85 lines
3.5 KiB
C
85 lines
3.5 KiB
C
// The OS/K Team licenses this file to you under the MIT license.
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// See the LICENSE file in the project root for more information.
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#include <pc/arch.h>
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#include <in/flags.h>
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#include <in/arch_i.h>
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#define GETV(v, p) \
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ulong v; \
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assert(p); \
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if (ACC_FMT_IS_MEM(p->type)) \
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v = readmem(ctx, p->addr, p->mlen); \
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else v = p->val
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#define IMPL_START_0(name) \
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bool i_##name(ctx_t *ctx, acc_t *p1, acc_t *p2, ulong *ret) \
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{
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#define IMPL_START_1(name) \
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bool i_##name(ctx_t *ctx, acc_t *p1, acc_t *p2, ulong *ret) \
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{ \
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GETV(v1, p1);
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#define IMPL_START_2(name) \
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bool i_##name(ctx_t *ctx, acc_t *p1, acc_t *p2, ulong *ret) \
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{ \
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GETV(v1, p1); \
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GETV(v2, p2);
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#define IMPL_OUT_ZSF \
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SET_ZSF(v1); \
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IMPL_OUT
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#define IMPL_OUT \
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*ret = v1; \
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return 1; \
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}
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// XXX
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#define IMPL_OUT_2 \
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*ret = v1; \
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return 1; \
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}
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#define IMPL_END \
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return 0; \
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}
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//
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// Consistency checks
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//
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#define CHK_SUPERV() \
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do { \
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if ((cr0 & UF) == 1) { \
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_except(ctx, E_SYS, "Supervisor-only INSTR"); \
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} \
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} while (0)
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#define CHK_STACK(op) \
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if (rsp % 8 > 0 || rbp % 8 > 0) { \
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_except(ctx, E_STA, "Misaligned stack REGS"); \
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} \
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if (rbp op rsp) { \
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_except(ctx, E_STU, "Stack underflow"); \
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}
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//
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// Common operations
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//
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#define PUSH(v) \
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rsp -= 8; \
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writemem64(ctx, v, rsp);
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#define POP(v) \
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v = readmem64(ctx, rsp); \
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rsp += 8;
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#define JUMP(v) \
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rip = v + cr1
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