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// Note: this file is #include'd in video_x.cpp |
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#ifdef ENABLE_VOSF |
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|
27 |
< |
/* |
28 |
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* Page-aligned memory allocation |
29 |
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*/ |
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#include <fcntl.h> |
28 |
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#include <sys/mman.h> |
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#include "sigsegv.h" |
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#include "vm_alloc.h" |
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|
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#ifdef ENABLE_MON |
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# include "mon.h" |
34 |
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#endif |
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|
36 |
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// Variables for Video on SEGV support |
37 |
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static uint8 *the_host_buffer; // Host frame buffer in VOSF mode |
38 |
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static uint32 the_buffer_size; // Size of allocated the_buffer |
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|
40 |
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struct ScreenPageInfo { |
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int top, bottom; // Mapping between this virtual page and Mac scanlines |
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}; |
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|
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struct ScreenInfo { |
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uintptr memBase; // Real start address |
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uintptr memStart; // Start address aligned to page boundary |
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uintptr memEnd; // Address of one-past-the-end of the screen |
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uint32 memLength; // Length of the memory addressed by the screen pages |
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|
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uint32 pageSize; // Size of a page |
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int pageBits; // Shift count to get the page number |
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uint32 pageCount; // Number of pages allocated to the screen |
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|
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bool dirty; // Flag: set if the frame buffer was touched |
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char * dirtyPages; // Table of flags set if page was altered |
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ScreenPageInfo * pageInfo; // Table of mappings page -> Mac scanlines |
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}; |
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|
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static ScreenInfo mainBuffer; |
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|
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#define PFLAG_SET_VALUE 0x00 |
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#define PFLAG_CLEAR_VALUE 0x01 |
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#define PFLAG_SET_VALUE_4 0x00000000 |
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#define PFLAG_CLEAR_VALUE_4 0x01010101 |
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#define PFLAG_SET(page) mainBuffer.dirtyPages[page] = PFLAG_SET_VALUE |
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#define PFLAG_CLEAR(page) mainBuffer.dirtyPages[page] = PFLAG_CLEAR_VALUE |
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#define PFLAG_ISSET(page) (mainBuffer.dirtyPages[page] == PFLAG_SET_VALUE) |
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#define PFLAG_ISCLEAR(page) (mainBuffer.dirtyPages[page] != PFLAG_SET_VALUE) |
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|
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#ifdef UNALIGNED_PROFITABLE |
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# define PFLAG_ISSET_4(page) (*((uint32 *)(mainBuffer.dirtyPages + (page))) == PFLAG_SET_VALUE_4) |
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# define PFLAG_ISCLEAR_4(page) (*((uint32 *)(mainBuffer.dirtyPages + (page))) == PFLAG_CLEAR_VALUE_4) |
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#else |
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# define PFLAG_ISSET_4(page) \ |
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PFLAG_ISSET(page ) && PFLAG_ISSET(page+1) \ |
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&& PFLAG_ISSET(page+2) && PFLAG_ISSET(page+3) |
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# define PFLAG_ISCLEAR_4(page) \ |
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PFLAG_ISCLEAR(page ) && PFLAG_ISCLEAR(page+1) \ |
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&& PFLAG_ISCLEAR(page+2) && PFLAG_ISCLEAR(page+3) |
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#endif |
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|
82 |
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// Set the selected page range [ first_page, last_page [ into the SET state |
