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Implement XIP feature and enable ARC target support (#694)

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Implement XIP (Execution In Place) feature for AOT mode to enable running the AOT code inside AOT file directly, without memory mapping the executable memory for AOT code and applying relocations for text section. Developer can use wamrc with "--enable-indirect-mode --disable-llvm-intrinsics" flags to generate the AOT file and run iwasm with "--xip" flag. Known issues: there might still be some relocations in the text section which access the ".rodata" like sections.

And also enable ARC target support for both interpreter mode and AOT mode.

Signed-off-by: Wenyong Huang <wenyong.huang@intel.com>
This commit is contained in:
Wenyong Huang
2021-08-12 17:44:39 +08:00
committed by GitHub
parent 8fd89bd415
commit db695fada4
44 changed files with 2613 additions and 263 deletions
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13
core/iwasm/compilation/aot_compiler.c
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@ -2111,19 +2111,26 @@ bool
aot_emit_object_file(AOTCompContext *comp_ctx, char *file_name)
{
char *err = NULL;
LLVMCodeGenFileType file_type = LLVMObjectFile;
LLVMTargetRef target =
LLVMGetTargetMachineTarget(comp_ctx->target_machine);
bh_print_time("Begin to emit object file");
if (!strncmp(LLVMGetTargetName(target), "arc", 3))
/* Emit to assmelby file instead for arc target
as it cannot emit to object file */
file_type = LLVMAssemblyFile;
if (LLVMTargetMachineEmitToFile(comp_ctx->target_machine,
comp_ctx->module,
file_name,
LLVMObjectFile,
file_name, file_type,
&err) != 0) {
if (err) {
LLVMDisposeMessage(err);
err = NULL;
}
aot_set_last_error("emit elf to memory buffer failed.");
aot_set_last_error("emit elf to object file failed.");
return false;
}