| 1 |
|
/* |
| 2 |
|
* video_vosf.h - Video/graphics emulation, video on SEGV signals support |
| 3 |
|
* |
| 4 |
< |
* Basilisk II (C) 1997-2001 Christian Bauer |
| 4 |
> |
* Basilisk II (C) 1997-2002 Christian Bauer |
| 5 |
|
* |
| 6 |
|
* This program is free software; you can redistribute it and/or modify |
| 7 |
|
* it under the terms of the GNU General Public License as published by |
| 21 |
|
#ifndef VIDEO_VOSF_H |
| 22 |
|
#define VIDEO_VOSF_H |
| 23 |
|
|
| 24 |
< |
// Note: this file is #include'd in video_x.cpp |
| 24 |
> |
// Note: this file must be #include'd only in video_x.cpp |
| 25 |
|
#ifdef ENABLE_VOSF |
| 26 |
|
|
| 27 |
< |
/* |
| 28 |
< |
* Page-aligned memory allocation |
| 29 |
< |
*/ |
| 27 |
> |
#include <fcntl.h> |
| 28 |
> |
#include <sys/mman.h> |
| 29 |
> |
#include "sigsegv.h" |
| 30 |
> |
#include "vm_alloc.h" |
| 31 |
> |
|
| 32 |
> |
// Glue for SheepShaver and BasiliskII |
| 33 |
> |
#if POWERPC_ROM |
| 34 |
> |
#define X11_MONITOR_INIT /* nothing */ |
| 35 |
> |
#define VIDEO_DRV_INIT /* nothing */ |
| 36 |
> |
#define VIDEO_DRV_WINDOW the_win |
| 37 |
> |
#define VIDEO_DRV_GC the_gc |
| 38 |
> |
#define VIDEO_DRV_IMAGE img |
| 39 |
> |
#define VIDEO_DRV_HAVE_SHM have_shm |
| 40 |
> |
#define VIDEO_MODE_INIT VideoInfo const & mode = VModes[cur_mode] |
| 41 |
> |
#define VIDEO_MODE_ROW_BYTES mode.viRowBytes |
| 42 |
> |
#define VIDEO_MODE_X mode.viXsize |
| 43 |
> |
#define VIDEO_MODE_Y mode.viYsize |
| 44 |
> |
#define VIDEO_MODE_DEPTH mode.viAppleMode |
| 45 |
> |
enum { |
| 46 |
> |
VIDEO_DEPTH_1BIT = APPLE_1_BIT, |
| 47 |
> |
VIDEO_DEPTH_2BIT = APPLE_2_BIT, |
| 48 |
> |
VIDEO_DEPTH_4BIT = APPLE_4_BIT, |
| 49 |
> |
VIDEO_DEPTH_8BIT = APPLE_8_BIT, |
| 50 |
> |
VIDEO_DEPTH_16BIT = APPLE_16_BIT, |
| 51 |
> |
VIDEO_DEPTH_32BIT = APPLE_32_BIT |
| 52 |
> |
}; |
| 53 |
> |
#else |
| 54 |
> |
#define X11_MONITOR_INIT X11_monitor_desc &monitor |
| 55 |
> |
#define VIDEO_DRV_INIT driver_window *drv |
| 56 |
> |
#define VIDEO_DRV_WINDOW drv->w |
| 57 |
> |
#define VIDEO_DRV_GC drv->gc |
| 58 |
> |
#define VIDEO_DRV_IMAGE drv->img |
| 59 |
> |
#define VIDEO_DRV_HAVE_SHM drv->have_shm |
| 60 |
> |
#define VIDEO_MODE_INIT video_mode const & mode = drv->monitor.get_current_mode(); |
| 61 |
> |
#define VIDEO_MODE_ROW_BYTES mode.bytes_per_row |
| 62 |
> |
#define VIDEO_MODE_X mode.x |
| 63 |
> |
#define VIDEO_MODE_Y mode.y |
| 64 |
> |
#define VIDEO_MODE_DEPTH (int)mode.depth |
| 65 |
> |
enum { |
| 66 |
> |
VIDEO_DEPTH_1BIT = VDEPTH_1BIT, |
| 67 |
> |
VIDEO_DEPTH_2BIT = VDEPTH_2BIT, |
| 68 |
> |
VIDEO_DEPTH_4BIT = VDEPTH_4BIT, |
| 69 |
> |
VIDEO_DEPTH_8BIT = VDEPTH_8BIT, |
| 70 |
> |
VIDEO_DEPTH_16BIT = VDEPTH_16BIT, |
| 71 |
> |
VIDEO_DEPTH_32BIT = VDEPTH_32BIT |
| 72 |
> |
}; |
| 73 |
> |
#endif |
| 74 |
|
|
| 75 |
< |
// Align on page boundaries |
| 76 |
< |
static uintptr align_on_page_boundary(uintptr size) |
| 77 |
< |
{ |
| 78 |
< |
const uint32 page_size = getpagesize(); |
| 79 |
< |
const uint32 page_mask = page_size - 1; |
| 80 |
< |
return (size + page_mask) & ~page_mask; |
