264 lines
6.4 KiB
C++
264 lines
6.4 KiB
C++
/*
|
|
* \brief Syscall bindings for the NOVA microhypervisor x86_64
|
|
* \author Norman Feske
|
|
* \author Sebastian Sumpf
|
|
* \author Alexander Boettcher
|
|
* \date 2012-06-06
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 2012 Genode Labs
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person
|
|
* obtaining a copy of this software and associated documentation
|
|
* files (the "Software"), to deal in the Software without
|
|
* restriction, including without limitation the rights to use,
|
|
* copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following
|
|
* conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be
|
|
* included in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
|
|
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
|
|
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
|
|
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
|
* OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
#ifndef _PLATFORM__NOVA_SYSCALLS_H_
|
|
#define _PLATFORM__NOVA_SYSCALLS_H_
|
|
|
|
#include <nova/stdint.h>
|
|
#include <nova/syscall-generic.h>
|
|
|
|
#define ALWAYS_INLINE __attribute__((always_inline))
|
|
|
|
namespace Nova {
|
|
|
|
ALWAYS_INLINE
|
|
inline mword_t rdi(Syscall s, uint8_t flags, mword_t sel)
|
|
{
|
|
return sel << 8 | (flags & 0xf) << 4 | s;
|
|
}
|
|
|
|
|
|
ALWAYS_INLINE
|
|
inline uint8_t syscall_0(Syscall s, uint8_t flags, mword_t sel = 0)
|
|
{
|
|
mword_t status = rdi(s, flags, sel);
|
|
|
|
asm volatile ("syscall"
|
|
: "+D" (status)
|
|
:
|
|
: "rcx", "r11", "memory");
|
|
return status;
|
|
}
|
|
|
|
|
|
ALWAYS_INLINE
|
|
inline uint8_t syscall_1(Syscall s, uint8_t flags, mword_t p1, mword_t * p2 = 0)
|
|
{
|
|
mword_t status = rdi(s, flags, 0);
|
|
|
|
asm volatile ("syscall"
|
|
: "+D" (status), "+S" (p1)
|
|
:
|
|
: "rcx", "r11", "memory");
|
|
if (p2) *p2 = p1;
|
|
return status;
|
|
}
|
|
|
|
|
|
ALWAYS_INLINE
|
|
inline uint8_t syscall_2(Syscall s, uint8_t flags, mword_t sel, mword_t p1, mword_t p2)
|
|
{
|
|
mword_t status = rdi(s, flags, sel);
|
|
|
|
asm volatile ("syscall"
|
|
: "+D" (status)
|
|
: "S" (p1), "d" (p2)
|
|
: "rcx", "r11", "memory");
|
|
return status;
|
|
}
|
|
|
|
|
|
ALWAYS_INLINE
|
|
inline uint8_t syscall_3(Syscall s, uint8_t flags, unsigned sel,
|
|
mword_t p1, mword_t p2, mword_t p3)
|
|
{
|
|
mword_t status = rdi(s, flags, sel);
|
|
|
|
asm volatile ("syscall"
|
|
: "+D" (status)
|
|
: "S" (p1), "d" (p2), "a" (p3)
|
|
: "rcx", "r11", "memory");
|
|
return status;
|
|
}
|
|
|
|
|
|
ALWAYS_INLINE
|
|
inline uint8_t syscall_4(Syscall s, uint8_t flags, mword_t sel,
|
|
mword_t p1, mword_t p2, mword_t p3, mword_t p4)
|
|
{
|
|
mword_t status = rdi(s, flags, sel);
|
|
register mword_t r8 asm ("r8") = p4;
|
|
|
|
asm volatile ("syscall;"
|
|
: "+D" (status)
|
|
: "S" (p1), "d" (p2), "a" (p3), "r" (r8)
|
|
: "rcx", "r11", "memory");
|
|
return status;
|
|
}
|
|
|
|
|
|
ALWAYS_INLINE
|
|
inline uint8_t syscall_5(Syscall s, uint8_t flags, mword_t sel,
|
|
mword_t p1, mword_t p2, mword_t &p3, mword_t &p4)
|
|
{
|
|
mword_t status = rdi(s, flags, sel);
|
|
|
|
