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Implement if-else

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This commit is contained in:
Eugen Wissner
2025-09-13 21:15:09 +02:00
parent 216dc59f0b
commit ee3b733a81
4 changed files with 1859 additions and 84 deletions
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12
boot/stage8.elna
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@@ -7,6 +7,10 @@
# - Procedure calls in expressions.
# - Comments between (* and *) are supported. These are still single line
# comments and they should be on a separate line.
# - _syscall builtin. _syscall takes 7 arguments,
# the 7th argument gets stored in a7 before invoking ecall.
# Other arguments are saved in a0 through a5.
# - New intrinsics: _load_byte, _load_word, _store_byte, _store_word.
const
symbol_builtin_name_int := "Int";
symbol_builtin_name_word := "Word";
@@ -1403,7 +1407,13 @@ begin
_skip_empty_lines();
_compile_var_part();
_write_z(".section .text\n\0");
_write_z(".section .text\n\n\0");
_write_z(".type _syscall, @function\n_syscall:\n\tmv a7, a6\n\tecall\n\tret\n\n\0");
_write_z(".type _load_byte, @function\n_load_byte:\n\tlb a0, (a0)\nret\n\n\0");
_write_z(".type _load_word, @function\n_load_word:\n\tlw a0, (a0)\nret\n\n\0");
_write_z(".type _store_byte, @function\n_store_byte:\n\tsb a0, (a1)\nret\n\n\0");
_write_z(".type _store_word, @function\n_store_word:\n\tsw a0, (a1)\nret\n\n\0");
.compile_module_loop:
_skip_empty_lines();