Mercurial > repos > blastem

annotate backend.c @ 558:dc9f178085a0

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Use a typedef code_ptr in place of uint8_t * in 68K core to better support host instruction sets with different instruction word sizes. Make x86_68k_options contain a cpu_options so that gen_mem_fun can eventually be shared with the Z80 core.
author Mike Pavone <pavone@retrodev.com>
date Mon, 24 Feb 2014 01:30:16 -0800
parents acec5464fa1e
children a18e3923481e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
467
140af5509ce7 Added copyright notice to source files and added GPL license text in COPYING
Mike Pavone <pavone@retrodev.com>
parents: 282
diff changeset
1 /*
140af5509ce7 Added copyright notice to source files and added GPL license text in COPYING
Mike Pavone <pavone@retrodev.com>
parents: 282
diff changeset
2 Copyright 2013 Michael Pavone
557
acec5464fa1e Rename x86_backend.h and x86_backend.c to backend.h and backend.c respectively
Mike Pavone <pavone@retrodev.com>
parents: 467
diff changeset
3 This file is part of BlastEm.
467
140af5509ce7 Added copyright notice to source files and added GPL license text in COPYING
Mike Pavone <pavone@retrodev.com>
parents: 282
diff changeset
4 BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text.
140af5509ce7 Added copyright notice to source files and added GPL license text in COPYING
Mike Pavone <pavone@retrodev.com>
parents: 282
diff changeset
5 */
557
acec5464fa1e Rename x86_backend.h and x86_backend.c to backend.h and backend.c respectively
Mike Pavone <pavone@retrodev.com>
parents: 467
diff changeset
6 #include "backend.h"
235
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
7 #include <stdlib.h>
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
8
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
9 deferred_addr * defer_address(deferred_addr * old_head, uint32_t address, uint8_t *dest)
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
10 {
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
11 deferred_addr * new_head = malloc(sizeof(deferred_addr));
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
12 new_head->next = old_head;
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
13 new_head->address = address & 0xFFFFFF;
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
14 new_head->dest = dest;
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
15 return new_head;
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
16 }
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
17
282
7b8a49220e3b Remove deferred address entries from abandoned translations inside z80_retrans_inst
Mike Pavone <pavone@retrodev.com>
parents: 235
diff changeset
18 void remove_deferred_until(deferred_addr **head_ptr, deferred_addr * remove_to)
7b8a49220e3b Remove deferred address entries from abandoned translations inside z80_retrans_inst
Mike Pavone <pavone@retrodev.com>
parents: 235
diff changeset
19 {
7b8a49220e3b Remove deferred address entries from abandoned translations inside z80_retrans_inst
Mike Pavone <pavone@retrodev.com>
parents: 235
diff changeset
20 for(deferred_addr *cur = *head_ptr; cur && cur != remove_to; cur = *head_ptr)
7b8a49220e3b Remove deferred address entries from abandoned translations inside z80_retrans_inst
Mike Pavone <pavone@retrodev.com>
parents: 235
diff changeset
21 {
7b8a49220e3b Remove deferred address entries from abandoned translations inside z80_retrans_inst
Mike Pavone <pavone@retrodev.com>
parents: 235
diff changeset
22 *head_ptr = cur->next;
7b8a49220e3b Remove deferred address entries from abandoned translations inside z80_retrans_inst
Mike Pavone <pavone@retrodev.com>
parents: 235
diff changeset
23 free(cur);
7b8a49220e3b Remove deferred address entries from abandoned translations inside z80_retrans_inst
Mike Pavone <pavone@retrodev.com>
parents: 235
diff changeset
24 }
7b8a49220e3b Remove deferred address entries from abandoned translations inside z80_retrans_inst
Mike Pavone <pavone@retrodev.com>
parents: 235
diff changeset
25 }
7b8a49220e3b Remove deferred address entries from abandoned translations inside z80_retrans_inst
Mike Pavone <pavone@retrodev.com>
parents: 235
diff changeset
26
235
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
27 void process_deferred(deferred_addr ** head_ptr, void * context, native_addr_func get_native)
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
28 {
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
29 deferred_addr * cur = *head_ptr;
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
30 deferred_addr **last_next = head_ptr;
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
31 while(cur)
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
32 {
558
dc9f178085a0 Use a typedef code_ptr in place of uint8_t * in 68K core to better support host instruction sets with different instruction word sizes. Make x86_68k_options contain a cpu_options so that gen_mem_fun can eventually be shared with the Z80 core.
Mike Pavone <pavone@retrodev.com>
parents: 557
diff changeset
33 code_ptr native = get_native(context, cur->address);//get_native_address(opts->native_code_map, cur->address);
235
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
34 if (native) {
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
35 int32_t disp = native - (cur->dest + 4);
558
dc9f178085a0 Use a typedef code_ptr in place of uint8_t * in 68K core to better support host instruction sets with different instruction word sizes. Make x86_68k_options contain a cpu_options so that gen_mem_fun can eventually be shared with the Z80 core.
Mike Pavone <pavone@retrodev.com>
parents: 557
diff changeset
36 code_ptr out = cur->dest;
235
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
37 *(out++) = disp;
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
38 disp >>= 8;
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
39 *(out++) = disp;
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
40 disp >>= 8;
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
41 *(out++) = disp;
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
42 disp >>= 8;
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
43 *out = disp;
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
44 *last_next = cur->next;
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
45 free(cur);
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
46 cur = *last_next;
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
47 } else {
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
48 last_next = &(cur->next);
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
49 cur = cur->next;
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
50 }
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
51 }
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
52 }
d9bf8e61c33c Get Z80 core working for simple programs
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
53