| 75 |
> |
// Variables for Video on SEGV support |
| 76 |
> |
static uint8 *the_host_buffer; // Host frame buffer in VOSF mode |
| 77 |
> |
|
| 78 |
> |
struct ScreenPageInfo { |
| 79 |
> |
int top, bottom; // Mapping between this virtual page and Mac scanlines |
| 80 |
> |
}; |
| 81 |
> |
|
| 82 |
> |
struct ScreenInfo { |
| 83 |
> |
uintptr memStart; // Start address aligned to page boundary |
| 84 |
> |
uint32 memLength; // Length of the memory addressed by the screen pages |
| 85 |
> |
|
| 86 |
> |
uintptr pageSize; // Size of a page |
| 87 |
> |
int pageBits; // Shift count to get the page number |
| 88 |
> |
uint32 pageCount; // Number of pages allocated to the screen |
| 89 |
> |
|
| 90 |
> |
bool dirty; // Flag: set if the frame buffer was touched |
| 91 |
> |
char * dirtyPages; // Table of flags set if page was altered |
| 92 |
> |
ScreenPageInfo * pageInfo; // Table of mappings page -> Mac scanlines |
| 93 |
> |
}; |
| 94 |
> |
|
| 95 |
> |
static ScreenInfo mainBuffer; |
| 96 |
> |
|
| 97 |
> |
#define PFLAG_SET_VALUE 0x00 |
| 98 |
> |
#define PFLAG_CLEAR_VALUE 0x01 |
| 99 |
> |
#define PFLAG_SET_VALUE_4 0x00000000 |
| 100 |
> |
#define PFLAG_CLEAR_VALUE_4 0x01010101 |
| 101 |
> |
#define PFLAG_SET(page) mainBuffer.dirtyPages[page] = PFLAG_SET_VALUE |
| 102 |
> |
#define PFLAG_CLEAR(page) mainBuffer.dirtyPages[page] = PFLAG_CLEAR_VALUE |
| 103 |
> |
#define PFLAG_ISSET(page) (mainBuffer.dirtyPages[page] == PFLAG_SET_VALUE) |
| 104 |
> |
#define PFLAG_ISCLEAR(page) (mainBuffer.dirtyPages[page] != PFLAG_SET_VALUE) |
| 105 |
> |
|
| 106 |
> |
#ifdef UNALIGNED_PROFITABLE |
| 107 |
> |
# define PFLAG_ISSET_4(page) (*((uint32 *)(mainBuffer.dirtyPages + (page))) == PFLAG_SET_VALUE_4) |
| 108 |
> |
# define PFLAG_ISCLEAR_4(page) (*((uint32 *)(mainBuffer.dirtyPages + (page))) == PFLAG_CLEAR_VALUE_4) |
| 109 |
> |
#else |
| 110 |
> |
# define PFLAG_ISSET_4(page) \ |
| 111 |
> |
PFLAG_ISSET(page ) && PFLAG_ISSET(page+1) \ |
| 112 |
> |
&& PFLAG_ISSET(page+2) && PFLAG_ISSET(page+3) |
| 113 |
> |
# define PFLAG_ISCLEAR_4(page) \ |
| 114 |
> |
PFLAG_ISCLEAR(page ) && PFLAG_ISCLEAR(page+1) \ |
| 115 |
> |
&& PFLAG_ISCLEAR(page+2) && PFLAG_ISCLEAR(page+3) |
| 116 |
> |
#endif |
| 117 |
> |
|
| 118 |
> |
// Set the selected page range [ first_page, last_page [ into the SET state |
| 119 |
> |
#define PFLAG_SET_RANGE(first_page, last_page) \ |
| 120 |
> |
memset(mainBuffer.dirtyPages + (first_page), PFLAG_SET_VALUE, \ |
| 121 |
> |
(last_page) - (first_page)) |
| 122 |
> |
|
| 123 |
> |
// Set the selected page range [ first_page, last_page [ into the CLEAR state |
| 124 |
> |
#define PFLAG_CLEAR_RANGE(first_page, last_page) \ |
| 125 |
> |
memset(mainBuffer.dirtyPages + (first_page), PFLAG_CLEAR_VALUE, \ |
| 126 |
> |
(last_page) - (first_page)) |
| 127 |
> |
|
| 128 |
> |
#define PFLAG_SET_ALL do { \ |
| 129 |
> |
PFLAG_SET_RANGE(0, mainBuffer.pageCount); \ |
| 130 |
> |
mainBuffer.dirty = true; \ |
| 131 |
> |
} while (0) |
| 132 |
> |
|
| 133 |
> |
#define PFLAG_CLEAR_ALL do { \ |
