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py/emitinlinerv32: Add inline assembler support for RV32.

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This commit adds support for writing inline assembler functions when
targeting a RV32IMC processor.

Given that this takes up a bit of rodata space due to its large
instruction decoding table and its extensive error messages, it is
enabled by default only on offline targets such as mpy-cross and the
qemu port.

Signed-off-by: Alessandro Gatti <a.gatti@frob.it>
This commit is contained in:
Alessandro Gatti
2024-08-25 16:28:35 +02:00
committed by Damien George
parent 3044233ea3
commit 268acb714d
47 changed files with 2649 additions and 45 deletions
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6
py/compile.c
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@@ -147,6 +147,7 @@ static const emit_inline_asm_method_table_t *emit_asm_table[] = {
&emit_inline_thumb_method_table,
&emit_inline_xtensa_method_table,
NULL,
&emit_inline_rv32_method_table,
};
#elif MICROPY_EMIT_INLINE_ASM
@@ -157,6 +158,9 @@ static const emit_inline_asm_method_table_t *emit_asm_table[] = {
#elif MICROPY_EMIT_INLINE_XTENSA
#define ASM_DECORATOR_QSTR MP_QSTR_asm_xtensa
#define ASM_EMITTER(f) emit_inline_xtensa_##f
#elif MICROPY_EMIT_INLINE_RV32
#define ASM_DECORATOR_QSTR MP_QSTR_asm_rv32
#define ASM_EMITTER(f) emit_inline_rv32_##f
#else
#error "unknown asm emitter"
#endif
@@ -855,6 +859,8 @@ static bool compile_built_in_decorator(compiler_t *comp, size_t name_len, mp_par
*emit_options = MP_EMIT_OPT_ASM;
} else if (attr == MP_QSTR_asm_xtensa) {
*emit_options = MP_EMIT_OPT_ASM;
} else if (attr == MP_QSTR_asm_rv32) {
*emit_options = MP_EMIT_OPT_ASM;
#else
} else if (attr == ASM_DECORATOR_QSTR) {
*emit_options = MP_EMIT_OPT_ASM;