Merge branch 'master' into freestanding_amd64

16 files changed, 301 insertions, 88 deletions

diff --git a/src/bug_report.cpp b/src/bug_report.cpp
index 4dd251f24..02a2b1ba2 100644
--- a/src/bug_report.cpp
+++ b/src/bug_report.cpp
@@ -17,6 +17,11 @@
 	#include <sys/sysctl.h>

 #endif

 

+#if defined(GB_SYSTEM_OPENBSD)

+	#include <sys/sysctl.h>

+	#include <sys/utsname.h>

+#endif

+

 /*

 	NOTE(Jeroen): This prints the Windows product edition only, to be called from `print_platform_details`.

 */

@@ -242,6 +247,14 @@ void report_ram_info() {
 		if (sysctl(sysctls, 2, &ram_amount, &val_size, NULL, 0) != -1) {

 			gb_printf("%lld MiB\n", ram_amount / gb_megabytes(1));

 		}

+	#elif defined(GB_SYSTEM_OPENBSD)

+		uint64_t ram_amount;

+		size_t   val_size = sizeof(ram_amount);

+

+		int sysctls[] = { CTL_HW, HW_PHYSMEM64 };

+		if (sysctl(sysctls, 2, &ram_amount, &val_size, NULL, 0) != -1) {

+			gb_printf("%lld MiB\n", ram_amount / gb_megabytes(1));

+		}

 	#else

 		gb_printf("Unknown.\n");

 	#endif

@@ -643,6 +656,14 @@ void print_bug_report_help() {
 		} else {

 			gb_printf("macOS: Unknown\n");

 		}			

+	#elif defined(GB_SYSTEM_OPENBSD)

+		struct utsname un;

+		

+		if (uname(&un) != -1) {

+			gb_printf("%s %s %s %s\n", un.sysname, un.release, un.version, un.machine);

+		} else {

+			gb_printf("OpenBSD: Unknown\n");    

+		}

 	#else

 		gb_printf("Unknown\n");

 

@@ -657,4 +678,4 @@ void print_bug_report_help() {
 		And RAM info.

 	*/

 	report_ram_info();

-}
\ No newline at end of file
+}

diff --git a/src/build_settings.cpp b/src/build_settings.cpp
index c94f914dc..b9875e43f 100644
--- a/src/build_settings.cpp
+++ b/src/build_settings.cpp
@@ -1,4 +1,4 @@
-#if defined(GB_SYSTEM_FREEBSD)
+#if defined(GB_SYSTEM_FREEBSD) || defined(GB_SYSTEM_OPENBSD)
 #include <sys/types.h>
 #include <sys/sysctl.h>
 #endif
@@ -16,6 +16,7 @@ enum TargetOsKind : u16 {
 	TargetOs_linux,
 	TargetOs_essence,
 	TargetOs_freebsd,
+	TargetOs_openbsd,
 	
 	TargetOs_wasi,
 	TargetOs_js,
@@ -63,6 +64,7 @@ String target_os_names[TargetOs_COUNT] = {
 	str_lit("linux"),
 	str_lit("essence"),
 	str_lit("freebsd"),
+	str_lit("openbsd"),
 	
 	str_lit("wasi"),
 	str_lit("js"),
@@ -310,7 +312,7 @@ bool global_ignore_warnings(void) {
 }
 
 
-gb_global TargetMetrics target_windows_386 = {
+gb_global TargetMetrics target_windows_i386 = {
 	TargetOs_windows,
 	TargetArch_i386,
 	4,
@@ -326,7 +328,7 @@ gb_global TargetMetrics target_windows_amd64 = {
 	str_lit("e-m:w-i64:64-f80:128-n8:16:32:64-S128"),
 };
 
-gb_global TargetMetrics target_linux_386 = {
+gb_global TargetMetrics target_linux_i386 = {
 	TargetOs_linux,
 	TargetArch_i386,
 	4,
@@ -369,7 +371,7 @@ gb_global TargetMetrics target_darwin_arm64 = {
 	str_lit("e-m:o-i64:64-i128:128-n32:64-S128"), // TODO(bill): Is this correct?
 };
 
-gb_global TargetMetrics target_freebsd_386 = {
+gb_global TargetMetrics target_freebsd_i386 = {
 	TargetOs_freebsd,
 	TargetArch_i386,
 	4,
@@ -386,6 +388,15 @@ gb_global TargetMetrics target_freebsd_amd64 = {
 	str_lit("e-m:w-i64:64-f80:128-n8:16:32:64-S128"),
 };
 
