kolibrios-fun/contrib/sdk/sources/newlib/libc/sys/ioread.c
CleverMouse 8d57a1a87d newlib: don't report EOF as error from OS layer, higher layer detects EOF as zero-length read
git-svn-id: svn://kolibrios.org@5204 a494cfbc-eb01-0410-851d-a64ba20cac60
2014-12-01 11:19:01 +00:00

32 lines
729 B
C

#include <sys/types.h>
#include <sys/kos_io.h>
int read_file(const char *path, void *buff,
size_t offset, size_t count, size_t *reads)
{
int retval;
int d0;
__asm__ __volatile__(
"pushl $0 \n\t"
"pushl $0 \n\t"
"movl %%eax, 1(%%esp) \n\t"
"pushl %%ebx \n\t"
"pushl %%edx \n\t"
"pushl $0 \n\t"
"pushl %%ecx \n\t"
"pushl $0 \n\t"
"movl %%esp, %%ebx \n\t"
"mov $70, %%eax \n\t"
"int $0x40 \n\t"
"testl %%esi, %%esi \n\t"
"jz 1f \n\t"
"movl %%ebx, (%%esi) \n\t"
"1:"
"addl $28, %%esp \n\t"
:"=a" (retval)
:"a"(path),"b"(buff),"c"(offset),"d"(count),"S"(reads));
return retval == 6 ? 0 : retval;
};