b1fb9be5c9
arm32 had only ever been checked against itself. Its sweep round-trips
our own encode and decode, which agree with each other whether or not
either is right -- exactly how the arm64 bugs stayed hidden for months.
Decoding each entry and handing the text to llvm-mc says something
different: 683 of 1139 A32 entries byte-exact, 166 wrong, 290 that no
assembler would take.
Three real faults out of that first pass:
- The halfword and dual load/stores split their 8-bit offset around
the opcode at bits 7:4, and their pre/post-indexed forms were using
the 12-bit decoder. It swallowed the opcode nibble, so `strht r0,
[r0]` came back as `[r0], #-176` -- 0xb0 being the halfword opcode
read as an offset. 16 forms.
- LDRD and STRD name a register pair and we printed one half of it.
The second is always the first plus one and occupies no bits, so it
needed an encoding that reads Rt and adds one.
- An indexed form printed no displacement when it was zero, which
turns `[r0], #0` into `[r0]` -- a different instruction, since the
writeback is the whole point of the form.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018UmHLRF11EoWwNWCJ7JGaA
The Data-Oriented Language for Sane Software Development.
The Odin Programming Language
Odin is a general-purpose programming language with distinct typing, built for high performance, modern systems, and built-in data-oriented data types. The Odin Programming Language, the C alternative for the joy of programming.
Website: https://odin-lang.org/
package main
import "core:fmt"
main :: proc() {
program := "+ + * 😃 - /"
accumulator := 0
for token in program {
switch token {
case '+': accumulator += 1
case '-': accumulator -= 1
case '*': accumulator *= 2
case '/': accumulator /= 2
case '😃': accumulator *= accumulator
case: // Ignore everything else
}
}
fmt.printf("The program \"%s\" calculates the value %d\n",
program, accumulator)
}
Documentation
Getting Started
Instructions for downloading and installing the Odin compiler and libraries.
Nightly Builds
Get the latest nightly builds of Odin.
Learning Odin
Overview of Odin
An overview of the Odin programming language.
Frequently Asked Questions (FAQ)
Answers to common questions about Odin.
Packages
Documentation for all the official packages part of the core and vendor library collections.
Examples
Examples on how to write idiomatic Odin code. Shows how to accomplish specific tasks in Odin, as well as how to use packages from core and vendor.
Odin Documentation
Documentation for the Odin language itself.
Odin Discord
Get live support and talk with other Odin programmers on the Odin Discord.
Articles
The Odin Blog
The official blog of the Odin programming language, featuring announcements, news, and in-depth articles by the Odin team and guests.
Warnings
- The Odin compiler is still in development.