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807 lines
24 KiB
C
807 lines
24 KiB
C
/*
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* Selector manipulation functions
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*
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* Copyright 1995 Alexandre Julliard
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*/
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#include <string.h>
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#include "wine/winbase16.h"
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#include "ldt.h"
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#include "miscemu.h"
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#include "selectors.h"
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#include "stackframe.h"
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#include "process.h"
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#include "debugtools.h"
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DEFAULT_DEBUG_CHANNEL(selector)
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/***********************************************************************
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* AllocSelectorArray (KERNEL.206)
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*/
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WORD WINAPI AllocSelectorArray16( WORD count )
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{
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WORD i, sel, size = 0;
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ldt_entry entry;
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if (!count) return 0;
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for (i = FIRST_LDT_ENTRY_TO_ALLOC; i < LDT_SIZE; i++)
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{
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if (!IS_LDT_ENTRY_FREE(i)) size = 0;
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else if (++size >= count) break;
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}
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if (i == LDT_SIZE) return 0;
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sel = i - size + 1;
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entry.base = 0;
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entry.type = SEGMENT_DATA;
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entry.seg_32bit = FALSE;
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entry.read_only = FALSE;
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entry.limit_in_pages = FALSE;
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entry.limit = 1; /* avoid 0 base and limit */
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for (i = 0; i < count; i++)
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{
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/* Mark selector as allocated */
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ldt_flags_copy[sel + i] |= LDT_FLAGS_ALLOCATED;
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LDT_SetEntry( sel + i, &entry );
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}
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return ENTRY_TO_SELECTOR( sel );
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}
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/***********************************************************************
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* AllocSelector (KERNEL.175)
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*/
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WORD WINAPI AllocSelector16( WORD sel )
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{
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WORD newsel, count, i;
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count = sel ? ((GET_SEL_LIMIT(sel) >> 16) + 1) : 1;
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newsel = AllocSelectorArray16( count );
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TRACE("(%04x): returning %04x\n",
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sel, newsel );
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if (!newsel) return 0;
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if (!sel) return newsel; /* nothing to copy */
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for (i = 0; i < count; i++)
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{
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ldt_entry entry;
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LDT_GetEntry( SELECTOR_TO_ENTRY(sel) + i, &entry );
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LDT_SetEntry( SELECTOR_TO_ENTRY(newsel) + i, &entry );
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}
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return newsel;
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}
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/***********************************************************************
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* FreeSelector (KERNEL.176)
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*/
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WORD WINAPI FreeSelector16( WORD sel )
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{
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if (IS_SELECTOR_FREE(sel)) return sel; /* error */
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SELECTOR_FreeBlock( sel, 1 );
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return 0;
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}
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/***********************************************************************
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* SELECTOR_SetEntries
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*
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* Set the LDT entries for an array of selectors.
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*/
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static void SELECTOR_SetEntries( WORD sel, const void *base, DWORD size,
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enum seg_type type, BOOL is32bit,
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BOOL readonly )
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{
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ldt_entry entry;
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WORD i, count;
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/* The limit for the first selector is the whole */
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/* block. The next selectors get a 64k limit. */
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entry.base = (unsigned long)base;
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entry.type = type;
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entry.seg_32bit = is32bit;
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entry.read_only = readonly;
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entry.limit_in_pages = (size > 0x100000);
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if (entry.limit_in_pages) entry.limit = ((size + 0xfff) >> 12) - 1;
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else entry.limit = size - 1;
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/* Make sure base and limit are not 0 together if the size is not 0 */
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if (!base && !entry.limit && size) entry.limit = 1;
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count = (size + 0xffff) / 0x10000;
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for (i = 0; i < count; i++)
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{
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LDT_SetEntry( SELECTOR_TO_ENTRY(sel) + i, &entry );
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entry.base += 0x10000;
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/* Apparently the next selectors should *not* get a 64k limit. */
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/* Can't remember where I read they should... --AJ */
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entry.limit -= entry.limit_in_pages ? 0x10 : 0x10000;
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}
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}
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/***********************************************************************
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* SELECTOR_AllocBlock
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*
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* Allocate selectors for a block of linear memory.
