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-rw-r--r--std/build.zig31
-rw-r--r--std/debug.zig2
-rw-r--r--std/special/compiler_rt.zig3
-rw-r--r--std/special/compiler_rt/divti3.zig1
-rw-r--r--std/special/compiler_rt/muldi3.zig54
-rw-r--r--std/special/compiler_rt/muldi3_test.zig51
6 files changed, 129 insertions, 13 deletions
diff --git a/std/build.zig b/std/build.zig
index fc0786094d..3a0c34c8d1 100644
--- a/std/build.zig
+++ b/std/build.zig
@@ -41,9 +41,11 @@ pub const Builder = struct {
env_map: *BufMap,
top_level_steps: ArrayList(*TopLevelStep),
install_prefix: ?[]const u8,
- search_prefixes: ArrayList([]const u8),
+ dest_dir: ?[]const u8,
lib_dir: ?[]const u8,
exe_dir: ?[]const u8,
+ install_path: []const u8,
+ search_prefixes: ArrayList([]const u8),
installed_files: ArrayList(InstalledFile),
build_root: []const u8,
cache_root: []const u8,
@@ -125,10 +127,11 @@ pub const Builder = struct {
.top_level_steps = ArrayList(*TopLevelStep).init(allocator),
.default_step = undefined,
.env_map = env_map,
- .install_prefix = null,
.search_prefixes = ArrayList([]const u8).init(allocator),
+ .install_prefix = null,
.lib_dir = null,
.exe_dir = null,
+ .dest_dir = env_map.get("DESTDIR"),
.installed_files = ArrayList(InstalledFile).init(allocator),
.install_tls = TopLevelStep{
.step = Step.initNoOp("install", allocator),
@@ -142,6 +145,7 @@ pub const Builder = struct {
.is_release = false,
.override_std_dir = null,
.override_lib_dir = null,
+ .install_path = undefined,
};
try self.top_level_steps.append(&self.install_tls);
try self.top_level_steps.append(&self.uninstall_tls);
@@ -164,14 +168,19 @@ pub const Builder = struct {
}
fn resolveInstallPrefix(self: *Builder) void {
- const prefix = if (self.install_prefix) |prefix| prefix else blk: {
- const prefix = self.cache_root;
- self.install_prefix = prefix;
- break :blk prefix;
- };
-
- self.lib_dir = fs.path.join(self.allocator, [_][]const u8{ prefix, "lib" }) catch unreachable;
- self.exe_dir = fs.path.join(self.allocator, [_][]const u8{ prefix, "bin" }) catch unreachable;
+ if (self.dest_dir) |dest_dir| {
+ const install_prefix = self.install_prefix orelse "/usr";
+ self.install_path = fs.path.join(self.allocator, [_][]const u8{ dest_dir, install_prefix }) catch unreachable;
+ } else {
+ const install_prefix = self.install_prefix orelse blk: {
+ const p = self.cache_root;
+ self.install_prefix = p;
+ break :blk p;
+ };
+ self.install_path = install_prefix;
+ }
+ self.lib_dir = fs.path.join(self.allocator, [_][]const u8{ self.install_path, "lib" }) catch unreachable;
+ self.exe_dir = fs.path.join(self.allocator, [_][]const u8{ self.install_path, "bin" }) catch unreachable;
}
pub fn addExecutable(self: *Builder, name: []const u8, root_src: ?[]const u8) *LibExeObjStep {
@@ -884,7 +893,7 @@ pub const Builder = struct {
fn getInstallPath(self: *Builder, dir: InstallDir, dest_rel_path: []const u8) []const u8 {
const base_dir = switch (dir) {
- .Prefix => self.install_prefix.?,
+ .Prefix => self.install_path,
.Bin => self.exe_dir.?,
.Lib => self.lib_dir.?,
};
diff --git a/std/debug.zig b/std/debug.zig
index c416944860..7d1fd6ce47 100644
--- a/std/debug.zig
+++ b/std/debug.zig
@@ -2353,7 +2353,7 @@ pub fn attachSegfaultHandler() void {
fn resetSegfaultHandler() void {
if (windows.is_the_target) {
if (windows_segfault_handle) |handle| {
- assert(windows.kernel32.RemoveVectoredExceptionHandler() != 0);
+ assert(windows.kernel32.RemoveVectoredExceptionHandler(handle) != 0);
windows_segfault_handle = null;
}
return;
diff --git a/std/special/compiler_rt.zig b/std/special/compiler_rt.zig
index 5064e9db29..a5bbefa1db 100644
--- a/std/special/compiler_rt.zig
+++ b/std/special/compiler_rt.zig
@@ -127,6 +127,7 @@ comptime {
@export("__udivmoddi4", @import("compiler_rt/udivmoddi4.zig").__udivmoddi4, linkage);
@export("__popcountdi2", @import("compiler_rt/popcountdi2.zig").__popcountdi2, linkage);
+ @export("__muldi3", @import("compiler_rt/muldi3.zig").__muldi3, linkage);
@export("__divmoddi4", __divmoddi4, linkage);
@export("__divsi3", __divsi3, linkage);
@export("__divdi3", __divdi3, linkage);
@@ -147,6 +148,8 @@ comptime {
@export("__aeabi_unwind_cpp_pr1", __aeabi_unwind_cpp_pr1, linkage);
@export("__aeabi_unwind_cpp_pr2", __aeabi_unwind_cpp_pr2, linkage);
+ @export("__aeabi_lmul", @import("compiler_rt/muldi3.zig").__muldi3, linkage);