| 134 |
> |
PFLAG_CLEAR_RANGE(0, mainBuffer.pageCount); \ |
| 135 |
> |
mainBuffer.dirty = false; \ |
| 136 |
> |
} while (0) |
| 137 |
> |
|
| 138 |
> |
// Set the following macro definition to 1 if your system |
| 139 |
> |
// provides a really fast strchr() implementation |
| 140 |
> |
//#define HAVE_FAST_STRCHR 0 |
| 141 |
> |
|
| 142 |
> |
static inline int find_next_page_set(int page) |
| 143 |
> |
{ |
| 144 |
> |
#if HAVE_FAST_STRCHR |
| 145 |
> |
char *match = strchr(mainBuffer.dirtyPages + page, PFLAG_SET_VALUE); |
| 146 |
> |
return match ? match - mainBuffer.dirtyPages : mainBuffer.pageCount; |
| 147 |
> |
#else |
| 148 |
> |
while (PFLAG_ISCLEAR_4(page)) |
| 149 |
> |
page += 4; |
| 150 |
> |
while (PFLAG_ISCLEAR(page)) |
| 151 |
> |
page++; |
| 152 |
> |
return page; |
| 153 |
> |
#endif |
| 154 |
|
} |
| 155 |
|
|
| 156 |
< |
// Allocate memory on page boundary |
| 40 |
< |
static void * allocate_framebuffer(uint32 size, uint8 * hint = 0) |
| 156 |
> |
static inline int find_next_page_clear(int page) |
| 157 |
|
{ |
| 158 |
< |
// Remind that the system can allocate at 0x00000000... |
| 159 |
< |
return mmap((caddr_t)hint, size, PROT_READ | PROT_WRITE, MAP_PRIVATE, zero_fd, 0); |
| 158 |
> |
#if HAVE_FAST_STRCHR |
| 159 |
> |
char *match = strchr(mainBuffer.dirtyPages + page, PFLAG_CLEAR_VALUE); |
| 160 |
> |
return match ? match - mainBuffer.dirtyPages : mainBuffer.pageCount; |
| 161 |
> |
#else |
| 162 |
> |
while (PFLAG_ISSET_4(page)) |
| 163 |
> |
page += 4; |
| 164 |
> |
while (PFLAG_ISSET(page)) |
| 165 |
> |
page++; |
| 166 |
> |
return page; |
| 167 |
> |
#endif |
| 168 |
|
} |
| 169 |
|
|
| 170 |
+ |
#ifdef HAVE_SPINLOCKS |
| 171 |
+ |
static spinlock_t vosf_lock = SPIN_LOCK_UNLOCKED; // Mutex to protect frame buffer (dirtyPages in fact) |
| 172 |
+ |
#define LOCK_VOSF spin_lock(&vosf_lock) |
| 173 |
+ |
#define UNLOCK_VOSF spin_unlock(&vosf_lock) |
| 174 |
+ |
#elif defined(HAVE_PTHREADS) |
| 175 |
+ |
static pthread_mutex_t vosf_lock = PTHREAD_MUTEX_INITIALIZER; // Mutex to protect frame buffer (dirtyPages in fact) |
| 176 |
+ |
#define LOCK_VOSF pthread_mutex_lock(&vosf_lock); |
| 177 |
+ |
#define UNLOCK_VOSF pthread_mutex_unlock(&vosf_lock); |
| 178 |
+ |
#else |
| 179 |
+ |
#define LOCK_VOSF |
| 180 |
+ |
#define UNLOCK_VOSF |
| 181 |
+ |
#endif |
| 182 |
|
|
| 183 |
< |
/* |
| 48 |
< |
* Screen fault handler |
| 49 |
< |
*/ |
| 50 |
< |
|
| 51 |
< |
const uintptr INVALID_PC = (uintptr)-1; |
| 52 |
< |
|
| 53 |
< |
static inline void do_handle_screen_fault(uintptr addr, uintptr pc = INVALID_PC) |
| 183 |
> |
static int log_base_2(uint32 x) |
| 184 |
|
{ |
| 185 |
< |
/* Someone attempted to write to the frame buffer. Make it writeable |
| 186 |
< |
* now so that the data could actually be written. It will be made |
| 187 |
< |
* read-only back in one of the screen update_*() functions. |
| 188 |
< |
*/ |
| 189 |
< |
if ((addr >= mainBuffer.memStart) && (addr < mainBuffer.memEnd)) { |
| 60 |
< |
const int page = (addr - mainBuffer.memStart) >> mainBuffer.pageBits; |