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*/
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WORD SELECTOR_AllocBlock( const void *base, DWORD size, enum seg_type type,
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BOOL is32bit, BOOL readonly )
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{
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WORD sel, count;
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if (!size) return 0;
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count = (size + 0xffff) / 0x10000;
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sel = AllocSelectorArray16( count );
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if (sel) SELECTOR_SetEntries( sel, base, size, type, is32bit, readonly );
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return sel;
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}
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/***********************************************************************
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* SELECTOR_MoveBlock
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*
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* Move a block of selectors in linear memory.
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*/
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void SELECTOR_MoveBlock( WORD sel, const void *new_base )
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{
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WORD i, count = (GET_SEL_LIMIT(sel) >> 16) + 1;
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for (i = 0; i < count; i++)
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{
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ldt_entry entry;
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LDT_GetEntry( SELECTOR_TO_ENTRY(sel) + i, &entry );
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entry.base = (unsigned long)new_base;
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LDT_SetEntry( SELECTOR_TO_ENTRY(sel) + i, &entry );
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}
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}
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/***********************************************************************
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* SELECTOR_FreeBlock
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*
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* Free a block of selectors.
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*/
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void SELECTOR_FreeBlock( WORD sel, WORD count )
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{
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WORD i, nextsel;
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ldt_entry entry;
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TRACE("(%04x,%d)\n", sel, count );
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sel &= ~(__AHINCR - 1); /* clear bottom bits of selector */
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nextsel = sel + (count << __AHSHIFT);
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#ifdef __i386__
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{
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/* Check if we are freeing current %fs or %gs selector */
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WORD fs, gs;
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GET_FS(fs);
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if ((fs >= sel) && (fs < nextsel))
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{
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WARN("Freeing %%fs selector (%04x), not good.\n", fs );
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SET_FS( 0 );
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}
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GET_GS(gs);
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if ((gs >= sel) && (gs < nextsel)) SET_GS( 0 );
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}
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#endif /* __i386__ */
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memset( &entry, 0, sizeof(entry) ); /* clear the LDT entries */
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for (i = SELECTOR_TO_ENTRY(sel); count; i++, count--)
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{
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LDT_SetEntry( i, &entry );
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ldt_flags_copy[i] &= ~LDT_FLAGS_ALLOCATED;
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}
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}
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/***********************************************************************
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* SELECTOR_ReallocBlock
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*
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* Change the size of a block of selectors.
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*/
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WORD SELECTOR_ReallocBlock( WORD sel, const void *base, DWORD size )
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{
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ldt_entry entry;
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WORD i, oldcount, newcount;
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if (!size) size = 1;
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oldcount = (GET_SEL_LIMIT(sel) >> 16) + 1;
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newcount = (size + 0xffff) >> 16;
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LDT_GetEntry( SELECTOR_TO_ENTRY(sel), &entry );
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if (oldcount < newcount) /* We need to add selectors */
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{
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/* Check if the next selectors are free */
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if (SELECTOR_TO_ENTRY(sel) + newcount > LDT_SIZE) i = oldcount;
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else
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for (i = oldcount; i < newcount; i++)
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if (!IS_LDT_ENTRY_FREE(SELECTOR_TO_ENTRY(sel)+i)) break;
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if (i < newcount) /* they are not free */
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{
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SELECTOR_FreeBlock( sel, oldcount );
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sel = AllocSelectorArray16( newcount );
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}
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else /* mark the selectors as allocated */
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{
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for (i = oldcount; i < newcount; i++)
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ldt_flags_copy[SELECTOR_TO_ENTRY(sel)+i] |=LDT_FLAGS_ALLOCATED;
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}
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}
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else if (oldcount > newcount) /* We need to remove selectors */
