[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>
kenneth.liu