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#define PFLAG_SET_RANGE(first_page, last_page) \ |
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memset(mainBuffer.dirtyPages + (first_page), PFLAG_SET_VALUE, \ |
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(last_page) - (first_page)) |
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|
87 |
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// Set the selected page range [ first_page, last_page [ into the CLEAR state |
88 |
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#define PFLAG_CLEAR_RANGE(first_page, last_page) \ |
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memset(mainBuffer.dirtyPages + (first_page), PFLAG_CLEAR_VALUE, \ |
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(last_page) - (first_page)) |
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|
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#define PFLAG_SET_ALL do { \ |
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PFLAG_SET_RANGE(0, mainBuffer.pageCount); \ |
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mainBuffer.dirty = true; \ |
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} while (0) |
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|
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#define PFLAG_CLEAR_ALL do { \ |
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PFLAG_CLEAR_RANGE(0, mainBuffer.pageCount); \ |
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mainBuffer.dirty = false; \ |
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} while (0) |
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|
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// Set the following macro definition to 1 if your system |
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// provides a really fast strchr() implementation |
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//#define HAVE_FAST_STRCHR 0 |
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|
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static inline int find_next_page_set(int page) |
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{ |
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#if HAVE_FAST_STRCHR |
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char *match = strchr(mainBuffer.dirtyPages + page, PFLAG_SET_VALUE); |
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return match ? match - mainBuffer.dirtyPages : mainBuffer.pageCount; |
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#else |
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while (PFLAG_ISCLEAR_4(page)) |
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page += 4; |
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while (PFLAG_ISCLEAR(page)) |
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page++; |
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return page; |
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#endif |
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} |
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|
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static inline int find_next_page_clear(int page) |
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{ |
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#if HAVE_FAST_STRCHR |
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char *match = strchr(mainBuffer.dirtyPages + page, PFLAG_CLEAR_VALUE); |
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return match ? match - mainBuffer.dirtyPages : mainBuffer.pageCount; |
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#else |
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while (PFLAG_ISSET_4(page)) |
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page += 4; |
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while (PFLAG_ISSET(page)) |
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page++; |
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return page; |
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#endif |
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} |
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|
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#ifdef HAVE_PTHREADS |
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static pthread_mutex_t vosf_lock = PTHREAD_MUTEX_INITIALIZER; // Mutex to protect frame buffer (dirtyPages in fact) |
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#define LOCK_VOSF pthread_mutex_lock(&vosf_lock); |
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#define UNLOCK_VOSF pthread_mutex_unlock(&vosf_lock); |
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#else |
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#define LOCK_VOSF |
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#define UNLOCK_VOSF |
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#endif |
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|
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static int log_base_2(uint32 x) |
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{ |
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uint32 mask = 0x80000000; |
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int l = 31; |
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while (l >= 0 && (x & mask) == 0) { |
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mask >>= 1; |
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l--; |
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} |
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return l; |
