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Diffstat (limited to 'hw/kdrive/vesa/vm86.c')
-rw-r--r--hw/kdrive/vesa/vm86.c765
1 files changed, 0 insertions, 765 deletions
diff --git a/hw/kdrive/vesa/vm86.c b/hw/kdrive/vesa/vm86.c
deleted file mode 100644
index 9d1fa8bcf..000000000
--- a/hw/kdrive/vesa/vm86.c
+++ /dev/null
@@ -1,765 +0,0 @@
-/*
- * $RCSId: xc/programs/Xserver/hw/kdrive/vesa/vm86.c,v 1.2 2002/02/19 00:18:05 keithp Exp $
- *
- * Copyright © 2000 Keith Packard
- *
- * 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 Keith Packard not be used in
- * advertising or publicity pertaining to distribution of the software without
- * specific, written prior permission. Keith Packard makes no
- * representations about the suitability of this software for any purpose. It
- * is provided "as is" without express or implied warranty.
- *
- * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
- * EVENT SHALL KEITH PACKARD 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.
- */
-/*
-Copyright (c) 2000 by Juliusz Chroboczek
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
-*/
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#include "vm86.h"
-
-#define PUSHW(vi, i) \
-{ vi->vms.regs.esp -= 2;\
- LMW(vi,MAKE_POINTER(vi->vms.regs.ss, vi->vms.regs.esp)) = i;}
-
-static int vm86old(struct vm86_struct *vms);
-static int vm86_loop(Vm86InfoPtr vi);
-
-static const U8 rev_ints[32] =
-{ 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0x80,
-};
-
-static const U8 retcode_data[2] =
-{ 0xCD, 0xFF };
-
-Vm86InfoPtr
-Vm86Setup(int mapHoles)
-{
- int devmem = -1, devzero = -1;
- void *magicMem, *loMem, *hiMem;
- void *hole1, *hole2;
- U32 stack_base, ret_code;
- Vm86InfoPtr vi = NULL;
-
- devmem = open("/dev/mem", O_RDWR);
- if(devmem < 0) {
- perror("open /dev/mem");
- goto fail;
- }
-
- devzero = open("/dev/zero", O_RDWR);
- if(devzero < 0) {
- perror("open /dev/zero");
- goto fail;
- }
-
- magicMem = MAP_FAILED;
- loMem = MAP_FAILED;
- hiMem = MAP_FAILED;
- hole1 = MAP_FAILED;
- hole2 = MAP_FAILED;
-
-
- magicMem = mmap((void*)MAGICMEM_BASE, MAGICMEM_SIZE,
- PROT_READ | PROT_WRITE | PROT_EXEC,
- MAP_PRIVATE | MAP_FIXED, devmem, MAGICMEM_BASE);
-
- if(magicMem == MAP_FAILED) {
- ErrorF("Couldn't map magic memory\n");
- goto unmapfail;
- }
-
- if(mapHoles) {
- hole1 = mmap((void*)HOLE1_BASE, HOLE1_SIZE,
- PROT_READ | PROT_WRITE | PROT_EXEC,
- MAP_PRIVATE | MAP_FIXED, devzero, HOLE1_BASE);
-
- if(hole1 == MAP_FAILED) {