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{
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SELECTOR_FreeBlock( ENTRY_TO_SELECTOR(SELECTOR_TO_ENTRY(sel)+newcount),
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oldcount - newcount );
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}
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if (sel) SELECTOR_SetEntries( sel, base, size, entry.type,
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entry.seg_32bit, entry.read_only );
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return sel;
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}
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/***********************************************************************
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* PrestoChangoSelector (KERNEL.177)
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*/
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WORD WINAPI PrestoChangoSelector16( WORD selSrc, WORD selDst )
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{
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ldt_entry entry;
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LDT_GetEntry( SELECTOR_TO_ENTRY( selSrc ), &entry );
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entry.type ^= SEGMENT_CODE; /* toggle the executable bit */
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LDT_SetEntry( SELECTOR_TO_ENTRY( selDst ), &entry );
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return selDst;
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}
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/***********************************************************************
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* AllocCStoDSAlias (KERNEL.170)
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*/
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WORD WINAPI AllocCStoDSAlias16( WORD sel )
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{
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WORD newsel;
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ldt_entry entry;
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newsel = AllocSelectorArray16( 1 );
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TRACE("(%04x): returning %04x\n",
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sel, newsel );
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if (!newsel) return 0;
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LDT_GetEntry( SELECTOR_TO_ENTRY(sel), &entry );
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entry.type = SEGMENT_DATA;
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LDT_SetEntry( SELECTOR_TO_ENTRY(newsel), &entry );
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return newsel;
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}
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/***********************************************************************
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* AllocDStoCSAlias (KERNEL.171)
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*/
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WORD WINAPI AllocDStoCSAlias16( WORD sel )
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{
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WORD newsel;
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ldt_entry entry;
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newsel = AllocSelectorArray16( 1 );
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TRACE("(%04x): returning %04x\n",
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sel, newsel );
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if (!newsel) return 0;
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LDT_GetEntry( SELECTOR_TO_ENTRY(sel), &entry );
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entry.type = SEGMENT_CODE;
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LDT_SetEntry( SELECTOR_TO_ENTRY(newsel), &entry );
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return newsel;
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}
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/***********************************************************************
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* LongPtrAdd (KERNEL.180)
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*/
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void WINAPI LongPtrAdd16( DWORD ptr, DWORD add )
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{
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ldt_entry entry;
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LDT_GetEntry( SELECTOR_TO_ENTRY(SELECTOROF(ptr)), &entry );
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entry.base += add;
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LDT_SetEntry( SELECTOR_TO_ENTRY(SELECTOROF(ptr)), &entry );
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}
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/***********************************************************************
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* GetSelectorBase (KERNEL.186)
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*/
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DWORD WINAPI WIN16_GetSelectorBase( WORD sel )
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{
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/*
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* Note: For Win32s processes, the whole linear address space is
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* shifted by 0x10000 relative to the OS linear address space.
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* See the comment in msdos/vxd.c.
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*/
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DWORD base = GetSelectorBase( sel );
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return W32S_WINE2APP( base, W32S_APPLICATION() ? W32S_OFFSET : 0 );
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}
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DWORD WINAPI GetSelectorBase( WORD sel )
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{
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DWORD base = GET_SEL_BASE(sel);
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/* if base points into DOSMEM, assume we have to
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* return pointer into physical lower 1MB */
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return DOSMEM_MapLinearToDos( (LPVOID)base );
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}
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/***********************************************************************
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* SetSelectorBase (KERNEL.187)
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*/
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DWORD WINAPI WIN16_SetSelectorBase( WORD sel, DWORD base )
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{
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/*
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* Note: For Win32s processes, the whole linear address space is
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* shifted by 0x10000 relative to the OS linear address space.
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* See the comment in msdos/vxd.c.
