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4940bb1051
[Problem Description] 1. When enabling RT_USING_MODULE=y, compilation warnings occur: dlelf.c:386:27: warning: cast from pointer to integer of different size dlelf.c:398:25: warning: cast from pointer to integer of different size dlelf.c:408:24: warning: cast from pointer to integer of different size 2. On RV64 architectures (e.g. Sophgo SG2042 with RISC-V Sv39 and 40-bit physical addressing), dlsym may fail when accessing addresses beyond 32-bit range. [Root Cause] In dlmodule_load_relocated_object() and dlmodule_symbol_find(), pointer is cast to rt_uint32_t which truncates: | rt_ubase_t rodata_addr = (rt_uint32_t)ptr; This causes: - Warnings on 64-bit systems (pointer width > 32-bit) - Actual address truncation on RV64 when physical address exceeds 32-bit [Solution] Replace rt_uint32_t with architecture-adaptive rt_ubase_t: | rt_ubase_t rodata_addr = (rt_ubase_t)ptr; The rt_ubase_t is defined in include/rttypes.h as: | #ifdef ARCH_CPU_64BIT | typedef rt_uint64_t rt_ubase_t; | #else | typedef rt_uint32_t rt_ubase_t; | #endif This ensures correct width casting for both 32/64-bit architectures. Signed-off-by: Liu Gui <kenneth.liu@sophgo.com>
88 lines
2.5 KiB
C
88 lines
2.5 KiB
C
/*
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* Copyright (c) 2006-2024 RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2018/08/11 Bernard the first version
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*/
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#ifndef RT_DL_MODULE_H__
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#define RT_DL_MODULE_H__
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#include <rtthread.h>
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#define RT_DLMODULE_STAT_INIT 0x00
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#define RT_DLMODULE_STAT_RUNNING 0x01
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#define RT_DLMODULE_STAT_CLOSING 0x02
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#define RT_DLMODULE_STAT_CLOSED 0x03
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struct rt_dlmodule;
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typedef void* rt_addr_t;
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typedef void (*rt_dlmodule_init_func_t)(struct rt_dlmodule *module);
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typedef void (*rt_dlmodule_cleanup_func_t)(struct rt_dlmodule *module);
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typedef int (*rt_dlmodule_entry_func_t)(int argc, char** argv);
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struct rt_dlmodule
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{
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struct rt_object parent;
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rt_list_t object_list; /* objects inside this module */
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rt_uint8_t stat; /* status of module */
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/* main thread of this module */
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rt_uint16_t priority;
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rt_uint32_t stack_size;
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struct rt_thread *main_thread;
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/* the return code */
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int ret_code;
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/* VMA base address for the first LOAD segment */
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rt_uint32_t vstart_addr;
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/* module entry, RT_NULL for dynamic library */
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rt_dlmodule_entry_func_t entry_addr;
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char *cmd_line; /* command line */
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rt_addr_t mem_space; /* memory space */
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rt_uint32_t mem_size; /* sizeof memory space */
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/* init and clean function */
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rt_dlmodule_init_func_t init_func;
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rt_dlmodule_cleanup_func_t cleanup_func;
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rt_uint16_t nref; /* reference count */
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rt_uint16_t nsym; /* number of symbols in the module */
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struct rt_module_symtab *symtab; /* module symbol table */
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};
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struct rt_dlmodule_ops
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{
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rt_uint8_t *(*load)(const char* filename); /* load dlmodule file data */
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rt_err_t (*unload)(rt_uint8_t *param); /* unload dlmodule file data */
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};
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struct rt_dlmodule *dlmodule_create(void);
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rt_err_t dlmodule_destroy(struct rt_dlmodule* module);
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struct rt_dlmodule *dlmodule_self(void);
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struct rt_dlmodule *dlmodule_load(const char* pgname);
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struct rt_dlmodule *dlmodule_exec(const char* pgname, const char* cmd, int cmd_size);
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#if defined(RT_USING_CUSTOM_DLMODULE)
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struct rt_dlmodule* dlmodule_load_custom(const char* filename, struct rt_dlmodule_ops* ops);
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struct rt_dlmodule* dlmodule_exec_custom(const char* pgname, const char* cmd, int cmd_size, struct rt_dlmodule_ops* ops);
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#endif
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void dlmodule_exit(int ret_code);
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struct rt_dlmodule *dlmodule_find(const char *name);
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rt_ubase_t dlmodule_symbol_find(const char *sym_str);
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#endif
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