Removed several excess files.

386_ref.cpp

@@ -1,284 +0,0 @@
-extern "C"
-{
-#include <stdarg.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include <wchar.h>
-#include <math.h>
-#ifndef INFINITY
-# define INFINITY   (__builtin_inff())
-#endif
-#define HAVE_STDARG_H
-#include "../86box.h"
-#include "cpu.h"
-#include "x86.h"
-#include "x87.h"
-#include "../nmi.h"
-#include "../mem.h"
-#include "../pic.h"
-#include "../pit.h"
-#include "../timer.h"
-#include "../floppy/fdd.h"
-#include "../floppy/fdc.h"
-
-#define CPU_BLOCK_END()
-
-uint16_t flags,eflags;
-uint32_t oldds,oldss,olddslimit,oldsslimit,olddslimitw,oldsslimitw;
-
-x86seg gdt,ldt,idt,tr;
-x86seg _cs,_ds,_es,_ss,_fs,_gs;
-x86seg _oldds;
-
-uint32_t cr2, cr3, cr4;
-uint32_t dr[8];
-
-#include "x86_flags.h"
-
-#ifdef ENABLE_386_REF_LOG
-int x386_ref_do_log = ENABLE_386_REF_LOG;
-#endif
-
-
-static void
-x386_ref_log(const char *fmt, ...)
-{
-#ifdef ENABLE_386_REF_LOG
-    va_list ap;
-
-    if (x386_do_log) {
-	va_start(ap, fmt);
-	pclog_ex(fmt, ap);
-	va_end(ap);
-    }
-#endif
-}
-
-
-enum class translate_kind
-{
-    TRANSLATE_READ, TRANSLATE_WRITE, TRANSLATE_EXEC
-};
-
-
-enum class exception_type
-{
-    FAULT, TRAP, ABORT
-};
-
-
-struct cpu_exception
-{
-    exception_type type;
-    uint8_t fault_type;
-    uint32_t error_code;
-    bool error_code_valid;
-    cpu_exception(exception_type _type, uint8_t _fault_type, uint32_t errcode, bool errcodevalid)
-    : type(_type)
-    , fault_type(_fault_type)
-    , error_code(errcode)
-    , error_code_valid(errcodevalid) {}
-};
-
-
-void
-type_check_ref(x86seg* segment, uint32_t offset, translate_kind kind)
-{
-    bool system_seg = !((segment->flags_ref >> 4) & 1);
-    bool executable = (segment->flags_ref >> 3) & 1;
-
-    if(!system_seg)
-    {
-	if(executable) {
-		bool readable = (segment->flags_ref >> 1) & 1;
-		switch(kind) {
-			case TRANSLATE_READ:
-				if (!readable)
-					throw cpu_exception(FAULT, ABRT_GPF, 0, true);
-				break;
-			case TRANSLATE_WRITE:
-				throw cpu_exception(FAULT, ABRT_GPF, 0, true);
-				break;
-			default:
-				break;
-		}
-	} else {
-		bool writeable = (segment->flags_ref >> 1) & 1;
-		switch(kind) {
-			case TRANSLATE_WRITE:
-				if (!writeable)
-					throw cpu_exception(FAULT, ABRT_GPF, 0, true);
-				break;
-			case TRANSLATE_EXEC:
-				throw cpu_exception(FAULT, ABRT_GPF, 0, true);
-				break;
-			default:
-				break;
-		}
-	}
-    } else {
-	// TODO
-	x386_ref_log("type_check_ref called with a system-type segment! Execution correctness is not guaranteed past this point!\n");
-    }
-}
-
-
-bool
-limit_check_ref(x86seg* segment, uint32_t offset, translate_kind kind)
-{
-    uint8_t fault_type = ABRT_GPF;
-    uint32_t addr = offset & ((1 << (32 - 12)) - 1);
-
-    if (segment == &_ss)
-	fault_type = ABRT_SS;
-
-    switch(kind) {
-	case translate_kind::READ:
-	case translate_kind::WRITE:
-		// Data segment.
-		bool expand_down = (segment->flags_ref >> 2) & 1;
-		bool big_seg = (segment->flags_ref >> 14) & 1;		// TODO: Not sure if this is ever used. Test this!
