wrap up -bare

vlib/compiler/cc.v

@@ -109,6 +109,9 @@ fn (v mut V) cc() {
 		a << '-shared -fPIC '// -Wl,-z,defs'
 		v.out_name = v.out_name + '.so'
 	}
+	if v.pref.is_bare {
+		a << '-nostdlib $vdir/vlib/os/bare/bare.S'
+	}	
 	if v.pref.build_mode == .build_module {
 		// Create the modules & out directory if it's not there.
 		mut out_dir := if v.dir.starts_with('vlib') {
@@ -279,7 +282,7 @@ start:
 			return
 		}
 		*/
-		verror(err) 
+		verror(err)
 		return
 	}
 	if res.exit_code != 0 {

vlib/compiler/cheaders.v

@@ -2,7 +2,7 @@ module compiler
 
 const (
 
-CommonCHeaders = '
+c_headers = '
 
 #include <stdio.h>  // TODO remove all these includes, define all function signatures and types manually
 #include <stdlib.h>
@@ -10,7 +10,6 @@ CommonCHeaders = '
 //#include "fns.h"
 #include <signal.h>
 #include <stdarg.h> // for va_list
-#include <inttypes.h>  // int64_t etc
 #include <string.h> // memcpy
 
 #ifndef _WIN32
@@ -105,35 +104,6 @@ CommonCHeaders = '
 #include <pthread.h>
 #endif
 
-//================================== TYPEDEFS ================================*/
-
-typedef int64_t i64;
-typedef int16_t i16;
-typedef int8_t i8;
-typedef uint64_t u64;
-typedef uint32_t u32;
-typedef uint16_t u16;
-typedef uint8_t byte;
-typedef uint32_t rune;
-typedef float f32;
-typedef double f64;
-typedef unsigned char* byteptr;
-typedef int* intptr;
-typedef void* voidptr;
-typedef struct array array;
-typedef struct map map;
-typedef array array_string;
-typedef array array_int;
-typedef array array_byte;
-typedef array array_f32;
-typedef array array_f64;
-typedef map map_int;
-typedef map map_string;
-#ifndef bool
-	typedef int bool;
-	#define true 1
-	#define false 0
-#endif
 
 //============================== HELPER C MACROS =============================*/
 #define _PUSH(arr, val, tmp, tmp_typ) {tmp_typ tmp = (val); array_push(arr, &tmp);}
@@ -175,4 +145,39 @@ var map_string = function() {}
 var map_int = function() {}
 
 '
+
+
+c_builtin_types = '
+
+//================================== TYPEDEFS ================================*/
+
+#include <inttypes.h>  // int64_t etc
+typedef int64_t i64;
+typedef int16_t i16;
+typedef int8_t i8;
+typedef uint64_t u64;
+typedef uint32_t u32;
+typedef uint16_t u16;
+typedef uint8_t byte;
+typedef uint32_t rune;
+typedef float f32;
+typedef double f64;
+typedef unsigned char* byteptr;
+typedef int* intptr;
+typedef void* voidptr;
+typedef struct array array;
+typedef struct map map;
+typedef array array_string;
+typedef array array_int;
+typedef array array_byte;
+typedef array array_f32;
+typedef array array_f64;
+typedef map map_int;
+typedef map map_string;
+#ifndef bool
+	typedef int bool;
+	#define true 1
+	#define false 0
+#endif
+'
 )

vlib/compiler/fn.v

@@ -1136,7 +1136,7 @@ fn (p mut Parser) fn_call_args(f mut Fn) {
 				! (expected == 'byte*' && got.contains(']byte')) &&
 				! (expected == 'byte*' && got == 'string') &&
 				//! (expected == 'void*' && got == 'array_int') {
-				! (expected == 'byte*' && got == 'byteptr') {
+				! (expected == 'byte*' && got == 'byteptr') && !p.pref.is_bare {
 					p.cgen.set_placeholder(ph, '& /*112 e="$expected" g="$got" */')
 				}
 			}

