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l4ka-hazelnut/apps/include/l4/x86/syscalls.h

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/**********************************************************************
* (c) 1999, 2000 by University of Karlsruhe and Dresden University
*
* filename: syscalls.h
*
*/
#ifndef __L4_X86_SYSCALLS_H__
#define __L4_X86_SYSCALLS_H__
#define L4_FP_REMAP_PAGE 0x00 /* Page is set to read only */
#define L4_FP_FLUSH_PAGE 0x02 /* Page is flushed completly */
#define L4_FP_OTHER_SPACES 0x00 /* Page is flushed in all other */
/* address spaces */
#define L4_FP_ALL_SPACES 0x80000000U
/* Page is flushed in own address */
/* space too */
#define L4_NC_SAME_CLAN 0x00 /* destination resides within the */
/* same clan */
#define L4_NC_INNER_CLAN 0x0C /* destination is in an inner clan */
#define L4_NC_OUTER_CLAN 0x04 /* destination is outside the */
/* invoker's clan */
#define L4_CT_LIMITED_IO 0
#define L4_CT_UNLIMITED_IO 1
#define L4_CT_DI_FORBIDDEN 0
#define L4_CT_DI_ALLOWED 1
/*
* prototypes
*/
L4_INLINE void
l4_fpage_unmap(l4_fpage_t fpage, dword_t map_mask);
L4_INLINE l4_threadid_t
l4_myself(void);
L4_INLINE int
l4_nchief(l4_threadid_t destination, l4_threadid_t *next_chief);
L4_INLINE void
l4_thread_ex_regs(l4_threadid_t destination, dword_t eip, dword_t esp,
l4_threadid_t *preempter, l4_threadid_t *pager,
dword_t *old_eflags, dword_t *old_eip, dword_t *old_esp);
L4_INLINE void
l4_thread_switch(l4_threadid_t destination);
L4_INLINE cpu_time_t
l4_thread_schedule(l4_threadid_t dest, l4_sched_param_t param,
l4_threadid_t *ext_preempter, l4_threadid_t *partner,
l4_sched_param_t *old_param);
L4_INLINE l4_taskid_t
l4_task_new(l4_taskid_t destination, dword_t mcp_or_new_chief,
dword_t esp, dword_t eip, l4_threadid_t pager);
L4_INLINE void
l4_yield (void);
/*
* Implementation
*/
/*
* L4 flex page unmap
*/
L4_INLINE void
l4_fpage_unmap(l4_fpage_t fpage, dword_t map_mask)
{
__asm__
__volatile__ (
#ifdef __pic__
"pushl %%ebx \n\t"
#endif
"pushl %%ebp \n\t" /* save ebp, no memory
references ("m") after
this point */
"int $0x32 \n\t"
"popl %%ebp \n\t" /* restore ebp, no memory
references ("m") before
this point */
#ifdef __pic__
"popl %%ebx \n\t"
#endif
:
"=a" (fpage),
"=c" (map_mask)
:
"a" (fpage),
"c" (map_mask)
:
#ifndef __pic__
"ebx",
#endif
"edx", "edi", "esi"
);
}
/*
* L4 id myself
*/
// ok
L4_INLINE l4_threadid_t
l4_myself(void)
{
l4_threadid_t temp_id;
__asm__
__volatile__ (
#ifdef __pic__
"pushl %%ebx \n\t"
#endif
"pushl %%ebp \n\t" /* save ebp, no memory
references ("m") after
this point */
"int $0x31 \n\t"
"popl %%ebp \n\t" /* restore ebp, no memory
references ("m") before
this point */
#ifdef __pic__
"popl %%ebx \n\t"
#endif
:
"=S" (temp_id.raw) /* ESI, 0 */
:
"0" (0) /* ESI, nil id (id.low = 0) */
:
#ifndef __pic__
"ebx",
#endif
"eax", "ecx", "edx", "edi"
);
return temp_id;
}
/*
* L4 id next chief
*/
// ok
L4_INLINE int
l4_nchief(l4_threadid_t destination, l4_threadid_t *next_chief)
{
int type;
__asm__(
#ifdef __pic__
"pushl %%ebx \n\t"
#endif
"pushl %%ebp \n\t" /* save ebp, no memory
references ("m") after
this point */
"int $0x31 \n\t"
"popl %%ebp \n\t" /* restore ebp, no memory
references ("m") before
this point */
#ifdef __pic__
"popl %%ebx \n\t"
#endif
:
"=S" (next_chief->raw), /* ESI, 0 */
"=a" (type) /* EAX, 2 */
:
"0" (destination.raw) /* ESI */
:
#ifndef __pic__
"ebx",
#endif
"ecx", "edx"
);
return type;
}
/*
* L4 lthread_ex_regs
*/
// ok
L4_INLINE void
l4_thread_ex_regs(l4_threadid_t destination, dword_t eip, dword_t esp,
l4_threadid_t *preempter, l4_threadid_t *pager,
dword_t *old_eflags, dword_t *old_eip, dword_t *old_esp)
{
__asm__ __volatile__(
"pushl %%ebx \n\t"
#ifdef __pic__
"movl %%edi, %%ebx \n\t"
#endif