+gb_global TargetMetrics target_openbsd_amd64 = {
+	TargetOs_openbsd,
+	TargetArch_amd64,
+	8,
+	16,
+	str_lit("x86_64-unknown-openbsd-elf"),
+	str_lit("e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"),
+};
+
 gb_global TargetMetrics target_essence_amd64 = {
 	TargetOs_essence,
 	TargetArch_amd64,
@@ -452,13 +463,14 @@ gb_global NamedTargetMetrics named_targets[] = {
 	{ str_lit("darwin_amd64"),        &target_darwin_amd64   },
 	{ str_lit("darwin_arm64"),        &target_darwin_arm64   },
 	{ str_lit("essence_amd64"),       &target_essence_amd64  },
-	{ str_lit("linux_386"),           &target_linux_386      },
+	{ str_lit("linux_i386"),          &target_linux_i386     },
 	{ str_lit("linux_amd64"),         &target_linux_amd64    },
 	{ str_lit("linux_arm64"),         &target_linux_arm64    },
-	{ str_lit("windows_386"),         &target_windows_386    },
+	{ str_lit("windows_i386"),        &target_windows_i386   },
 	{ str_lit("windows_amd64"),       &target_windows_amd64  },
-	{ str_lit("freebsd_386"),         &target_freebsd_386    },
+	{ str_lit("freebsd_i386"),        &target_freebsd_i386   },
 	{ str_lit("freebsd_amd64"),       &target_freebsd_amd64  },
+	{ str_lit("openbsd_amd64"),       &target_openbsd_amd64  },
 	{ str_lit("freestanding_wasm32"), &target_freestanding_wasm32 },
 	{ str_lit("wasi_wasm32"),         &target_wasi_wasm32 },
 	{ str_lit("js_wasm32"),           &target_js_wasm32 },
@@ -765,10 +777,38 @@ String internal_odin_root_dir(void) {
 		len = readlink("/proc/curproc/exe", &path_buf[0], path_buf.count);
 #elif defined(GB_SYSTEM_DRAGONFLYBSD)
 		len = readlink("/proc/curproc/file", &path_buf[0], path_buf.count);
-#else
+#elif defined(GB_SYSTEM_LINUX)
 		len = readlink("/proc/self/exe", &path_buf[0], path_buf.count);
+#elif defined(GB_SYSTEM_OPENBSD)
+		int error;
+		int mib[] = {
+			CTL_KERN,
+			KERN_PROC_ARGS,
+			getpid(),
+			KERN_PROC_ARGV,
+		};
+		// get argv size
+		error = sysctl(mib, 4, NULL, (size_t *) &len, NULL, 0);
+		if (error == -1) {
+			// sysctl error
+			return make_string(nullptr, 0);
+		}
+		// get argv
+		char **argv = (char **)gb_malloc(len);
+		error = sysctl(mib, 4, argv, (size_t *) &len, NULL, 0);
+		if (error == -1) {
+			// sysctl error
+			gb_mfree(argv);
+			return make_string(nullptr, 0);
+		}
+		// copy argv[0] to path_buf
+		len = gb_strlen(argv[0]);
+		if(len < path_buf.count) {
+			gb_memmove(&path_buf[0], argv[0], len);
+		}
+		gb_mfree(argv);
 #endif
-		if(len == 0) {
+		if(len == 0 || len == -1) {
 			return make_string(nullptr, 0);
 		}
 		if (len < path_buf.count) {
@@ -964,6 +1004,8 @@ void init_build_context(TargetMetrics *cross_target) {
 			#endif
 		#elif defined(GB_SYSTEM_FREEBSD)
 			metrics = &target_freebsd_amd64;
+		#elif defined(GB_SYSTEM_OPENBSD)
+			metrics = &target_openbsd_amd64;
 		#elif defined(GB_CPU_ARM)
 			metrics = &target_linux_arm64;
 		#else
@@ -971,13 +1013,13 @@ void init_build_context(TargetMetrics *cross_target) {
 		#endif
 	#else
 		#if defined(GB_SYSTEM_WINDOWS)
-			metrics = &target_windows_386;
+			metrics = &target_windows_i386;
 		#elif defined(GB_SYSTEM_OSX)
 			#error "Build Error: Unsupported architecture"
 		#elif defined(GB_SYSTEM_FREEBSD)
-			metrics = &target_freebsd_386;
+			metrics = &target_freebsd_i386;
 		#else
-			metrics = &target_linux_386;
+			metrics = &target_linux_i386;
 		#endif
 	#endif
 
@@ -1037,6 +1079,9 @@ void init_build_context(TargetMetrics *cross_target) {
 		case TargetOs_freebsd:
 			bc->link_flags = str_lit("-arch x86-64 ");
 			break;
+		case TargetOs_openbsd:
+			bc->link_flags = str_lit("-arch x86-64 ");
+			break;
 		}
 	} else if (bc->metrics.arch == TargetArch_i386) {
 		switch (bc->metrics.os) {
diff --git a/src/check_builtin.cpp b/src/check_builtin.cpp
index 5561da01b..4cd09b8e9 100644
--- a/src/check_builtin.cpp
+++ b/src/check_builtin.cpp
@@ -952,7 +952,7 @@ bool check_builtin_procedure(CheckerContext *c, Operand *operand, Ast *call, i32
 			mode = Addressing_Constant;
 			value = exact_value_i64(at->EnumeratedArray.count);
 			type = t_untyped_integer;
-		} else if (is_type_slice(op_type) && id == BuiltinProc_len) {
+		} else if ((is_type_slice(op_type) || is_type_relative_slice(op_type)) && id == BuiltinProc_len) {
 			mode = Addressing_Value;
 		} else if (is_type_dynamic_array(op_type)) {
 			mode = Addressing_Value;
@@ -1106,7 +1106,7 @@ bool check_builtin_procedure(CheckerContext *c, Operand *operand, Ast *call, i32
 		
