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/* $Id: kHlpSys-darwin.c 29 2009-07-01 20:30:29Z bird $ */
/** @file
* kHlpBare -
*/
/*
* Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#include <k/kHlpSys.h>
#include <unistd.h>
#include <errno.h>
#include <dlfcn.h>
#include <sys/mman.h>
#include <mach/mach_time.h>
#define USE_DARWIN_SYSCALLS
#if K_ARCH == K_ARCH_X86_32
# define DARWIN_SYSCALL(name, code) \
asm("\
.text \n\
.globl _" #name " \n\
_" #name ": \n\
mov $ " #code ", %eax \n\
call 1f \n\
1: \n\
pop %edx \n\
mov %esp, %ecx \n\
sysenter \n\
jnae 2f \n\
ret \n\
2: \n\
neg %eax \n\
ret \n\
")
# define DARWIN_SYSCALL_RET64(name, code) \
asm("\
.text \n\
.globl _" #name " \n\
_" #name ": \n\
mov $ " #code ", %eax \n\
int $0x80 \n\
jnae 2f \n\
ret \n\
2: \n\
neg %eax \n\
mov $0xffffffff, %edx \n\
ret \n\
")
# define DARWIN_SYSCALL_NOERR(name, code) \
asm("\
.text \n\
.globl _" #name " \n\
_" #name ": \n\
mov $ " #code ", %eax \n\
call 1f \n\
1: \n\
pop %edx \n\
mov %esp, %ecx \n\
sysenter \n\
ret \n\
")
#elif K_ARCH == K_ARCH_AMD64
# define DARWIN_SYSCALL(name, code) \
asm("\
.text \n\
.globl _" #name " \n\
_" #name ": \n\
mov $ " #code ", %eax \n\
mov %rcx, %r10 \n\
sysenter \n\
jnae 2f \n\
ret \n\
2: \n\
neg %eax \n\
movsx %eax, %rax \n\
ret \n\
")
# define DARWIN_SYSCALL_RET64(name, code) DARWIN_SYSCALL_RET(name, code)
# define DARWIN_SYSCALL_NOERR(name, code) \
asm("\
.text \n\
.globl _" #name " \n\
_" #name ": \n\
mov $ " #code ", %eax \n\
mov %rcx, %r10 \n\
sysenter \n\
ret \n\
")
#else
# error later...
#endif
#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
DARWIN_SYSCALL(kHlpSys_readlink, 0x000c003a);
#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
DARWIN_SYSCALL(kHlpSys_readlink, 0x0200003a);
#else
KSSIZE kHlpSys_readlink(const char *pszPath, char *pszBuf, KSIZE cbBuf)
{
KSSIZE cbRet = readlink(pszPath, pszBuf, cbBuf);
return cbRet >= 0 ? cbRet : -errno;
}
#endif
#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
DARWIN_SYSCALL(kHlpSys_open, 0x000c0005);
#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
DARWIN_SYSCALL(kHlpSys_open, 0x02000005);
#else
int kHlpSys_open(const char *filename, int flags, int mode)
{
int fd = open(filename, flags, mode);
return fd >= 0 ? fd : -errno;
}
#endif
#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
DARWIN_SYSCALL(kHlpSys_close, 0x000c0006);
#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
DARWIN_SYSCALL(kHlpSys_close, 0x02000006);
#else
int kHlpSys_close(int fd)
{
if (!close(fd))
return 0;
return -errno;
}
#endif
#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
DARWIN_SYSCALL_RET64(kHlpSys_lseek, 0x000000c7);
#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
DARWIN_SYSCALL_RET64(kHlpSys_lseek, 0x020000c7);
#else
KFOFF kHlpSys_lseek(int fd, int whench, KFOFF off)
{
KFOFF offRet = lseek(fd, whench, off);
return offRet >= 0 ? offRet : -errno;
}
#endif
#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
DARWIN_SYSCALL(kHlpSys_read, 0x000c0003);
#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
DARWIN_SYSCALL(kHlpSys_read, 0x02000003);
#else
KSSIZE kHlpSys_read(int fd, void *pvBuf, KSIZE cbBuf)
{
KSSIZE cbRead = read(fd, pvBuf, cbBuf);
return cbRead >= 0 ? cbRead : -errno;
}
#endif
#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
DARWIN_SYSCALL(kHlpSys_write, 0x000c0004);
#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
DARWIN_SYSCALL(kHlpSys_write, 0x02000004);
#else
KSSIZE kHlpSys_write(int fd, const void *pvBuf, KSIZE cbBuf)
{
KSSIZE cbWritten = write(fd, pvBuf, cbBuf);
