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https://github.com/apache/nuttx.git
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libc:add parse_memory_range to parse memory string
Signed-off-by: anjiahao <anjiahao@xiaomi.com>
This commit is contained in:
anjiahao
Xiang Xiao
@@ -4584,3 +4584,14 @@ config BOARD_USBDEV_SERIALSTR
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default n
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---help---
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Use board unique serial number to iSerialNumber in the device descriptor.
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config BOARD_MEMORY_RANGE
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string "Board memory range"
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default ""
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---help---
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Memory range of board. format: <start>,<end>,<flags>,....
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start: start address of memory range
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end: end address of memory range
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flags: Readable 0x1, writable 0x2, executable 0x4
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example:0x1000,0x2000,0x1,0x2000,0x3000,0x3,0x3000,0x4000,0x7
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@@ -32,6 +32,7 @@
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#include <nuttx/sched.h>
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#include <nuttx/streams.h>
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#include <nuttx/memoryregion.h>
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/****************************************************************************
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* Pre-processor Definitions
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@@ -111,15 +112,6 @@ struct binary_s
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CODE int (*unload)(FAR struct binary_s *bin);
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};
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/* This describes binfmt coredump filed */
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struct memory_region_s
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{
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uintptr_t start; /* Start address of this region */
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uintptr_t end; /* End address of this region */
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uint32_t flags; /* Figure 5-3: Segment Flag Bits: PF_[X|W|R] */
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};
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/* This describes one binary format handler */
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struct binfmt_s
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@@ -0,0 +1,66 @@
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/****************************************************************************
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* include/nuttx/memoryregion.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __INCLUDE_MEMORYREGION_H
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#define __INCLUDE_MEMORYREGION_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <stddef.h>
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/* This describes binfmt coredump filed */
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struct memory_region_s
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{
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uintptr_t start; /* Start address of this region */
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uintptr_t end; /* End address of this region */
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uint32_t flags; /* Figure 5-3: Segment Flag Bits: PF_[X|W|R] */
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};
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/****************************************************************************
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* Public Function
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****************************************************************************/
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/****************************************************************************
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* Name: parse_memory_region
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*
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* Input Parameters:
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* format - The format string to parse. <start>,<end>,<flags>,...
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* start - The start address of the memory region
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* end - The end address of the memory region
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* flags - Readable 0x1, writable 0x2, executable 0x4
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* region - The memory region to populate
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* num - The number of memory regions to parse
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*
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* example: 0x1000,0x2000,0x1,0x2000,0x3000,0x3,0x3000,0x4000,0x7
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*
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****************************************************************************/
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ssize_t parse_memory_region(FAR const char *format,
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FAR struct memory_region_s *region,
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size_t num);
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#endif /* __INCLUDE_MEMORYREGION_H */
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@@ -40,7 +40,8 @@ list(
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lib_getfullpath.c
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lib_openat.c
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lib_mkdirat.c
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lib_utimensat.c)
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lib_utimensat.c
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lib_memoryregion.c)
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# Support for platforms that do not have long long types
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@@ -24,7 +24,7 @@ CSRCS += lib_mknod.c lib_umask.c lib_utsname.c lib_getrandom.c
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CSRCS += lib_xorshift128.c lib_tea_encrypt.c lib_tea_decrypt.c
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CSRCS += lib_cxx_initialize.c lib_impure.c lib_memfd.c lib_mutex.c
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CSRCS += lib_fchmodat.c lib_fstatat.c lib_getfullpath.c lib_openat.c
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CSRCS += lib_mkdirat.c lib_utimensat.c lib_mallopt.c
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CSRCS += lib_mkdirat.c lib_utimensat.c lib_mallopt.c lib_memoryregion.c
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# Support for platforms that do not have long long types
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@@ -0,0 +1,80 @@
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/****************************************************************************
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* libs/libc/misc/lib_memoryregion.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/memoryregion.h>
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#include <stdlib.h>
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#include <errno.h>
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: parse_memory_region
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*
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* Input Parameters:
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* format - The format string to parse. <start>,<end>,<flags>,...
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* start - The start address of the memory region
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* end - The end address of the memory region
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* flags - Readable 0x1, writable 0x2, executable 0x4
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* region - The memory region to populate
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* num - The number of memory regions to parse
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*
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* example: 0x1000,0x2000,0x1,0x2000,0x3000,0x3,0x3000,0x4000,0x7
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*
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****************************************************************************/
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ssize_t parse_memory_region(FAR const char *format,
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FAR struct memory_region_s *region,
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size_t num)
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{
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FAR char *endptr;
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size_t i = 0;
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if (format == NULL || region == NULL || num == 0)
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{
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return -EINVAL;
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}
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while (*format != '\0' && i < num * 3)
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{
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if (i % 3 == 0)
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{
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region[i / 3].start = strtoul(format, &endptr, 0);
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}
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else if (i % 3 == 1)
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{
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region[i / 3].end = strtoul(format, &endptr, 0);
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}
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else if (i % 3 == 2)
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{
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region[i / 3].flags = strtoul(format, &endptr, 0);
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}
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format = endptr + 1;
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i++;
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}
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return i / 3;
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}
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