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*/
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SetSelectorBase( sel,
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W32S_APP2WINE( base, W32S_APPLICATION() ? W32S_OFFSET : 0 ) );
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return sel;
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}
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WORD WINAPI SetSelectorBase( WORD sel, DWORD base )
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{
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ldt_entry entry;
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LDT_GetEntry( SELECTOR_TO_ENTRY(sel), &entry );
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entry.base = (DWORD)DOSMEM_MapDosToLinear(base);
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LDT_SetEntry( SELECTOR_TO_ENTRY(sel), &entry );
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return sel;
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}
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/***********************************************************************
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* GetSelectorLimit (KERNEL.188)
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*/
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DWORD WINAPI GetSelectorLimit16( WORD sel )
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{
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return GET_SEL_LIMIT(sel);
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}
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/***********************************************************************
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* SetSelectorLimit (KERNEL.189)
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*/
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WORD WINAPI SetSelectorLimit16( WORD sel, DWORD limit )
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{
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ldt_entry entry;
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LDT_GetEntry( SELECTOR_TO_ENTRY(sel), &entry );
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entry.limit_in_pages = (limit >= 0x100000);
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if (entry.limit_in_pages) entry.limit = limit >> 12;
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else entry.limit = limit;
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LDT_SetEntry( SELECTOR_TO_ENTRY(sel), &entry );
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return sel;
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}
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/***********************************************************************
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* SelectorAccessRights (KERNEL.196)
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*/
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WORD WINAPI SelectorAccessRights16( WORD sel, WORD op, WORD val )
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{
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ldt_entry entry;
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LDT_GetEntry( SELECTOR_TO_ENTRY(sel), &entry );
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if (op == 0) /* get */
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{
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return 0x01 | /* accessed */
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0x10 | /* not system */
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0x60 | /* DPL 3 */
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0x80 | /* present */
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((entry.read_only == 0) << 1) |
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(entry.type << 2) |
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(entry.seg_32bit << 14) |
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(entry.limit_in_pages << 15);
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}
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else /* set */
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{
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entry.read_only = ((val & 2) == 0);
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entry.type = (val >> 2) & 3;
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entry.seg_32bit = val & 0x4000;
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entry.limit_in_pages = val & 0x8000;
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LDT_SetEntry( SELECTOR_TO_ENTRY(sel), &entry );
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return 0;
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}
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}
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/***********************************************************************
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* IsBadCodePtr16 (KERNEL.336)
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*/
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BOOL16 WINAPI IsBadCodePtr16( SEGPTR lpfn )
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{
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WORD sel;
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ldt_entry entry;
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sel = SELECTOROF(lpfn);
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if (!sel) return TRUE;
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if (IS_SELECTOR_FREE(sel)) return TRUE;
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LDT_GetEntry( SELECTOR_TO_ENTRY(sel), &entry );
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if (entry.type != SEGMENT_CODE) return TRUE;
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if (OFFSETOF(lpfn) > GET_SEL_LIMIT(sel)) return TRUE;
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return FALSE;
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}
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/***********************************************************************
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* IsBadStringPtr16 (KERNEL.337)
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*/
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BOOL16 WINAPI IsBadStringPtr16( SEGPTR ptr, UINT16 size )
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{
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WORD sel;
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ldt_entry entry;
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sel = SELECTOROF(ptr);
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if (!sel) return TRUE;
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if (IS_SELECTOR_FREE(sel)) return TRUE;
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LDT_GetEntry( SELECTOR_TO_ENTRY(sel), &entry );
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if ((entry.type == SEGMENT_CODE) && entry.read_only) return TRUE;
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if (strlen(PTR_SEG_TO_LIN(ptr)) < size) size = strlen(PTR_SEG_TO_LIN(ptr));
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if (OFFSETOF(ptr) + size - 1 > GET_SEL_LIMIT(sel)) return TRUE;
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return FALSE;
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}
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/***********************************************************************
