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winedbg: Add helper to transfer memory between lvalues.
Signed-off-by: Eric Pouech <eric.pouech@gmail.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>
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c4548c04eb
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860de95630
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@ -392,6 +392,7 @@ extern void info_wine_dbg_channel(BOOL add, const char* chnl, const
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/* memory.c */
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extern BOOL memory_read_value(const struct dbg_lvalue* lvalue, DWORD size, void* result);
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extern BOOL memory_write_value(const struct dbg_lvalue* val, DWORD size, void* value);
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extern BOOL memory_transfer_value(const struct dbg_lvalue* to, const struct dbg_lvalue* from);
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extern BOOL memory_fetch_integer(const struct dbg_lvalue* lvalue, unsigned size,
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BOOL is_signed, dbg_lgint_t* ret);
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extern BOOL memory_store_integer(const struct dbg_lvalue* lvalue, dbg_lgint_t val);
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@ -133,6 +133,37 @@ BOOL memory_write_value(const struct dbg_lvalue* lvalue, DWORD size, void* value
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return ret;
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}
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/* transfer a block of memory
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* the two lvalue:s are expected to be of same size
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*/
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BOOL memory_transfer_value(const struct dbg_lvalue* to, const struct dbg_lvalue* from)
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{
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DWORD64 size_to, size_from;
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BYTE tmp[256];
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BYTE* ptr = tmp;
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BOOL ret;
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if (to->bitlen || from->bitlen) return FALSE;
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if (!types_get_info(&to->type, TI_GET_LENGTH, &size_to) ||
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!types_get_info(&from->type, TI_GET_LENGTH, &size_from) ||
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size_from != size_to) return FALSE;
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/* optimize debugger to debugger transfer */
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if (!to->in_debuggee && !from->in_debuggee)
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{
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memcpy(memory_to_linear_addr(&to->addr), memory_to_linear_addr(&from->addr), size_from);
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return TRUE;
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}
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if (size_to > sizeof(tmp))
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{
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ptr = malloc(size_from);
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if (!ptr) return FALSE;
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}
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ret = memory_read_value(from, size_from, ptr) &&
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memory_write_value(to, size_from, ptr);
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if (size_to > sizeof(tmp)) free(ptr);
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return ret;
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}
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/***********************************************************************
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* memory_examine
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*
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@ -162,30 +162,17 @@ void types_extract_as_address(const struct dbg_lvalue* lvalue, ADDRESS64* addr)
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BOOL types_store_value(struct dbg_lvalue* lvalue_to, const struct dbg_lvalue* lvalue_from)
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{
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dbg_lgint_t val;
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DWORD64 size;
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BOOL equal;
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if (!lvalue_to->bitlen && !lvalue_from->bitlen)
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{
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BOOL equal;
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if (!types_compare(lvalue_to->type, lvalue_from->type, &equal)) return FALSE;
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if (equal)
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{
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if (!types_get_info(&lvalue_to->type, TI_GET_LENGTH, &size)) return FALSE;
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if (sizeof(val) < size)
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{
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return memory_read_value(lvalue_from, size, &val) &&
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memory_write_value(lvalue_to, size, &val);
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}
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dbg_printf("NIY\n");
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/* else: should allocate intermediate buffer... */
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return FALSE;
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}
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return memory_transfer_value(lvalue_to, lvalue_from);
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}
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if (types_is_integral_type(lvalue_from) && types_is_integral_type(lvalue_to))
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{
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/* doing integer conversion (about sign, size) */
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val = types_extract_as_integer(lvalue_from);
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dbg_lgint_t val = types_extract_as_integer(lvalue_from);
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return memory_store_integer(lvalue_to, val);
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}
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/* FIXME: should support floats as well */
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