From 905d229f153bf2df9078ef90dea9998784312b02 Mon Sep 17 00:00:00 2001 From: Dale Weiler Date: Tue, 17 Apr 2012 05:04:07 -0400 Subject: [PATCH] Update README --- README | 71 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) diff --git a/README b/README index 48955ae..f18d3b0 100644 --- a/README +++ b/README @@ -34,6 +34,11 @@ util.c These are utilities for the compiler, some things in here include a allocator used for debugging, and some string functions. +assembler.c + This implements support for assembling Quake assembler (which doesn't + actually exist untill now: documentation of the Quake assembler is below. + This also implements (will) inline assembly for the C compiler. + README This is the file you're currently reading @@ -48,3 +53,69 @@ Makefile #make clean Cleans the build files left behind by a previous build + +//////////////////////////////////////////////////////////////////////// +///////////////////// Quake Assembler Documentation //////////////////// +//////////////////////////////////////////////////////////////////////// +Quake assembler is quite simple: it's just an annotated version of the binary +produced by any existing QuakeC compiler, but made cleaner to use, (so that +the location of various globals or strings are not required to be known). + +Constants: + Using one of the following valid constant typenames, you can declare + a constant {FLOAT,VECTOR,FUNCTION,FIELD,ENTITY}, all typenames are + proceeded by a colon, and the name (white space doesn't matter). + + Examples: + FLOAT: foo 1 + VECTOR: bar 1 2 1 + STRING: hello "hello world" + +Comments: + Commenting assembly requires the use of either # or ; on the line + that you'd like to be ignored by the assembler. You can only comment + blank lines, and not lines assembly already exists on. + +Functions: + Creating functions is the same as declaring a constant, simply use + FUNCTION followed by a colon, and the name (white space doesn't matter) + and start the statements for that function on the line after it + + Examples: + FLOAT: foo 1 + FLOAT: bar 2 + FUNCTION: test1 + ADD foo, bar, OFS_RETURN + RETURN + + FUNCTION: test2 + CALL0 test1 + DONE + +Internal: + The Quake engine provides some internal functions such as print, to + access these you first must declare them and their names. To do this + you create a FUNCTION as you currently do. Adding a $ followed by the + number of the engine builtin will bind it to that builtin. + + Examples: + FUNCTION: print $4 + FUNCTION: error $3 + +Misc: + There are some rules as to what your identifiers can be for functions + and constants. All indentifiers mustn't begin with a numeric digit, + identifiers cannot include spaces, or tabs; they cannot contain symbols, + and they cannot exceed 32768 characters. Identifiers cannot be all + capitalized either, as all capatilized identifiers are reserved by the + assembler. + + Numeric constants cannot contain special notation such as `1-e10`, all + numeric constants have to be numeric, they can contain decmial points + and signs (+, -) however. + + Constants cannot be assigned values of other constants, their value must + be fully expressed inspot of the declration. + + No two identifiers can be the same name, this applies for variables allocated + inside a function scope (despite it being considered local). -- 2.39.2