jyapayne/musl
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

use syscall_arg_t for arguments in public syscall() function

Browse source 
on x32, this change allows programs which use syscall() with pointers
or 64-bit values as arguments to work correctly, i.e. without
truncation or incorrect sign extension. on all other supported archs,
syscall_arg_t is defined as long, so this change is a no-op.
This commit is contained in:
Rich Felker 2014-03-18 17:08:15 -04:00
commit 5f95f965e9
1 changed files with 7 additions and 7 deletions
Download patch file Download diff file Expand all files Collapse all files

14
src/misc/syscall.c
View file

@ -6,14 +6,14 @@
long syscall(long n, ...) long syscall(long n, ...)
{ {
va_list ap; va_list ap;
long a,b,c,d,e,f; syscall_arg_t a,b,c,d,e,f;
va_start(ap, n); va_start(ap, n);
a=va_arg(ap, long); a=va_arg(ap, syscall_arg_t);
b=va_arg(ap, long); b=va_arg(ap, syscall_arg_t);
c=va_arg(ap, long); c=va_arg(ap, syscall_arg_t);
d=va_arg(ap, long); d=va_arg(ap, syscall_arg_t);
e=va_arg(ap, long); e=va_arg(ap, syscall_arg_t);
f=va_arg(ap, long); f=va_arg(ap, syscall_arg_t);
va_end(ap); va_end(ap);
return __syscall_ret(__syscall(n,a,b,c,d,e,f)); return __syscall_ret(__syscall(n,a,b,c,d,e,f));
} }