+
@export("__aeabi_ldivmod", __aeabi_ldivmod, linkage);
@export("__aeabi_uldivmod", __aeabi_uldivmod, linkage);
diff --git a/std/special/compiler_rt/divti3.zig b/std/special/compiler_rt/divti3.zig
index d5b2778a34..477ce2cb98 100644
--- a/std/special/compiler_rt/divti3.zig
+++ b/std/special/compiler_rt/divti3.zig
@@ -1,6 +1,5 @@
const udivmod = @import("udivmod.zig").udivmod;
const builtin = @import("builtin");
-const compiler_rt = @import("../compiler_rt.zig");
pub extern fn __divti3(a: i128, b: i128) i128 {
@setRuntimeSafety(builtin.is_test);
diff --git a/std/special/compiler_rt/muldi3.zig b/std/special/compiler_rt/muldi3.zig
new file mode 100644
index 0000000000..7a955120f5
--- /dev/null
+++ b/std/special/compiler_rt/muldi3.zig
@@ -0,0 +1,54 @@
+const builtin = @import("builtin");
+
+// Ported from
+// https://github.com/llvm/llvm-project/blob/552c2c09d354a3ad9c1c9647e0a3bb5099c31088/compiler-rt/lib/builtins/muldi3.c
+
+const dwords = extern union {
+ all: i64,
+ s: switch (builtin.endian) {
+ .Little => extern struct {
+ low: u32,
+ high: u32,
+ },
+ .Big => extern struct {
+ high: u32,
+ low: u32,
+ },
+ },
+};
+
+fn __muldsi3(a: u32, b: u32) i64 {
+ @setRuntimeSafety(builtin.is_test);
+
+ const bits_in_word_2 = @sizeOf(i32) * 8 / 2;
+ const lower_mask = (~u32(0)) >> bits_in_word_2;
+
+ var r: dwords = undefined;
+ r.s.low = (a & lower_mask) *% (b & lower_mask);
+ var t: u32 = r.s.low >> bits_in_word_2;
+ r.s.low &= lower_mask;
+ t += (a >> bits_in_word_2) *% (b & lower_mask);
+ r.s.low +%= (t & lower_mask) << bits_in_word_2;
+ r.s.high = t >> bits_in_word_2;
+ t = r.s.low >> bits_in_word_2;
+ r.s.low &= lower_mask;
+ t +%= (b >> bits_in_word_2) *% (a & lower_mask);
+ r.s.low +%= (t & lower_mask) << bits_in_word_2;
+ r.s.high +%= t >> bits_in_word_2;
+ r.s.high +%= (a >> bits_in_word_2) *% (b >> bits_in_word_2);
+ return r.all;
+}
+
+pub extern fn __muldi3(a: i64, b: i64) i64 {
+ @setRuntimeSafety(builtin.is_test);
+
+ const x = dwords{ .all = a };
+ const y = dwords{ .all = b };
+ var r = dwords{ .all = __muldsi3(x.s.low, y.s.low) };
+ r.s.high +%= x.s.high *% y.s.low +% x.s.low *% y.s.high;
+ return r.all;
+}
+
+test "import muldi3" {
+ _ = @import("muldi3_test.zig");
+}
diff --git a/std/special/compiler_rt/muldi3_test.zig b/std/special/compiler_rt/muldi3_test.zig
new file mode 100644
index 0000000000..db4daf1e1e
--- /dev/null
+++ b/std/special/compiler_rt/muldi3_test.zig
@@ -0,0 +1,51 @@
+const __muldi3 = @import("muldi3.zig").__muldi3;
+const testing = @import("std").testing;
+
+fn test__muldi3(a: i64, b: i64, expected: i64) void {
+ const x = __muldi3(a, b);
+ testing.expect(x == expected);
+}
+
+test "muldi3" {
+ test__muldi3(0, 0, 0);
+ test__muldi3(0, 1, 0);
+ test__muldi3(1, 0, 0);
+ test__muldi3(0, 10, 0);
+ test__muldi3(10, 0, 0);
+ test__muldi3(0, 81985529216486895, 0);
+ test__muldi3(81985529216486895, 0, 0);
+
+ test__muldi3(0, -1, 0);
+ test__muldi3(-1, 0, 0);
+ test__muldi3(0, -10, 0);
+ test__muldi3(-10, 0, 0);
+ test__muldi3(0, -81985529216486895, 0);
+ test__muldi3(-81985529216486895, 0, 0);
+
+ test__muldi3(1, 1, 1);
+ test__muldi3(1, 10, 10);
+ test__muldi3(10, 1, 10);
+ test__muldi3(1, 81985529216486895, 81985529216486895);
+ test__muldi3(81985529216486895, 1, 81985529216486895);
+
+ test__muldi3(1, -1, -1);
+ test__muldi3(1, -10, -10);
+ test__muldi3(-10, 1, -10);
+ test__muldi3(1, -81985529216486895, -81985529216486895);
+ test__muldi3(-81985529216486895, 1, -81985529216486895);
+
+ test__muldi3(3037000499, 3037000499, 9223372030926249001);
+ test__muldi3(-3037000499, 3037000499, -9223372030926249001);
+ test__muldi3(3037000499, -3037000499, -9223372030926249001);
+ test__muldi3(-3037000499, -3037000499, 9223372030926249001);
+
+ test__muldi3(4398046511103, 2097152, 9223372036852678656);
+ test__muldi3(-4398046511103, 2097152, -9223372036852678656);
+ test__muldi3(4398046511103, -2097152, -9223372036852678656);
+ test__muldi3(-4398046511103, -2097152, 9223372036852678656);
+
+ test__muldi3(2097152, 4398046511103, 9223372036852678656);
+ test__muldi3(-2097152, 4398046511103, -9223372036852678656);
+ test__muldi3(2097152, -4398046511103, -9223372036852678656);
+ test__muldi3(-2097152, -4398046511103, 9223372036852678656);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-12-28 04:22:30 +0000