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/*
* farcall.c
*/
#include <com32.h>
static inline uint32_t eflags(void)
{
//uint32_t v;
#if __SIZEOF_POINTER__ == 4
uint32_t v;
asm volatile("pushfl ; popl %0" : "=rm" (v));
#elif __SIZEOF_POINTER__ == 8
uint64_t v;
asm volatile("pushfq ; pop %0" : "=rm" (v));
#else
#error "Unable to build for to-be-defined architecture type"
#endif
return v;
}
void __farcall(uint16_t cs, uint16_t ip,
const com32sys_t * ireg, com32sys_t * oreg)
{
com32sys_t xreg = *ireg;
/* Enable interrupts if and only if they are enabled in the caller */
xreg.eflags.l = (xreg.eflags.l & ~EFLAGS_IF) | (eflags() & EFLAGS_IF);
__com32.cs_farcall((cs << 16) + ip, &xreg, oreg);
}
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