| 61 |
< |
caddr_t page_ad = (caddr_t)(addr & ~(mainBuffer.pageSize - 1)); |
| 62 |
< |
LOCK_VOSF; |
| 63 |
< |
PFLAG_SET(page); |
| 64 |
< |
mprotect(page_ad, mainBuffer.pageSize, PROT_READ | PROT_WRITE); |
| 65 |
< |
mainBuffer.dirty = true; |
| 66 |
< |
UNLOCK_VOSF; |
| 67 |
< |
return; |
| 185 |
> |
uint32 mask = 0x80000000; |
| 186 |
> |
int l = 31; |
| 187 |
> |
while (l >= 0 && (x & mask) == 0) { |
| 188 |
> |
mask >>= 1; |
| 189 |
> |
l--; |
| 190 |
|
} |
| 191 |
< |
|
| 70 |
< |
/* Otherwise, we don't know how to handle the fault, let it crash */ |
| 71 |
< |
fprintf(stderr, "do_handle_screen_fault: unhandled address 0x%08X", addr); |
| 72 |
< |
if (pc != INVALID_PC) |
| 73 |
< |
fprintf(stderr, " [IP=0x%08X]", pc); |
| 74 |
< |
fprintf(stderr, "\n"); |
| 75 |
< |
|
| 76 |
< |
signal(SIGSEGV, SIG_DFL); |
| 191 |
> |
return l; |
| 192 |
|
} |
| 193 |
|
|
| 194 |
< |
#if defined(HAVE_SIGINFO_T) |
| 195 |
< |
|
| 81 |
< |
static void Screen_fault_handler(int, siginfo_t * sip, void *) |
| 194 |
> |
// Extend size to page boundary |
| 195 |
> |
static uint32 page_extend(uint32 size) |
| 196 |
|
{ |
| 197 |
< |
D(bug("Screen_fault_handler: ADDR=0x%08X\n", sip->si_addr)); |
| 198 |
< |
do_handle_screen_fault((uintptr)sip->si_addr); |
| 197 |
> |
const uint32 page_size = getpagesize(); |
| 198 |
> |
const uint32 page_mask = page_size - 1; |
| 199 |
> |
return (size + page_mask) & ~page_mask; |
| 200 |
|
} |
| 201 |
|
|
| 87 |
– |
#elif defined(HAVE_SIGCONTEXT_SUBTERFUGE) |
| 202 |
|
|
| 203 |
< |
# if defined(__i386__) && defined(__linux__) |
| 204 |
< |
static void Screen_fault_handler(int, struct sigcontext scs) |
| 205 |
< |
{ |
| 92 |
< |
D(bug("Screen_fault_handler: ADDR=0x%08X from IP=0x%08X\n", scs.cr2, scs.eip)); |
| 93 |
< |
do_handle_screen_fault((uintptr)scs.cr2, (uintptr)scs.eip); |
| 94 |
< |
} |
| 95 |
< |
|
| 96 |
< |
# elif defined(__m68k__) && defined(__NetBSD__) |
| 203 |
> |
/* |
| 204 |
> |
* Initialize the VOSF system (mainBuffer structure, SIGSEGV handler) |
| 205 |
> |
*/ |
| 206 |
|
|
| 207 |
< |
# include <m68k/frame.h> |
| 99 |
< |
static void Screen_fault_handler(int, int code, struct sigcontext *scp) |
| 207 |
> |
static bool video_vosf_init(X11_MONITOR_INIT) |
| 208 |
|
{ |
| 209 |
< |
D(bug("Screen_fault_handler: ADDR=0x%08X\n", code)); |
| 210 |
< |
struct sigstate { |
| 211 |
< |
int ss_flags; |
| 212 |
< |
struct frame ss_frame; |
| 213 |
< |
}; |
| 214 |
< |
struct sigstate *state = (struct sigstate *)scp->sc_ap; |
| 215 |
< |
uintptr fault_addr; |
| 216 |
< |
switch (state->ss_frame.f_format) { |
| 217 |
< |
case 7: // 68040 access error |
| 218 |
< |
// "code" is sometimes unreliable (i.e. contains NULL or a bogus address), reason unknown |
| 219 |
< |
fault_addr = state->ss_frame.f_fmt7.f_fa; |
| 220 |
< |
break; |
| 221 |
< |
default: |
| 222 |
< |
fault_addr = (uintptr)code; |
| 223 |
< |
break; |
| 209 |
> |
VIDEO_MODE_INIT; |
| 210 |
> |
|
| 211 |
> |
const uintptr page_size = getpagesize(); |
| 212 |
> |
const uintptr page_mask = page_size - 1; |
| 213 |