 		Selection sel = lookup_field(type, field_name, false);
 		if (sel.entity == nullptr) {
-			gbString type_str = type_to_string(type);
+			gbString type_str = type_to_string_shorthand(type);
 			error(ce->args[0],
 			      "'%s' has no field named '%.*s'", type_str, LIT(field_name));
 			gb_string_free(type_str);
@@ -1118,7 +1118,7 @@ bool check_builtin_procedure(CheckerContext *c, Operand *operand, Ast *call, i32
 			return false;
 		}
 		if (sel.indirect) {
-			gbString type_str = type_to_string(type);
+			gbString type_str = type_to_string_shorthand(type);
 			error(ce->args[0],
 			      "Field '%.*s' is embedded via a pointer in '%s'", LIT(field_name), type_str);
 			gb_string_free(type_str);
@@ -1179,7 +1179,7 @@ bool check_builtin_procedure(CheckerContext *c, Operand *operand, Ast *call, i32
 		
 		Selection sel = lookup_field(type, field_name, false);
 		if (sel.entity == nullptr) {
-			gbString type_str = type_to_string(type);
+			gbString type_str = type_to_string_shorthand(type);
 			error(ce->args[0],
 			      "'%s' has no field named '%.*s'", type_str, LIT(field_name));
 			gb_string_free(type_str);
@@ -1191,7 +1191,7 @@ bool check_builtin_procedure(CheckerContext *c, Operand *operand, Ast *call, i32
 			return false;
 		}
 		if (sel.indirect) {
-			gbString type_str = type_to_string(type);
+			gbString type_str = type_to_string_shorthand(type);
 			error(ce->args[0],
 			      "Field '%.*s' is embedded via a pointer in '%s'", LIT(field_name), type_str);
 			gb_string_free(type_str);
@@ -3514,6 +3514,7 @@ bool check_builtin_procedure(CheckerContext *c, Operand *operand, Ast *call, i32
 			case TargetOs_linux:
 			case TargetOs_essence:
 			case TargetOs_freebsd:
+			case TargetOs_openbsd:
 				switch (build_context.metrics.arch) {
 				case TargetArch_i386:
 				case TargetArch_amd64:
diff --git a/src/check_expr.cpp b/src/check_expr.cpp
index f1bcb4cd9..577f3b07c 100644
--- a/src/check_expr.cpp
+++ b/src/check_expr.cpp
@@ -4470,7 +4470,7 @@ Entity *check_selector(CheckerContext *c, Operand *operand, Ast *node, Type *typ
 
 	if (entity == nullptr) {
 		gbString op_str   = expr_to_string(op_expr);
-		gbString type_str = type_to_string(operand->type);
+		gbString type_str = type_to_string_shorthand(operand->type);
 		gbString sel_str  = expr_to_string(selector);
 		error(op_expr, "'%s' of type '%s' has no field '%s'", op_str, type_str, sel_str);
 
@@ -4511,7 +4511,7 @@ Entity *check_selector(CheckerContext *c, Operand *operand, Ast *node, Type *typ
 		}
 
 		gbString op_str   = expr_to_string(op_expr);
-		gbString type_str = type_to_string(operand->type);
+		gbString type_str = type_to_string_shorthand(operand->type);
 		gbString sel_str  = expr_to_string(selector);
 		error(op_expr, "Cannot access non-constant field '%s' from '%s'", sel_str, op_str);
 		gb_string_free(sel_str);
@@ -4536,7 +4536,7 @@ Entity *check_selector(CheckerContext *c, Operand *operand, Ast *node, Type *typ
 		}
 
 		gbString op_str   = expr_to_string(op_expr);
-		gbString type_str = type_to_string(operand->type);
+		gbString type_str = type_to_string_shorthand(operand->type);
 		gbString sel_str  = expr_to_string(selector);
 		error(op_expr, "Cannot access non-constant field '%s' from '%s'", sel_str, op_str);
 		gb_string_free(sel_str);
@@ -4549,7 +4549,7 @@ Entity *check_selector(CheckerContext *c, Operand *operand, Ast *node, Type *typ
 
 	if (expr_entity != nullptr && is_type_polymorphic(expr_entity->type)) {
 		gbString op_str   = expr_to_string(op_expr);
-		gbString type_str = type_to_string(operand->type);
+		gbString type_str = type_to_string_shorthand(operand->type);
 		gbString sel_str  = expr_to_string(selector);
 		error(op_expr, "Cannot access field '%s' from non-specialized polymorphic type '%s'", sel_str, op_str);
 		gb_string_free(sel_str);
diff --git a/src/checker.cpp b/src/checker.cpp
index b1abdcb8a..ea300afd9 100644
--- a/src/checker.cpp
+++ b/src/checker.cpp
@@ -924,6 +924,7 @@ void init_universal(void) {
 			{"Linux",        TargetOs_linux},
 			{"Essence",      TargetOs_essence},
 			{"FreeBSD",      TargetOs_freebsd},
+			{"OpenBSD",      TargetOs_openbsd},
 			{"WASI",         TargetOs_wasi},
 			{"JS",           TargetOs_js},
 			{"Freestanding", TargetOs_freestanding},
diff --git a/src/common.cpp b/src/common.cpp
index d3ee95b76..aaacda04b 100644
--- a/src/common.cpp
+++ b/src/common.cpp
@@ -848,7 +848,7 @@ ReadDirectoryError read_directory(String path, Array<FileInfo> *fi) {
 
 	return ReadDirectory_None;
 }
-#elif defined(GB_SYSTEM_LINUX) || defined(GB_SYSTEM_OSX) || defined(GB_SYSTEM_FREEBSD)
+#elif defined(GB_SYSTEM_LINUX) || defined(GB_SYSTEM_OSX) || defined(GB_SYSTEM_FREEBSD) || defined(GB_SYSTEM_OPENBSD)
 
