/* * Generic thunking code to convert data between host and target CPU * * Copyright (c) 2003 Fabrice Bellard * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include #include #include #include "qemu.h" #include "thunk.h" //#define DEBUG #define MAX_STRUCTS 128 /* XXX: make it dynamic */ StructEntry struct_entries[MAX_STRUCTS]; static inline const argtype *thunk_type_next(const argtype *type_ptr) { int type; type = *type_ptr++; switch(type) { case TYPE_CHAR: case TYPE_SHORT: case TYPE_INT: case TYPE_LONGLONG: case TYPE_ULONGLONG: case TYPE_LONG: case TYPE_ULONG: case TYPE_PTRVOID: return type_ptr; case TYPE_PTR: return thunk_type_next(type_ptr); case TYPE_ARRAY: return thunk_type_next(type_ptr + 1); case TYPE_STRUCT: return type_ptr + 1; default: return NULL; } } void thunk_register_struct(int id, const char *name, const argtype *types) { const argtype *type_ptr; StructEntry *se; int nb_fields, offset, max_align, align, size, i, j; se = struct_entries + id; /* first we count the number of fields */ type_ptr = types; nb_fields = 0; while (*type_ptr != TYPE_NULL) { type_ptr = thunk_type_next(type_ptr); nb_fields++; } se->field_types = types; se->nb_fields = nb_fields; se->name = name; #ifdef DEBUG printf("struct %s: id=%d nb_fields=%d\n", se->name, id, se->nb_fields); #endif /* now we can alloc the data */ for(i = 0;i < 2; i++) { offset = 0; max_align = 1; se->field_offsets[i] = malloc(nb_fields * sizeof(int)); type_ptr = se->field_types; for(j = 0;j < nb_fields; j++) { size = thunk_type_size(type_ptr, i); align = thunk_type_align(type_ptr, i); offset = (offset + align - 1) & ~(align - 1); se->field_offsets[i][j] = offset; offset += size; if (align > max_align) max_align = align; type_ptr = thunk_type_next(type_ptr); } offset = (offset + max_align - 1) & ~(max_align - 1); se->size[i] = offset; se->align[i] = max_align; #ifdef DEBUG printf("%s: size=%d align=%d\n", i == THUNK_HOST ? "host" : "target", offset, max_align); #endif } } void thunk_register_struct_direct(int id, const char *name, StructEntry *se1) { StructEntry *se; se = struct_entries + id; *se = *se1; se->name = name; } /* now we can define the main conversion functions */ const argtype *thunk_convert(void *dst, const void *src, const argtype *type_ptr, int to_host) { int type; type = *type_ptr++; switch(type) { case TYPE_CHAR: *(uint8_t *)dst = *(uint8_t *)src; break; case TYPE_SHORT: *(uint16_t *)dst = tswap16(*(uint16_t *)src); break; case TYPE_INT: *(uint32_t *)dst = tswap32(*(uint32_t *)src); break; case TYPE_LONGLONG: case TYPE_ULONGLONG: *(uint64_t *)dst = tswap64(*(uint64_t *)src); break; #if HOST_LONG_BITS == 32 && TARGET_LONG_BITS == 32 case TYPE_LONG: case TYPE_ULONG: case TYPE_PTRVOID: *(uint32_t *)dst = tswap32(*(uint32_t *)src); break; #elif HOST_LONG_BITS == 64 && TARGET_LONG_BITS == 32 case TYPE_LONG: case TYPE_ULONG: case TYPE_PTRVOID: if (to_host) { *(uint64_t *)dst = tswap32(*(uint32_t *)src); } else { *(uint32_t *)dst = tswap32(*(uint64_t *)src & 0xffffffff); } break; #else #warning unsupported conversion #endif case TYPE_ARRAY: { int array_length, i, dst_size, src_size; const uint8_t *s; uint8_t *d; array_length = *type_ptr++; dst_size = thunk_type_size(type_ptr, to_host); src_size = thunk_type_size(type_ptr, 1 - to_host); d = dst; s = src; for(i = 0;i < array_length; i++) { thunk_convert(d, s, type_ptr, to_host); d += dst_size; s += src_size; } type_ptr = thunk_type_next(type_ptr); } break; case TYPE_STRUCT: { int i; const StructEntry *se; const uint8_t *s; uint8_t *d; const argtype *field_types; const int *dst_offsets, *src_offsets; se = struct_entries + *type_ptr++; if (se->convert[0] != NULL) { /* specific conversion is needed */ (*se->convert[to_host])(dst, src); } else { /* standard struct conversion */ field_types = se->field_types; dst_offsets = se->field_offsets[to_host]; src_offsets = se->field_offsets[1 - to_host]; d = dst; s = src; for(i = 0;i < se->nb_fields; i++) { field_types = thunk_convert(d + dst_offsets[i], s + src_offsets[i], field_types, to_host); } } } break; default: fprintf(stderr, "Invalid type 0x%x\n", type); break; } return type_ptr; } /* from em86 */ /* Utility function: Table-driven functions to translate bitmasks * between X86 and Alpha formats... */ unsigned int target_to_host_bitmask(unsigned int x86_mask, bitmask_transtbl * trans_tbl) { bitmask_transtbl * btp; unsigned int alpha_mask = 0; for(btp = trans_tbl; btp->x86_mask && btp->alpha_mask; btp++) { if((x86_mask & btp->x86_mask) == btp->x86_bits) { alpha_mask |= btp->alpha_bits; } } return(alpha_mask); } unsigned int host_to_target_bitmask(unsigned int alpha_mask, bitmask_transtbl * trans_tbl) { bitmask_transtbl * btp; unsigned int x86_mask = 0; for(btp = trans_tbl; btp->x86_mask && btp->alpha_mask; btp++) { if((alpha_mask & btp->alpha_mask) == btp->alpha_bits) { x86_mask |= btp->x86_bits; } 
/*
             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 Descriptors.c.
 */

