/* * Example of use of user mode libqemu: launch a basic .com DOS * executable */ #include #include #include #include #include #include #include #include #include #include "cpu.h" //#define SIGTEST void cpu_outb(CPUState *env, int addr, int val) { fprintf(stderr, "outb: port=0x%04x, data=%02x\n", addr, val); } void cpu_outw(CPUState *env, int addr, int val) { fprintf(stderr, "outw: port=0x%04x, data=%04x\n", addr, val); } void cpu_outl(CPUState *env, int addr, int val) { fprintf(stderr, "outl: port=0x%04x, data=%08x\n", addr, val); } int cpu_inb(CPUState *env, int addr) { fprintf(stderr, "inb: port=0x%04x\n", addr); return 0; } int cpu_inw(CPUState *env, int addr) { fprintf(stderr, "inw: port=0x%04x\n", addr); return 0; } int cpu_inl(CPUState *env, int addr) { fprintf(stderr, "inl: port=0x%04x\n", addr); return 0; } int cpu_get_pic_interrupt(CPUState *env) { return -1; } uint64_t cpu_get_tsc(CPUState *env) { return 0; } static void set_gate(void *ptr, unsigned int type, unsigned int dpl, unsigned long addr, unsigned int sel) { unsigned int e1, e2; e1 = (addr & 0xffff) | (sel << 16); e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); stl((uint8_t *)ptr, e1); stl((uint8_t *)ptr + 4, e2); } uint64_t idt_table[256]; /* only dpl matters as we do only user space emulation */ static void set_idt(int n, unsigned int dpl) { set_gate(idt_table + n, 0, dpl, 0, 0); } void qemu_free(void *ptr) { free(ptr); } void *qemu_malloc(size_t size) { return malloc(size); } void *qemu_mallocz(size_t size) { void *ptr; ptr = qemu_malloc(size); if (!ptr) return NULL; memset(ptr, 0, size); return ptr; } void *qemu_vmalloc(size_t size) { return memalign(4096, size); } void qemu_vfree(void *ptr) { free(ptr); } void qemu_printf(const char *fmt, ...) { va_list ap; va_start(ap, fmt); vprintf(fmt, ap); va_end(ap); } /* XXX: this is a bug in helper2.c */ int errno; /**********************************************/ #define COM_BASE_ADDR 0x10100 void usage(void) { printf("qruncom version 0.1 (c) 2003 Fabrice Bellard\n" "usage: qruncom file.com\n" "user mode libqemu demo: run simple .com DOS executables\n"); exit(1); } static inline uint8_t *seg_to_linear(unsigned int seg, unsigned int reg) { return (uint8_t *)((seg << 4) + (reg & 0xffff)); } static inline void pushw(CPUState *env, int val) { env->regs[R_ESP] = (env->regs[R_ESP] & ~0xffff) | ((env->regs[R_ESP] - 2) & 0xffff); *(uint16_t *)seg_to_linear(env->segs[R_SS].selector, env->regs[R_ESP]) = val; } static void host_segv_handler(int host_signum, siginfo_t *info, void *puc) { if (cpu_signal_handler(host_signum, info, puc)) { return; } abort(); } int main(int argc, char **argv) { uint8_t *vm86_mem; const char *filename; int fd, ret, seg; CPUState *env; 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); } /* 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); /* install exception handler for CPU emulator */ { struct sigaction act; sigfillset(&act.sa_mask); act.sa_flags = SA_SIGINFO; // act.sa_flags |= SA_ONSTACK; act.sa_sigaction = host_segv_handler; sigaction(SIGSEGV, &act, NULL); sigaction(SIGBUS, &act, NULL); #if defined (TARGET_I386) && defined(USE_CODE_COPY) sigaction(SIGFPE, &act, NULL); #endif } // cpu_set_log(CPU_LOG_TB_IN_ASM | CPU_LOG_TB_OUT_ASM | CPU_LOG_EXEC); env = cpu_init(); /* disable code copy to simplify debugging */ code_copy_enabled = 0; /* set user mode state (XXX: should be done automatically by cpu_init ?) */ env->user_mode_only = 1; cpu_x86_set_cpl(env, 3); env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK; /* NOTE: hflags duplicates some of the virtual CPU state */ env->hflags |= HF_PE_MASK | VM_MASK; /* flags setup : we activate the IRQs by default as in user mode. We also activate the VM86 flag to run DOS code */ env->eflags |= IF_MASK | VM_MASK; /* init basic registers */ env->eip = 0x100; env->regs[R_ESP] = 0xfffe; seg = (COM_BASE_ADDR - 0x100) >> 4; cpu_x86_load_seg_cache(env, R_CS, seg, (seg << 4), 0xffff, 0); cpu_x86_load_seg_cache(env, R_SS, seg, (seg << 4), 0xffff, 0); cpu_x86_load_seg_cache(env, R_DS, seg, (seg << 4), 0xffff, 0); cpu_x86_load_seg_cache(env, R_ES, seg, (seg << 4), 0xffff, 0); cpu_x86_load_seg_cache(env, R_FS, seg, (seg << 4), 0xffff, 0); cpu_x86_load_seg_cache(env, R_GS, seg, (seg << 4), 0xffff, 0); /* exception support */ env->idt.base = (unsigned long)idt_table; env->idt.limit = sizeof(idt_table) - 1; set_idt(0, 0); set_idt(1, 0); set_idt(2, 0); set_idt(3, 3); set_idt(4, 3); set_idt(5, 3); set_idt(6, 0); set_idt(7, 0); set_idt(8, 0); set_idt(9, 0); set_idt(10, 0); set_idt(11, 0); set_idt(12, 0); set_idt(13, 0); set_idt(14, 0); set_idt(15, 0); set_idt(16, 0); set_idt(17, 0); set_idt(18, 0); set_idt(19, 0); /* put return code */ *seg_to_linear(env->segs[R_CS].selector, 0) = 0xb4; /* mov ah, $0 */ *seg_to_linear(env->segs[R_CS].selector, 1) = 0x00; *seg_to_linear(env->segs[R_CS].selector, 2) = 0xcd; /* int $0x21 */ *seg_to_linear(env->segs[R_CS].selector, 3) = 0x21; pushw(env, 0x0000); /* the value of these registers seem to be assumed by pi_10.com */ env->regs[R_ESI] = 0x100; env->regs[R_ECX] = 0xff; env->regs[R_EBP] = 0x0900; env->regs[R_EDI] = 0xfffe; /* inform the emulator of the mmaped memory */ page_set_flags(0x00000000, 0x110000, PAGE_WRITE | PAGE_READ | PAGE_EXEC | PAGE_VALID); for(;;) { ret = cpu_x86_exec(env); switch(ret) { case EXCP0D_GPF: { int int_num, ah; int_num = *(uint8_t *)(env->segs[R_CS].base + env->eip + 1); if (int_num != 0x21) goto unknown_int; 
/*
             LUFA Library
     Copyright (C) Dean Camera, 2017.

