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source: kStuff/trunk/kHlp/Bare/kHlpSys-darwin.c@ 29

Last change on this file since 29 was 29, checked in by bird, 16 years ago

Finally got around execute the switch to the MIT license.
  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 10.3 KB
Line 
1/* $Id: kHlpSys-darwin.c 29 2009-07-01 20:30:29Z bird $ */
2/** @file
3 * kHlpBare -
4 */
5
6/*
7 * Copyright (c) 2006-2007 Knut St. Osmundsen <[email protected]>
8 *
9 * Permission is hereby granted, free of charge, to any person
10 * obtaining a copy of this software and associated documentation
11 * files (the "Software"), to deal in the Software without
12 * restriction, including without limitation the rights to use,
13 * copy, modify, merge, publish, distribute, sublicense, and/or sell
14 * copies of the Software, and to permit persons to whom the
15 * Software is furnished to do so, subject to the following
16 * conditions:
17 *
18 * The above copyright notice and this permission notice shall be
19 * included in all copies or substantial portions of the Software.
20 *
21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
23 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
25 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
26 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
27 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
28 * OTHER DEALINGS IN THE SOFTWARE.
29 */
30
31#include <k/kHlpSys.h>
32#include <unistd.h>
33#include <errno.h>
34#include <dlfcn.h>
35#include <sys/mman.h>
36#include <mach/mach_time.h>
37
38
39#define USE_DARWIN_SYSCALLS
40
41#if K_ARCH == K_ARCH_X86_32
42# define DARWIN_SYSCALL(name, code) \
43 asm("\
44 .text \n\
45 .globl _" #name " \n\
46 _" #name ": \n\
47 mov $ " #code ", %eax \n\
48 call 1f \n\
49 1: \n\
50 pop %edx \n\
51 mov %esp, %ecx \n\
52 sysenter \n\
53 jnae 2f \n\
54 ret \n\
55 2: \n\
56 neg %eax \n\
57 ret \n\
58 ")
59
60# define DARWIN_SYSCALL_RET64(name, code) \
61 asm("\
62 .text \n\
63 .globl _" #name " \n\
64 _" #name ": \n\
65 mov $ " #code ", %eax \n\
66 int $0x80 \n\
67 jnae 2f \n\
68 ret \n\
69 2: \n\
70 neg %eax \n\
71 mov $0xffffffff, %edx \n\
72 ret \n\
73 ")
74
75# define DARWIN_SYSCALL_NOERR(name, code) \
76 asm("\
77 .text \n\
78 .globl _" #name " \n\
79 _" #name ": \n\
80 mov $ " #code ", %eax \n\
81 call 1f \n\
82 1: \n\
83 pop %edx \n\
84 mov %esp, %ecx \n\
85 sysenter \n\
86 ret \n\
87 ")
88
89#elif K_ARCH == K_ARCH_AMD64
90# define DARWIN_SYSCALL(name, code) \
91 asm("\
92 .text \n\
93 .globl _" #name " \n\
94 _" #name ": \n\
95 mov $ " #code ", %eax \n\
96 mov %rcx, %r10 \n\
97 sysenter \n\
98 jnae 2f \n\
99 ret \n\
100 2: \n\
101 neg %eax \n\
102 movsx %eax, %rax \n\
103 ret \n\
104 ")
105
106# define DARWIN_SYSCALL_RET64(name, code) DARWIN_SYSCALL_RET(name, code)
107
108# define DARWIN_SYSCALL_NOERR(name, code) \
109 asm("\
110 .text \n\
111 .globl _" #name " \n\
112 _" #name ": \n\
113 mov $ " #code ", %eax \n\
114 mov %rcx, %r10 \n\
115 sysenter \n\
116 ret \n\
117 ")
118
119
120#else
121# error later...