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} |
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|
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// Extend size to page boundary |
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static uint32 page_extend(uint32 size) |
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return (size + page_mask) & ~page_mask; |
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} |
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|
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// Screen fault handler |
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|
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/* |
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* Initialize mainBuffer structure |
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*/ |
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|
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static bool video_init_buffer(void) |
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{ |
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if (use_vosf) { |
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const uint32 page_size = getpagesize(); |
171 |
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const uint32 page_mask = page_size - 1; |
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|
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mainBuffer.memBase = (uintptr) the_buffer; |
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// Round up frame buffer base to page boundary |
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mainBuffer.memStart = (uintptr)((((unsigned long) the_buffer) + page_mask) & ~page_mask); |
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mainBuffer.memLength = the_buffer_size; |
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mainBuffer.memEnd = mainBuffer.memStart + mainBuffer.memLength; |
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|
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mainBuffer.pageSize = page_size; |
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mainBuffer.pageCount = (mainBuffer.memLength + page_mask)/mainBuffer.pageSize; |
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> |
mainBuffer.pageBits = log_base_2(mainBuffer.pageSize); |
182 |
> |
|
183 |
> |
if (mainBuffer.dirtyPages) { |
184 |
> |
free(mainBuffer.dirtyPages); |
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> |
mainBuffer.dirtyPages = NULL; |
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> |
} |
187 |
> |
|
188 |
> |
mainBuffer.dirtyPages = (char *) malloc(mainBuffer.pageCount + 2); |
189 |
> |
|
190 |
> |
if (mainBuffer.pageInfo) { |
191 |
> |
free(mainBuffer.pageInfo); |
192 |
> |
mainBuffer.pageInfo = NULL; |
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> |
} |
194 |
> |
|
195 |
> |
mainBuffer.pageInfo = (ScreenPageInfo *) malloc(mainBuffer.pageCount * sizeof(ScreenPageInfo)); |
196 |
> |
|
197 |
> |
if ((mainBuffer.dirtyPages == NULL) || (mainBuffer.pageInfo == NULL)) |
198 |
> |
return false; |
199 |
> |
|
200 |
> |
mainBuffer.dirty = false; |
201 |
> |
|
202 |
> |
PFLAG_CLEAR_ALL; |
203 |
> |
// Safety net to insure the loops in the update routines will terminate |
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> |
// See "How can we deal with array overrun conditions ?" hereunder for further details |
205 |
> |
PFLAG_CLEAR(mainBuffer.pageCount); |
206 |
> |
PFLAG_SET(mainBuffer.pageCount+1); |
207 |
> |
|
208 |
> |
uint32 a = 0; |
209 |
> |
for (int i = 0; i < mainBuffer.pageCount; i++) { |
210 |
> |
int y1 = a / VideoMonitor.mode.bytes_per_row; |
211 |
> |
if (y1 >= VideoMonitor.mode.y) |
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> |
y1 = VideoMonitor.mode.y - 1; |
213 |
> |
|
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> |
int y2 = (a + mainBuffer.pageSize) / VideoMonitor.mode.bytes_per_row; |
215 |
> |
if (y2 >= VideoMonitor.mode.y) |
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> |
y2 = VideoMonitor.mode.y - 1; |
217 |
> |
|
218 |
> |
mainBuffer.pageInfo[i].top = y1; |
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> |
mainBuffer.pageInfo[i].bottom = y2; |
220 |
> |
|
221 |
> |
a += mainBuffer.pageSize; |
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> |
if (a > mainBuffer.memLength) |
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> |
a = mainBuffer.memLength; |
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> |
} |
225 |
> |
|
226 |
> |
// We can now write-protect the frame buffer |
227 |
> |
if (vm_protect((char *)mainBuffer.memStart, mainBuffer.memLength, VM_PAGE_READ) != 0) |
228 |
> |
return false; |
229 |
> |
} |
230 |
> |
return true; |
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> |
} |
232 |
> |
|
233 |
> |
|
234 |
> |
/* |
235 |
> |
* Screen fault handler |
236 |
> |
*/ |
237 |
> |
|
238 |
|
static bool screen_fault_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction) |
239 |
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{ |
240 |
< |
D(bug("screen_fault_handler: ADDR=0x%08X from IP=0x%08X\n", fault_address, fault_instruction)); |
240 |
> |
// D(bug("screen_fault_handler: ADDR=0x%08X from IP=0x%08X\n", fault_address, fault_instruction)); |
241 |
|
const uintptr addr = (uintptr)fault_address; |
242 |
|
|
243 |
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/* Someone attempted to write to the frame buffer. Make it writeable |
244 |
< |
* now so that the data could actually be written. It will be made |
244 |
> |