asm volatile ("syscall"
|
|
: "+D" (status), "+S"(p3), "+d"(p4)
|
|
:
|
|
: "rcx", "r11", "memory");
|
|
return status;
|
|
}
|
|
|
|
|
|
ALWAYS_INLINE
|
|
inline uint8_t call(mword_t pt)
|
|
{
|
|
return syscall_0(NOVA_CALL, 0, pt);
|
|
}
|
|
|
|
|
|
ALWAYS_INLINE
|
|
inline void reply(void *next_sp)
|
|
{
|
|
asm volatile ("mov %1, %%rsp;"
|
|
"syscall;"
|
|
:
|
|
: "D" (NOVA_REPLY), "ir" (next_sp)
|
|
: "memory");
|
|
}
|
|
|
|
|
|
ALWAYS_INLINE
|
|
inline uint8_t create_pd(mword_t pd0, mword_t pd, Crd crd)
|
|
{
|
|
return syscall_2(NOVA_CREATE_PD, 0, pd0, pd, crd.value());
|
|
}
|
|
|
|
|
|
ALWAYS_INLINE
|
|
inline uint8_t create_ec(mword_t ec, mword_t pd,
|
|
mword_t cpu, mword_t utcb,
|
|
mword_t esp, mword_t evt,
|
|
bool global = 0)
|
|
{
|
|
return syscall_4(NOVA_CREATE_EC, global, ec, pd,
|
|
(cpu & 0xfff) | (utcb & ~0xfff),
|
|
esp, evt);
|
|
}
|
|
|
|
|
|
ALWAYS_INLINE
|
|
inline uint8_t ec_ctrl(mword_t ec)
|
|
{
|
|
return syscall_0(NOVA_EC_CTRL, 0, ec);
|
|
}
|
|
|
|
ALWAYS_INLINE
|
|
inline uint8_t create_sc(mword_t sc, mword_t pd, mword_t ec, Qpd qpd)
|
|
{
|
|
return syscall_3(NOVA_CREATE_SC, 0, sc, pd, ec, qpd.value());
|
|
}
|
|
|
|
|
|
ALWAYS_INLINE
|
|
inline uint8_t create_pt(mword_t pt, mword_t pd, mword_t ec, Mtd mtd, mword_t rip)
|
|
{
|
|
return syscall_4(NOVA_CREATE_PT, 0, pt, pd, ec, mtd.value(), rip);
|
|
}
|
|
|
|
|
|
ALWAYS_INLINE
|
|
inline uint8_t create_sm(mword_t sm, mword_t pd, mword_t cnt)
|
|
{
|
|
return syscall_2(NOVA_CREATE_SM, 0, sm, pd, cnt);
|
|
}
|
|
|
|
|
|
ALWAYS_INLINE
|
|
inline uint8_t revoke(Crd crd, bool self = true)
|
|
{
|
|
return syscall_1(NOVA_REVOKE, self, crd.value());
|
|
}
|
|
|
|
|
|
ALWAYS_INLINE
|
|
inline uint8_t lookup(Crd &crd)
|
|
{
|
|
mword_t crd_r;
|
|
uint8_t res=syscall_1(NOVA_LOOKUP, 0, crd.value(), &crd_r);
|
|
crd = Crd(crd_r);
|
|
return res;
|
|
}
|
|
|
|
/**
|
|
* Semaphore operations
|
|
*/
|
|
enum Sem_op { SEMAPHORE_UP = 0, SEMAPHORE_DOWN = 1 };
|
|
|
|
|
|
ALWAYS_INLINE
|
|
inline uint8_t sm_ctrl(mword_t sm, Sem_op op)
|
|
{
|
|
return syscall_0(NOVA_SM_CTRL, op, sm);
|
|
}
|
|
|
|
|
|
ALWAYS_INLINE
|
|
inline uint8_t sc_ctrl(mword_t sm, Sem_op op, mword_t &time)
|
|
{
|
|
mword_t status = rdi(NOVA_SC_CTRL, op, sm);
|
|
mword_t time_h;
|
|
|
|
uint8_t res = syscall_5(NOVA_SC_CTRL, op, sm, 0, 0, time_h, time);
|
|
asm volatile ("syscall"
|
|
: "+D" (status), "=S"(time_h), "=d"(time)
|
|
:
|
|
: "rcx", "r11", "memory");
|
|
|
|
time = (time_h & ~0xFFFFFFFFULL) | (time & 0xFFFFFFFFULL);
|
|
return res;
|
|
}
|
|
|
|
|
|
ALWAYS_INLINE
|
|
inline uint8_t assign_pci(mword_t pd, mword_t mem, mword_t rid)
|
|
{
|
|
return syscall_2(NOVA_ASSIGN_GSI, 0, pd, mem, rid);
|
|
}
|
|
|
|
ALWAYS_INLINE
|
|
inline uint8_t assign_gsi(mword_t sm, mword_t dev, mword_t rid)
|
|
{
|
|
mword_t dummy1, dummy2;
|
|
return syscall_5(NOVA_ASSIGN_GSI, 0, sm, dev, rid, dummy1, dummy2);
|
|
}
|
|
|
|
ALWAYS_INLINE
|
|
inline uint8_t assign_gsi(mword_t sm, mword_t dev, mword_t rid, mword_t &msi_addr, mword_t &msi_data)
|
|
{
|
|
return syscall_5(NOVA_ASSIGN_GSI, 0, sm, dev, rid, msi_addr, msi_data);
|
|
}
|
|
}
|
|
#endif /* _PLATFORM__NOVA_SYSCALLS_H_ */
|