->pointer_size, &sz) && sz == pcs->be_cpu->pointer_size && ad)
{
LPSTR buff;
BOOL ret;
if (unicode)
ret = pcs->process_io->read(pcs->handle, ad, buffer, size * sizeof(WCHAR), &sz) && sz != 0;
else
{
if ((buff = HeapAlloc(GetProcessHeap(), 0, size)))
{
ret = pcs->process_io->read(pcs->handle, ad, buff, size, &sz) && sz != 0;
MultiByteToWideChar(CP_ACP, 0, buff, sz, buffer, size);
HeapFree(GetProcessHeap(), 0, buff);
}
else ret = FALSE;
}
if (size) buffer[size-1] = 0;
return ret;
}
return FALSE;
}
/*
* Convert an address offset to hex string. If mode == 32, treat offset as
* 32 bits (discard upper 32 bits), if mode == 64 use all 64 bits, if mode == 0
* treat as either 32 or 64 bits, depending on whether we're running as
* Wine32 or Wine64.
*/
char* memory_offset_to_string(char *str, DWORD64 offset, unsigned mode)
{
if (mode != 32 && mode != 64)
{
#ifdef _WIN64
mode = 64;
#else
mode = 32;
#endif
}
if (mode == 32)
sprintf(str, "0x%08x", (unsigned int) offset);
else
sprintf(str, "%#016I64x", offset);
return str;
}
static void dbg_print_sdecimal(dbg_lgint_t sv)
{
dbg_printf("%I64d", sv);
}
static void dbg_print_hex(DWORD size, dbg_lgint_t sv)
{
if (!sv)
dbg_printf("0");
else
/* clear unneeded high bits, esp. sign extension */
dbg_printf("%#I64x", sv & (~(dbg_lguint_t)0 >> (8 * (sizeof(dbg_lgint_t) - size))));
}
static void print_typed_basic(const struct dbg_lvalue* lvalue)
{
dbg_lgint_t val_int;
void* val_ptr;
double val_real;
DWORD64 size64;
DWORD tag, size, count, bt;
struct dbg_type type = lvalue->type;
struct dbg_type sub_type;
struct dbg_lvalue sub_lvalue;
if (!types_get_real_type(&type, &tag)) return;
switch (tag)
{
case SymTagBaseType:
if (!types_get_info(&type, TI_GET_LENGTH, &size64) ||
!types_get_info(&type, TI_GET_BASETYPE, &bt))
{
WINE_ERR("Couldn't get information\n");
RaiseException(DEBUG_STATUS_INTERNAL_ERROR, 0, 0, NULL);
return;
}
size = (DWORD)size64;
switch (bt)
{
case btInt:
case btLong:
if (!memory_fetch_integer(lvalue, size, TRUE, &val_int)) return;
if (size == 1) goto print_char;
dbg_print_hex(size, val_int);
break;
case btUInt:
case btULong:
if (!memory_fetch_integer(lvalue, size, FALSE, &val_int)) return;
dbg_print_hex(size, val_int);
break;
case btFloat:
if (!memory_fetch_float(lvalue, &val_real)) return;
dbg_printf("%f", val_real);
break;
case btChar:
case btWChar:
/* sometimes WCHAR is defined as btChar with size = 2, so discrimate
* Ansi/Unicode based on size, not on basetype
*/
if (!memory_fetch_integer(lvalue, size, TRUE, &val_int)) return;
print_char:
if ((size == 1 && isprint((char)val_int)) ||
(size == 2 && val_int < 127 && isprint((char)val_int)))
dbg_printf("'%c'", (char)val_int);
else
dbg_printf("%d", (int)val_int);
break;
case btBool:
if (!memory_fetch_integer(lvalue, size, TRUE, &val_int)) return;
dbg_printf("%s", val_int ? "true" : "false");
break;
default:
WINE_FIXME("Unsupported basetype %lu\n", bt);
break;
}
break;
case SymTagPointerType:
if (!types_array_index(lvalue, 0, &sub_lvalue))
{
dbg_printf("Internal symbol error: unable to access memory location %p",
memory_to_linear_addr(&lvalue->addr));
break;
}
val_ptr = memory_to_linear_addr(&sub_lvalue.addr);
if (types_get_real_type(&sub_lvalue.type, &tag) && tag == SymTagBaseType &&
types_get_info(&sub_lvalue.type, TI_GET_BASETYPE, &bt) &&
types_get_info(&sub_lvalue.type, TI_GET_LENGTH, &size64))
{
char buffer[1024];
if (!val_ptr) dbg_printf("0x0");
