Added support for GNU Linker Script (#3373)

components.json

@@ -507,6 +507,11 @@
 			"alias": "gni",
 			"owner": "RunDevelopment"
 		},
+		"linker-script": {
+			"title": "GNU Linker Script",
+			"alias": "ld",
+			"owner": "RunDevelopment"
+		},
 		"go": {
 			"title": "Go",
 			"require": "clike",

components/prism-linker-script.js

@@ -0,0 +1,30 @@
+Prism.languages['linker-script'] = {
+	'comment': {
+		pattern: /(^|\s)\/\*[\s\S]*?(?:$|\*\/)/,
+		lookbehind: true,
+		greedy: true
+	},
+	'identifier': {
+		pattern: /"[^"\r\n]*"/,
+		greedy: true
+	},
+
+	'location-counter': {
+		pattern: /\B\.\B/,
+		alias: 'important'
+	},
+
+	'section': {
+		pattern: /(^|[^\w*])\.\w+\b/,
+		lookbehind: true,
+		alias: 'keyword'
+	},
+	'function': /\b[A-Z][A-Z_]*(?=\s*\()/,
+
+	'number': /\b(?:0[xX][a-fA-F0-9]+|\d+)[KM]?\b/,
+
+	'operator': />>=?|<<=?|->|\+\+|--|&&|\|\||::|[?:~]|[-+*/%&|^!=<>]=?/,
+	'punctuation': /[(){},;]/
+};
+
+Prism.languages['ld'] = Prism.languages['linker-script'];

components/prism-linker-script.min.js

@@ -0,0 +1 @@
+Prism.languages["linker-script"]={comment:{pattern:/(^|\s)\/\*[\s\S]*?(?:$|\*\/)/,lookbehind:!0,greedy:!0},identifier:{pattern:/"[^"\r\n]*"/,greedy:!0},"location-counter":{pattern:/\B\.\B/,alias:"important"},section:{pattern:/(^|[^\w*])\.\w+\b/,lookbehind:!0,alias:"keyword"},function:/\b[A-Z][A-Z_]*(?=\s*\()/,number:/\b(?:0[xX][a-fA-F0-9]+|\d+)[KM]?\b/,operator:/>>=?|<<=?|->|\+\+|--|&&|\|\||::|[?:~]|[-+*/%&|^!=<>]=?/,punctuation:/[(){},;]/},Prism.languages.ld=Prism.languages["linker-script"];

examples/prism-linker-script.html

@@ -0,0 +1,53 @@
+<h2>Full example</h2>
+<pre><code>/* Source: https://github.com/stivale/stivale2-barebones/blob/master/kernel/linker.ld */
+
+/* We want the symbol _start to be our entry point */
+ENTRY(_start)
+
+/* Define the program headers we want so the bootloader gives us the right */
+/* MMU permissions */
+PHDRS
+{
+    null    PT_NULL    FLAGS(0) ;                   /* Null segment */
+    text    PT_LOAD    FLAGS((1 &lt;&lt; 0) | (1 &lt;&lt; 2)) ; /* Execute + Read */
+    rodata  PT_LOAD    FLAGS((1 &lt;&lt; 2)) ;            /* Read only */
+    data    PT_LOAD    FLAGS((1 &lt;&lt; 1) | (1 &lt;&lt; 2)) ; /* Write + Read */
+}
+
+SECTIONS
+{
+    /* We wanna be placed in the topmost 2GiB of the address space, for optimisations */
+    /* and because that is what the stivale2 spec mandates. */
+    /* Any address in this region will do, but often 0xffffffff80000000 is chosen as */
+    /* that is the beginning of the region. */
+    . = 0xffffffff80000000;
+
+    .text : {
+        *(.text .text.*)
+    } :text
+
+    /* Move to the next memory page for .rodata */
+    . += CONSTANT(MAXPAGESIZE);
+
+    /* We place the .stivale2hdr section containing the header in its own section, */
+    /* and we use the KEEP directive on it to make sure it doesn't get discarded. */
+    .stivale2hdr : {
+        KEEP(*(.stivale2hdr))
+    } :rodata
+
+    .rodata : {
+        *(.rodata .rodata.*)
+    } :rodata
+
+    /* Move to the next memory page for .data */
+    . += CONSTANT(MAXPAGESIZE);
+
+    .data : {
+        *(.data .data.*)
+    } :data
+
+    .bss : {
+        *(COMMON)
+        *(.bss .bss.*)
+    } :data
+}</code></pre>

plugins/autoloader/prism-autoloader.js

@@ -199,6 +199,7 @@
 		"gamemakerlanguage": "gml",
 		"po": "gettext",
 		"gni": "gn",
+		"ld": "linker-script",
 		"go-mod": "go-module",
 		"hbs": "handlebars",
 		"hs": "haskell",

plugins/show-language/prism-show-language.js

@@ -102,6 +102,8 @@
 		"glsl": "GLSL",
 		"gn": "GN",
 		"gni": "GN",
+		"linker-script": "GNU Linker Script",
+		"ld": "GNU Linker Script",
 		"go-module": "Go module",
 		"go-mod": "Go module",
 		"graphql": "GraphQL",

tests/languages/linker-script/comment_feature.test

@@ -0,0 +1,11 @@
+/**/
+/*
+comment
+*/
+
+----------------------------------------------------
+
+[
+	["comment", "/**/"],
+	["comment", "/*\r\ncomment\r\n*/"]
+]