-		bool granularity = (segment->flags_ref >> 15) & 1;
-		uint32_t lower_bound;
-		uint32_t upper_bound;
-		if (big_seg != granularity)
-			x386_ref_log("B bit doesn't equal granularity bit! Execution correctness is not guaranteed past this point!\n");
-		if (expand_down) {
-			if (granularity) {
-				lower_bound = ((addr << 12) | 0xfff) + 1;
-				upper_bound = 0xffffffff; //4G - 1
-			} else {
-				lower_bound = addr + 1;
-				upper_bound = 0xffff; //64K - 1
-			}
-		} else {
-			lower_bound = 0;
-			if (granularity)
-				upper_bound = (addr << 12) | 0xfff;
-			else
-				upper_bound = addr;
-		}
-		if ((addr < lower_bound) || (addr > upper_bound))
-			throw cpu_exception(FAULT, fault_type, 0, true);
-		break;
-
-	default:
-		bool granularity = (segment->flags_ref >> 15) & 1;
-		uint32_t limit;
-
-		if (granularity)
-			limit = (addr << 12) | 0xfff;
-		else
-			limit = addr;
-
-		if (addr > limit)
-			throw cpu_exception(FAULT, fault_type, 0, true);
-		break;
-    }
-}
-
-
-void
-privilege_check_ref(x86seg* segment, uint32_t offset, translate_kind kind)
-{
-    bool system_seg = !((segment->flags_ref >> 4) & 1);
-    bool executable = (segment->flags_ref >> 3) & 1;
-
-    if (!system_seg) {
-	if(executable) {
-		bool conforming = (segment->flags_ref >> 2) & 1;
-		if (conforming)
-			return;
-		else {
-			int seg_rpl = segment->seg & 3;
-			int dpl = (segment->flags_ref >> 5) & 3;
-			if (dpl < CPL)
-				throw cpu_exception(FAULT, ABRT_GPF, 0, true);
-			if (dpl < seg_rpl)
-				throw cpu_exception(FAULT, ABRT_GPF, 0, true);
-		}
-	} else {
-		int seg_rpl = segment->seg & 3;
-		int dpl = (segment->flags_ref >> 5) & 3;
-		if (dpl < CPL)
-			throw cpu_exception(FAULT, ABRT_GPF, 0, true);
-		if (dpl < seg_rpl)
-			throw cpu_exception(FAULT, ABRT_GPF, 0, true);
-	}
-    } else {
-	// TODO
-	x386_ref_log("privilege_check_ref called with a system-type segment! Execution correctness is not guaranteed past this point!\n");
-    }
-}
-
-
-#define rammap(x) ((uint32_t *)(_mem_exec[(x) >> 14]))[((x) >> 2) & 0xfff]
-
-
-uint32_t
-translate_addr_ref(x86seg* segment, uint32_t offset, translate_kind kind)
-{
-    // Segment-level checks.
-    type_check_ref(segment, offset, kind);
-    limit_check_ref(segment, offset, kind);
-    privilege_check_ref(segment, offset, kind);
-
-    uint32_t addr = segment->base + offset;
-
-    if (!(cr0 >> 31))
-	return addr;
-}
-
-
-void
-readmemb_ref(x86seg* segment, uint32_t offset)
-{
-    uint32_t addr = translate_addr_ref(segment, offset, TRANSLATE_READ);
-    return mem_readb_phys_dma(addr);
-}
-
-
-void
-writememb_ref(x86seg* segment, uint32_t offset, uint8_t data)
-{
-    uint32_t addr = translate_addr_ref(segment, offset, TRANSLATE_READ);
-    mem_writeb_phys_dma(addr, data);
-}
-
-
-void
-exec386_ref(int cycs)
-{
-    uint8_t temp;
-    uint32_t addr;
-    int tempi;
-    int cycdiff;
-    int oldcyc;
-
-    cycles+=cycs;
-
-    while (cycles>0) {
-	timer_start_period(cycles << TIMER_SHIFT);
-
-	oldcs = CS;
-	cpu_state.oldpc = cpu_state.pc;
-	oldcpl = CPL;
-	cpu_state.op32 = use32;
-
-	x86_was_reset = 0;
-
-	dontprint = 0;
-
-	cpu_state.ea_seg = &_ds;
-	cpu_state.ssegs = 0;
-
-	try {
-	} catch(cpu_exception) {
-	}
-
-	timer_end_period(cycles << TIMER_SHIFT);
-    }
-}
-}