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#ifndef __RTL_I386_CONSTANTS_H__
#define __RTL_I386_CONSTANTS_H__
#include <linux/config.h>
#define MACHDEPREGS struct pt_regs
typedef void intercept_t; /*intercept returns nothing */
#define MACHDEPREGS_PTR(x) (&x)
#define POS_TO_BIT(x) (1UL << x)
#define ARCH_DEFINED_DISABLE 0
#define ARCH_DEFINED_ENABLE 0x200
#define IRQ_MAX_COUNT 256
#ifdef CONFIG_X86_IO_APIC
#define __LOCAL_IRQS__
#endif
#include <linux/smp.h>
#ifdef CONFIG_SMP
#define rtl_getcpuid() hw_smp_processor_id()
#else
#define rtl_getcpuid() smp_processor_id()
#endif
/* TODO in rtl_intercept and rtl_local intercept there is no
need to have 3 copies of restore_all. The code should
simply goto a single block.
Also the ret_from _intr should be used in rtl_intercept as well.
No need to do the stupid return. And this address should be patched
into the code instead of being indirect jumped
*/
#define RESTORE_ALL\
"popl %%ebx;\n\t" \
"popl %%ecx;\n\t" \
"popl %%edx;\n\t" \
"popl %%esi;\n\t" \
"popl %%edi;\n\t" \
"popl %%ebp;\n\t" \
"popl %%eax;\n\t" \
"1: popl %%ds;\n\t "\
"2: popl %%es;\n\t "\
"addl $4,%%esp;\n\t" \
"3: iret;\n\t "
/* on an intercept, the linux return goes via ret_from_irq
but the RTLinux return just irets
*/
#define RETURN_FROM_INTERRUPT_LINUX return
#define RETURN_FROM_INTERRUPT \
{ int i = (int)®s;\
__asm__ __volatile__("movl %0,%%esp\n\t" \
RESTORE_ALL : /* no output */ :"c" (i):"memory"); }
#define RETURN_FROM_LOCAL RETURN_FROM_INTERRUPT
#define RETURN_FROM_LOCAL_LINUX \
{ int i = (int)®s;\
__asm__ __volatile__("movl %0,%%esp\n\t"\
"jmp *local_ret_from_intr" \
: /* no output */ :"c" (i):"memory"); }
/* the PND numbers are between 0 and 31 and are used
in a bitmap of local interrupts */
#define VECTOR_TO_LOCAL_PND_GET(r) VECTOR_TO_LOCAL_PND(r.orig_eax)
#define VECTOR_TO_LOCAL_PND(x) (((x) - 0xe8))
#define MACHDEPREGS_TO_PND(x) VECTOR_TO_LOCAL_PND(x.orig_eax)
#define LOCAL_PND_TO_VECTOR(x) (((x) + 0xe8))
#define RTL_RESCHEDULE_VECTOR 0xEE
/* the intercept function returns 1 if the trap is intercepted;
* 0 means need to go through Linux code */
extern int rtl_request_traps(int (*rtl_exception_intercept)(int vector, struct pt_regs *regs, int error_code));
#endif /* __RTL_I386_CONSTANTS_H__ */
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