 #include <dirent.h>
 
diff --git a/src/gb/gb.h b/src/gb/gb.h
index a9d6378c9..b72a893f7 100644
--- a/src/gb/gb.h
+++ b/src/gb/gb.h
@@ -79,6 +79,10 @@ extern "C" {
 		#ifndef GB_SYSTEM_FREEBSD
 		#define GB_SYSTEM_FREEBSD 1
 		#endif
+	#elif defined(__OpenBSD__)
+		#ifndef GB_SYSTEM_OPENBSD
+		#define GB_SYSTEM_OPENBSD 1
+		#endif
 	#else
 		#error This UNIX operating system is not supported
 	#endif
@@ -199,7 +203,7 @@ extern "C" {
 	#endif
 	#include <stdlib.h> // NOTE(bill): malloc on linux
 	#include <sys/mman.h>
-	#if !defined(GB_SYSTEM_OSX) && !defined(__FreeBSD__)
+	#if !defined(GB_SYSTEM_OSX) && !defined(__FreeBSD__) && !defined(__OpenBSD__)
 		#include <sys/sendfile.h>
 	#endif
 	#include <sys/stat.h>
@@ -235,6 +239,12 @@ extern "C" {
 	#define sendfile(out, in, offset, count) sendfile(out, in, offset, count, NULL, NULL, 0)
 #endif
 
+#if defined(GB_SYSTEM_OPENBSD)
+	#include <stdio.h>
+	#include <pthread_np.h>
+	#define lseek64 lseek
+#endif
+    
 #if defined(GB_SYSTEM_UNIX)
 	#include <semaphore.h>
 #endif
@@ -783,6 +793,13 @@ typedef struct gbAffinity {
 	isize thread_count;
 	isize threads_per_core;
 } gbAffinity;
+#elif defined(GB_SYSTEM_OPENBSD)
+typedef struct gbAffinity {
+	b32   is_accurate;
+	isize core_count;
+	isize thread_count;
+	isize threads_per_core;
+} gbAffinity;
 #else
 #error TODO(bill): Unknown system
 #endif
@@ -3682,6 +3699,30 @@ isize gb_affinity_thread_count_for_core(gbAffinity *a, isize core) {
 	GB_ASSERT(0 <= core && core < a->core_count);
 	return a->threads_per_core;
 }
+
+#elif defined(GB_SYSTEM_OPENBSD)
+#include <unistd.h>
+
+void gb_affinity_init(gbAffinity *a) {
+	a->core_count       = sysconf(_SC_NPROCESSORS_ONLN);
+	a->threads_per_core = 1;
+	a->is_accurate      = a->core_count > 0;
+	a->core_count       = a->is_accurate ? a->core_count : 1;
+	a->thread_count     = a->core_count;
+}
+
+void gb_affinity_destroy(gbAffinity *a) {
+	gb_unused(a);
+}
+
+b32 gb_affinity_set(gbAffinity *a, isize core, isize thread_index) {
+	return true;
+}
+
+isize gb_affinity_thread_count_for_core(gbAffinity *a, isize core) {
+	GB_ASSERT(0 <= core && core < a->core_count);
+	return a->threads_per_core;
+}
 #else
 #error TODO(bill): Unknown system
 #endif
@@ -6025,7 +6066,7 @@ gbFileTime gb_file_last_write_time(char const *filepath) {
 gb_inline b32 gb_file_copy(char const *existing_filename, char const *new_filename, b32 fail_if_exists) {
 #if defined(GB_SYSTEM_OSX)
 	return copyfile(existing_filename, new_filename, NULL, COPYFILE_DATA) == 0;
-#else
+#elif defined(GB_SYSTEM_LINUX) || defined(GB_SYSTEM_FREEBSD)
 	isize size;
 	int existing_fd = open(existing_filename, O_RDONLY, 0);
 	int new_fd      = open(new_filename, O_WRONLY|O_CREAT, 0666);
@@ -6042,6 +6083,49 @@ gb_inline b32 gb_file_copy(char const *existing_filename, char const *new_filena
 	close(existing_fd);
 