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* IsBadHugeReadPtr16 (KERNEL.346)
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*/
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BOOL16 WINAPI IsBadHugeReadPtr16( SEGPTR ptr, DWORD size )
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{
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WORD sel;
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ldt_entry entry;
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sel = SELECTOROF(ptr);
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if (!sel) return TRUE;
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if (IS_SELECTOR_FREE(sel)) return TRUE;
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LDT_GetEntry( SELECTOR_TO_ENTRY(sel), &entry );
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if ((entry.type == SEGMENT_CODE) && entry.read_only) return TRUE;
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if (OFFSETOF(ptr) + size - 1 > GET_SEL_LIMIT(sel)) return TRUE;
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return FALSE;
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}
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/***********************************************************************
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* IsBadHugeWritePtr16 (KERNEL.347)
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*/
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BOOL16 WINAPI IsBadHugeWritePtr16( SEGPTR ptr, DWORD size )
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{
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WORD sel;
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ldt_entry entry;
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sel = SELECTOROF(ptr);
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if (!sel) return TRUE;
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if (IS_SELECTOR_FREE(sel)) return TRUE;
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LDT_GetEntry( SELECTOR_TO_ENTRY(sel), &entry );
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if ((entry.type == SEGMENT_CODE) || entry.read_only) return TRUE;
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if (OFFSETOF(ptr) + size - 1 > GET_SEL_LIMIT(sel)) return TRUE;
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return FALSE;
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}
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/***********************************************************************
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* IsBadReadPtr16 (KERNEL.334)
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*/
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BOOL16 WINAPI IsBadReadPtr16( SEGPTR ptr, UINT16 size )
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{
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return IsBadHugeReadPtr16( ptr, size );
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}
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/***********************************************************************
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* IsBadWritePtr16 (KERNEL.335)
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*/
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BOOL16 WINAPI IsBadWritePtr16( SEGPTR ptr, UINT16 size )
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{
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return IsBadHugeWritePtr16( ptr, size );
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}
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/***********************************************************************
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* MemoryRead (TOOLHELP.78)
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*/
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DWORD WINAPI MemoryRead16( WORD sel, DWORD offset, void *buffer, DWORD count )
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{
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if (IS_SELECTOR_FREE(sel)) return 0;
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if (offset > GET_SEL_LIMIT(sel)) return 0;
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if (offset + count > GET_SEL_LIMIT(sel) + 1)
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count = GET_SEL_LIMIT(sel) + 1 - offset;
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memcpy( buffer, ((char *)GET_SEL_BASE(sel)) + offset, count );
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return count;
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}
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/***********************************************************************
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* MemoryWrite (TOOLHELP.79)
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*/
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DWORD WINAPI MemoryWrite16( WORD sel, DWORD offset, void *buffer, DWORD count )
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{
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if (IS_SELECTOR_FREE(sel)) return 0;
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if (offset > GET_SEL_LIMIT(sel)) return 0;
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if (offset + count > GET_SEL_LIMIT(sel) + 1)
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count = GET_SEL_LIMIT(sel) + 1 - offset;
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memcpy( ((char *)GET_SEL_BASE(sel)) + offset, buffer, count );
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return count;
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}
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/************************************* Win95 pointer mapping functions *
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*
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*/
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/***********************************************************************
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* MapSL (KERNEL32.523)
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*
|
|
* Maps fixed segmented pointer to linear.
|
|
*/
|
|
LPVOID WINAPI MapSL( SEGPTR sptr )
|
|
{
|
|
return (LPVOID)PTR_SEG_TO_LIN(sptr);
|
|
}
|
|
|
|
/***********************************************************************
|
|
* MapSLFix (KERNEL32.524)
|
|
*
|
|
* FIXME: MapSLFix and UnMapSLFixArray should probably prevent
|
|
* unexpected linear address change when GlobalCompact() shuffles
|
|
* moveable blocks.
|
|
*/
|
|
|
|
LPVOID WINAPI MapSLFix( SEGPTR sptr )
|
|
{
|
|
return (LPVOID)PTR_SEG_TO_LIN(sptr);
|
|
}
|
|
|
|
/***********************************************************************
|
|
* UnMapSLFixArray (KERNEL32.701)
|
|
*/
|
|
|
|
void WINAPI REGS_FUNC(UnMapSLFixArray)( SEGPTR sptr[], INT length, CONTEXT *context )
|
|
{
|
|
/* Must not change EAX, hence defined as 'register' function */
|
|
}
|
|
|
|
/***********************************************************************
|
|
* MapLS (KERNEL32.522)
|
|
*
|
|
* Maps linear pointer to segmented.
|
|
*/
|
|
SEGPTR WINAPI MapLS( LPVOID ptr )
|
|
{
|
|
if (!HIWORD(ptr))
|
|
return (SEGPTR)ptr;
|
|
else
|
|
{
|
|
WORD sel = SELECTOR_AllocBlock( ptr, 0x10000, SEGMENT_DATA, FALSE, FALSE );
|
|
return PTR_SEG_OFF_TO_SEGPTR( sel, 0 );
|
|
}
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* UnMapLS (KERNEL32.700)
|
|
*
|
|
* Free mapped selector.