else if (((bt == btChar || bt == btInt) && size64 == 1) || (bt == btUInt && size64 == 2))
{
if (memory_get_string(dbg_curr_process, val_ptr, sub_lvalue.in_debuggee,
size64 == 2, buffer, sizeof(buffer)))
dbg_printf("\"%s\"", buffer);
else
dbg_printf("*** invalid address %p ***", val_ptr);
break;
}
}
dbg_printf("%p", val_ptr);
break;
case SymTagArrayType:
case SymTagUDT:
if (!memory_read_value(lvalue, sizeof(val_ptr), &val_ptr)) return;
dbg_printf("%p", val_ptr);
break;
case SymTagEnum:
{
BOOL ok = FALSE;
if (!types_get_info(&type, TI_GET_LENGTH, &size64) ||
!memory_fetch_integer(lvalue, size64, TRUE, &val_int)) return;
if (types_get_info(&type, TI_GET_CHILDRENCOUNT, &count))
{
char buffer[sizeof(TI_FINDCHILDREN_PARAMS) + 256 * sizeof(DWORD)];
TI_FINDCHILDREN_PARAMS* fcp = (TI_FINDCHILDREN_PARAMS*)buffer;
WCHAR* ptr;
VARIANT variant;
int i;
fcp->Start = 0;
while (count)
{
fcp->Count = min(count, 256);
if (types_get_info(&type, TI_FINDCHILDREN, fcp))
{
sub_type.module = type.module;
for (i = 0; i < min(fcp->Count, count); i++)
{
sub_type.id = fcp->ChildId[i];
if (!types_get_info(&sub_type, TI_GET_VALUE, &variant))
continue;
switch (V_VT(&variant))
{
case VT_I1: ok = (val_int == V_I1(&variant)); break;
case VT_I2: ok = (val_int == V_I2(&variant)); break;
case VT_I4: ok = (val_int == V_I4(&variant)); break;
case VT_I8: ok = (val_int == V_I8(&variant)); break;
default: WINE_FIXME("Unsupported variant type (%u)\n", V_VT(&variant));
}
if (ok && types_get_info(&sub_type, TI_GET_SYMNAME, &ptr) && ptr)
{
dbg_printf("%ls", ptr);
HeapFree(GetProcessHeap(), 0, ptr);
count = 0; /* so that we'll get away from outer loop */
break;
}
}
}
count -= min(count, 256);
fcp->Start += 256;
}
}
if (!ok) dbg_print_sdecimal(val_int);
}
break;
default:
WINE_FIXME("Unsupported tag %lu\n", tag);
break;
}
}
/***********************************************************************
* print_basic
*
* Implementation of the 'print' command.
*/
void print_basic(const struct dbg_lvalue* lvalue, char format)
{
if (lvalue->type.id == dbg_itype_none)
{
dbg_printf("Unable to evaluate expression\n");
return;
}
if (format != 0)
{
unsigned size;
dbg_lgint_t res = types_extract_as_lgint(lvalue, &size, NULL);
switch (format)
{
case 'x':
dbg_print_hex(size, res);
return;
case 'd':
dbg_print_sdecimal(res);
return;
case 'c':
dbg_printf("%d = '%c'", (char)(res & 0xff), (char)(res & 0xff));
return;
case 'u':
dbg_printf("%d = '%lc'", (WCHAR)(res & 0xFFFF), (WCHAR)(res & 0xFFFF));
return;
case 'i':
case 's':
case 'w':
case 'b':
dbg_printf("Format specifier '%c' is meaningless in 'print' command\n", format);
}
}
if (lvalue->type.id == dbg_itype_segptr)
{
dbg_print_sdecimal(types_extract_as_lgint(lvalue, NULL, NULL));
}
else print_typed_basic(lvalue);
}
void print_bare_address(const ADDRESS64* addr)
{
char hexbuf[MAX_OFFSET_TO_STR_LEN];
switch (addr->Mode)
{
case AddrModeFlat:
dbg_printf("%s", memory_offset_to_string(hexbuf, addr->Offset, 0));
break;
case AddrModeReal:
case AddrMode1616:
dbg_printf("0x%04x:0x%04x", addr->Segment, (unsigned) addr->Offset);
break;
case AddrMode1632:
dbg_printf("0x%04x:%s", addr->Segment,
memory_offset_to_string(hexbuf, addr->Offset, 32));
break;
default:
dbg_printf("Unknown mode %x", addr->Mode);
break;
}
}
/***********************************************************************
* print_address
*
* Print an 16- or 32-bit address, with the nearest symbol if any.