* now so that the data could actually be written to. It will be made |
245 |
|
* read-only back in one of the screen update_*() functions. |
246 |
|
*/ |
247 |
|
if ((addr >= mainBuffer.memStart) && (addr < mainBuffer.memEnd)) { |
260 |
|
if (fault_instruction != SIGSEGV_INVALID_PC) |
261 |
|
fprintf(stderr, " [IP=0x%08X]", fault_instruction); |
262 |
|
fprintf(stderr, "\n"); |
263 |
+ |
#if EMULATED_68K |
264 |
+ |
uaecptr nextpc; |
265 |
+ |
extern void m68k_dumpstate(uaecptr *nextpc); |
266 |
+ |
m68k_dumpstate(&nextpc); |
267 |
+ |
#endif |
268 |
+ |
VideoQuitFullScreen(); |
269 |
+ |
#ifdef ENABLE_MON |
270 |
+ |
char *arg[4] = {"mon", "-m", "-r", NULL}; |
271 |
+ |
mon(3, arg); |
272 |
+ |
QuitEmulator(); |
273 |
+ |
#endif |
274 |
|
return false; |
275 |
|
} |
276 |
|
|
277 |
+ |
|
278 |
|
/* |
279 |
|
* Update display for Windowed mode and VOSF |
280 |
|
*/ |
281 |
|
|
282 |
|
// From video_blit.cpp |
283 |
|
extern void (*Screen_blit)(uint8 * dest, const uint8 * source, uint32 length); |
284 |
< |
extern bool Screen_blitter_init(XVisualInfo * visual_info, bool native_byte_order); |
284 |
> |
extern bool Screen_blitter_init(XVisualInfo * visual_info, bool native_byte_order, video_depth mac_depth); |
285 |
> |
extern uint32 ExpandMap[256]; |
286 |
|
|
287 |
|
/* How can we deal with array overrun conditions ? |
288 |
|
|
317 |
|
than pageCount. |
318 |
|
*/ |
319 |
|
|
320 |
< |
static inline void update_display_window_vosf(void) |
320 |
> |
static inline void update_display_window_vosf(driver_window *drv) |
321 |
|
{ |
322 |
|
int page = 0; |
323 |
|
for (;;) { |
338 |
|
const int y2 = mainBuffer.pageInfo[page - 1].bottom; |
339 |
|
const int height = y2 - y1 + 1; |
340 |
|
|
341 |
< |
const int bytes_per_row = VideoMonitor.bytes_per_row; |
131 |
< |
const int bytes_per_pixel = VideoMonitor.bytes_per_row / VideoMonitor.x; |
132 |
< |
int i = y1 * bytes_per_row, j; |
133 |
< |
|
134 |
< |
if (depth == 1) { |
341 |
> |
if (VideoMonitor.mode.depth < VDEPTH_8BIT) { |
342 |
|
|
343 |
|
// Update the_host_buffer and copy of the_buffer |
344 |
+ |
const int src_bytes_per_row = VideoMonitor.mode.bytes_per_row; |
345 |
+ |
const int dst_bytes_per_row = drv->img->bytes_per_line; |
346 |
+ |
const int pixels_per_byte = VideoMonitor.mode.x / src_bytes_per_row; |
347 |
+ |
int i1 = y1 * src_bytes_per_row, i2 = y1 * dst_bytes_per_row, j; |
348 |
|
for (j = y1; j <= y2; j++) { |
349 |
< |
Screen_blit(the_host_buffer + i, the_buffer + i, VideoMonitor.x >> 3); |
350 |
< |
i += bytes_per_row; |
349 |
> |
Screen_blit(the_host_buffer + i2, the_buffer + i1, VideoMonitor.mode.x / pixels_per_byte); |
350 |
> |
i1 += src_bytes_per_row; |
351 |
> |
i2 += dst_bytes_per_row; |
352 |
|
} |
353 |
|
|
354 |
|
} else { |
355 |
|
|
356 |
|
// Update the_host_buffer and copy of the_buffer |
357 |
+ |
const int src_bytes_per_row = VideoMonitor.mode.bytes_per_row; |
358 |
+ |
const int dst_bytes_per_row = drv->img->bytes_per_line; |
359 |
+ |
const int bytes_per_pixel = src_bytes_per_row / VideoMonitor.mode.x; |
360 |
+ |
int i1 = y1 * src_bytes_per_row, i2 = y1 * dst_bytes_per_row, j; |
361 |
|
for (j = y1; j <= y2; j++) { |
362 |
< |
Screen_blit(the_host_buffer + i, the_buffer + i, bytes_per_pixel * VideoMonitor.x); |
363 |
< |
i += bytes_per_row; |
362 |
> |
Screen_blit(the_host_buffer + i2, the_buffer + i1, bytes_per_pixel * VideoMonitor.mode.x); |
363 |
> |
i1 += src_bytes_per_row; |
364 |
> |
i2 += dst_bytes_per_row; |
365 |
|
} |
366 |
|
} |
367 |
|
|
368 |
< |
if (have_shm) |
369 |
< |
XShmPutImage(x_display, the_win, the_gc, img, 0, y1, 0, y1, VideoMonitor.x, height, 0); |
368 |
> |
if (drv->have_shm) |
369 |
> |
XShmPutImage(x_display, drv->w, drv->gc, drv->img, 0, y1, 0, y1, VideoMonitor.mode.x, height, 0); |
370 |
|
else |
371 |
< |
XPutImage(x_display, the_win, the_gc, img, 0, y1, 0, y1, VideoMonitor.x, height); |
371 |
> |
XPutImage(x_display, drv->w, drv->gc, drv->img, 0, y1, 0, y1, VideoMonitor.mode.x, height); |
372 |
|
} |
156 |
– |
|
373 |
|
mainBuffer.dirty = false; |
374 |
|
} |
375 |
|
|
376 |
|
|
377 |
|
/* |
378 |
|
* Update display for DGA mode and VOSF |
379 |
< |
* (only in Direct Addressing mode) |
379 |
> |
* (only in Real or Direct Addressing mode) |
380 |
|
*/ |
381 |
|
|
382 |
|
#if REAL_ADDRESSING || DIRECT_ADDRESSING |
400 |
|
const int y1 = mainBuffer.pageInfo[first_page].top; |
401 |
|
const int y2 = mainBuffer.pageInfo[page - 1].bottom; |
402 |
|
|
403 |
< |
const int bytes_per_row = VideoMonitor.bytes_per_row; |
404 |
< |
const int bytes_per_pixel = VideoMonitor.bytes_per_row / VideoMonitor.x; |
403 |
> |
const int bytes_per_row = VideoMonitor.mode.bytes_per_row; |
404 |
> |
const int bytes_per_pixel = VideoMonitor.mode.bytes_per_row / VideoMonitor.mode.x; |
405 |
|
int i, j; |
406 |
|
|
407 |
|
// Check for first column from left and first column |
408 |
|
// from right that have changed |
409 |
< |
int x1 = VideoMonitor.x * bytes_per_pixel - 1; |
409 |
> |
int x1 = VideoMonitor.mode.x * bytes_per_pixel - 1; |
410 |
|
for (j = y1; j <= y2; j++) { |
411 |
|
uint8 * const p1 = &the_buffer[j * bytes_per_row]; |
412 |
|
uint8 * const p2 = &the_buffer_copy[j * bytes_per_row]; |
423 |
|
for (j = y2; j >= y1; j--) { |
424 |
|
uint8 * const p1 = &the_buffer[j * bytes_per_row]; |
425 |
|
uint8 * const p2 = &the_buffer_copy[j * bytes_per_row]; |
426 |
< |
for (i = VideoMonitor.x * bytes_per_pixel - 1; i > x2; i--) { |
426 |
> |
for (i = VideoMonitor.mode.x * bytes_per_pixel - 1; i > x2; i--) { |
427 |
|
if (p1[i] != p2[i]) { |
428 |
|
x2 = i; |
429 |
|
break; |