"pushl %%ebp \n\t" /* save ebp, no memory
references ("m") after
this point */
"int $0x35 \n\t" /* execute system call */
"popl %%ebp \n\t" /* restore ebp, no memory
references ("m") before
this point */
"popl %%ebx \n\t"
:
"=a" (*old_eflags), /* EAX, 0 */
"=c" (*old_esp), /* ECX, 1 */
"=d" (*old_eip), /* EDX, 2 */
"=S" (pager->raw), /* ESI, 3 */
"=b" (preempter->raw) /* EBX, 4 */
:
"0" (destination.id.thread),
"1" (esp),
"2" (eip),
"3" (pager->raw), /* ESI */
#ifdef __pic__
"D" (preempter->raw) /* EDI */
#else
"b" (preempter->raw) /* EBX, 5 */
#endif
#ifndef __pic__
:
"edi"
#endif
);
}
/*
* L4 thread switch
*/
// ok
L4_INLINE void
l4_thread_switch(l4_threadid_t destination)
{
__asm__
__volatile__(
#ifdef __pic__
"pushl %%ebx \n\t"
#endif
"pushl %%ebp \n\t" /* save ebp, no memory
references ("m") after
this point */
"int $0x33 \n\t"
"popl %%ebp \n\t" /* restore ebp, no memory
references ("m") before
this point */
#ifdef __pic__
"popl %%ebx \n\t"
#endif
:
"=S" (destination.raw)
:
"S" (destination.raw)
:
#ifndef __pic__
"ebx",
#endif
"eax", "ecx", "edx", "edi"
);
}
/*
* L4 thread schedule
*/
// ok
L4_INLINE cpu_time_t
l4_thread_schedule(l4_threadid_t dest, l4_sched_param_t param,
l4_threadid_t *ext_preempter, l4_threadid_t *partner,
l4_sched_param_t *old_param)
{
cpu_time_t temp;
__asm__
__volatile__(
#ifdef __pic__
"pushl %%ebx \n\t"
"movl %%edi, %%ebx \n\t"
#endif
"pushl %%ebp \n\t" /* save ebp, no memory
references ("m") after
this point */
/* asm_enter_kdebug("before calling thread_schedule") */
"int $0x34 \n\t"
/* asm_enter_kdebug("after calling thread_schedule") */
"popl %%ebp \n\t" /* restore ebp, no memory
references ("m") before
this point */
#ifdef __pic__
"movl %%ebx, %%edi \n\t"
"popl %%ebx \n\t"
#endif
:
"=a" (*old_param), /* EAX, 0 */
"=c" (((dword_t*)&temp)[0]), /* ECX, 1 */
"=d" (((dword_t*)&temp)[1]), /* EDX, 2 */
"=S" (partner->raw), /* ESI, 3 */
#ifdef __pic__
"=D" (ext_preempter->raw) /* EDI, 4 */
#else
"=b" (ext_preempter->raw)
#endif
:
#ifdef __pic__
"2" (ext_preempter->raw), /* EDX, 2 */
#else
"b" (ext_preempter->raw), /* EBX, 5 */
#endif
"0" (param), /* EAX */
"3" (dest.raw) /* ESI */
#ifndef __pic__
: "edi"
#endif
);
return temp;
}
/*
* L4 task new
*/
// ok
#ifndef __pic__
L4_INLINE l4_taskid_t
l4_task_new(l4_taskid_t destination, dword_t mcp_or_new_chief,
dword_t esp, dword_t eip, l4_threadid_t pager)
{
l4_taskid_t temp_id;
__asm__
__volatile__(
"pushl %%ebp \n\t" /* save ebp, no memory
references ("m") after
this point */
"int $0x36 \n\t"
"popl %%ebp \n\t" /* restore ebp, no memory
references ("m") before
this point */
:
"=S" (temp_id.raw), /* ESI, 0 */
"=a"(esp), "=b"(esp), "=c"(esp), "=d"(esp)
:
"b" (pager.raw), /* EBX, 2 */
"a" (mcp_or_new_chief), /* EAX, 3 */
"c" (esp), /* ECX, 4 */
"d" (eip), /* EDX, 5 */
"0" (destination.raw) /* ESI */
:
"edi"
);
return temp_id;
}
#else /* __pic__ */
L4_INLINE l4_taskid_t
l4_task_new(l4_taskid_t destination, dword_t mcp_or_new_chief,
dword_t esp, dword_t eip, l4_threadid_t pager)
{
l4_taskid_t temp_id;
__asm__
__volatile__(
"pushl %%ebx \n\t"
"pushl %%ebp \n\t" /* save ebp, no memory
references ("m") after
this point */
"movl %%edi, %%ebx \n\t"
"int $0x36 \n\t"
"popl %%ebp \n\t" /* restore ebp, no memory
references ("m") before
this point */
"popl %%ebx \n\t"
:
"=S" (temp_id.raw), /* ESI, 0 */
:
"a" (mcp_or_new_chief), /* EAX, 2 */
"c" (esp), /* ECX, 3 */
"d" (eip), /* EDX, 4 */
"0" (destination.raw), /* ESI */
"D" (pager.raw) /* EDI */
:
"eax", "ecx", "edx", "edi"
);
return temp_id;
}
#endif /* __pic__ */
L4_INLINE void
l4_yield (void)
{
l4_thread_switch(L4_NIL_ID);
}
L4_INLINE dword_t
l4_get_kernelversion(void)
{
dword_t v;
__asm__ ("hlt" : "=a" (v));
return v;
}
#endif
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