Files
mango/arch/x86_64/asm-offset.c

28 lines
611 B
C
Raw Normal View History

#include <socks/sched.h>
#include <socks/compiler.h>
//size_t THREAD_sp = offsetof(struct thread, tr_sp);
/* Use %a0 instead of %0 to prevent gcc from emitting a $ before the symbol value
in the generated assembly.
emitting
.set TASK_sp, $56
instead of
.set TASK_sp, 56
causes garbage symbols to be generated.
*/
#define DEFINE(sym, val) \
asm volatile("\n.global " #sym "\n.type " #sym ", @object" "\n.set " #sym ", %a0" : : "i" (val))
#define OFFSET(sym, str, mem) \
DEFINE(sym, offsetof(str, mem))
static void __used common(void)
{
OFFSET(THREAD_sp, struct thread, tr_sp);
}