 	return size == stat_existing.st_size;
+#else
+	int new_flags = O_WRONLY | O_CREAT;
+	if (fail_if_exists) {
+		new_flags |= O_EXCL;
+	}
+	int existing_fd = open(existing_filename, O_RDONLY, 0);
+	int new_fd      = open(new_filename, new_flags, 0666);
+
+	struct stat stat_existing;
+	if (fstat(existing_fd, &stat_existing) == -1) {
+		return 0;
+	}
+
+	size_t bsize = stat_existing.st_blksize > BUFSIZ ? stat_existing.st_blksize : BUFSIZ;
+	char *buf = (char *)malloc(bsize);
+	if (buf == NULL) {
+		close(new_fd);
+		close(existing_fd);
+		return 0;
+	}
+
+	isize size = 0;
+	ssize_t nread, nwrite, offset;
+	while ((nread = read(existing_fd, buf, bsize)) != -1 && nread != 0) {
+		for (offset = 0; nread; nread -= nwrite, offset += nwrite) {
+			if ((nwrite = write(new_fd, buf + offset, nread)) == -1 || nwrite == 0) {
+				free(buf);
+				close(new_fd);
+				close(existing_fd);
+				return 0;
+			}
+			size += nwrite;
+		}
+	}
+	
+	free(buf);
+	close(new_fd);
+	close(existing_fd);
+
+	if (nread == -1) {
+		return 0;
+	}
+	return size == stat_existing.st_size;
 #endif
 }
 
diff --git a/src/llvm_backend.cpp b/src/llvm_backend.cpp
index ed3ae7dfc..b6c1693d8 100644
--- a/src/llvm_backend.cpp
+++ b/src/llvm_backend.cpp
@@ -1325,6 +1325,10 @@ void lb_generate_code(lbGenerator *gen) {
 
 	switch (build_context.reloc_mode) {
 	case RelocMode_Default:
+		if (build_context.metrics.os == TargetOs_openbsd) {
+			// Always use PIC for OpenBSD: it defaults to PIE
+			reloc_mode = LLVMRelocPIC;
+		}
 		break;
 	case RelocMode_Static:
 		reloc_mode = LLVMRelocStatic;
diff --git a/src/llvm_backend_expr.cpp b/src/llvm_backend_expr.cpp
index 18b66572d..4294747b9 100644
--- a/src/llvm_backend_expr.cpp
+++ b/src/llvm_backend_expr.cpp
@@ -2202,6 +2202,21 @@ lbValue lb_emit_comp(lbProcedure *p, TokenKind op_kind, lbValue left, lbValue ri
 		}
 	}
 
+	if (is_type_matrix(a) && (op_kind == Token_CmpEq || op_kind == Token_NotEq)) {
+		Type *tl = base_type(a);
+		lbValue lhs = lb_address_from_load_or_generate_local(p, left);
+		lbValue rhs = lb_address_from_load_or_generate_local(p, right);
+
+
+		// TODO(bill): Test to see if this is actually faster!!!!
+		auto args = array_make<lbValue>(permanent_allocator(), 3);
+		args[0] = lb_emit_conv(p, lhs, t_rawptr);
+		args[1] = lb_emit_conv(p, rhs, t_rawptr);
+		args[2] = lb_const_int(p->module, t_int, type_size_of(tl));
+		lbValue val = lb_emit_runtime_call(p, "memory_compare", args);
+		lbValue res = lb_emit_comp(p, op_kind, val, lb_const_nil(p->module, val.type));
+		return lb_emit_conv(p, res, t_bool);
+	}
 	if (is_type_array(a) || is_type_enumerated_array(a)) {
 		Type *tl = base_type(a);
 		lbValue lhs = lb_address_from_load_or_generate_local(p, left);
diff --git a/src/llvm_backend_proc.cpp b/src/llvm_backend_proc.cpp
index 053ee2fb2..27a6ec209 100644
--- a/src/llvm_backend_proc.cpp
+++ b/src/llvm_backend_proc.cpp
@@ -1046,7 +1046,7 @@ lbValue lb_build_builtin_proc(lbProcedure *p, Ast *expr, TypeAndValue const &tv,
 			return lb_string_len(p, v);
 		} else if (is_type_array(t)) {
 			GB_PANIC("Array lengths are constant");
-		} else if (is_type_slice(t)) {
+		} else if (is_type_slice(t) || is_type_relative_slice(t)) {
 			return lb_slice_len(p, v);
 		} else if (is_type_dynamic_array(t)) {
 			return lb_dynamic_array_len(p, v);
@@ -1072,7 +1072,7 @@ lbValue lb_build_builtin_proc(lbProcedure *p, Ast *expr, TypeAndValue const &tv,
 			GB_PANIC("Unreachable");
 		} else if (is_type_array(t)) {
 			GB_PANIC("Array lengths are constant");
-		} else if (is_type_slice(t)) {
+		} else if (is_type_slice(t) || is_type_relative_slice(t)) {
 			return lb_slice_len(p, v);
 		} else if (is_type_dynamic_array(t)) {
 			return lb_dynamic_array_cap(p, v);
@@ -1406,14 +1406,23 @@ lbValue lb_build_builtin_proc(lbProcedure *p, Ast *expr, TypeAndValue const &tv,
 