- ErrorF("Couldn't map first hole\n");
- goto unmapfail;
- }
- }
-
- loMem = mmap((void*)LOMEM_BASE, LOMEM_SIZE,
- PROT_READ | PROT_WRITE | PROT_EXEC,
- MAP_PRIVATE | MAP_FIXED, devzero, LOMEM_BASE);
- if(loMem == MAP_FAILED) {
- ErrorF("Couldn't map low memory\n");
- munmap(magicMem, MAGICMEM_SIZE);
- goto unmapfail;
- }
-
- if(mapHoles) {
- hole2 = mmap((void*)HOLE2_BASE, HOLE2_SIZE,
- PROT_READ | PROT_WRITE | PROT_EXEC,
- MAP_PRIVATE | MAP_FIXED, devzero, HOLE2_BASE);
-
- if(hole2 == MAP_FAILED) {
- ErrorF("Couldn't map first hole\n");
- goto unmapfail;
- }
- }
-
- hiMem = mmap((void*)HIMEM_BASE, HIMEM_SIZE,
- PROT_READ | PROT_WRITE | PROT_EXEC,
- MAP_SHARED | MAP_FIXED,
- devmem, HIMEM_BASE);
- if(hiMem == MAP_FAILED) {
- ErrorF("Couldn't map high memory\n");
- goto unmapfail;
- }
-
- vi = xalloc(sizeof(Vm86InfoRec));
- if (!vi)
- goto unmapfail;
-
- vi->magicMem = magicMem;
- vi->hole1 = hole1;
- vi->loMem = loMem;
- vi->hole2 = hole2;
- vi->hiMem = hiMem;
- vi->brk = LOMEM_BASE;
-
- stack_base = Vm86AllocateMemory(vi, STACK_SIZE);
- if(stack_base == ALLOC_FAIL)
- goto unmapfail;
- ret_code = Vm86AllocateMemory(vi, sizeof(retcode_data));
- if(ret_code == ALLOC_FAIL)
- goto unmapfail;
-
- vi->stack_base = stack_base;
- vi->ret_code = ret_code;
-
- memset(&vi->vms, 0, sizeof(struct vm86_struct));
- vi->vms.flags = 0;
- vi->vms.screen_bitmap = 0;
- vi->vms.cpu_type = CPU_586;
- memcpy(&vi->vms.int_revectored, rev_ints, sizeof(rev_ints));
-
- iopl(3);
-
- if(devmem >= 0)
- close(devmem);
- if(devzero >= 0)
- close(devzero);
-
- return vi;
-
-unmapfail:
- if(magicMem != MAP_FAILED) munmap(magicMem, MAGICMEM_SIZE);
- if(hole1 != MAP_FAILED) munmap(hole1, HOLE1_SIZE);
- if(loMem != MAP_FAILED) munmap(loMem, LOMEM_SIZE);
- if(hole2 != MAP_FAILED) munmap(hole2, HOLE2_SIZE);
- if(hiMem != MAP_FAILED) munmap(hiMem, HIMEM_SIZE);
-fail:
- if(devmem >= 0)
- close(devmem);
- if(devzero >= 0)
- close(devzero);
- if(vi)
- xfree(vi);
- return NULL;
-}
-
-void
-Vm86Cleanup(Vm86InfoPtr vi)
-{
- if(vi->magicMem != MAP_FAILED) munmap(vi->magicMem, MAGICMEM_SIZE);
- if(vi->hole1 != MAP_FAILED) munmap(vi->hole1, HOLE1_SIZE);
- if(vi->loMem != MAP_FAILED) munmap(vi->loMem, LOMEM_SIZE);
- if(vi->hole2 != MAP_FAILED) munmap(vi->hole2, HOLE2_SIZE);
- if(vi->hiMem != MAP_FAILED) munmap(vi->hiMem, HIMEM_SIZE);
- xfree(vi);
-}
-
-int
-Vm86DoInterrupt(Vm86InfoPtr vi, int num)
-{
- U16 seg, off;
- int code;
-
- if(num < 0 || num>256) {
