diff options
Diffstat (limited to 'board/MAI/bios_emulator/scitech/src/v86bios/x86emu.c')
| -rw-r--r-- | board/MAI/bios_emulator/scitech/src/v86bios/x86emu.c | 316 |
1 files changed, 0 insertions, 316 deletions
diff --git a/board/MAI/bios_emulator/scitech/src/v86bios/x86emu.c b/board/MAI/bios_emulator/scitech/src/v86bios/x86emu.c deleted file mode 100644 index b5c99d7a7f..0000000000 --- a/board/MAI/bios_emulator/scitech/src/v86bios/x86emu.c +++ /dev/null @@ -1,316 +0,0 @@ -/* - * Copyright 1999 Egbert Eich - * - * Permission to use, copy, modify, distribute, and sell this software and its - * documentation for any purpose is hereby granted without fee, provided that - * the above copyright notice appear in all copies and that both that - * copyright notice and this permission notice appear in supporting - * documentation, and that the name of the authors not be used in - * advertising or publicity pertaining to distribution of the software without - * specific, written prior permission. The authors makes no representations - * about the suitability of this software for any purpose. It is provided - * "as is" without express or implied warranty. - * - * THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, - * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO - * EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR - * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, - * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER - * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR - * PERFORMANCE OF THIS SOFTWARE. - */ -#include "debug.h" - -#define IF_MASK 0x00000200 -#define VIF_MASK 0x00080000 /* virtual interrupt flag */ -#define VIP_MASK 0x00100000 /* virtual interrupt pending */ - -#include </usr/include/unistd.h> -#include <errno.h> -#include <asm/unistd.h> -/*#include <syscall-list.h> */ -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <stdarg.h> -#ifdef __alpha__ -#include <sys/io.h> -#endif -#include <signal.h> -#include <setjmp.h> -#include "AsmMacros.h" -#include "v86bios.h" -# define DEBUG -#include "x86emu.h" -#undef DEBUG - -#define M _X86EMU_env -#define CPU_REG(reg) M.x86.R_##reg - -struct pio P; - -void -setup_io(void) -{ - if (!Config.PrintPort && !Config.IoStatistics) { - -#if defined (__i386__) - P.inb = (u8(*)(u16))inb; - P.inw = (u16(*)(u16))inw; - P.outb = (void(*)(u16,u8))outb; - P.outw = (void(*)(u16,u16))outw; -#else - P.inb = p_inb; - P.inw = p_inw; - P.outb = p_outb; - P.outw = p_outw; -#endif -#if defined (__i386__) && ! defined(NEED_PCI_IO) - P.inl = (u32(*)(u16))inl; - P.outl = (void(*)(u16,u32))outl; -#else - P.inl = p_inl; - P.outl = p_outl; -#endif - } else { - P.inb = p_inb; - P.inw = p_inw; - P.inl = p_inl; - P.outb = p_outb; - P.outw = p_outw; - P.outl = p_outl; - } -} - -void -x86emu_do_int(int num) -{ - struct regs86 regs; - - i_printf("int 0x%x received: ax:0x%x",num,CPU_REG(AX)); - if (Config.PrintIp) - i_printf(" at: 0x%x\n",getIP()); - else - i_printf("\n"); - - /* try to run bios interrupt */ - - /* if not installed fall back */ -#define COPY(x,y) regs.y = M.x86.x -#define COPY_R(x,y) M.x86.x = regs.y - - COPY(R_EAX,eax); - COPY(R_EBX,ebx); - COPY(R_ECX,ecx); - COPY(R_EDX,edx); - COPY(R_ESI,esi); - COPY(R_EDI,edi); - COPY(R_EBP,ebp); - COPY(R_EIP,eip); - COPY(R_ESP,esp); - COPY(R_CS,cs); - COPY(R_SS,ss); - COPY(R_DS,ds); - COPY(R_ES,es); - COPY(R_FS,fs); - COPY(R_GS,gs); - COPY(R_EFLG,eflags); - - if (!