 	case BuiltinProc_read_cycle_counter:
 		{
-			char const *name = "llvm.readcyclecounter";
-			unsigned id = LLVMLookupIntrinsicID(name, gb_strlen(name));
-			GB_ASSERT_MSG(id != 0, "Unable to find %s", name);
-			LLVMValueRef ip = LLVMGetIntrinsicDeclaration(p->module->mod, id, nullptr, 0);
-
 			lbValue res = {};
-			res.value = LLVMBuildCall(p->builder, ip, nullptr, 0, "");
 			res.type = tv.type;
+
+			if (build_context.metrics.arch == TargetArch_arm64) {
+				LLVMTypeRef func_type = LLVMFunctionType(LLVMInt64TypeInContext(p->module->ctx), nullptr, 0, false);
+				bool has_side_effects = false;
+				LLVMValueRef the_asm = llvm_get_inline_asm(func_type, str_lit("mrs x9, cntvct_el0"), str_lit("=r"), has_side_effects);
+				GB_ASSERT(the_asm != nullptr);
+				res.value = LLVMBuildCall2(p->builder, func_type, the_asm, nullptr, 0, "");
+			} else {
+				char const *name = "llvm.readcyclecounter";
+				unsigned id = LLVMLookupIntrinsicID(name, gb_strlen(name));
+				GB_ASSERT_MSG(id != 0, "Unable to find %s", name);
+				LLVMValueRef ip = LLVMGetIntrinsicDeclaration(p->module->mod, id, nullptr, 0);
+
+				res.value = LLVMBuildCall(p->builder, ip, nullptr, 0, "");
+			}
 			return res;
 		}
 
diff --git a/src/llvm_backend_utility.cpp b/src/llvm_backend_utility.cpp
index fb52a9bd6..399d1632d 100644
--- a/src/llvm_backend_utility.cpp
+++ b/src/llvm_backend_utility.cpp
@@ -1387,7 +1387,7 @@ lbValue lb_slice_elem(lbProcedure *p, lbValue slice) {
 	return lb_emit_struct_ev(p, slice, 0);
 }
 lbValue lb_slice_len(lbProcedure *p, lbValue slice) {
-	GB_ASSERT(is_type_slice(slice.type));
+	GB_ASSERT(is_type_slice(slice.type) || is_type_relative_slice(slice.type));
 	return lb_emit_struct_ev(p, slice, 1);
 }
 lbValue lb_dynamic_array_elem(lbProcedure *p, lbValue da) {
@@ -1793,7 +1793,7 @@ LLVMValueRef llvm_get_inline_asm(LLVMTypeRef func_type, String const &str, Strin
 	return LLVMGetInlineAsm(func_type,
 		cast(char *)str.text, cast(size_t)str.len,
 		cast(char *)clobbers.text, cast(size_t)clobbers.len,
-		/*HasSideEffects*/true, /*IsAlignStack*/false,
+		has_side_effects, is_align_stack,
 		dialect
 	#if LLVM_VERSION_MAJOR >= 13 
 		, /*CanThrow*/false
diff --git a/src/main.cpp b/src/main.cpp
index 5a77e09d8..63b2c8386 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -384,7 +384,7 @@ i32 linker_stage(lbGenerator *gen) {
 			// NOTE(zangent): Sometimes, you have to use -framework on MacOS.
 			//   This allows you to specify '-f' in a #foreign_system_library,
 			//   without having to implement any new syntax specifically for MacOS.
-			#if defined(GB_SYSTEM_OSX)
+			if (build_context.metrics.os == TargetOs_darwin) {
 				if (string_ends_with(lib, str_lit(".framework"))) {
 					// framework thingie
 					String lib_name = lib;
@@ -400,14 +400,14 @@ i32 linker_stage(lbGenerator *gen) {
 					// dynamic or static system lib, just link regularly searching system library paths
 					lib_str = gb_string_append_fmt(lib_str, " -l%.*s ", LIT(lib));
 				}
-			#else
+			} else {
 				// NOTE(vassvik): static libraries (.a files) in linux can be linked to directly using the full path,
 				//                since those are statically linked to at link time. shared libraries (.so) has to be
 				//                available at runtime wherever the executable is run, so we make require those to be
 				//                local to the executable (unless the system collection is used, in which case we search
 				//                the system library paths for the library file).
-				if (string_ends_with(lib, str_lit(".a"))) {
-					// static libs, absolute full path relative to the file in which the lib was imported from
+				if (string_ends_with(lib, str_lit(".a")) || string_ends_with(lib, str_lit(".o"))) {
+					// static libs and object files, absolute full path relative to the file in which the lib was imported from
 					lib_str = gb_string_append_fmt(lib_str, " -l:\"%.*s\" ", LIT(lib));
 				} else if (string_ends_with(lib, str_lit(".so"))) {
 					// dynamic lib, relative path to executable
@@ -418,7 +418,7 @@ i32 linker_stage(lbGenerator *gen) {
 					// dynamic or static system lib, just link regularly searching system library paths
 					lib_str = gb_string_append_fmt(lib_str, " -l%.*s ", LIT(lib));
 				}
-			#endif
+			}
 		}
 
 		gbString object_files = gb_string_make(heap_allocator(), "");
@@ -456,14 +456,15 @@ i32 linker_stage(lbGenerator *gen) {
 			// line arguments prepared previously are incompatible with ld.
 			//
 			// Shared libraries are .dylib on MacOS and .so on Linux.
-			#if defined(GB_SYSTEM_OSX)
+			if (build_context.metrics.os == TargetOs_darwin) {
 				output_ext = STR_LIT(".dylib");
-			#else
+			} else {
 				output_ext = STR_LIT(".so");
-			#endif
+			}
 			link_settings = gb_string_appendc(link_settings, "-Wl,-init,'_odin_entry_point' ");
 			link_settings = gb_string_appendc(link_settings, "-Wl,-fini,'_odin_exit_point' ");
-		} else {
+		} else if (build_context.metrics.os != TargetOs_openbsd) {
+			// OpenBSD defaults to PIE executable. do not pass -no-pie for it.
 			link_settings = gb_string_appendc(link_settings, "-no-pie ");
 		}
 		if (build_context.out_filepath.len > 0) {
@@ -474,34 +475,39 @@ i32 linker_stage(lbGenerator *gen) {
 			}
 		}
 