- ErrorF("Interrupt %d doesn't exist\n");
- return -1;
- }
- seg = MMW(vi,num * 4 + 2);
- off = MMW(vi,num * 4);
- if(MAKE_POINTER(seg, off) < ROM_BASE ||
- MAKE_POINTER(seg, off) >= ROM_BASE + ROM_SIZE) {
- ErrorF("Interrupt pointer (seg %x off %x) doesn't point at ROM\n",
- seg, off);
- return -1;
- }
- memcpy(&(LM(vi,vi->ret_code)), retcode_data, sizeof(retcode_data));
- vi->vms.regs.eflags = IF_MASK | IOPL_MASK;
- vi->vms.regs.ss = POINTER_SEGMENT(vi->stack_base);
- vi->vms.regs.esp = STACK_SIZE;
- PUSHW(vi, IF_MASK | IOPL_MASK);
- PUSHW(vi, POINTER_SEGMENT(vi->ret_code));
- PUSHW(vi, POINTER_OFFSET(vi->ret_code));
- vi->vms.regs.cs = seg;
- vi->vms.regs.eip = off;
- OsBlockSignals ();
- code = vm86_loop(vi);
- OsReleaseSignals ();
- if(code < 0) {
- ErrorF("vm86 failed (errno %d)\n", errno);
- return -1;
- } else if(code != 0) {
- ErrorF("vm86 returned 0x%04X\n", code);
- return -1;
- } else
- return 0;
-}
-
-int
-Vm86DoPOST(Vm86InfoPtr vi)
-{
- U16 seg, off;
- int code;
-
- seg = 0xC000;
- off = 3;
- if(MAKE_POINTER(seg, off) < ROM_BASE ||
- MAKE_POINTER(seg, off) >= ROM_BASE + ROM_SIZE) {
- ErrorF("BIOS pointer (seg %x off %x) doesn't point at ROM\n",
- seg, off);
- return -1;
- }
- memcpy(&(LM(vi,vi->ret_code)), retcode_data, sizeof(retcode_data));
- vi->vms.regs.ss = POINTER_SEGMENT(vi->stack_base);
- vi->vms.regs.esp = STACK_SIZE;
- PUSHW(vi, POINTER_SEGMENT(vi->ret_code));
- PUSHW(vi, POINTER_OFFSET(vi->ret_code));
- vi->vms.regs.cs = seg;
- vi->vms.regs.eip = off;
- OsBlockSignals ();
- code = vm86_loop(vi);
- OsReleaseSignals ();
- if(code < 0) {
- ErrorF("vm86 failed (errno %d)\n", errno);
- return -1;
- } else if(code != 0) {
- ErrorF("vm86 returned 0x%04X\n", code);
- return -1;
- } else
- return 0;
-}
-
-#define DEBUG_VBE 0
-#if DEBUG_VBE
-#define DBG(x) ErrorF x; usleep(10*1000)
-#else
-#define DBG(x)
-#endif
-
-static inline U8
-vm86_inb(U16 port)
-{
- U8 value;
-
- if (port != 0x3da)
- {
- DBG(("inb 0x%04x", port));
- }
- asm volatile ("inb %w1,%b0" : "=a" (value) : "d" (port));
- if (port != 0x3da)
- {
- DBG((" = 0x%02x\n", value));
- }
- return value;
-}
-
-static inline U16
-vm86_inw(U16 port)
-{
- U16 value;
- DBG(("inw 0x%04x", port));
- asm volatile ("inw %w1,%w0" : "=a" (value) : "d" (port));
- DBG((" = 0x%04x\n", value));
- return value;
-}
-
-static inline U32
-vm86_inl(U16 port)
-{
- U32 value;
- DBG(("inl 0x%04x", port));
- asm volatile ("inl %w1,%0" : "=a" (value) : "d" (port));
- DBG((" = 0x%08x\n", value));
