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Diffstat (limited to 'qemu/tests/tcg/runcom.c')
-rw-r--r--qemu/tests/tcg/runcom.c192
1 files changed, 0 insertions, 192 deletions
diff --git a/qemu/tests/tcg/runcom.c b/qemu/tests/tcg/runcom.c
deleted file mode 100644
index d60342bfc..000000000
--- a/qemu/tests/tcg/runcom.c
+++ /dev/null
@@ -1,192 +0,0 @@
-/*
- * Simple example of use of vm86: launch a basic .com DOS executable
- */
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <inttypes.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <sys/mman.h>
-#include <signal.h>
-
-#include <linux/unistd.h>
-#include <asm/vm86.h>
-
-extern int vm86 (unsigned long int subfunction,
- struct vm86plus_struct *info);
-
-#define VIF_MASK 0x00080000
-
-//#define SIGTEST
-
-#define COM_BASE_ADDR 0x10100
-
-static void usage(void)
-{
- printf("runcom version 0.1 (c) 2003 Fabrice Bellard\n"
- "usage: runcom file.com\n"
- "VM86 Run simple .com DOS executables (linux vm86 test mode)\n");
- exit(1);
-}
-
-static inline void set_bit(uint8_t *a, unsigned int bit)
-{
- a[bit / 8] |= (1 << (bit % 8));
-}
-
-static inline uint8_t *seg_to_linear(unsigned int seg, unsigned int reg)
-{
- return (uint8_t *)((seg << 4) + (reg & 0xffff));
-}
-
-static inline void pushw(struct vm86_regs *r, int val)
-{
- r->esp = (r->esp & ~0xffff) | ((r->esp - 2) & 0xffff);
- *(uint16_t *)seg_to_linear(r->ss, r->esp) = val;
-}
-
-void dump_regs(struct vm86_regs *r)
-{
- fprintf(stderr,
- "EAX=%08lx EBX=%08lx ECX=%08lx EDX=%08lx\n"
- "ESI=%08lx EDI=%08lx EBP=%08lx ESP=%08lx\n"
- "EIP=%08lx EFL=%08lx\n"
- "CS=%04x DS=%04x ES=%04x SS=%04x FS=%04x GS=%04x\n",
- r->eax, r->ebx, r->ecx, r->edx, r->esi, r->edi, r->ebp, r->esp,
- r->eip, r->eflags,
- r->cs, r->ds, r->es, r->ss, r->fs, r->gs);
-}
-
-#ifdef SIGTEST
-void alarm_handler(int sig)
-{
- fprintf(stderr, "alarm signal=%d\n", sig);
- alarm(1);
-}
-#endif
-
-int main(int argc, char **argv)
-{
- uint8_t *vm86_mem;
- const char *filename;
- int fd, ret, seg;
- struct vm86plus_struct ctx;
- struct vm86_regs *r;
-
- if (argc != 2)
- usage();
- filename = argv[1];
-
- vm86_mem = mmap((void *)0x00000000, 0x110000,
- PROT_WRITE | PROT_READ | PROT_EXEC,
- MAP_FIXED | MAP_ANON | MAP_PRIVATE, -1, 0);
- if (vm86_mem == MAP_FAILED) {
- perror("mmap");
- exit(1);
- }
-#ifdef SIGTEST
- {
- struct sigaction act;
-
- act.sa_handler = alarm_handler;
- sigemptyset(&act.sa_mask);
- act.sa_flags = 0;
- sigaction(SIGALRM, &act, NULL);
- alarm(1);
- }
-#endif
-
- /* load the MSDOS .com executable */
- fd = open(filename, O_RDONLY);
- if (fd < 0) {
- perror(filename);
- exit(1);
- }
- ret = read(fd, vm86_mem + COM_BASE_ADDR, 65536 - 256);
- if (ret < 0) {
- perror("read");
- exit(1);
- }
- close(fd);
-
- memset(&ctx, 0, sizeof(ctx));
- /* init basic registers */
- r = &ctx.regs;
- r->eip = 0x100;
- r->esp = 0xfffe;
- seg = (COM_BASE_ADDR - 0x100) >> 4;
- r->cs = seg;
- r->ss = seg;
- r->ds = seg;
- r->es = seg;
- r->fs = seg;
- r->gs = seg;
- r->eflags = VIF_MASK;
-
- /* put return code */
- set_bit((uint8_t *)&ctx.int_revectored, 0x21);
- *seg_to_linear(r->cs, 0) = 0xb4; /* mov ah, $0 */
- *seg_to_linear(r->cs, 1) = 0x00;
- *seg_to_linear(r->cs, 2) = 0xcd; /* int $0x21 */
- *seg_to_linear(r->cs, 3) = 0x21;
- pushw(&ctx.regs, 0x0000);
-
- /* the value of these registers seem to be assumed by pi_10.com */
- r->esi = 0x100;
- r->ecx = 0xff;
- r->ebp = 0x0900;
- r->edi = 0xfffe;
-
- for(;;) {
- ret = vm86(VM86_ENTER, &ctx);
- switch(VM86_TYPE(ret)) {
- case VM86_INTx:
- {
- int int_num, ah;
-
- int_num = VM86_ARG(ret);
- if (int_num != 0x21)
- goto unknown_int;
- ah = (r->eax >> 8) & 0xff;
- switch(ah) {
- case 0x00: /* exit */
- exit(0);
- case 0x02: /* write char */
- {
- uint8_t c = r->edx;
- write(1, &c, 1);
- }
- break;
- case 0x09: /* write string */
- {
- uint8_t c;
- for(;;) {
- c = *seg_to_linear(r->ds, r->edx);
- if (c == '$')
- break;
- write(1, &c, 1);
- }
- r->eax = (r->eax & ~0xff) | '$';
- }
- break;
- default:
- unknown_int:
- fprintf(stderr, "unsupported int 0x%02x\n", int_num);
- dump_regs(&ctx.regs);
- // exit(1);
- }
- }
- break;
- case VM86_SIGNAL:
- /* a signal came, we just ignore that */
- break;
- case VM86_STI:
- break;
- default:
- fprintf(stderr, "unhandled vm86 return code (0x%x)\n", ret);
- dump_regs(&ctx.regs);
- exit(1);
- }
- }
-}