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More MachO.zig fixes ensuring 32bit compat

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Partial resolution to #7614.
This commit is contained in:
Jakub Konka 2020-12-31 14:57:05 +01:00
parent 102e45e04f
commit fbf269cc47
1 changed files with 12 additions and 4 deletions
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16
src/link/MachO.zig
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@ -1632,10 +1632,14 @@ pub fn populateMissingMetadata(self: *MachO) !void {
} }
if (self.dylinker_cmd_index == null) { if (self.dylinker_cmd_index == null) {
self.dylinker_cmd_index = @intCast(u16, self.load_commands.items.len); self.dylinker_cmd_index = @intCast(u16, self.load_commands.items.len);
const cmdsize = mem.alignForwardGeneric(u64, @sizeOf(macho.dylinker_command) + mem.lenZ(DEFAULT_DYLD_PATH), @sizeOf(u64)); const cmdsize = @intCast(u32, mem.alignForwardGeneric(
u64,
@sizeOf(macho.dylinker_command) + mem.lenZ(DEFAULT_DYLD_PATH),
@sizeOf(u64),
));
var dylinker_cmd = emptyGenericCommandWithData(macho.dylinker_command{ var dylinker_cmd = emptyGenericCommandWithData(macho.dylinker_command{
.cmd = macho.LC_LOAD_DYLINKER, .cmd = macho.LC_LOAD_DYLINKER,
.cmdsize = @intCast(u32, cmdsize), .cmdsize = cmdsize,
.name = @sizeOf(macho.dylinker_command), .name = @sizeOf(macho.dylinker_command),
}); });
dylinker_cmd.data = try self.base.allocator.alloc(u8, cmdsize - dylinker_cmd.inner.name); dylinker_cmd.data = try self.base.allocator.alloc(u8, cmdsize - dylinker_cmd.inner.name);
@ -1647,13 +1651,17 @@ pub fn populateMissingMetadata(self: *MachO) !void {
} }
if (self.libsystem_cmd_index == null) { if (self.libsystem_cmd_index == null) {
self.libsystem_cmd_index = @intCast(u16, self.load_commands.items.len); self.libsystem_cmd_index = @intCast(u16, self.load_commands.items.len);
const cmdsize = mem.alignForwardGeneric(u64, @sizeOf(macho.dylib_command) + mem.lenZ(LIB_SYSTEM_PATH), @sizeOf(u64)); const cmdsize = @intCast(u32, mem.alignForwardGeneric(
u64,
@sizeOf(macho.dylib_command) + mem.lenZ(LIB_SYSTEM_PATH),
@sizeOf(u64),
));
// TODO Find a way to work out runtime version from the OS version triple stored in std.Target. // TODO Find a way to work out runtime version from the OS version triple stored in std.Target.
// In the meantime, we're gonna hardcode to the minimum compatibility version of 0.0.0. // In the meantime, we're gonna hardcode to the minimum compatibility version of 0.0.0.
const min_version = 0x0; const min_version = 0x0;
var dylib_cmd = emptyGenericCommandWithData(macho.dylib_command{ var dylib_cmd = emptyGenericCommandWithData(macho.dylib_command{
.cmd = macho.LC_LOAD_DYLIB, .cmd = macho.LC_LOAD_DYLIB,
.cmdsize = @intCast(u32, cmdsize), .cmdsize = cmdsize,
.dylib = .{ .dylib = .{
.name = @sizeOf(macho.dylib_command), .name = @sizeOf(macho.dylib_command),
.timestamp = 2, // not sure why not simply 0; this is reverse engineered from Mach-O files .timestamp = 2, // not sure why not simply 0; this is reverse engineered from Mach-O files