122#endif
123
124
125#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
126DARWIN_SYSCALL(kHlpSys_readlink, 0x000c003a);
127#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
128DARWIN_SYSCALL(kHlpSys_readlink, 0x0200003a);
129#else
130KSSIZE kHlpSys_readlink(const char *pszPath, char *pszBuf, KSIZE cbBuf)
131{
132 KSSIZE cbRet = readlink(pszPath, pszBuf, cbBuf);
133 return cbRet >= 0 ? cbRet : -errno;
134}
135#endif
136
137
138#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
139DARWIN_SYSCALL(kHlpSys_open, 0x000c0005);
140#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
141DARWIN_SYSCALL(kHlpSys_open, 0x02000005);
142#else
143int kHlpSys_open(const char *filename, int flags, int mode)
144{
145 int fd = open(filename, flags, mode);
146 return fd >= 0 ? fd : -errno;
147}
148#endif
149
150
151#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
152DARWIN_SYSCALL(kHlpSys_close, 0x000c0006);
153#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
154DARWIN_SYSCALL(kHlpSys_close, 0x02000006);
155#else
156int kHlpSys_close(int fd)
157{
158 if (!close(fd))
159 return 0;
160 return -errno;
161}
162#endif
163
164
165#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
166DARWIN_SYSCALL_RET64(kHlpSys_lseek, 0x000000c7);
167#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
168DARWIN_SYSCALL_RET64(kHlpSys_lseek, 0x020000c7);
169#else
170KFOFF kHlpSys_lseek(int fd, int whench, KFOFF off)
171{
172 KFOFF offRet = lseek(fd, whench, off);
173 return offRet >= 0 ? offRet : -errno;
174}
175#endif
176
177
178#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
179DARWIN_SYSCALL(kHlpSys_read, 0x000c0003);
180#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
181DARWIN_SYSCALL(kHlpSys_read, 0x02000003);
182#else
183KSSIZE kHlpSys_read(int fd, void *pvBuf, KSIZE cbBuf)
184{
185 KSSIZE cbRead = read(fd, pvBuf, cbBuf);
186 return cbRead >= 0 ? cbRead : -errno;
187}
188#endif
189
190
191#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
192DARWIN_SYSCALL(kHlpSys_write, 0x000c0004);
193#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
194DARWIN_SYSCALL(kHlpSys_write, 0x02000004);
195#else
196KSSIZE kHlpSys_write(int fd, const void *pvBuf, KSIZE cbBuf)
197{
198 KSSIZE cbWritten = write(fd, pvBuf, cbBuf);
199 return cbWritten >= 0 ? cbWritten : -errno;
200}
201#endif
202
203
204#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
205DARWIN_SYSCALL(kHlpSys_mmap, 0x020000c5);
206#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
207DARWIN_SYSCALL(kHlpSys_mmap, 0x020000c5);
208#else
209void *kHlpSys_mmap(void *addr, KSIZE len, int prot, int flags, int fd, KI64 off)
210{
211 void *pv = mmap(addr, len, prot, flags, fd, off);
212 return pv != (void *)-1
213 ? pv
214 : errno < 256 ? (void *)(long)errno : (void *)(long)ENOMEM;
215}
216#endif
217
218
219#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
220DARWIN_SYSCALL(kHlpSys_mprotect, 0x000c004a);
221#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
222DARWIN_SYSCALL(kHlpSys_mprotect, 0x0200004a);
223#else
224int kHlpSys_mprotect(void *addr, KSIZE len, int prot)
225{
226 if (!mprotect(addr, len, prot))
227 return 0;
228 return -errno;
229}
230#endif
231
232
233#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
234DARWIN_SYSCALL(kHlpSys_munmap, 0x00080049);
235#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
236DARWIN_SYSCALL(kHlpSys_munmap, 0x02000049);
237#else
238int kHlpSys_munmap(void *addr, KSIZE len)
239{
240 if (!munmap(addr, len))
241 return 0;
242 return -errno;
243}
244#endif
245
246
247#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
248DARWIN_SYSCALL(kHlpSys_exit, 0x00040001);
249#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
250DARWIN_SYSCALL(kHlpSys_exit, 0x02000001);
251#else
252void kHlpSys_exit(int rc)
253{
254 _Exit(rc);
255}
256#endif
257
258
259/*
260 * Some other stuff we'll be needing - Move to an appropriate place?
261 */
262
263#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
264DARWIN_SYSCALL_NOERR(mach_task_self, 0xffffffe4);
265#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
266DARWIN_SYSCALL_NOERR(mach_task_self, 0xffffffe4);
267#endif
268
269//#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
270//DARWIN_SYSCALL(semaphore_create, 0x00040001);
271//#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
272//DARWIN_SYSCALL(semaphore_create, 0x02000001);
273//#endif
274#ifdef USE_DARWIN_SYSCALLS
275kern_return_t semaphore_create(task_t t, semaphore_t *ps, int p, int v)
276{
277 return 0;
278}
279#endif
280
281//#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
282//DARWIN_SYSCALL(semaphore_destroy, 0x00040001);
283//#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
284//DARWIN_SYSCALL(semaphore_destroy, 0x02000001);
285//#endif
286#ifdef USE_DARWIN_SYSCALLS
287kern_return_t semaphore_destroy(task_t t, semaphore_t s)
288{
289 return 0;
290}
291#endif
292
293
294#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
295DARWIN_SYSCALL(semaphore_wait, 0xffffffdc);
296#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
297DARWIN_SYSCALL(semaphore_wait, 0xffffffdc);
298#endif
299
300#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
301DARWIN_SYSCALL(semaphore_signal, 0xffffffdf);
302#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
303DARWIN_SYSCALL(semaphore_signal, 0xffffffdf);
304#endif
305
306#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
307DARWIN_SYSCALL(mach_wait_until, 0xffffffa6);
308#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
309DARWIN_SYSCALL(mach_wait_until, 0xffffffa6);
310#endif
311
312#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
313DARWIN_SYSCALL(mach_timebase_info, 0xffffffa7);
314#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
315DARWIN_SYSCALL(mach_timebase_info, 0xffffffa7);
316#endif
317
318#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
319asm("\n\
320.text \n\
321.globl _mach_absolute_time \n\
322_mach_absolute_time: \n\
323 mov $0xffff1700, %edx \n\
324 jmp *%edx\n"); /* common page stuff. */
325#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
326#endif
327
328
329void *dlopen(const char *pszModule, int fFlags)
330{
331 return NULL;
332}
333
334
335int dlclose(void *pvMod)
336{
337
338}
339
340
341void *dlsym(void *pvMod, const char *pszSymbol)
342{
343 return NULL;
344}
345
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