mirrors/Odin
1
0
Fork 0
mirror of https://github.com/odin-lang/Odin.git synced 2026-06-19 16:42:33 +00:00
Code Issues Packages Projects Releases Wiki Activity

Correct sizes of arm32 Instruction and Operand

Browse Source
This commit is contained in:
gingerBill
2026-06-15 14:24:05 +01:00
parent f895e96bde
commit 7aaef31bb3
2 changed files with 5 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
core/rexcode/arm32/instructions.odin
View File

@@ -21,7 +21,7 @@ Instruction_Flags :: bit_field u8 {
}
Instruction :: struct #packed {
ops: [4]Operand `fmt:"v,operand_count"`, // 4 * 17 = 68
ops: [4]Operand `fmt:"v,operand_count"`, // 4 * 22 = 88
mnemonic: Mnemonic, // 2
cond: u8, // 0..15 (AL=14)
operand_count: u8, // 0..4
@@ -36,7 +36,8 @@ Instruction :: struct #packed {
// falls back to first-shape-match. Stored as u16 over the two padding bytes.
form_id: u16,
}
// 68 + 9 = 77 bytes (packed)
#assert(size_of(Instruction) == 97)
// 88 + 9 = 97 bytes (packed)
// =============================================================================
// Builders

4
core/rexcode/arm32/operands.odin
View File

@@ -106,9 +106,9 @@ Operand :: struct #packed {
shift_amt: u8, // immediate shift amount 0..31 (or Rs index for RSR)
lane: u8, // SIMD lane index for DPR_ELEM / QPR_ELEM
cond: u8, // condition code 0..15 (default = AL = 14)
_: u8,
}
// 10-byte raw_union (Memory is largest) + 7 bytes of trailing fields = 17 bytes
#assert(size_of(Operand) == 22)
// 16-byte raw_union (Memory is largest) + 6 bytes of trailing fields = 22 bytes
// (packed; no alignment padding).
// ---- Operand builders ------------------------------------------------------