return cbWritten >= 0 ? cbWritten : -errno;
}
#endif
#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
DARWIN_SYSCALL(kHlpSys_mmap, 0x020000c5);
#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
DARWIN_SYSCALL(kHlpSys_mmap, 0x020000c5);
#else
void *kHlpSys_mmap(void *addr, KSIZE len, int prot, int flags, int fd, KI64 off)
{
void *pv = mmap(addr, len, prot, flags, fd, off);
return pv != (void *)-1
? pv
: errno < 256 ? (void *)(long)errno : (void *)(long)ENOMEM;
}
#endif
#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
DARWIN_SYSCALL(kHlpSys_mprotect, 0x000c004a);
#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
DARWIN_SYSCALL(kHlpSys_mprotect, 0x0200004a);
#else
int kHlpSys_mprotect(void *addr, KSIZE len, int prot)
{
if (!mprotect(addr, len, prot))
return 0;
return -errno;
}
#endif
#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
DARWIN_SYSCALL(kHlpSys_munmap, 0x00080049);
#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
DARWIN_SYSCALL(kHlpSys_munmap, 0x02000049);
#else
int kHlpSys_munmap(void *addr, KSIZE len)
{
if (!munmap(addr, len))
return 0;
return -errno;
}
#endif
#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
DARWIN_SYSCALL(kHlpSys_exit, 0x00040001);
#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
DARWIN_SYSCALL(kHlpSys_exit, 0x02000001);
#else
void kHlpSys_exit(int rc)
{
_Exit(rc);
}
#endif
/*
* Some other stuff we'll be needing - Move to an appropriate place?
*/
#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
DARWIN_SYSCALL_NOERR(mach_task_self, 0xffffffe4);
#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
DARWIN_SYSCALL_NOERR(mach_task_self, 0xffffffe4);
#endif
//#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
//DARWIN_SYSCALL(semaphore_create, 0x00040001);
//#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
//DARWIN_SYSCALL(semaphore_create, 0x02000001);
//#endif
#ifdef USE_DARWIN_SYSCALLS
kern_return_t semaphore_create(task_t t, semaphore_t *ps, int p, int v)
{
return 0;
}
#endif
//#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
//DARWIN_SYSCALL(semaphore_destroy, 0x00040001);
//#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
//DARWIN_SYSCALL(semaphore_destroy, 0x02000001);
//#endif
#ifdef USE_DARWIN_SYSCALLS
kern_return_t semaphore_destroy(task_t t, semaphore_t s)
{
return 0;
}
#endif
#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
DARWIN_SYSCALL(semaphore_wait, 0xffffffdc);
#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
DARWIN_SYSCALL(semaphore_wait, 0xffffffdc);
#endif
#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
DARWIN_SYSCALL(semaphore_signal, 0xffffffdf);
#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
DARWIN_SYSCALL(semaphore_signal, 0xffffffdf);
#endif
#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
DARWIN_SYSCALL(mach_wait_until, 0xffffffa6);
#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
DARWIN_SYSCALL(mach_wait_until, 0xffffffa6);
#endif
#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
DARWIN_SYSCALL(mach_timebase_info, 0xffffffa7);
#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
DARWIN_SYSCALL(mach_timebase_info, 0xffffffa7);
#endif
#if K_ARCH == K_ARCH_X86_32 && defined(USE_DARWIN_SYSCALLS)
asm("\n\
.text \n\
.globl _mach_absolute_time \n\
_mach_absolute_time: \n\
mov $0xffff1700, %edx \n\
jmp *%edx\n"); /* common page stuff. */
#elif K_ARCH == K_ARCH_AMD64 && defined(USE_DARWIN_SYSCALLS)
#endif
void *dlopen(const char *pszModule, int fFlags)
{
return NULL;
}
int dlclose(void *pvMod)
{
}
void *dlsym(void *pvMod, const char *pszSymbol)
{
return NULL;
}
|
