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teach aot emitter/loader about .srodata and .srodata.cst* sections (#4240)

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LLVM 19 and later started to use srodata ("small read only data")
sections for RISCV.  cf. https://github.com/llvm/llvm-project/pull/82214
this commit makes our aot emitter/loader deal with those sections.

an alternative would be to disable small data sections completely by
setting the "SmallDataLimit" module attribute to zero. however, i feel
this commit is more straightforward and consisitent as we are already
dealing with sdata sections.
This commit is contained in:
YAMAMOTO Takashi 2025-05-06 07:55:35 +09:00 committed by GitHub
parent 9773390537
commit 3232bdf2f7
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2 changed files with 13 additions and 2 deletions
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6
core/iwasm/aot/aot_loader.c
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@ -3189,10 +3189,12 @@ do_text_relocation(AOTModule *module, AOTRelocationGroup *group,
symbol_addr = module->code;
}
else if (!strcmp(symbol, ".data") || !strcmp(symbol, ".sdata")
|| !strcmp(symbol, ".rdata")
|| !strcmp(symbol, ".rodata")
|| !strcmp(symbol, ".rdata") || !strcmp(symbol, ".rodata")
|| !strcmp(symbol, ".srodata")
/* ".rodata.cst4/8/16/.." */
|| !strncmp(symbol, ".rodata.cst", strlen(".rodata.cst"))
/* ".srodata.cst4/8/16/.." */
|| !strncmp(symbol, ".srodata.cst", strlen(".srodata.cst"))
/* ".rodata.strn.m" */
|| !strncmp(symbol, ".rodata.str", strlen(".rodata.str"))
|| !strcmp(symbol, AOT_STACK_SIZES_SECTION_NAME)

9
core/iwasm/compilation/aot_emit_aot_file.c
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@ -3270,8 +3270,17 @@ is_data_section(AOTObjectData *obj_data, LLVMSectionIteratorRef sec_itr,
return (!strcmp(section_name, ".data") || !strcmp(section_name, ".sdata")
|| !strcmp(section_name, ".rodata")
#if LLVM_VERSION_MAJOR >= 19
/* https://github.com/llvm/llvm-project/pull/82214 */
|| !strcmp(section_name, ".srodata")
#endif
/* ".rodata.cst4/8/16/.." */
|| !strncmp(section_name, ".rodata.cst", strlen(".rodata.cst"))
#if LLVM_VERSION_MAJOR >= 19
/* https://github.com/llvm/llvm-project/pull/82214
* ".srodata.cst4/8/16/.." */
|| !strncmp(section_name, ".srodata.cst", strlen(".srodata.cst"))
#endif
/* ".rodata.strn.m" */
|| !strncmp(section_name, ".rodata.str", strlen(".rodata.str"))
|| (!strcmp(section_name, ".rdata")