+++ /dev/null
-/*
- * Common Trace Format
- *
- * Integers read/write functions.
- *
- * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
- *
- * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * 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.
- */
-
-#include <babeltrace/ctf/types.h>
-#include <babeltrace/bitfield.h>
-#include <stdint.h>
-#include <glib.h>
-#include <babeltrace/endian.h>
-
-/*
- * The aligned read/write functions are expected to be faster than the
- * bitfield variants. They will be enabled eventually as an
- * optimisation.
- */
-
-static
-int _aligned_integer_read(struct bt_stream_pos *ppos,
- struct bt_definition *definition)
-{
- struct definition_integer *integer_definition =
- container_of(definition, struct definition_integer, p);
- const struct declaration_integer *integer_declaration =
- integer_definition->declaration;
- struct ctf_stream_pos *pos = ctf_pos(ppos);
- int rbo = (integer_declaration->byte_order != BYTE_ORDER); /* reverse byte order */
-
- if (!ctf_align_pos(pos, integer_declaration->p.alignment))
- return -EFAULT;
-
- if (!ctf_pos_access_ok(pos, integer_declaration->len))
- return -EFAULT;
-
- assert(!(pos->offset % CHAR_BIT));
- if (!integer_declaration->signedness) {
- switch (integer_declaration->len) {
- case 8:
- {
- uint8_t v;
-
- memcpy(&v, ctf_get_pos_addr(pos), sizeof(v));
- integer_definition->value._unsigned = v;
- break;
- }
- case 16:
- {
- uint16_t v;
-
- memcpy(&v, ctf_get_pos_addr(pos), sizeof(v));
- integer_definition->value._unsigned =
- rbo ? GUINT16_SWAP_LE_BE(v) : v;
- break;
- }
- case 32:
- {
- uint32_t v;
-
- memcpy(&v, ctf_get_pos_addr(pos), sizeof(v));
- integer_definition->value._unsigned =
- rbo ? GUINT32_SWAP_LE_BE(v) : v;
- break;
- }
- case 64:
- {
- uint64_t v;
-
- memcpy(&v, ctf_get_pos_addr(pos), sizeof(v));
- integer_definition->value._unsigned =
- rbo ? GUINT64_SWAP_LE_BE(v) : v;
- break;
- }
- default:
- assert(0);
- }
- } else {
- switch (integer_declaration->len) {
- case 8:
- {
- int8_t v;
-
- memcpy(&v, ctf_get_pos_addr(pos), sizeof(v));
- integer_definition->value._signed = v;
- break;
- }
- case 16:
- {
- int16_t v;
-
- memcpy(&v, ctf_get_pos_addr(pos), sizeof(v));
- integer_definition->value._signed =
- rbo ? (int16_t) GUINT16_SWAP_LE_BE(v) : v;
- break;
- }
- case 32:
- {
- int32_t v;
-
- memcpy(&v, ctf_get_pos_addr(pos), sizeof(v));
- integer_definition->value._signed =
- rbo ? (int32_t) GUINT32_SWAP_LE_BE(v) : v;
- break;
- }
- case 64:
- {
- int64_t v;
-
- memcpy(&v, ctf_get_pos_addr(pos), sizeof(v));
- integer_definition->value._signed =
- rbo ? (int64_t) GUINT64_SWAP_LE_BE(v) : v;
- break;
- }
- default:
- assert(0);
- }
- }
- if (!ctf_move_pos(pos, integer_declaration->len))
- return -EFAULT;
- return 0;
-}
-
-static
-int _aligned_integer_write(struct bt_stream_pos *ppos,
- struct bt_definition *definition)
-{
- struct definition_integer *integer_definition =
- container_of(definition, struct definition_integer, p);
- const struct declaration_integer *integer_declaration =
- integer_definition->declaration;
- struct ctf_stream_pos *pos = ctf_pos(ppos);
- int rbo = (integer_declaration->byte_order != BYTE_ORDER); /* reverse byte order */
-
- if (!ctf_align_pos(pos, integer_declaration->p.alignment))
- return -EFAULT;
-
- if (!ctf_pos_access_ok(pos, integer_declaration->len))
- return -EFAULT;
-
- assert(!(pos->offset % CHAR_BIT));
- if (pos->dummy)
- goto end;
- if (!integer_declaration->signedness) {
- switch (integer_declaration->len) {
- case 8:
- {
- uint8_t v = integer_definition->value._unsigned;
-
- memcpy(ctf_get_pos_addr(pos), &v, sizeof(v));
- break;
- }
- case 16:
- {
- uint16_t v = integer_definition->value._unsigned;
-
- if (rbo)
- v = GUINT16_SWAP_LE_BE(v);
- memcpy(ctf_get_pos_addr(pos), &v, sizeof(v));
- break;
- }
- case 32:
- {
- uint32_t v = integer_definition->value._unsigned;
-
- if (rbo)
- v = GUINT32_SWAP_LE_BE(v);
- memcpy(ctf_get_pos_addr(pos), &v, sizeof(v));
- break;
- }
- case 64:
- {
- uint64_t v = integer_definition->value._unsigned;
-
- if (rbo)
- v = GUINT64_SWAP_LE_BE(v);
- memcpy(ctf_get_pos_addr(pos), &v, sizeof(v));
- break;
- }
