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Add storeimm32 and storeimm64 syntax

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These explicitly allow usage of storeimm32 and storeimm64 in the
assembler syntax. It will also warn you if you try to store a value
that's too large using the storeimm32 instruction

Signed-off-by: Alek Ratzloff <alekratz@gmail.com>
This commit is contained in:
Alek Ratzloff
2020-02-10 18:59:23 -05:00
parent 15423502f3
commit 0ea3406b71
4 changed files with 29 additions and 7 deletions
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16
src/vm/obj/assemble/mod.rs
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@@ -203,6 +203,22 @@ impl<'a> Assemble<'a> {
}
}
.r1(*r1),
Inst::StoreImm32(r1, imm) => {
let imm = self.get_value(imm).expect("TODO : value label not found");
let imm_truncated = (imm & 0xFFFFFFFF) as u32;
// TODO compile-time warnings
if imm != (imm_truncated as u64) {
eprintln!(
"WARNING: immediate 32 bit value being truncated ({:#x} to {:#x})",
imm, imm_truncated
)
}
builder.op(STOREIMM32).imm32(imm_truncated).r1(*r1)
}
Inst::StoreImm64(r1, imm) => {
let imm = self.get_value(imm).expect("TODO : value label not found");
builder.op(STOREIMM64).imm64(imm).r1(*r1)
}
Inst::MemCopy(r1, r2) => builder.op(MEMCOPY).r1(*r1).r2(*r2),
Inst::RegCopy(r1, r2) => builder.op(REGCOPY).r1(*r1).r2(*r2),
Inst::Nop => builder.op(NOP),