|
|
*/
|
|
void WINAPI UnMapLS( SEGPTR sptr )
|
|
{
|
|
if (SELECTOROF(sptr))
|
|
SELECTOR_FreeBlock( SELECTOROF(sptr), 1 );
|
|
}
|
|
|
|
/***********************************************************************
|
|
* GetThreadSelectorEntry (KERNEL32)
|
|
* FIXME: add #ifdef i386 for non x86
|
|
*/
|
|
BOOL WINAPI GetThreadSelectorEntry( HANDLE hthread, DWORD sel,
|
|
LPLDT_ENTRY ldtent)
|
|
{
|
|
ldt_entry ldtentry;
|
|
|
|
LDT_GetEntry(SELECTOR_TO_ENTRY(sel),&ldtentry);
|
|
ldtent->BaseLow = ldtentry.base & 0x0000ffff;
|
|
ldtent->HighWord.Bits.BaseMid = (ldtentry.base & 0x00ff0000) >> 16;
|
|
ldtent->HighWord.Bits.BaseHi = (ldtentry.base & 0xff000000) >> 24;
|
|
ldtent->LimitLow = ldtentry.limit & 0x0000ffff;
|
|
ldtent->HighWord.Bits.LimitHi = (ldtentry.limit & 0x00ff0000) >> 16;
|
|
ldtent->HighWord.Bits.Dpl = 3;
|
|
ldtent->HighWord.Bits.Sys = 0;
|
|
ldtent->HighWord.Bits.Pres = 1;
|
|
ldtent->HighWord.Bits.Type = 0x10|(ldtentry.type << 2);
|
|
if (ldtentry.read_only)
|
|
ldtent->HighWord.Bits.Type|=0x2;
|
|
ldtent->HighWord.Bits.Granularity = ldtentry.limit_in_pages;
|
|
ldtent->HighWord.Bits.Default_Big = ldtentry.seg_32bit;
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* SMapLS* (KERNEL32)
|
|
* These functions map linear pointers at [EBP+xxx] to segmented pointers
|
|
* and return them.
|
|
* Win95 uses some kind of alias structs, which it stores in [EBP+x] to
|
|
* unravel them at SUnMapLS. We just store the segmented pointer there.
|
|
*/
|
|
static void
|
|
x_SMapLS_IP_EBP_x(CONTEXT *context,int argoff) {
|
|
DWORD val,ptr;
|
|
|
|
val =*(DWORD*)(EBP_reg(context)+argoff);
|
|
if (val<0x10000) {
|
|
ptr=val;
|
|
*(DWORD*)(EBP_reg(context)+argoff) = 0;
|
|
} else {
|
|
ptr = MapLS((LPVOID)val);
|
|
*(DWORD*)(EBP_reg(context)+argoff) = ptr;
|
|
}
|
|
EAX_reg(context) = ptr;
|
|
}
|
|
|
|
void WINAPI REGS_FUNC(SMapLS_IP_EBP_8)(CONTEXT *context) {x_SMapLS_IP_EBP_x(context,8);}
|
|
void WINAPI REGS_FUNC(SMapLS_IP_EBP_12)(CONTEXT *context) {x_SMapLS_IP_EBP_x(context,12);}
|
|
void WINAPI REGS_FUNC(SMapLS_IP_EBP_16)(CONTEXT *context) {x_SMapLS_IP_EBP_x(context,16);}
|
|
void WINAPI REGS_FUNC(SMapLS_IP_EBP_20)(CONTEXT *context) {x_SMapLS_IP_EBP_x(context,20);}
|
|
void WINAPI REGS_FUNC(SMapLS_IP_EBP_24)(CONTEXT *context) {x_SMapLS_IP_EBP_x(context,24);}
|
|
void WINAPI REGS_FUNC(SMapLS_IP_EBP_28)(CONTEXT *context) {x_SMapLS_IP_EBP_x(context,28);}