- default:
- assert(0);
- }
- } else {
- switch (integer_declaration->len) {
- case 8:
- {
- uint8_t v = integer_definition->value._signed;
-
- memcpy(ctf_get_pos_addr(pos), &v, sizeof(v));
- break;
- }
- case 16:
- {
- int16_t v = integer_definition->value._signed;
-
- if (rbo)
- v = GUINT16_SWAP_LE_BE(v);
- memcpy(ctf_get_pos_addr(pos), &v, sizeof(v));
- break;
- }
- case 32:
- {
- int32_t v = integer_definition->value._signed;
-
- if (rbo)
- v = GUINT32_SWAP_LE_BE(v);
- memcpy(ctf_get_pos_addr(pos), &v, sizeof(v));
- break;
- }
- case 64:
- {
- int64_t v = integer_definition->value._signed;
-
- if (rbo)
- v = GUINT64_SWAP_LE_BE(v);
- memcpy(ctf_get_pos_addr(pos), &v, sizeof(v));
- break;
- }
- default:
- assert(0);
- }
- }
-end:
- if (!ctf_move_pos(pos, integer_declaration->len))
- return -EFAULT;
- return 0;
-}
-
-int ctf_integer_read(struct bt_stream_pos *ppos, struct bt_definition *definition)
-{
- struct definition_integer *integer_definition =
- container_of(definition, struct definition_integer, p);
- const struct declaration_integer *integer_declaration =
- integer_definition->declaration;
- struct ctf_stream_pos *pos = ctf_pos(ppos);
-
- if (!(integer_declaration->p.alignment % CHAR_BIT)
- && !(integer_declaration->len % CHAR_BIT)) {
- return _aligned_integer_read(ppos, definition);
- }
-
- if (!ctf_align_pos(pos, integer_declaration->p.alignment))
- return -EFAULT;
-
- if (!ctf_pos_access_ok(pos, integer_declaration->len))
- return -EFAULT;
-
- if (!integer_declaration->signedness) {
- if (integer_declaration->byte_order == LITTLE_ENDIAN)
- bt_bitfield_read_le(mmap_align_addr(pos->base_mma) +
- pos->mmap_base_offset, unsigned char,
- pos->offset, integer_declaration->len,
- &integer_definition->value._unsigned);
- else
- bt_bitfield_read_be(mmap_align_addr(pos->base_mma) +
- pos->mmap_base_offset, unsigned char,
- pos->offset, integer_declaration->len,
- &integer_definition->value._unsigned);
- } else {
- if (integer_declaration->byte_order == LITTLE_ENDIAN)
- bt_bitfield_read_le(mmap_align_addr(pos->base_mma) +
- pos->mmap_base_offset, unsigned char,
- pos->offset, integer_declaration->len,
- &integer_definition->value._signed);
- else
- bt_bitfield_read_be(mmap_align_addr(pos->base_mma) +
- pos->mmap_base_offset, unsigned char,
- pos->offset, integer_declaration->len,
- &integer_definition->value._signed);
- }
- if (!ctf_move_pos(pos, integer_declaration->len))
- return -EFAULT;
- return 0;
-}
-
-int ctf_integer_write(struct bt_stream_pos *ppos, struct bt_definition *definition)
-{
- struct definition_integer *integer_definition =
- container_of(definition, struct definition_integer, p);
- const struct declaration_integer *integer_declaration =
- integer_definition->declaration;
- struct ctf_stream_pos *pos = ctf_pos(ppos);
-
- if (!(integer_declaration->p.alignment % CHAR_BIT)
- && !(integer_declaration->len % CHAR_BIT)) {
- return _aligned_integer_write(ppos, definition);
- }
-
- if (!ctf_align_pos(pos, integer_declaration->p.alignment))
- return -EFAULT;
-
- if (!ctf_pos_access_ok(pos, integer_declaration->len))
- return -EFAULT;
-
- if (pos->dummy)
- goto end;
- if (!integer_declaration->signedness) {
- if (integer_declaration->byte_order == LITTLE_ENDIAN)
- bt_bitfield_write_le(mmap_align_addr(pos->base_mma) +
- pos->mmap_base_offset, unsigned char,
- pos->offset, integer_declaration->len,
- integer_definition->value._unsigned);
- else
- bt_bitfield_write_be(mmap_align_addr(pos->base_mma) +
- pos->mmap_base_offset, unsigned char,
- pos->offset, integer_declaration->len,
- integer_definition->value._unsigned);
- } else {
- if (integer_declaration->byte_order == LITTLE_ENDIAN)
- bt_bitfield_write_le(mmap_align_addr(pos->base_mma) +
- pos->mmap_base_offset, unsigned char,
- pos->offset, integer_declaration->len,
- integer_definition->value._signed);
- else
- bt_bitfield_write_be(mmap_align_addr(pos->base_mma) +
- pos->mmap_base_offset, unsigned char,
- pos->offset, integer_declaration->len,
- integer_definition->value._signed);
- }
-end:
- if (!ctf_move_pos(pos, integer_declaration->len))
- return -EFAULT;
- return 0;
-}
projects / babeltrace.git / blobdiff