-		result = system_exec_command_line_app("ld-link",
-			"clang -Wno-unused-command-line-argument %s -o \"%.*s%.*s\" %s "
-			" %s "
-			" %.*s "
-			" %.*s "
-			" %s "
-			#if defined(GB_SYSTEM_OSX)
-				// This sets a requirement of Mountain Lion and up, but the compiler doesn't work without this limit.
-				// NOTE: If you change this (although this minimum is as low as you can go with Odin working)
-				//       make sure to also change the 'mtriple' param passed to 'opt'
-				#if defined(GB_CPU_ARM)
-				" -mmacosx-version-min=12.0.0 "
-				#else
-				" -mmacosx-version-min=10.8.0 "
-				#endif
-				// This points the linker to where the entry point is
-				" -e _main "
-			#endif
-			, object_files, LIT(output_base), LIT(output_ext),
-			#if defined(GB_SYSTEM_OSX)
-			  "-lSystem -lm -Wl,-syslibroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -L/usr/local/lib",
-			#else
-			  "-lc -lm",
-			#endif
-			lib_str,
-			LIT(build_context.link_flags),
-			LIT(build_context.extra_linker_flags),
-			link_settings);
+		gbString platform_lib_str = gb_string_make(heap_allocator(), "");
+		defer (gb_string_free(platform_lib_str));
+		if (build_context.metrics.os == TargetOs_darwin) {
+			platform_lib_str = gb_string_appendc(platform_lib_str, "-lSystem -lm -Wl,-syslibroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -L/usr/local/lib");
+		} else {
+			platform_lib_str = gb_string_appendc(platform_lib_str, "-lc -lm");
+		}
+
+		if (build_context.metrics.os == TargetOs_darwin) {
+			// This sets a requirement of Mountain Lion and up, but the compiler doesn't work without this limit.
+			// NOTE: If you change this (although this minimum is as low as you can go with Odin working)
+			//       make sure to also change the 'mtriple' param passed to 'opt'
+			if (build_context.metrics.arch == TargetArch_arm64) {
+				link_settings = gb_string_appendc(link_settings, " -mmacosx-version-min=12.0.0 ");
+			} else {
+				link_settings = gb_string_appendc(link_settings, " -mmacosx-version-min=10.8.0 ");
+			}
+			// This points the linker to where the entry point is
+			link_settings = gb_string_appendc(link_settings, " -e _main ");
+		}
+
+		gbString link_command_line = gb_string_make(heap_allocator(), "clang -Wno-unused-command-line-argument ");
+		defer (gb_string_free(link_command_line));
+
+		link_command_line = gb_string_appendc(link_command_line, object_files);
+		link_command_line = gb_string_append_fmt(link_command_line, " -o \"%.*s%.*s\" ", LIT(output_base), LIT(output_ext));
+		link_command_line = gb_string_append_fmt(link_command_line, " %s ", platform_lib_str);
+		link_command_line = gb_string_append_fmt(link_command_line, " %s ", lib_str);
+		link_command_line = gb_string_append_fmt(link_command_line, " %.*s ", LIT(build_context.link_flags));
+		link_command_line = gb_string_append_fmt(link_command_line, " %.*s ", LIT(build_context.extra_linker_flags));
+		link_command_line = gb_string_append_fmt(link_command_line, " %s ", link_settings);
+
+		result = system_exec_command_line_app("ld-link", link_command_line);
 
 		if (result) {
 			return result;
diff --git a/src/parser.cpp b/src/parser.cpp
index 9659e8c18..94a585f35 100644
--- a/src/parser.cpp
+++ b/src/parser.cpp
@@ -1538,7 +1538,7 @@ void fix_advance_to_next_stmt(AstFile *f) {
 Token expect_closing(AstFile *f, TokenKind kind, String context) {
 	if (f->curr_token.kind != kind &&
 	    f->curr_token.kind == Token_Semicolon &&
-	    f->curr_token.string == "\n") {
+	    (f->curr_token.string == "\n" || f->curr_token.kind == Token_EOF)) {
 		Token tok = f->prev_token;
 		tok.pos.column += cast(i32)tok.string.len;
 		syntax_error(tok, "Missing ',' before newline in %.*s", LIT(context));
@@ -1560,6 +1560,7 @@ void assign_removal_flag_to_semicolon(AstFile *f) {
 			switch (curr_token->kind) {
 			case Token_CloseBrace:
 			case Token_CloseParen:
+			case Token_EOF:
 				ok = true;
 				break;
 			}
@@ -5719,6 +5720,22 @@ ParseFileError parse_packages(Parser *p, String init_filename) {
 			error_line("Expected either a directory or a .odin file, got '%.*s'\n", LIT(init_filename));
 			return ParseFile_WrongExtension;
 		}
+	} else if (init_fullpath.len != 0) {
+		String path = init_fullpath;
+		if (path[path.len-1] == '/') {
+			path.len -= 1;
+		}
+		if ((build_context.command_kind & Command__does_build) &&
+		    build_context.build_mode == BuildMode_Executable) {
+			String short_path = filename_from_path(path);
+			char *cpath = alloc_cstring(heap_allocator(), short_path);
+			defer (gb_free(heap_allocator(), cpath));
+
+			if (gb_file_exists(cpath)) {
+			    	error_line("Please specify the executable name with -out:<string> as a directory exists with the same name in the current working directory");
+			    	return ParseFile_DirectoryAlreadyExists;
+			}
+		}
 	}
 	