#ifndef _DESCRIPTORS_H_
#define _DESCRIPTORS_H_

	/* Includes: */
		#include <avr/pgmspace.h>

		#include <LUFA/Drivers/USB/USB.h>

	/* Macros: */
		/** Endpoint address of the CDC device-to-host notification IN endpoint. */
		#define CDC_NOTIFICATION_EPADDR        (ENDPOINT_DIR_IN  | 2)

		/** Endpoint address of the CDC device-to-host data IN endpoint. */
		#define CDC_TX_EPADDR                  (ENDPOINT_DIR_IN  | 3)

		/** Endpoint address of the CDC host-to-device data OUT endpoint. */
		#define CDC_RX_EPADDR                  (ENDPOINT_DIR_OUT | 4)

		/** Size in bytes of the CDC device-to-host notification IN endpoint. */
		#define CDC_NOTIFICATION_EPSIZE        8

		/** Size in bytes of the CDC data IN and OUT endpoints. */
		#define CDC_TXRX_EPSIZE                16

	/* Type Defines: */
		/** Type define for the device configuration descriptor structure. This must be defined in the
		 *  application code, as the configuration descriptor contains several sub-descriptors which
		 *  vary between devices, and which describe the device's usage to the host.
		 */
		typedef struct
		{
			USB_Descriptor_Configuration_Header_t    Config;

			// CDC Command Interface
			USB_Descriptor_Interface_t               CDC_CCI_Interface;
			USB_CDC_Descriptor_FunctionalHeader_t    CDC_Functional_Header;
			USB_CDC_Descriptor_FunctionalACM_t       CDC_Functional_ACM;
			USB_CDC_Descriptor_FunctionalUnion_t     CDC_Functional_Union;
			USB_Descriptor_Endpoint_t                CDC_NotificationEndpoint;

			// CDC Data Interface
			USB_Descriptor_Interface_t               CDC_DCI_Interface;
			USB_Descriptor_Endpoint_t                CDC_DataOutEndpoint;
			USB_Descriptor_Endpoint_t                CDC_DataInEndpoint;
		} USB_Descriptor_Configuration_t;

		/** Enum for the device interface descriptor IDs within the device. Each interface descriptor
		 *  should have a unique ID index associated with it, which can be used to refer to the
		 *  interface from other descriptors.
		 */
		enum InterfaceDescriptors_t
		{
			INTERFACE_ID_CDC_CCI = 0, /**< CDC CCI interface descriptor ID */
			INTERFACE_ID_CDC_DCI = 1, /**< CDC DCI interface descriptor ID */
		};

		/** Enum for the device string descriptor IDs within the device. Each string descriptor should
		 *  have a unique ID index associated with it, which can be used to refer to the string from
		 *  other descriptors.
		 */
		enum StringDescriptors_t
		{
			STRING_ID_Language     = 0, /**< Supported Languages string descriptor ID (must be zero) */
			STRING_ID_Manufacturer = 1, /**< Manufacturer string ID */
			STRING_ID_Product      = 2, /**< Product string ID */
		};

	/* Function Prototypes: */
		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
		                                    const uint16_t wIndex,
		                                    const void** const DescriptorAddress)
		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);

#endif
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