> |
|
| 214 |
> |
// Round up frame buffer base to page boundary |
| 215 |
> |
mainBuffer.memStart = (((uintptr) the_buffer) + page_mask) & ~page_mask; |
| 216 |
> |
|
| 217 |
> |
// The frame buffer size shall already be aligned to page boundary (use page_extend) |
| 218 |
> |
mainBuffer.memLength = the_buffer_size; |
| 219 |
> |
|
| 220 |
> |
mainBuffer.pageSize = page_size; |
| 221 |
> |
mainBuffer.pageBits = log_base_2(mainBuffer.pageSize); |
| 222 |
> |
mainBuffer.pageCount = (mainBuffer.memLength + page_mask)/mainBuffer.pageSize; |
| 223 |
> |
|
| 224 |
> |
// The "2" more bytes requested are a safety net to insure the |
| 225 |
> |
// loops in the update routines will terminate. |
| 226 |
> |
// See "How can we deal with array overrun conditions ?" hereunder for further details. |
| 227 |
> |
mainBuffer.dirtyPages = (char *) malloc(mainBuffer.pageCount + 2); |
| 228 |
> |
if (mainBuffer.dirtyPages == NULL) |
| 229 |
> |
return false; |
| 230 |
> |
|
| 231 |
> |
PFLAG_CLEAR_ALL; |
| 232 |
> |
PFLAG_CLEAR(mainBuffer.pageCount); |
| 233 |
> |
PFLAG_SET(mainBuffer.pageCount+1); |
| 234 |
> |
|
| 235 |
> |
// Allocate and fill in pageInfo with start and end (inclusive) row in number of bytes |
| 236 |
> |
mainBuffer.pageInfo = (ScreenPageInfo *) malloc(mainBuffer.pageCount * sizeof(ScreenPageInfo)); |
| 237 |
> |
if (mainBuffer.pageInfo == NULL) |
| 238 |
> |
return false; |
| 239 |
> |
|
| 240 |
> |
uint32 a = 0; |
| 241 |
> |
for (unsigned i = 0; i < mainBuffer.pageCount; i++) { |
| 242 |
> |
unsigned y1 = a / VIDEO_MODE_ROW_BYTES; |
| 243 |
> |
if (y1 >= VIDEO_MODE_Y) |
| 244 |
> |
y1 = VIDEO_MODE_Y - 1; |
| 245 |
> |
|
| 246 |
> |
unsigned y2 = (a + mainBuffer.pageSize) / VIDEO_MODE_ROW_BYTES; |
| 247 |
> |
if (y2 >= VIDEO_MODE_Y) |
| 248 |
> |
y2 = VIDEO_MODE_Y - 1; |
| 249 |
> |
|
| 250 |
> |
mainBuffer.pageInfo[i].top = y1; |
| 251 |
> |
mainBuffer.pageInfo[i].bottom = y2; |
| 252 |
> |
|
| 253 |
> |
a += mainBuffer.pageSize; |
| 254 |
> |
if (a > mainBuffer.memLength) |
| 255 |
> |
a = mainBuffer.memLength; |
| 256 |
|
} |
| 257 |
< |
do_handle_screen_fault(fault_addr); |
| 257 |
> |
|
| 258 |
> |
// We can now write-protect the frame buffer |
| 259 |
> |
if (vm_protect((char *)mainBuffer.memStart, mainBuffer.memLength, VM_PAGE_READ) != 0) |
| 260 |
> |
return false; |
| 261 |
> |
|
| 262 |
> |
// The frame buffer is sane, i.e. there is no write to it yet |
| 263 |
> |
mainBuffer.dirty = false; |
| 264 |
> |
return true; |
| 265 |
|
} |
| 266 |
|
|
| 120 |
– |
# elif defined(__powerpc__) && defined(__linux__) |
| 267 |
|
|
| 268 |
< |
static void Screen_fault_handler(int, struct sigcontext_struct *scs) |
| 268 |
> |
/* |
| 269 |
> |
* Deinitialize VOSF system |
| 270 |
> |
*/ |
| 271 |
> |
|
| 272 |
> |
static void video_vosf_exit(void) |
| 273 |
|
{ |
| 274 |
< |
D(bug("Screen_fault_handler: ADDR=0x%08X from IP=0x%08X\n", scs->regs->dar, scs->regs->nip)); |
| 275 |
< |
do_handle_screen_fault((uintptr)scs->regs->dar, (uintptr)scs->regs->nip); |
| 274 |
> |
if (mainBuffer.pageInfo) { |