(int_handler(num,®s))) { - if (!run_bios_int(num,®s)) - goto unknown_int; - else - return; - } - - COPY_R(R_EAX,eax); - COPY_R(R_EBX,ebx); - COPY_R(R_ECX,ecx); - COPY_R(R_EDX,edx); - COPY_R(R_ESI,esi); - COPY_R(R_EDI,edi); - COPY_R(R_EBP,ebp); - COPY_R(R_EIP,eip); - COPY_R(R_ESP,esp); - COPY_R(R_CS,cs); - COPY_R(R_SS,ss); - COPY_R(R_DS,ds); - COPY_R(R_ES,es); - COPY_R(R_FS,fs); - COPY_R(R_GS,gs); - COPY_R(R_EFLG,eflags); - return; - - unknown_int: - fprintf(stderr,"\nUnknown vm86_int: %X\n\n",num); - X86EMU_halt_sys(); - return; - -#undef COPY -#undef COPY_R -} - -void -setup_x86emu(unsigned long bios_start, i86biosRegsPtr regs) -{ - int i; - CARD32 eip; - CARD16 cs; - X86EMU_intrFuncs intFuncs[256]; - - X86EMU_pioFuncs pioFuncs = { - (u8(*)(u16))P.inb, - (u16(*)(u16))P.inw, - (u32(*)(u16))P.inl, - (void(*)(u16,u8))P.outb, - (void(*)(u16,u16))P.outw, - (void(*)(u16,u32))P.outl - }; -#ifdef __alpha__ - X86EMU_memFuncs memFuncs = { - (u8(*)(u32))mem_rb, - (u16(*)(u32))mem_rw, - (u32(*)(u32))mem_rl, - (void(*)(u32,u8))mem_wb, - (void(*)(u32,u16))mem_ww, - (void(*)(u32,u32))mem_wl - }; -#endif - M.mem_base = 0; - M.mem_size = 1024*1024 + 1024; - /* M.x86.debug = DEBUG_DISASSEMBLE_F | DEBUG_TRACE_F | DEBUG_DECODE_F; */ - /* M.x86.debug |= DEBUG_DECODE_F | DEBUG_TRACE_F; */ -/* - * For single step tracing compile x86emu with option -DDEBUG - */ - M.x86.debug = 0; - if (Config.PrintIp) - M.x86.debug = DEBUG_SAVE_CS_IP; - - if (Config.Trace) - X86EMU_trace_on(); - - X86EMU_setupPioFuncs(&pioFuncs); -#ifdef __alpha__ - X86EMU_setupMemFuncs(&memFuncs); -#endif - for (i=0;i<256;i++) - intFuncs[i] = x86emu_do_int; - X86EMU_setupIntrFuncs(intFuncs); - - eip = bios_start & 0xFFFF; - cs = (bios_start & 0xFF0000) >> 4; - - CPU_REG(EAX) = regs->ax; - CPU_REG(EBX) = regs->bx; - CPU_REG(ECX) = regs->cx; - CPU_REG(EDX) = regs->dx; - CPU_REG(ESI) = regs->si; - CPU_REG(EDI) = regs->di; - CPU_REG(EBP) = 0; - CPU_REG(EIP) = eip; - CPU_REG(CS) = cs; - CPU_REG(SP) = 0x100; - CPU_REG(SS) = 0x30; /* This is the standard pc bios stack */ - CPU_REG(ES) = regs->es; - CPU_REG(DS) = regs->ds; - CPU_REG(FS) = 0; - CPU_REG(GS) = 0; - CPU_REG(EFLG) |= (VIF_MASK | VIP_MASK | IF_MASK | 0x2); -} - -void -collect_bios_regs(i86biosRegsPtr regs) -{ - regs->ax = CPU_REG(EAX); - regs->bx = CPU_REG(EBX); - regs->cx = CPU_REG(ECX); - regs->dx = CPU_REG(EDX); - regs->es = CPU_REG(ES); - regs->ds = CPU_REG(DS); - regs->di = CPU_REG(EDI); - regs->si = CPU_REG(ESI); -} - -static void -do_x86emu(void) -{ - X86EMU_exec(); -} - -static jmp_buf x86_esc; -static void -vmexit(int unused) -{ - longjmp(x86_esc,1); -} - -void -do_x86(unsigned long bios_start, i86biosRegsPtr regs) -{ - static void (*org_handler)(int); - - setup_x86emu(bios_start,regs); - if (setjmp(x86_esc) == 0) { - org_handler = signal(2,vmexit); - do_x86emu(); - signal(2,org_handler); - collect_bios_regs(regs); - } else { - signal(2,org_handler); - printf("interrupted at 0x%x\n",((CARD16)CPU_REG(CS)) << 4 - | (CARD16)CPU_REG(EIP)); - } -} - -int -run_bios_int(int num, struct regs86 *regs) -{ -#ifdef V86BIOS_DEBUG - static int firsttime = 1; -#endif - /* check if bios vector is initialized */ - if (((CARD16*)0)[(num<<1)+1] == 0x0000) { /* SYS_BIOS_SEG ?*/ -#ifdef V86BIOS_DEBUG - i_printf("card BIOS not loaded\n"); -#endif - return 0; - } - -#ifdef V86BIOS_DEBUG - if (firsttime) { - dprint(0,0x3D0); - firsttime = 0; - } -#endif - - i_printf("calling card BIOS at: "); - i_printf("0x%x:%x\n",((CARD16 *) 0)[(num << 1) + 1], - (CARD32)((CARD16 *) 0)[num << 1]); - X86EMU_prepareForInt(num); - - return 1; -} - -CARD32 -getIntVect(int num) -{ - return ((CARD32*)0)[num]; -} -#if 0 -void -printk(const char *fmt, ...) -{ - va_list argptr; - va_start(argptr, fmt); - vfprintf(stdout, fmt, argptr); - fflush(stdout); - va_end(argptr); -} -#endif - -CARD32 -getIP(void) -{ - return (M.x86.saved_cs << 4) + M.x86.saved_ip; -} |