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mirror of https://gitlab.os-k.eu/os-k-team/kvisc.git synced 2023-08-25 14:05:46 +02:00
kvisc/vm/in/instrs.h
2019-06-14 12:46:09 +02:00

99 lines
4.5 KiB
C

// The OS/K Team licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
#include <pc/arch.h>
#include <in/flags.h>
#include <in/arch_i.h>
//----------------------------------------------------------------------------//
#define DECV(v, p) \
ulong v; \
GETV(v, p)
#define GETV(v, p) \
assert(p); \
if (ACC_FMT_IS_MEM(p->type)) \
v = readmem(ctx, p->addr, p->mlen); \
else v = p->val
#define DECVZX(v, p) \
ulong v; \
GETVZX(v, p)
#define GETVZX(v, p) \
assert(p); \
if (ACC_FMT_IS_MEM(p->type)) \
v = readmemzx(ctx, p->addr, p->mlen); \
else v = p->val
//----------------------------------------------------------------------------//
#define IMPL_START_0(name) \
bool i_##name(ctx_t *ctx, acc_t *p1, acc_t *p2, ulong *r1, ulong *r2) \
{
#define IMPL_START_1(name) \
bool i_##name(ctx_t *ctx, acc_t *p1, acc_t *p2, ulong *r1, ulong *r2) \
{ \
DECV(v1, p1);
#define IMPL_START_2(name) \
bool i_##name(ctx_t *ctx, acc_t *p1, acc_t *p2, ulong *r1, ulong *r2) \
{ \
DECV(v1, p1); \
DECV(v2, p2);
#define IMPL_OUT_ZSF \
SET_ZSF(v1); \
IMPL_OUT
#define IMPL_OUT \
*r1 = v1; \
return 1; \
}
#define IMPL_OUT_2 \
*r1 = v1; \
*r2 = v2; \
return 2; \
}
#define IMPL_END \
return 0; \
}
//----------------------------------------------------------------------------//
#define CHK_SUPERV() \
do { \
if ((cr0 & UF) > 0) { \
_except(ctx, E_SYS, "Supervisor-only INSTR"); \
} \
} while (0)
#define CHK_STACK(op) \
if (rsp % 8 > 0 || rbp % 8 > 0) { \
_except(ctx, E_STA, "Misaligned stack REGS"); \
} \
if (rbp op rsp) { \
_except(ctx, E_STU, "Stack underflow"); \
}
//----------------------------------------------------------------------------//
#define PUSH(v) \
rsp -= 8; \
writemem(ctx, v, rsp, 8);
#define POP(v) \
v = readmem(ctx, rsp, 8); \
rsp += 8;
#define JUMP(v) \
rip = v + cr1
//----------------------------------------------------------------------------//