| 275 |
> |
free(mainBuffer.pageInfo); |
| 276 |
> |
mainBuffer.pageInfo = NULL; |
| 277 |
> |
} |
| 278 |
> |
if (mainBuffer.dirtyPages) { |
| 279 |
> |
free(mainBuffer.dirtyPages); |
| 280 |
> |
mainBuffer.dirtyPages = NULL; |
| 281 |
> |
} |
| 282 |
|
} |
| 283 |
|
|
| 128 |
– |
# else |
| 129 |
– |
# error "No suitable subterfuge for Video on SEGV signals" |
| 130 |
– |
# endif |
| 131 |
– |
#else |
| 132 |
– |
# error "Can't do Video on SEGV signals" |
| 133 |
– |
#endif |
| 134 |
– |
|
| 284 |
|
|
| 285 |
|
/* |
| 286 |
< |
* Screen fault handler initialization |
| 286 |
> |
* Screen fault handler |
| 287 |
|
*/ |
| 288 |
|
|
| 289 |
< |
#if defined(HAVE_SIGINFO_T) |
| 141 |
< |
static bool Screen_fault_handler_init() |
| 289 |
> |
bool Screen_fault_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction) |
| 290 |
|
{ |
| 291 |
< |
// Setup SIGSEGV handler to process writes to frame buffer |
| 292 |
< |
sigemptyset(&vosf_sa.sa_mask); |
| 293 |
< |
vosf_sa.sa_sigaction = Screen_fault_handler; |
| 294 |
< |
vosf_sa.sa_flags = SA_SIGINFO; |
| 295 |
< |
return (sigaction(SIGSEGV, &vosf_sa, NULL) == 0); |
| 296 |
< |
} |
| 297 |
< |
#elif defined(HAVE_SIGCONTEXT_SUBTERFUGE) |
| 298 |
< |
static bool Screen_fault_handler_init() |
| 299 |
< |
{ |
| 300 |
< |
// Setup SIGSEGV handler to process writes to frame buffer |
| 301 |
< |
sigemptyset(&vosf_sa.sa_mask); |
| 302 |
< |
vosf_sa.sa_handler = (void (*)(int)) Screen_fault_handler; |
| 303 |
< |
#if !EMULATED_68K && defined(__NetBSD__) |
| 304 |
< |
sigaddset(&vosf_sa.sa_mask, SIGALRM); |
| 305 |
< |
vosf_sa.sa_flags = SA_ONSTACK; |
| 306 |
< |
#else |
| 307 |
< |
vosf_sa.sa_flags = 0; |
| 308 |
< |
#endif |
| 161 |
< |
return (sigaction(SIGSEGV, &vosf_sa, NULL) == 0); |
| 291 |
> |
const uintptr addr = (uintptr)fault_address; |
| 292 |
> |
|
| 293 |
> |
/* Someone attempted to write to the frame buffer. Make it writeable |
| 294 |
> |
* now so that the data could actually be written to. It will be made |
| 295 |
> |
* read-only back in one of the screen update_*() functions. |
| 296 |
> |
*/ |
| 297 |
> |
if (((uintptr)addr - mainBuffer.memStart) < mainBuffer.memLength) { |
| 298 |
> |
const int page = ((uintptr)addr - mainBuffer.memStart) >> mainBuffer.pageBits; |
| 299 |
> |
LOCK_VOSF; |
| 300 |
> |
PFLAG_SET(page); |
| 301 |
> |
vm_protect((char *)(addr & -mainBuffer.pageSize), mainBuffer.pageSize, VM_PAGE_READ | VM_PAGE_WRITE); |
| 302 |
> |
mainBuffer.dirty = true; |
| 303 |
> |
UNLOCK_VOSF; |
| 304 |
> |
return true; |
| 305 |
> |
} |
| 306 |
> |
|
| 307 |
> |
/* Otherwise, we don't know how to handle the fault, let it crash */ |
| 308 |
> |
return false; |
| 309 |
|
} |
| 163 |
– |
#endif |
| 310 |
|
|
| 311 |
|
|
| 312 |
|
/* |
| 315 |
|
|
| 316 |
|
// From video_blit.cpp |
| 317 |
|
extern void (*Screen_blit)(uint8 * dest, const uint8 * source, uint32 length); |
| 318 |
< |
extern bool Screen_blitter_init(XVisualInfo * visual_info, bool native_byte_order); |
| 318 |
> |
extern bool Screen_blitter_init(XVisualInfo * visual_info, bool native_byte_order, int mac_depth); |