|
|
void WINAPI REGS_FUNC(SMapLS_IP_EBP_32)(CONTEXT *context) {x_SMapLS_IP_EBP_x(context,32);}
|
|
void WINAPI REGS_FUNC(SMapLS_IP_EBP_36)(CONTEXT *context) {x_SMapLS_IP_EBP_x(context,36);}
|
|
void WINAPI REGS_FUNC(SMapLS_IP_EBP_40)(CONTEXT *context) {x_SMapLS_IP_EBP_x(context,40);}
|
|
|
|
void WINAPI REGS_FUNC(SMapLS)( CONTEXT *context )
|
|
{
|
|
if (EAX_reg(context)>=0x10000) {
|
|
EAX_reg(context) = MapLS((LPVOID)EAX_reg(context));
|
|
EDX_reg(context) = EAX_reg(context);
|
|
} else {
|
|
EDX_reg(context) = 0;
|
|
}
|
|
}
|
|
|
|
void WINAPI REGS_FUNC(SUnMapLS)( CONTEXT *context )
|
|
{
|
|
if (EAX_reg(context)>=0x10000)
|
|
UnMapLS((SEGPTR)EAX_reg(context));
|
|
}
|
|
|
|
static void
|
|
x_SUnMapLS_IP_EBP_x(CONTEXT *context,int argoff) {
|
|
if (*(DWORD*)(EBP_reg(context)+argoff))
|
|
UnMapLS(*(DWORD*)(EBP_reg(context)+argoff));
|
|
*(DWORD*)(EBP_reg(context)+argoff)=0;
|
|
}
|
|
void WINAPI REGS_FUNC(SUnMapLS_IP_EBP_8)(CONTEXT *context) { x_SUnMapLS_IP_EBP_x(context,8); }
|
|
void WINAPI REGS_FUNC(SUnMapLS_IP_EBP_12)(CONTEXT *context) { x_SUnMapLS_IP_EBP_x(context,12); }
|
|
void WINAPI REGS_FUNC(SUnMapLS_IP_EBP_16)(CONTEXT *context) { x_SUnMapLS_IP_EBP_x(context,16); }
|
|
void WINAPI REGS_FUNC(SUnMapLS_IP_EBP_20)(CONTEXT *context) { x_SUnMapLS_IP_EBP_x(context,20); }
|
|
void WINAPI REGS_FUNC(SUnMapLS_IP_EBP_24)(CONTEXT *context) { x_SUnMapLS_IP_EBP_x(context,24); }
|
|
void WINAPI REGS_FUNC(SUnMapLS_IP_EBP_28)(CONTEXT *context) { x_SUnMapLS_IP_EBP_x(context,28); }
|
|
void WINAPI REGS_FUNC(SUnMapLS_IP_EBP_32)(CONTEXT *context) { x_SUnMapLS_IP_EBP_x(context,32); }
|
|
void WINAPI REGS_FUNC(SUnMapLS_IP_EBP_36)(CONTEXT *context) { x_SUnMapLS_IP_EBP_x(context,36); }
|
|
void WINAPI REGS_FUNC(SUnMapLS_IP_EBP_40)(CONTEXT *context) { x_SUnMapLS_IP_EBP_x(context,40); }
|
|
|
|
/**********************************************************************
|
|
* AllocMappedBuffer (KERNEL32.38)
|
|
*
|
|
* This is a undocumented KERNEL32 function that
|
|
* SMapLS's a GlobalAlloc'ed buffer.
|
|
*
|
|
* Input: EDI register: size of buffer to allocate
|
|
* Output: EDI register: pointer to buffer
|
|
*
|
|
* Note: The buffer is preceeded by 8 bytes:
|
|
* ...
|
|
* edi+0 buffer
|
|
* edi-4 SEGPTR to buffer
|
|
* edi-8 some magic Win95 needs for SUnMapLS
|
|
* (we use it for the memory handle)
|
|
*
|
|
* The SEGPTR is used by the caller!