  dean [at] fourwalledcubicle [dot] com
           www.lufa-lib.org
*/

/*
  Copyright 2017  Dean Camera (dean [at] fourwalledcubicle [dot] com)

  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 the copyright notice and this
  permission notice and warranty disclaimer appear in supporting
  documentation, and that the name of the author not be used in
  advertising or publicity pertaining to distribution of the
  software without specific, written prior permission.

  The author disclaims all warranties with regard to this
  software, including all implied warranties of merchantability
  and fitness.  In no event shall the author 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.
*/

/** \file
 *
 *  Header file for VirtualSerialMouse.c.
 */

#ifndef _VIRTUALSERIAL_MOUSE_H_
#define _VIRTUALSERIAL_MOUSE_H_

	/* Includes: */
		#include <avr/io.h>
		#include <avr/wdt.h>
		#include <avr/power.h>
		#include <avr/interrupt.h>
		#include <string.h>

		#include "Descriptors.h"

		#include <LUFA/Drivers/Board/LEDs.h>
		#include <LUFA/Drivers/Board/Joystick.h>
		#include <LUFA/Drivers/Board/Buttons.h>
		#include <LUFA/Drivers/USB/USB.h>
		#include <LUFA/Platform/Platform.h>

	/* Macros: */
		/** LED mask for the library LED driver, to indicate that the USB interface is not ready. */
		#define LEDMASK_USB_NOTREADY      LEDS_LED1

		/** LED mask for the library LED driver, to indicate that the USB interface is enumerating. */
		#define LEDMASK_USB_ENUMERATING  (LEDS_LED2 | LEDS_LED3)

		/** LED mask for the library LED driver, to indicate that the USB interface is ready. */
		#define LEDMASK_USB_READY        (LEDS_LED2 | LEDS_LED4)

		/** LED mask for the library LED driver, to indicate that an error has occurred in the USB interface. */
		#define LEDMASK_USB_ERROR        (LEDS_LED1 | LEDS_LED3)

	/* Function Prototypes: */
		void SetupHardware(void);
		void CheckJoystickMovement(void);

		void EVENT_USB_Device_Connect(void);
		void EVENT_USB_Device_Disconnect(void);
		void EVENT_USB_Device_ConfigurationChanged(void);
		void EVENT_USB_Device_ControlRequest(void);
		void EVENT_USB_Device_StartOfFrame(void);

		bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo,
		                                         uint8_t* const ReportID,
		                                         const uint8_t ReportType,
		                                         void* ReportData,
		                                         uint16_t* const ReportSize);
		void CALLBACK_HID_Device_ProcessHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo,
		                                          const uint8_t ReportID,
		                                          const uint8_t ReportType,
		                                          const void* ReportData,
		                                          const uint16_t ReportSize);
#endif
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-30 15:29:19 +0000