 
diff --git a/src/parser.hpp b/src/parser.hpp
index f6791a291..c33d1520b 100644
--- a/src/parser.hpp
+++ b/src/parser.hpp
@@ -46,6 +46,7 @@ enum ParseFileError {
 	ParseFile_InvalidToken,
 	ParseFile_GeneralError,
 	ParseFile_FileTooLarge,
+	ParseFile_DirectoryAlreadyExists,
 
 	ParseFile_Count,
 };
diff --git a/src/threading.cpp b/src/threading.cpp
index 50d0dfed1..63e3415b2 100644
--- a/src/threading.cpp
+++ b/src/threading.cpp
@@ -486,7 +486,7 @@ void thread_set_name(Thread *t, char const *name) {
 #elif defined(GB_SYSTEM_OSX)
 	// TODO(bill): Test if this works
 	pthread_setname_np(name);
-#elif defined(GB_SYSTEM_FREEBSD)
+#elif defined(GB_SYSTEM_FREEBSD) || defined(GB_SYSTEM_OPENBSD)
 	pthread_set_name_np(t->posix_handle, name);
 #else
 	// TODO(bill): Test if this works
diff --git a/src/types.cpp b/src/types.cpp
index 74080334a..58ccdf5b9 100644
--- a/src/types.cpp
+++ b/src/types.cpp
@@ -703,7 +703,7 @@ struct TypePath;
 i64      type_size_of         (Type *t);
 i64      type_align_of        (Type *t);
 i64      type_offset_of       (Type *t, i32 index);
-gbString type_to_string       (Type *type);
+gbString type_to_string       (Type *type, bool shorthand=false);
 i64      type_size_of_internal(Type *t, TypePath *path);
 void     init_map_internal_types(Type *type);
 Type *   bit_set_to_int(Type *t);
@@ -3936,7 +3936,7 @@ Type *alloc_type_proc_from_types(Type **param_types, unsigned param_count, Type
 
 
 
-gbString write_type_to_string(gbString str, Type *type) {
+gbString write_type_to_string(gbString str, Type *type, bool shorthand=false) {
 	if (type == nullptr) {
 		return gb_string_appendc(str, "<no type>");
 	}
@@ -4051,15 +4051,21 @@ gbString write_type_to_string(gbString str, Type *type) {
 		if (type->Struct.is_raw_union) str = gb_string_appendc(str, " #raw_union");
 		if (type->Struct.custom_align != 0) str = gb_string_append_fmt(str, " #align %d", cast(int)type->Struct.custom_align);
 		str = gb_string_appendc(str, " {");
-		for_array(i, type->Struct.fields) {
-			Entity *f = type->Struct.fields[i];
-			GB_ASSERT(f->kind == Entity_Variable);
-			if (i > 0) {
-				str = gb_string_appendc(str, ", ");
+
+
+		if (shorthand && type->Struct.fields.count > 16) {
+			str = gb_string_append_fmt(str, "%lld fields...", cast(long long)type->Struct.fields.count);
+		} else {
+			for_array(i, type->Struct.fields) {
+				Entity *f = type->Struct.fields[i];
+				GB_ASSERT(f->kind == Entity_Variable);
+				if (i > 0) {
+					str = gb_string_appendc(str, ", ");
+				}
+				str = gb_string_append_length(str, f->token.string.text, f->token.string.len);
+				str = gb_string_appendc(str, ": ");
+				str = write_type_to_string(str, f->type);
 			}
-			str = gb_string_append_length(str, f->token.string.text, f->token.string.len);
-			str = gb_string_appendc(str, ": ");
-			str = write_type_to_string(str, f->type);
 		}
 		str = gb_string_append_rune(str, '}');
 	} break;
@@ -4234,13 +4240,16 @@ gbString write_type_to_string(gbString str, Type *type) {
 }
 
 
-gbString type_to_string(Type *type, gbAllocator allocator) {
-	return write_type_to_string(gb_string_make(allocator, ""), type);
+gbString type_to_string(Type *type, gbAllocator allocator, bool shorthand=false) {
+	return write_type_to_string(gb_string_make(allocator, ""), type, shorthand);
 }
-gbString type_to_string(Type *type) {
-	return write_type_to_string(gb_string_make(heap_allocator(), ""), type);
+gbString type_to_string(Type *type, bool shorthand) {
+	return write_type_to_string(gb_string_make(heap_allocator(), ""), type, shorthand);
 }
 
+gbString type_to_string_shorthand(Type *type) {
+	return type_to_string(type, true);
+}