*/
void print_address(const ADDRESS64* addr, BOOLEAN with_line)
{
char buffer[sizeof(SYMBOL_INFO) + 256];
SYMBOL_INFO* si = (SYMBOL_INFO*)buffer;
DWORD_PTR lin = (DWORD_PTR)memory_to_linear_addr(addr);
DWORD64 disp64;
DWORD disp;
IMAGEHLP_MODULE im;
print_bare_address(addr);
si->SizeOfStruct = sizeof(*si);
si->MaxNameLen = 256;
im.SizeOfStruct = 0;
if (SymFromAddr(dbg_curr_process->handle, lin, &disp64, si) && disp64 < si->Size)
{
dbg_printf(" %s", si->Name);
if (disp64) dbg_printf("+0x%I64x", disp64);
}
else
{
im.SizeOfStruct = sizeof(im);
if (!SymGetModuleInfo(dbg_curr_process->handle, lin, &im)) return;
dbg_printf(" %s", im.ModuleName);
if (lin > im.BaseOfImage)
dbg_printf("+0x%Ix", lin - im.BaseOfImage);
}
if (with_line)
{
IMAGEHLP_LINE64 il;
il.SizeOfStruct = sizeof(il);
if (SymGetLineFromAddr64(dbg_curr_process->handle, lin, &disp, &il))
dbg_printf(" [%s:%lu]", il.FileName, il.LineNumber);
if (im.SizeOfStruct == 0) /* don't display again module if address is in module+disp form */
{
im.SizeOfStruct = sizeof(im);
if (SymGetModuleInfo(dbg_curr_process->handle, lin, &im))
dbg_printf(" in %s", im.ModuleName);
}
}
}
BOOL memory_disasm_one_insn(ADDRESS64* addr)
{
char ch;
print_address(addr, TRUE);
dbg_printf(": ");
if (!dbg_read_memory(memory_to_linear_addr(addr), &ch, sizeof(ch)))
{
dbg_printf("-- no code accessible --\n");
return FALSE;
}
dbg_curr_process->be_cpu->disasm_one_insn(addr, TRUE);
dbg_printf("\n");
return TRUE;
}
void memory_disassemble(const struct dbg_lvalue* xstart,
const struct dbg_lvalue* xend, int instruction_count)
{
static ADDRESS64 last = {0,0,0};
dbg_lgint_t stop = 0;
int i;
if (!xstart && !xend)
{
if (!last.Segment && !last.Offset) memory_get_current_pc(&last);
}
else
{
if (xstart)
types_extract_as_address(xstart, &last);
if (xend)
stop = types_extract_as_integer(xend);
}
for (i = 0; (instruction_count == 0 || i < instruction_count) &&
(stop == 0 || last.Offset <= stop); i++)
memory_disasm_one_insn(&last);
}
BOOL memory_get_register(DWORD regno, struct dbg_lvalue* lvalue, char* buffer, int len)
{
const struct dbg_internal_var* div;
/* negative register values are wine's dbghelp hacks
* see dlls/dbghelp/dbghelp_private.h for the details
*/
switch (regno)
{
case -1:
if (buffer) snprintf(buffer, len, "<internal error>");
return FALSE;
case -2:
if (buffer) snprintf(buffer, len, "<couldn't compute location>");
return FALSE;
case -3:
if (buffer) snprintf(buffer, len, "<is not available>");
return FALSE;
case -4:
if (buffer) snprintf(buffer, len, "<couldn't read memory>");
return FALSE;
case -5:
if (buffer) snprintf(buffer, len, "<has been optimized away by compiler>");
return FALSE;
}
for (div = dbg_curr_process->be_cpu->context_vars; div->name; div++)
{
if (div->val == regno)
{
if (!stack_get_register_frame(div, lvalue))
{
if (buffer) snprintf(buffer, len, "<register %s not accessible in this frame>", div->name);
return FALSE;
}
if (buffer) lstrcpynA(buffer, div->name, len);
return TRUE;
}
}
if (buffer) snprintf(buffer, len, "<unknown register %lu>", regno);
return FALSE;
}
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