tests/languages/linker-script/function_feature.test

@@ -0,0 +1,22 @@
+MAX (SIZEOF (.text0), SIZEOF (.text1))
+
+FOO()
+
+----------------------------------------------------
+
+[
+	["function", "MAX"],
+	["punctuation", "("],
+	["function", "SIZEOF"],
+	["punctuation", "("],
+	["section", ".text0"],
+	["punctuation", ")"],
+	["punctuation", ","],
+	["function", "SIZEOF"],
+	["punctuation", "("],
+	["section", ".text1"],
+	["punctuation", ")"],
+	["punctuation", ")"],
+
+	["function", "FOO"], ["punctuation", "("], ["punctuation", ")"]
+]

tests/languages/linker-script/identifier_feature.test

@@ -0,0 +1,24 @@
+"SECTION" = 9;
+"with a space" = "also with a space" + 10;
+_fourk_1 = 4K;
+
+----------------------------------------------------
+
+[
+	["identifier", "\"SECTION\""],
+	["operator", "="],
+	["number", "9"],
+	["punctuation", ";"],
+
+	["identifier", "\"with a space\""],
+	["operator", "="],
+	["identifier", "\"also with a space\""],
+	["operator", "+"],
+	["number", "10"],
+	["punctuation", ";"],
+
+	"\r\n_fourk_1 ",
+	["operator", "="],
+	["number", "4K"],
+	["punctuation", ";"]
+]

tests/languages/linker-script/location-counter_feature.test

@@ -0,0 +1,58 @@
+SECTIONS
+{
+  output :
+  {
+  file1(.text)
+  . = . + 1000;
+  file2(.text)
+  . += 1000;
+  file3(.text)
+  } = 0x1234;
+}
+
+----------------------------------------------------
+
+[
+	"SECTIONS\r\n",
+
+	["punctuation", "{"],
+
+	"\r\n  output ",
+	["operator", ":"],
+
+	["punctuation", "{"],
+
+	"\r\n  file1",
+	["punctuation", "("],
+	["section", ".text"],
+	["punctuation", ")"],
+
+	["location-counter", "."],
+	["operator", "="],
+	["location-counter", "."],
+	["operator", "+"],
+	["number", "1000"],
+	["punctuation", ";"],
+
+	"\r\n  file2",
+	["punctuation", "("],
+	["section", ".text"],
+	["punctuation", ")"],
+
+	["location-counter", "."],
+	["operator", "+="],
+	["number", "1000"],
+	["punctuation", ";"],
+
+	"\r\n  file3",
+	["punctuation", "("],
+	["section", ".text"],
+	["punctuation", ")"],
+
+	["punctuation", "}"],
+	["operator", "="],
+	["number", "0x1234"],
+	["punctuation", ";"],
+
+	["punctuation", "}"]
+]

tests/languages/linker-script/number_feature.test

@@ -0,0 +1,27 @@
+0157255
+57001
+0xdead
+0x0123456789abcdefABCDEF
+
+4K
+4096
+0x1000
+
+1M
+0x100000000
+
+----------------------------------------------------
+
+[
+	["number", "0157255"],
+	["number", "57001"],
+	["number", "0xdead"],
+	["number", "0x0123456789abcdefABCDEF"],
+
+	["number", "4K"],
+	["number", "4096"],
+	["number", "0x1000"],
+
+	["number", "1M"],
+	["number", "0x100000000"]
+]

tests/languages/linker-script/operator_feature.test

@@ -0,0 +1,57 @@
++ - * / % -- ++
+>> <<
+~ & | ^
++= -= *= /= %= >>= <<= &= |= ^=
+! && ||
+-> ::
+? :
+= == != < > <= >=
+
+----------------------------------------------------
+
+[
+	["operator", "+"],
+	["operator", "-"],
+	["operator", "*"],
+	["operator", "/"],
+	["operator", "%"],
+	["operator", "--"],
+	["operator", "++"],
+
+	["operator", ">>"],
+	["operator", "<<"],
+
+	["operator", "~"],
+	["operator", "&"],
+	["operator", "|"],
+	["operator", "^"],
+
+	["operator", "+="],
+	["operator", "-="],
+	["operator", "*="],
+	["operator", "/="],
+	["operator", "%="],
+	["operator", ">>="],
+	["operator", "<<="],
+	["operator", "&="],
+	["operator", "|="],
+	["operator", "^="],
+
+	["operator", "!"],
+	["operator", "&&"],
+	["operator", "||"],
+
+	["operator", "->"],
+	["operator", "::"],
+
+	["operator", "?"],
+	["operator", ":"],
+
+	["operator", "="],
+	["operator", "=="],
+	["operator", "!="],
+	["operator", "<"],
+	["operator", ">"],
+	["operator", "<="],
+	["operator", ">="]
+]

tests/languages/linker-script/punctuation_feature.test

@@ -0,0 +1,14 @@
+( ) { }
+; ,
+
+----------------------------------------------------
+
+[
+	["punctuation", "("],
+	["punctuation", ")"],
+	["punctuation", "{"],
+	["punctuation", "}"],
+
+	["punctuation", ";"],
+	["punctuation", ","]
+]

tests/languages/linker-script/section_feature.test

@@ -0,0 +1,11 @@
+.data
+.DATA
+.text
+
+----------------------------------------------------
+
+[
+	["section", ".data"],
+	["section", ".DATA"],
+	["section", ".text"]
+]