]>
git.proxmox.com Git - qemu.git/blob - hw/tcx.c
2 * QEMU Sun4m System Emulator
4 * Copyright (c) 2003-2004 Fabrice Bellard
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
30 #define XOFF (MAXX-XSZ)
31 #define YOFF (MAXY-YSZ)
33 typedef struct TCXState
{
41 void vga_update_display()
43 dpy_update(ts
->ds
, 0, 0, XSZ
, YSZ
);
46 void vga_invalidate_display() {}
48 static uint32_t tcx_mem_readb(void *opaque
, target_phys_addr_t addr
)
54 saddr
= addr
- s
->addr
- YOFF
*MAXX
- XOFF
;
57 if (x
< XSZ
&& y
< YSZ
) {
58 return s
->vram
[y
* XSZ
+ x
];
63 static uint32_t tcx_mem_readw(void *opaque
, target_phys_addr_t addr
)
66 #ifdef TARGET_WORDS_BIGENDIAN
67 v
= tcx_mem_readb(opaque
, addr
) << 8;
68 v
|= tcx_mem_readb(opaque
, addr
+ 1);
70 v
= tcx_mem_readb(opaque
, addr
);
71 v
|= tcx_mem_readb(opaque
, addr
+ 1) << 8;
76 static uint32_t tcx_mem_readl(void *opaque
, target_phys_addr_t addr
)
79 #ifdef TARGET_WORDS_BIGENDIAN
80 v
= tcx_mem_readb(opaque
, addr
) << 24;
81 v
|= tcx_mem_readb(opaque
, addr
+ 1) << 16;
82 v
|= tcx_mem_readb(opaque
, addr
+ 2) << 8;
83 v
|= tcx_mem_readb(opaque
, addr
+ 3);
85 v
= tcx_mem_readb(opaque
, addr
);
86 v
|= tcx_mem_readb(opaque
, addr
+ 1) << 8;
87 v
|= tcx_mem_readb(opaque
, addr
+ 2) << 16;
88 v
|= tcx_mem_readb(opaque
, addr
+ 3) << 24;
93 static void tcx_mem_writeb(void *opaque
, target_phys_addr_t addr
, uint32_t val
)
100 saddr
= addr
- s
->addr
- YOFF
*MAXX
- XOFF
;
102 x
= saddr
- y
* MAXX
;
103 if (x
< XSZ
&& y
< YSZ
) {
106 if (s
->ds
->depth
== 24 || s
->ds
->depth
== 32) {
107 /* XXX need to do CLUT translation */
108 sptr
[y
* s
->ds
->linesize
+ x
*4] = val
& 0xff;
109 sptr
[y
* s
->ds
->linesize
+ x
*4+1] = val
& 0xff;
110 sptr
[y
* s
->ds
->linesize
+ x
*4+2] = val
& 0xff;
112 else if (s
->ds
->depth
== 8) {
113 sptr
[y
* s
->ds
->linesize
+ x
] = val
& 0xff;
116 cpu_physical_memory_set_dirty(addr
);
117 s
->vram
[y
* XSZ
+ x
] = val
& 0xff;
121 static void tcx_mem_writew(void *opaque
, target_phys_addr_t addr
, uint32_t val
)
123 #ifdef TARGET_WORDS_BIGENDIAN
124 tcx_mem_writeb(opaque
, addr
, (val
>> 8) & 0xff);
125 tcx_mem_writeb(opaque
, addr
+ 1, val
& 0xff);
127 tcx_mem_writeb(opaque
, addr
, val
& 0xff);
128 tcx_mem_writeb(opaque
, addr
+ 1, (val
>> 8) & 0xff);
132 static void tcx_mem_writel(void *opaque
, target_phys_addr_t addr
, uint32_t val
)
134 #ifdef TARGET_WORDS_BIGENDIAN
135 tcx_mem_writeb(opaque
, addr
, (val
>> 24) & 0xff);
136 tcx_mem_writeb(opaque
, addr
+ 1, (val
>> 16) & 0xff);
137 tcx_mem_writeb(opaque
, addr
+ 2, (val
>> 8) & 0xff);
138 tcx_mem_writeb(opaque
, addr
+ 3, val
& 0xff);
140 tcx_mem_writeb(opaque
, addr
, val
& 0xff);
141 tcx_mem_writeb(opaque
, addr
+ 1, (val
>> 8) & 0xff);
142 tcx_mem_writeb(opaque
, addr
+ 2, (val
>> 16) & 0xff);
143 tcx_mem_writeb(opaque
, addr
+ 3, (val
>> 24) & 0xff);
147 static CPUReadMemoryFunc
*tcx_mem_read
[3] = {
153 static CPUWriteMemoryFunc
*tcx_mem_write
[3] = {
159 void tcx_init(DisplayState
*ds
, uint32_t addr
)
164 s
= qemu_mallocz(sizeof(TCXState
));
170 tcx_io_memory
= cpu_register_io_memory(0, tcx_mem_read
, tcx_mem_write
, s
);
171 cpu_register_physical_memory(addr
, 0x100000,
173 s
->vram
= qemu_mallocz(XSZ
*YSZ
);
174 dpy_resize(s
->ds
, XSZ
, YSZ
);
177 void vga_screen_dump(const char *filename
)
185 f
= fopen(filename
, "wb");
188 fprintf(f
, "P6\n%d %d\n%d\n",
191 for(y
= 0; y
< YSZ
; y
++) {
193 for(x
= 0; x
< XSZ
; x
++) {
195 fputc((v
) & 0xff, f
);
196 fputc((v
) & 0xff, f
);
197 fputc((v
) & 0xff, f
);