Support compiling with -fPIC for people who somehow think this is a

loader/preloader.c

@@ -173,28 +173,32 @@ __ASM_GLOBAL_FUNC(_start,
 static inline __attribute__((noreturn)) void wld_exit( int code )
 {
     for (;;)  /* avoid warning */
-        __asm__ __volatile__( "int $0x80" : : "a" (SYS_exit), "b" (code) );
+        __asm__ __volatile__( "pushl %%ebx; movl %1,%%ebx; int $0x80; popl %%ebx"
+                              : : "a" (SYS_exit), "g" (code) );
 }
 
 static inline int wld_open( const char *name, int flags )
 {
     int ret;
-    __asm__ __volatile__( "int $0x80" : "=a" (ret) : "0" (SYS_open), "b" (name), "c" (flags) );
+    __asm__ __volatile__( "pushl %%ebx; movl %2,%%ebx; int $0x80; popl %%ebx"
+                          : "=a" (ret) : "0" (SYS_open), "g" (name), "c" (flags) );
     return SYSCALL_RET(ret);
 }
 
 static inline int wld_close( int fd )
 {
     int ret;
-    __asm__ __volatile__( "int $0x80" : "=a" (ret) : "0" (SYS_close), "b" (fd) );
+    __asm__ __volatile__( "pushl %%ebx; movl %2,%%ebx; int $0x80; popl %%ebx"
+                          : "=a" (ret) : "0" (SYS_close), "g" (fd) );
     return SYSCALL_RET(ret);
 }
 
 static inline ssize_t wld_read( int fd, void *buffer, size_t len )
 {
     int ret;
-    __asm__ __volatile__( "int $0x80" : "=a" (ret)
-                          : "0" (SYS_read), "b" (fd), "c" (buffer), "d" (len)
+    __asm__ __volatile__( "pushl %%ebx; movl %2,%%ebx; int $0x80; popl %%ebx"
+                          : "=a" (ret)
+                          : "0" (SYS_read), "g" (fd), "c" (buffer), "d" (len)
                           : "memory" );
     return SYSCALL_RET(ret);
 }
@@ -202,15 +206,16 @@ static inline ssize_t wld_read( int fd, void *buffer, size_t len )
 static inline ssize_t wld_write( int fd, const void *buffer, size_t len )
 {
     int ret;
-    __asm__ __volatile__( "int $0x80" : "=a" (ret)
-                          : "0" (SYS_write), "b" (fd), "c" (buffer), "d" (len) );
+    __asm__ __volatile__( "pushl %%ebx; movl %2,%%ebx; int $0x80; popl %%ebx"
+                          : "=a" (ret) : "0" (SYS_write), "g" (fd), "c" (buffer), "d" (len) );
     return SYSCALL_RET(ret);
 }
 
 static inline int wld_mprotect( const void *addr, size_t len, int prot )
 {
     int ret;
-    __asm__ __volatile__( "int $0x80" : "=a" (ret) : "0" (SYS_mprotect), "b" (addr), "c" (len), "d" (prot) );
+    __asm__ __volatile__( "pushl %%ebx; movl %2,%%ebx; int $0x80; popl %%ebx"
+                          : "=a" (ret) : "0" (SYS_mprotect), "g" (addr), "c" (len), "d" (prot) );
     return SYSCALL_RET(ret);
 }
 
@@ -234,7 +239,8 @@ static void *wld_mmap( void *start, size_t len, int prot, int flags, int fd, off
     args.flags  = flags;
     args.fd     = fd;
     args.offset = offset;
-    __asm__ __volatile__( "int $0x80" : "=a" (ret) : "0" (SYS_mmap), "b" (&args) : "memory" );
+    __asm__ __volatile__( "pushl %%ebx; movl %2,%%ebx; int $0x80; popl %%ebx"
+                          : "=a" (ret) : "0" (SYS_mmap), "g" (&args) : "memory" );
     return (void *)SYSCALL_RET(ret);
 }