vlib/compiler/main.v

@@ -234,7 +234,10 @@ pub fn (v mut V) compile() {
 	$if js {
 		cgen.genln(js_headers)
 	} $else {
-		cgen.genln(CommonCHeaders)
+		cgen.genln(c_builtin_types)
+		if !v.pref.is_bare {
+			cgen.genln(c_headers)
+		}
 	}
 	v.generate_hotcode_reloading_declarations()
 	// We need the cjson header for all the json decoding that will be done in
@@ -295,8 +298,10 @@ pub fn (v mut V) compile() {
 		def.writeln(cgen.includes.join_lines())
 		def.writeln(cgen.typedefs.join_lines())
 		def.writeln(v.type_definitions())
-		def.writeln('\nstring _STR(const char*, ...);\n')
-		def.writeln('\nstring _STR_TMP(const char*, ...);\n')
+		if !v.pref.is_bare {
+			def.writeln('\nstring _STR(const char*, ...);\n')
+			def.writeln('\nstring _STR_TMP(const char*, ...);\n')
+		}
 		def.writeln(cgen.fns.join_lines()) // fn definitions
 		def.writeln(v.interface_table())
 	} $else {
@@ -353,6 +358,7 @@ fn (v mut V) generate_init() {
 			}
 		}
 		consts_init_body := v.cgen.consts_init.join_lines()
+		if !v.pref.is_bare {
 		// vlib can't have `init_consts()`
 		v.cgen.genln('void init() {
 g_str_buf=malloc(1000);
@@ -396,6 +402,7 @@ string _STR_TMP(const char *fmt, ...) {
 
 ')
 	}
+	}
 }
 
 pub fn (v mut V) generate_main() {
@@ -403,12 +410,12 @@ pub fn (v mut V) generate_main() {
 	$if js { return }
 
 	if v.pref.is_vlines {
-		///// After this point, the v files are compiled.
-		///// The rest is auto generated code, which will not have
-		///// different .v source file/line numbers.
+		// After this point, the v files are compiled.
+		// The rest is auto generated code, which will not have
+		// different .v source file/line numbers.
 		lines_so_far := cgen.lines.join('\n').count('\n') + 5
 		cgen.genln('')
-		cgen.genln('////////////////// Reset the file/line numbers //////////')
+		cgen.genln('// Reset the file/line numbers')
 		cgen.lines << '#line $lines_so_far "${cescaped_path(os.realpath(cgen.out_path))}"'
 		cgen.genln('')
 	}
@@ -460,7 +467,9 @@ pub fn (v mut V) generate_main() {
 
 pub fn (v mut V) gen_main_start(add_os_args bool){
 	v.cgen.genln('int main(int argc, char** argv) { ')
-	v.cgen.genln('  init();')
+	if !v.pref.is_bare {
+		v.cgen.genln('  init();')
+	}
 	if add_os_args && 'os' in v.table.imports {
 		v.cgen.genln('  os__args = os__init_os_args(argc, (byteptr*)argv);')
 	}

vlib/compiler/parser.v

@@ -2137,7 +2137,7 @@ fn (p mut Parser) string_expr() {
 		Calling a C function sometimes requires a call to a string method
 		C.fun('ssss'.to_wide()) =>  fun(string_to_wide(tos3("ssss")))
 		*/
-		if (p.calling_c && p.peek() != .dot) || (p.pref.translated && p.mod == 'main') {
+		if (p.calling_c && p.peek() != .dot) || p.pref.is_bare || (p.pref.translated && p.mod == 'main') {
 			p.gen('"$f"')
 		}
 		else if p.is_sql {

vlib/os/bare/bare.S

@@ -1,13 +1,13 @@
 .intel_syntax noprefix
 .text
-    .globl _start, syscall5
+    .globl _start, main__syscall5
 
     _start:
         xor rbp,rbp
         pop rdi
         mov rsi,rsp
         and rsp,-16
-        call main
+        call main__main
 
         mov rdi,rax /* syscall param 1 = rax (ret value of main) */
         mov rax,60 /* SYS_exit */
@@ -16,7 +16,7 @@
         ret /* should never be reached, but if the OS somehow fails
                to kill us, it will cause a segmentation fault */
 
-    syscall5:
+    main__syscall5:
         mov rax,rdi
         mov rdi,rsi
         mov rsi,rdx

vlib/os/bare/bare.v

@@ -1,16 +1,16 @@
 fn syscall5(number, arg1, arg2, arg3, arg4, arg5 voidptr) voidptr
 
 fn write(fd int, data voidptr, nbytes u64) int {
-	return 	 syscall5(
+	return syscall5(
           1, // SYS_write
-           fd,
-            data,
-            nbytes,
-            0, // ignored
-            0  // ignored
-        )
+          fd,
+          data,
+          nbytes,
+          0, // ignored
+          0  // ignored
+	)
 }
 
 fn main() {
-C.write(1, "hallo\n", 6)
+	write(1, "hallo\n", 6)
 }