mirror of
https://github.com/Telecominfraproject/OpenCellular.git
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0c3ba249ab
This reduces the number of exported header files to the minimum needed by
the existing userspace utilities and firmware implementations.
BUG=chromium:221544
BRANCH=none
TEST=manual, trybots
CQ-DEPEND=CL:47019,CL:47022,CL:47023
sudo FEATURES=test emerge vboot_reference
FEATURES=test emerge-$BOARD \
vboot_reference \
chromeos-cryptohome \
chromeos-installer \
chromeos-u-boot \
peach-u-boot \
depthcharge
Change-Id: I2946cc2dbaf5459a6c5eca92ca57d546498e6d85
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/47021
Reviewed-by: Randall Spangler <rspangler@chromium.org>
75 lines
1.7 KiB
C
75 lines
1.7 KiB
C
/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*
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* Implementations of stateful memory operations.
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*/
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#include "sysincludes.h"
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#include "stateful_util.h"
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#include "utility.h"
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void StatefulInit(MemcpyState *state, void *buf, uint64_t len)
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{
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state->remaining_buf = buf;
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state->remaining_len = len;
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state->overrun = 0;
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}
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void *StatefulSkip(MemcpyState *state, uint64_t len)
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{
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if (state->overrun)
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return NULL;
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if (len > state->remaining_len) {
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state->overrun = 1;
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return NULL;
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}
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state->remaining_buf += len;
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state->remaining_len -= len;
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return state; /* Must return something non-NULL. */
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}
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void *StatefulMemcpy(MemcpyState *state, void *dst, uint64_t len)
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{
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if (state->overrun)
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return NULL;
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if (len > state->remaining_len) {
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state->overrun = 1;
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return NULL;
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}
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Memcpy(dst, state->remaining_buf, len);
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state->remaining_buf += len;
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state->remaining_len -= len;
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return dst;
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}
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const void *StatefulMemcpy_r(MemcpyState *state, const void *src, uint64_t len)
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{
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if (state->overrun)
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return NULL;
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if (len > state->remaining_len) {
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state->overrun = 1;
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return NULL;
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}
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Memcpy(state->remaining_buf, src, len);
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state->remaining_buf += len;
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state->remaining_len -= len;
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return src;
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}
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const void *StatefulMemset_r(MemcpyState *state, const uint8_t val,
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uint64_t len)
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{
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if (state->overrun)
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return NULL;
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if (len > state->remaining_len) {
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state->overrun = 1;
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return NULL;
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}
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Memset(state->remaining_buf, val, len);
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state->remaining_buf += len;
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state->remaining_len -= len;
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return state; /* Must return something non-NULL. */
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}
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