- return value;
-}
-
-static inline void
-vm86_outb(U16 port, U8 value)
-{
-#if 0
- static U8 CR;
-
- if (port == 0x3d4)
- CR = value;
- if (port == 0x3d5 && CR == 0xa4)
- {
- DBG(("outb 0x%04x = 0x%02x (skipped)\n", port, value));
- return;
- }
-#endif
- DBG(("outb 0x%04x = 0x%02x\n", port, value));
- asm volatile ("outb %b0,%w1" : : "a" (value), "d" (port));
-}
-
-static inline void
-vm86_outw(U16 port, U16 value)
-{
- DBG(("outw 0x%04x = 0x%04x\n", port, value));
- asm volatile ("outw %w0,%w1" : : "a" (value), "d" (port));
-}
-
-static inline void
-vm86_outl(U16 port, U32 value)
-{
- DBG(("outl 0x%04x = 0x%08x\n", port, value));
- asm volatile ("outl %0,%w1" : : "a" (value), "d" (port));
-}
-
-#define SEG_CS 1
-#define SEG_DS 2
-#define SEG_ES 3
-#define SEG_SS 4
-#define SEG_GS 5
-#define SEG_FS 6
-#define REP 1
-#define REPNZ 2
-#define SET_8(_x, _y) (_x) = ((_x) & ~0xFF) | ((_y) & 0xFF);
-#define SET_16(_x, _y) (_x) = ((_x) & ~0xFFFF) | ((_y) & 0xFFFF);
-#define INC_IP(_i) SET_16(regs->eip, (regs->eip + _i))
-#define AGAIN INC_IP(1); goto again;
-
-static int
-vm86_emulate(Vm86InfoPtr vi)
-{
- struct vm86_regs *regs = &vi->vms.regs;
- U8 opcode;
- int size;
- int pref_seg = 0, pref_rep = 0, pref_66 = 0, pref_67 = 0;
-
- again:
- if(!Vm86IsMemory(vi, MAKE_POINTER(regs->cs, regs->eip))) {
- ErrorF("Trying to execute unmapped memory\n");
- return -1;
- }
- opcode = Vm86Memory(vi, MAKE_POINTER(regs->cs, regs->eip));
- switch(opcode) {
- case 0x2E: pref_seg = SEG_CS; AGAIN;
- case 0x3E: pref_seg = SEG_DS; AGAIN;
- case 0x26: pref_seg = SEG_ES; AGAIN;
- case 0x36: pref_seg = SEG_SS; AGAIN;
- case 0x65: pref_seg = SEG_GS; AGAIN;
- case 0x64: pref_seg = SEG_FS; AGAIN;
- case 0x66: pref_66 = 1; AGAIN;
- case 0x67: pref_67 = 1; AGAIN;
- case 0xF2: pref_rep = REPNZ; AGAIN;
- case 0xF3: pref_rep = REP; AGAIN;
-
- case 0xEC: /* IN AL, DX */
- SET_8(regs->eax, vm86_inb(regs->edx & 0xFFFF));
- INC_IP(1);
- break;
- case 0xED: /* IN AX, DX */
- if(pref_66)
- regs->eax = vm86_inl(regs->edx & 0xFFFF);
- else
- SET_16(regs->eax, vm86_inw(regs->edx & 0xFFFF));
- INC_IP(1);
- break;
- case 0xE4: /* IN AL, imm8 */
- SET_8(regs->eax,
- vm86_inb(Vm86Memory(vi, MAKE_POINTER(regs->cs, regs->eip+1))));
- INC_IP(2);
- break;
- case 0xE5: /* IN AX, imm8 */
- if(pref_66)
- regs->eax =
- vm86_inl(Vm86Memory(vi, MAKE_POINTER(regs->cs, regs->eip+1)));
- else
- SET_16(regs->eax,
- vm86_inw(Vm86Memory(vi, MAKE_POINTER(regs->cs, regs->eip+1))));
