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90 lines
3.0 KiB
C
90 lines
3.0 KiB
C
#ifndef _8087_H_
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#define _8087_H_
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/*This file is a series of macros to get the 386+ based x87 emulation working with
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the 808x emulation*/
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#define X8087
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#define OP_TABLE(name) ops_808x_##name
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#define CLOCK_CYCLES(c) cycles -= (c)
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#define CLOCK_CYCLES_ALWAYS(c) cycles -= (c)
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#define fetch_ea_16(fetchdat)
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#define fetch_ea_32(fetchdat)
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#define SEG_CHECK_READ(seg)
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#define SEG_CHECK_WRITE(seg)
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#define CHECK_WRITE(seg, addr_lo, addr_hi)
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#define PREFETCH_RUN(timing, bytes, rmdat, a, b, c, d, e)
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static uint32_t readmeml(uint32_t seg, uint32_t addr) { return readmemw(seg, addr) | (readmemw(seg, addr + 2) << 16); }
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static uint64_t readmemq(uint32_t seg, uint32_t addr) {
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return (uint64_t)readmemw(seg, addr) | ((uint64_t)readmemw(seg, addr + 2) << 16) |
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((uint64_t)readmemw(seg, addr + 4) << 32) | ((uint64_t)readmemw(seg, addr + 6) << 48);
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}
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static void writememb_8087(uint32_t seg, uint32_t addr, uint8_t val) { writememb(seg + addr, val); }
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static void writememl(uint32_t seg, uint32_t addr, uint32_t val) {
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writememw(seg, addr, val & 0xffff);
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writememw(seg, addr + 2, (val >> 16) & 0xffff);
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}
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static void writememq(uint32_t seg, uint32_t addr, uint64_t val) {
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writememw(seg, addr, val & 0xffff);
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writememw(seg, addr + 2, (val >> 16) & 0xffff);
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writememw(seg, addr + 4, (val >> 32) & 0xffff);
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writememw(seg, addr + 6, (val >> 48) & 0xffff);
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}
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static inline uint32_t geteal() {
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if (cpu_mod == 3)
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fatal("geteal cpu_mod==3\n");
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return readmeml(easeg, cpu_state.eaaddr);
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}
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static inline uint64_t geteaq() {
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if (cpu_mod == 3)
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fatal("geteaq cpu_mod==3\n");
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return readmemq(easeg, cpu_state.eaaddr);
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}
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static inline void seteal(uint32_t val) {
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if (cpu_mod == 3)
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fatal("seteal cpu_mod==3\n");
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else
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writememl(easeg, cpu_state.eaaddr, val);
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}
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static inline void seteaq(uint64_t val) {
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if (cpu_mod == 3)
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fatal("seteaq cpu_mod==3\n");
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else
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writememq(easeg, cpu_state.eaaddr, val);
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}
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#define flags_rebuild()
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#define CF_SET() (cpu_state.flags & C_FLAG)
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#define NF_SET() (cpu_state.flags & N_FLAG)
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#define PF_SET() (cpu_state.flags & P_FLAG)
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#define VF_SET() (cpu_state.flags & V_FLAG)
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#define ZF_SET() (cpu_state.flags & Z_FLAG)
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#define cond_O (VF_SET())
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#define cond_NO (!VF_SET())
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#define cond_B (CF_SET())
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#define cond_NB (!CF_SET())
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#define cond_E (ZF_SET())
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#define cond_NE (!ZF_SET())
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#define cond_BE (CF_SET() || ZF_SET())
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#define cond_NBE (!CF_SET() && !ZF_SET())
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#define cond_S (NF_SET())
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#define cond_NS (!NF_SET())
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#define cond_P (PF_SET())
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#define cond_NP (!PF_SET())
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#define cond_L (((NF_SET()) ? 1 : 0) != ((VF_SET()) ? 1 : 0))
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#define cond_NL (((NF_SET()) ? 1 : 0) == ((VF_SET()) ? 1 : 0))
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#define cond_LE (((NF_SET()) ? 1 : 0) != ((VF_SET()) ? 1 : 0) || (ZF_SET()))
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#define cond_NLE (((NF_SET()) ? 1 : 0) == ((VF_SET()) ? 1 : 0) && (!ZF_SET()))
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#define writememb writememb_8087
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#include "x87_ops.h"
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#undef writememb
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#endif /* _8087_H_ */
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