|
|
*/
|
|
|
|
void WINAPI REGS_FUNC(AllocMappedBuffer)( CONTEXT *context )
|
|
{
|
|
HGLOBAL handle = GlobalAlloc(0, EDI_reg(context) + 8);
|
|
DWORD *buffer = (DWORD *)GlobalLock(handle);
|
|
SEGPTR ptr = 0;
|
|
|
|
if (buffer)
|
|
if (!(ptr = MapLS(buffer + 2)))
|
|
{
|
|
GlobalUnlock(handle);
|
|
GlobalFree(handle);
|
|
}
|
|
|
|
if (!ptr)
|
|
EAX_reg(context) = EDI_reg(context) = 0;
|
|
else
|
|
{
|
|
buffer[0] = handle;
|
|
buffer[1] = ptr;
|
|
|
|
EAX_reg(context) = (DWORD) ptr;
|
|
EDI_reg(context) = (DWORD)(buffer + 2);
|
|
}
|
|
}
|
|
|
|
/**********************************************************************
|
|
* FreeMappedBuffer (KERNEL32.39)
|
|
*
|
|
* Free a buffer allocated by AllocMappedBuffer
|
|
*
|
|
* Input: EDI register: pointer to buffer
|
|
*/
|
|
|
|
void WINAPI REGS_FUNC(FreeMappedBuffer)( CONTEXT *context )
|
|
{
|
|
if (EDI_reg(context))
|
|
{
|
|
DWORD *buffer = (DWORD *)EDI_reg(context) - 2;
|
|
|
|
UnMapLS(buffer[1]);
|
|
|
|
GlobalUnlock(buffer[0]);
|
|
GlobalFree(buffer[0]);
|
|
}
|
|
}
|
|
|
|
/**********************************************************************
|
|
* WOWGetVDMPointer (KERNEL32.55)
|
|
* Get linear from segmented pointer. (MSDN lib)
|
|
*/
|
|
LPVOID WINAPI WOWGetVDMPointer(DWORD vp,DWORD nrofbytes,BOOL protected)
|
|
{
|
|
/* FIXME: add size check too */
|
|
if (protected)
|
|
return PTR_SEG_TO_LIN(vp);
|
|
else
|
|
return DOSMEM_MapRealToLinear(vp);
|
|
}
|
|
|
|
/**********************************************************************
|
|
* GetVDMPointer32W (KERNEL.516)
|
|
*/
|
|
LPVOID WINAPI GetVDMPointer32W(DWORD vp,WORD mode)
|
|
{
|
|
return WOWGetVDMPointer(vp,0,(DWORD)mode);
|
|
}
|
|
|
|
/**********************************************************************
|
|
* WOWGetVDMPointerFix (KERNEL32.55)
|
|
* Dito, but fix heapsegment (MSDN lib)
|
|
*/
|
|
LPVOID WINAPI WOWGetVDMPointerFix(DWORD vp,DWORD nrofbytes,BOOL protected)
|
|
{
|
|
/* FIXME: fix heapsegment */
|
|
return WOWGetVDMPointer(vp,nrofbytes,protected);
|
|
}
|
|
|
|
/**********************************************************************
|
|
* WOWGetVDMPointerUnFix (KERNEL32.56)
|
|
*/
|
|
void WINAPI WOWGetVDMPointerUnfix(DWORD vp)
|
|
{
|
|
/* FIXME: unfix heapsegment */
|
|
}
|
|
|
|
/***********************************************************************
|
|
* UTSelectorOffsetToLinear (WIN32S16.48)
|
|
*
|
|
* rough guesswork, but seems to work (I had no "reasonable" docu)
|
|
*/
|
|
LPVOID WINAPI UTSelectorOffsetToLinear16(SEGPTR sptr)
|
|
{
|
|
return PTR_SEG_TO_LIN(sptr);
|
|
}
|
|
|
|
/***********************************************************************
|
|
* UTLinearToSelectorOffset (WIN32S16.49)
|
|
*
|
|
* FIXME: I don't know if that's the right way to do linear -> segmented
|
|
*/
|
|
SEGPTR WINAPI UTLinearToSelectorOffset16(LPVOID lptr)
|
|
{
|
|
return (SEGPTR)lptr;
|
|
}
|