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refactor stack pointer initialisation

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This commit is contained in:
Brian Carroll 2021-11-02 14:00:22 +00:00
parent baf896f6f9
commit d8c1017aec
2 changed files with 20 additions and 10 deletions
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13
compiler/gen_wasm/src/lib.rs
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@ -19,8 +19,7 @@ use roc_mono::layout::LayoutIds;
use crate::backend::WasmBackend;
use crate::code_builder::{Align, CodeBuilder, ValueType};
use crate::module_builder::{
Export, ExportType, Global, GlobalInitValue, GlobalType, LinkingSection, LinkingSubSection,
SectionId, SymInfo, WasmModule,
Export, ExportType, Global, GlobalInitValue, GlobalType, LinkingSubSection, SymInfo, WasmModule,
};
use crate::serialize::{SerialBuffer, Serialize};
@ -95,22 +94,20 @@ pub fn build_module_help<'a>(
let symbol_table = LinkingSubSection::SymbolTable(symbol_table_entries);
backend.module.linking.subsections.push(symbol_table);
const MIN_MEMORY_SIZE_KB: i32 = 1024;
backend.module.export.entries.push(Export {
name: "memory".to_string(),
ty: ExportType::Mem,
index: 0,
});
let stack_pointer_global = Global {
let stack_pointer_init = backend.module.memory.min_size().unwrap() as i32;
backend.module.global.entries.push(Global {
ty: GlobalType {
value_type: ValueType::I32,
is_mutable: true,
},
init_value: GlobalInitValue::I32(MIN_MEMORY_SIZE_KB * 1024),
};
backend.module.global.entries.push(stack_pointer_global);
init_value: GlobalInitValue::I32(stack_pointer_init),
});
Ok((backend.parity_builder, backend.module))
}