| 319 |
> |
extern uint32 ExpandMap[256]; |
| 320 |
|
|
| 321 |
|
/* How can we deal with array overrun conditions ? |
| 322 |
|
|
| 351 |
|
than pageCount. |
| 352 |
|
*/ |
| 353 |
|
|
| 354 |
< |
static inline void update_display_window_vosf(void) |
| 354 |
> |
static inline void update_display_window_vosf(VIDEO_DRV_INIT) |
| 355 |
|
{ |
| 356 |
+ |
VIDEO_MODE_INIT; |
| 357 |
+ |
|
| 358 |
|
int page = 0; |
| 359 |
|
for (;;) { |
| 360 |
< |
const int first_page = find_next_page_set(page); |
| 360 |
> |
const unsigned first_page = find_next_page_set(page); |
| 361 |
|
if (first_page >= mainBuffer.pageCount) |
| 362 |
|
break; |
| 363 |
|
|
| 367 |
|
// Make the dirty pages read-only again |
| 368 |
|
const int32 offset = first_page << mainBuffer.pageBits; |
| 369 |
|
const uint32 length = (page - first_page) << mainBuffer.pageBits; |
| 370 |
< |
mprotect((caddr_t)(mainBuffer.memStart + offset), length, PROT_READ); |
| 370 |
> |
vm_protect((char *)mainBuffer.memStart + offset, length, VM_PAGE_READ); |
| 371 |
|
|
| 372 |
|
// There is at least one line to update |
| 373 |
|
const int y1 = mainBuffer.pageInfo[first_page].top; |
| 374 |
|
const int y2 = mainBuffer.pageInfo[page - 1].bottom; |
| 375 |
|
const int height = y2 - y1 + 1; |
| 376 |
|
|
| 377 |
< |
const int bytes_per_row = VideoMonitor.bytes_per_row; |
| 229 |
< |
const int bytes_per_pixel = VideoMonitor.bytes_per_row / VideoMonitor.x; |
| 230 |
< |
int i = y1 * bytes_per_row, j; |
| 231 |
< |
|
| 232 |
< |
if (depth == 1) { |
| 377 |
> |
if (VIDEO_MODE_DEPTH < VIDEO_DEPTH_8BIT) { |
| 378 |
|
|
| 379 |
|
// Update the_host_buffer and copy of the_buffer |
| 380 |
+ |
const int src_bytes_per_row = VIDEO_MODE_ROW_BYTES; |
| 381 |
+ |
const int dst_bytes_per_row = VIDEO_DRV_IMAGE->bytes_per_line; |
| 382 |
+ |
const int pixels_per_byte = VIDEO_MODE_X / src_bytes_per_row; |
| 383 |
+ |
int i1 = y1 * src_bytes_per_row, i2 = y1 * dst_bytes_per_row, j; |
| 384 |
|
for (j = y1; j <= y2; j++) { |
| 385 |
< |
Screen_blit(the_host_buffer + i, the_buffer + i, VideoMonitor.x >> 3); |
| 386 |
< |
i += bytes_per_row; |
| 385 |
> |
Screen_blit(the_host_buffer + i2, the_buffer + i1, VIDEO_MODE_X / pixels_per_byte); |
| 386 |
> |
i1 += src_bytes_per_row; |
| 387 |
> |
i2 += dst_bytes_per_row; |
| 388 |
|
} |
| 389 |
|
|
| 390 |
|
} else { |
| 391 |
|
|
| 392 |
|
// Update the_host_buffer and copy of the_buffer |
| 393 |
+ |
const int src_bytes_per_row = VIDEO_MODE_ROW_BYTES; |
| 394 |
+ |
const int dst_bytes_per_row = VIDEO_DRV_IMAGE->bytes_per_line; |
| 395 |
+ |
const int bytes_per_pixel = src_bytes_per_row / VIDEO_MODE_X; |
| 396 |
+ |
int i1 = y1 * src_bytes_per_row, i2 = y1 * dst_bytes_per_row, j; |
| 397 |
|
for (j = y1; j <= y2; j++) { |
| 398 |
< |
Screen_blit(the_host_buffer + i, the_buffer + i, bytes_per_pixel * VideoMonitor.x); |
| 399 |
< |
i += bytes_per_row; |
| 398 |
> |
Screen_blit(the_host_buffer + i2, the_buffer + i1, bytes_per_pixel * VIDEO_MODE_X); |
| 399 |
> |
i1 += src_bytes_per_row; |