- INC_IP(2);
- break;
- case 0x6C: /* INSB */
- case 0x6D: /* INSW */
- if(opcode == 0x6C) {
- Vm86WriteMemory(vi, MAKE_POINTER(regs->es, regs->edi),
- vm86_inb(regs->edx & 0xFFFF));
- size = 1;
- } else if(pref_66) {
- Vm86WriteMemoryL(vi, MAKE_POINTER(regs->es, regs->edi),
- vm86_inl(regs->edx & 0xFFFF));
- size = 4;
- } else {
- Vm86WriteMemoryW(vi, MAKE_POINTER(regs->es, regs->edi),
- vm86_inw(regs->edx & 0xFFFF));
- size = 2;
- }
- if(regs->eflags & (1<<10))
- regs->edi -= size;
- else
- regs->edi += size;
- if(pref_rep) {
- if(pref_66) {
- regs->ecx--;
- if(regs->ecx != 0)
- goto again;
- } else {
- SET_16(regs->ecx, regs->ecx - 1);
- if((regs->ecx & 0xFFFF) != 0)
- goto again;
- }
- }
- INC_IP(1);
- break;
-
- case 0xEE: /* OUT DX, AL */
- vm86_outb(regs->edx & 0xFFFF, regs->eax & 0xFF);
- INC_IP(1);
- break;
- case 0xEF: /* OUT DX, AX */
- if(pref_66)
- vm86_outl(regs->edx & 0xFFFF, regs->eax);
- else
- vm86_outw(regs->edx & 0xFFFF, regs->eax & 0xFFFF);
- INC_IP(1);
- break;
- case 0xE6: /* OUT imm8, AL */
- vm86_outb(Vm86Memory(vi, MAKE_POINTER(regs->cs, regs->eip+1)),
- regs->eax & 0xFF);
- INC_IP(2);
- break;
- case 0xE7: /* OUT imm8, AX */
- if(pref_66)
- vm86_outl(Vm86Memory(vi, MAKE_POINTER(regs->cs, regs->eip+1)),
- regs->eax);
- else
- vm86_outw(Vm86Memory(vi, MAKE_POINTER(regs->cs, regs->eip+1)),
- regs->eax & 0xFFFF);
- INC_IP(2);
- break;
- case 0x6E: /* OUTSB */
- case 0x6F: /* OUTSW */
- if(opcode == 0x6E) {
- vm86_outb(regs->edx & 0xFFFF,
- Vm86Memory(vi, MAKE_POINTER(regs->es, regs->edi)));
- size = 1;
- } else if(pref_66) {
- vm86_outl(regs->edx & 0xFFFF,
- Vm86Memory(vi, MAKE_POINTER(regs->es, regs->edi)));
- size = 4;
- } else {
- vm86_outw(regs->edx & 0xFFFF,
- Vm86Memory(vi, MAKE_POINTER(regs->es, regs->edi)));
- size = 2;
- }
- if(regs->eflags & (1<<10))
- regs->edi -= size;
- else
- regs->edi += size;
- if(pref_rep) {
- if(pref_66) {
- regs->ecx--;
- if(regs->ecx != 0)
- goto again;
- } else {
- SET_16(regs->ecx, regs->ecx - 1);
- if((regs->ecx & 0xFFFF) != 0)
- goto again;
- }
- }
- INC_IP(1);
- break;
-
- case 0x0F:
- ErrorF("Hit 0F trap in VM86 code\n");
- return -1;
- case 0xF0:
- ErrorF("Hit lock prefix in VM86 code\n");
- return -1;
- case 0xF4:
- ErrorF("Hit HLT in VM86 code\n");
- return -1;
-
- default:
- ErrorF("Unhandled GP fault in VM86 code (opcode = 0x%02X)\n",
- opcode);
- return -1;
- }
- return 0;
-}
-#undef SEG_CS
-#undef SEG_DS
-#undef SEG_ES
-#undef SEG_SS
-#undef SEG_GS
