Files
llgo/targets/arm.ld
Li Jie b80a54eb0f feat: implement target configuration system for issue #1176
Add comprehensive target configuration parsing and inheritance system:

- Create internal/targets package with config structures
- Support JSON configuration loading with inheritance resolution
- Implement multi-level inheritance (e.g., rp2040 → cortex-m0plus → cortex-m)
- Add 206 target configurations from TinyGo for embedded platforms
- Support core fields: name, llvm-target, cpu, features, build-tags, goos, goarch, cflags, ldflags
- Provide high-level resolver interface for target lookup
- Include comprehensive unit tests with 100% target parsing coverage

This foundation enables future -target parameter support for cross-compilation
to diverse embedded platforms beyond current GOOS/GOARCH limitations.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>
2025-07-29 15:12:58 +08:00

87 lines
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/* Unused, but here to silence a linker warning. */
ENTRY(Reset_Handler)
/* define output sections */
SECTIONS
{
/* Program code and read-only data goes to FLASH_TEXT. */
.text :
{
KEEP(*(.isr_vector))
KEEP(*(.after_isr_vector)) /* for the RP2350 */
*(.text)
*(.text.*)
*(.rodata)
*(.rodata.*)
. = ALIGN(4);
} >FLASH_TEXT
.tinygo_stacksizes :
{
*(.tinygo_stacksizes)
} > FLASH_TEXT
/* Put the stack at the bottom of RAM, so that the application will
* crash on stack overflow instead of silently corrupting memory.
* See: http://blog.japaric.io/stack-overflow-protection/ */
.stack (NOLOAD) :
{
. = ALIGN(4);
. += _stack_size;
_stack_top = .;
} >RAM
/* Stack for second core (core 1), if there is one. */
.stack1 (NOLOAD) :
{
. = ALIGN(4);
. += DEFINED(__num_stacks) && __num_stacks >= 2 ? _stack_size : 0;
_stack1_top = .;
} >RAM
/* Start address (in flash) of .data, used by startup code. */
_sidata = LOADADDR(.data);
/* Globals with initial value */
.data :
{
. = ALIGN(4);
_sdata = .; /* used by startup code */
*(.data)
*(.data.*)
. = ALIGN(4);
*(.ramfuncs*) /* Functions that must execute from RAM */
. = ALIGN(4);
_edata = .; /* used by startup code */
} >RAM AT>FLASH_TEXT
/* Zero-initialized globals */
.bss :
{
. = ALIGN(4);
_sbss = .; /* used by startup code */
*(.bss)
*(.bss.*)
*(COMMON)
. = ALIGN(4);
_ebss = .; /* used by startup code */
} >RAM
/DISCARD/ :
{
*(.ARM.exidx) /* causes 'no memory region specified' error in lld */
*(.ARM.exidx.*) /* causes spurious 'undefined reference' errors */
}
}
/* For the memory allocator. */
_heap_start = _ebss;
_heap_end = ORIGIN(RAM) + LENGTH(RAM);
_globals_start = _sdata;
_globals_end = _ebss;
/* For the flash API */
__flash_data_start = LOADADDR(.data) + SIZEOF(.data);
__flash_data_end = ORIGIN(FLASH_TEXT) + LENGTH(FLASH_TEXT);