| 400 |
> |
i2 += dst_bytes_per_row; |
| 401 |
|
} |
| 402 |
|
} |
| 403 |
|
|
| 404 |
< |
if (have_shm) |
| 405 |
< |
XShmPutImage(x_display, the_win, the_gc, img, 0, y1, 0, y1, VideoMonitor.x, height, 0); |
| 404 |
> |
if (VIDEO_DRV_HAVE_SHM) |
| 405 |
> |
XShmPutImage(x_display, VIDEO_DRV_WINDOW, VIDEO_DRV_GC, VIDEO_DRV_IMAGE, 0, y1, 0, y1, VIDEO_MODE_X, height, 0); |
| 406 |
|
else |
| 407 |
< |
XPutImage(x_display, the_win, the_gc, img, 0, y1, 0, y1, VideoMonitor.x, height); |
| 407 |
> |
XPutImage(x_display, VIDEO_DRV_WINDOW, VIDEO_DRV_GC, VIDEO_DRV_IMAGE, 0, y1, 0, y1, VIDEO_MODE_X, height); |
| 408 |
|
} |
| 254 |
– |
|
| 409 |
|
mainBuffer.dirty = false; |
| 410 |
|
} |
| 411 |
|
|
| 412 |
|
|
| 413 |
|
/* |
| 414 |
|
* Update display for DGA mode and VOSF |
| 415 |
< |
* (only in Direct Addressing mode) |
| 415 |
> |
* (only in Real or Direct Addressing mode) |
| 416 |
|
*/ |
| 417 |
|
|
| 418 |
|
#if REAL_ADDRESSING || DIRECT_ADDRESSING |
| 419 |
|
static inline void update_display_dga_vosf(void) |
| 420 |
|
{ |
| 421 |
+ |
VIDEO_MODE_INIT; |
| 422 |
+ |
|
| 423 |
|
int page = 0; |
| 424 |
|
for (;;) { |
| 425 |
< |
const int first_page = find_next_page_set(page); |
| 425 |
> |
const unsigned first_page = find_next_page_set(page); |
| 426 |
|
if (first_page >= mainBuffer.pageCount) |
| 427 |
|
break; |
| 428 |
|
|
| 432 |
|
// Make the dirty pages read-only again |
| 433 |
|
const int32 offset = first_page << mainBuffer.pageBits; |
| 434 |
|
const uint32 length = (page - first_page) << mainBuffer.pageBits; |
| 435 |
< |
mprotect((caddr_t)(mainBuffer.memStart + offset), length, PROT_READ); |
| 435 |
> |
vm_protect((char *)mainBuffer.memStart + offset, length, VM_PAGE_READ); |
| 436 |
|
|
| 437 |
|
// I am sure that y2 >= y1 and depth != 1 |
| 438 |
|
const int y1 = mainBuffer.pageInfo[first_page].top; |
| 439 |
|
const int y2 = mainBuffer.pageInfo[page - 1].bottom; |
| 440 |
|
|
| 441 |
< |
const int bytes_per_row = VideoMonitor.bytes_per_row; |
| 442 |
< |
const int bytes_per_pixel = VideoMonitor.bytes_per_row / VideoMonitor.x; |
| 441 |
> |
const int bytes_per_row = VIDEO_MODE_ROW_BYTES; |
| 442 |
> |
const int bytes_per_pixel = VIDEO_MODE_ROW_BYTES / VIDEO_MODE_X; |
| 443 |
|
int i, j; |
| 444 |
|
|
| 445 |
|
// Check for first column from left and first column |
| 446 |
|
// from right that have changed |
| 447 |
< |
int x1 = VideoMonitor.x * bytes_per_pixel - 1; |
| 447 |
> |
int x1 = VIDEO_MODE_X * bytes_per_pixel - 1; |
| 448 |
|
for (j = y1; j <= y2; j++) { |
| 449 |
|
uint8 * const p1 = &the_buffer[j * bytes_per_row]; |
| 450 |
|
uint8 * const p2 = &the_buffer_copy[j * bytes_per_row]; |
| 461 |
|
for (j = y2; j >= y1; j--) { |
| 462 |
|
uint8 * const p1 = &the_buffer[j * bytes_per_row]; |
| 463 |
|
uint8 * const p2 = &the_buffer_copy[j * bytes_per_row]; |
| 464 |
< |
for (i = VideoMonitor.x * bytes_per_pixel - 1; i > x2; i--) { |
| 464 |
> |
for (i = VIDEO_MODE_X * bytes_per_pixel - 1; i > x2; i--) { |
| 465 |
|
if (p1[i] != p2[i]) { |
| 466 |
|
x2 = i; |
| 467 |
|
break; |