-#undef SEG_FS
-#undef REP
-#undef REPNZ
-#undef SET_8
-#undef SET_16
-#undef INC_IP
-#undef AGAIN
-
-static int
-vm86_loop(Vm86InfoPtr vi)
-{
- int code;
-
- while(1) {
- code = vm86old(&vi->vms);
- switch(VM86_TYPE(code)) {
- case VM86_SIGNAL:
- continue;
- case VM86_UNKNOWN:
- code = vm86_emulate(vi);
- if(code < 0) {
- Vm86Debug(vi);
- return -1;
- }
- break;
- case VM86_INTx:
- if(VM86_ARG(code) == 0xFF)
- return 0;
- else {
- PUSHW(vi, vi->vms.regs.eflags)
- PUSHW(vi, vi->vms.regs.cs);
- PUSHW(vi, vi->vms.regs.eip);
- vi->vms.regs.cs = MMW(vi,VM86_ARG(code) * 4 + 2);
- vi->vms.regs.eip = MMW(vi,VM86_ARG(code) * 4);
- }
- break;
- case VM86_STI:
- ErrorF("VM86 code enabled interrupts\n");
- Vm86Debug(vi);
- return -1;
- default:
- ErrorF("Unexpected result code 0x%X from vm86\n", code);
- Vm86Debug(vi);
- return -1;
- }
- }
-}
-
-int
-Vm86IsMemory(Vm86InfoPtr vi, U32 i)
-{
- if(i >= MAGICMEM_BASE && i< MAGICMEM_BASE + MAGICMEM_SIZE)
- return 1;
- else if(i >= LOMEM_BASE && i< LOMEM_BASE + LOMEM_SIZE)
- return 1;
- else if(i >= HIMEM_BASE && i< HIMEM_BASE + HIMEM_SIZE)
- return 1;
- else
- return 0;
-}
-
-U8
-Vm86Memory(Vm86InfoPtr vi, U32 i)
-{
- if(i >= MAGICMEM_BASE && i< MAGICMEM_BASE + MAGICMEM_SIZE)
- return MM(vi, i);
- else if(i >= LOMEM_BASE && i< LOMEM_BASE + LOMEM_SIZE)
- return LM(vi, i);
- else if(i >= HIMEM_BASE && i< HIMEM_BASE + HIMEM_SIZE)
- return HM(vi, i);
- else {
- ErrorF("Reading unmapped memory at 0x%08X\n", i);
- return 0;
- }
-}
-
-U16
-Vm86MemoryW(Vm86InfoPtr vi, U32 i)
-{
- if(i >= MAGICMEM_BASE && i< MAGICMEM_BASE + MAGICMEM_SIZE)
- return MMW(vi, i);
- else if(i >= LOMEM_BASE && i< LOMEM_BASE + LOMEM_SIZE)
- return LMW(vi, i);
- else if(i >= HIMEM_BASE && i< HIMEM_BASE + HIMEM_SIZE)
- return HMW(vi, i);
- else {
- ErrorF("Reading unmapped memory at 0x%08X\n", i);
- return 0;
- }
-}
-
-U32
-Vm86MemoryL(Vm86InfoPtr vi, U32 i)
-{
- if(i >= MAGICMEM_BASE && i< MAGICMEM_BASE + MAGICMEM_SIZE)
- return MML(vi, i);
- else if(i >= LOMEM_BASE && i< LOMEM_BASE + LOMEM_SIZE)
- return LML(vi, i);
- else if(i >= HIMEM_BASE && i< HIMEM_BASE + HIMEM_SIZE)
- return HML(vi, i);
- else {
- ErrorF("Reading unmapped memory at 0x%08X\n", i);
- return 0;
- }
-}
-
-void
-Vm86WriteMemory(Vm86InfoPtr vi, U32 i, U8 val)
-{
- if(i >= MAGICMEM_BASE && i< MAGICMEM_BASE + MAGICMEM_SIZE)
- MM(vi, i) = val;
- else if(i >= LOMEM_BASE && i< LOMEM_BASE + LOMEM_SIZE)
- LM(vi, i) = val;
- else if(i >= HIMEM_BASE && i< HIMEM_BASE + HIMEM_SIZE)
- HM(vi, i) = val;
- else {
- ErrorF("Writing unmapped memory at 0x%08X\n", i);
- }
-}
-
-void
-Vm86WriteMemoryW(Vm86InfoPtr vi, U32 i, U16 val)
-{
- if(i >= MAGICMEM_BASE && i< MAGICMEM_BASE + MAGICMEM_SIZE)
- MMW(vi, i) = val;
- else if(i >= LOMEM_BASE && i< LOMEM_BASE + LOMEM_SIZE)
- LMW(vi, i) = val;
- else if(i >= HIMEM_BASE && i< HIMEM_BASE + HIMEM_SIZE)
- HMW(vi, i) = val;
- else {
- ErrorF("Writing unmapped memory at 0x%08X\n", i);
- }
-}
-
-void
-Vm86WriteMemoryL(Vm86InfoPtr vi, U32 i, U32 val)
-{
- if(i >= MAGICMEM_BASE && i< MAGICMEM_BASE + MAGICMEM_SIZE)
- MML(vi, i) = val;
- else if(i >= LOMEM_BASE && i< LOMEM_BASE + LOMEM_SIZE)
- LML(vi, i) = val;
- else if(i >= HIMEM_BASE && i< HIMEM_BASE + HIMEM_SIZE)
- HML(vi, i) = val;
- else {
- ErrorF("Writing unmapped memory at 0x%08X\n", i);
- }
-}
-
-int
-Vm86AllocateMemory(Vm86InfoPtr vi, int n)
-{
- int ret;
- if(n<0) {
- ErrorF("Asked to allocate negative amount of memory\n");
- return vi->brk;
- }
-
- n = (n + 15) & ~15;
- if(vi->brk + n > LOMEM_BASE + LOMEM_SIZE) {
- ErrorF("Out of low memory\n");
- exit(2);
- }
- ret = vi->brk;
- vi->brk += n;
- return ret;
-}
-
-int
-Vm86MarkMemory (Vm86InfoPtr vi)
-{
- return vi->brk;
-}
-
-void
-Vm86ReleaseMemory (Vm86InfoPtr vi, int mark)
-{
- vi->brk = mark;
-}
-
-static int
-vm86old(struct vm86_struct *vm)
-{
- int res;
-
- asm volatile (
- "pushl %%ebx\n\t"
- "movl %2, %%ebx\n\t"
- "movl %1,%%eax\n\t"
- "int $0x80\n\t"
- "popl %%ebx"
- : "=a" (res) : "n" (113), "r" (vm));
- if(res < 0) {
- errno = -res;
- res = -1;
- } else
- errno = 0;
- return res;
-}
-
-void
-Vm86Debug(Vm86InfoPtr vi)
-{
- struct vm86_regs *regs = &vi->vms.regs;
- int i;
-
- ErrorF("eax=0x%08lX ebx=0x%08lX ecx=0x%08lX edx=0x%08lX\n",
- regs->eax, regs->ebx, regs->ecx, regs->edx);
- ErrorF("esi=0x%08lX edi=0x%08lX ebp=0x%08lX\n",
- regs->esi, regs->edi, regs->ebp);
- ErrorF("eip=0x%08lX esp=0x%08lX eflags=0x%08lX\n",
- regs->eip, regs->esp, regs->eflags);
- ErrorF("cs=0x%04lX ds=0x%04lX es=0x%04lX fs=0x%04lX gs=0x%04lX\n",
- regs->cs, regs->ds, regs->es, regs->fs, regs->gs);
- for(i=-7; i<8; i++) {
- ErrorF(" %s%02X",
- i==0?"->":"",
- Vm86Memory(vi, MAKE_POINTER(regs->cs, regs->eip + i)));
- }
- ErrorF("\n");
-}
-
-#ifdef NOT_IN_X_SERVER
-static void
-ErrorF(char *f, ...)
-{
- va_list args;
- va_start(args, f);
- vfprintf(stderr, f, args);
- va_end(args);
-}
-#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-28 18:15:02 +0000