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b9224c172f
When outputting the names section, we should output the actual symbol name rather than the import name. This makes sure that symbols with an explicit name set have the correct name but retain the import name too. We also now correctly mangle the name of an extern function with an explicit library name. This ensures that functions that have a different library name, but the same import/function name, can be resolved correctly with other modules and don't resolve to the same symbol.
40 lines
1.6 KiB
Zig
40 lines
1.6 KiB
Zig
const std = @import("std");
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const Builder = std.build.Builder;
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pub fn build(b: *Builder) void {
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const test_step = b.step("test", "Test");
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test_step.dependOn(b.getInstallStep());
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const lib = b.addSharedLibrary("lib", "lib.zig", .unversioned);
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lib.setBuildMode(.ReleaseSafe); // to make the output deterministic in address positions
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lib.setTarget(.{ .cpu_arch = .wasm32, .os_tag = .freestanding });
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lib.use_lld = false;
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lib.export_symbol_names = &.{ "foo", "bar" };
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lib.global_base = 0; // put data section at address 0 to make data symbols easier to parse
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const check_lib = lib.checkObject(.wasm);
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check_lib.checkStart("Section global");
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check_lib.checkNext("entries 3");
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check_lib.checkNext("type i32"); // stack pointer so skip other fields
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check_lib.checkNext("type i32");
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check_lib.checkNext("mutable false");
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check_lib.checkNext("i32.const {foo_address}");
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check_lib.checkNext("type i32");
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check_lib.checkNext("mutable false");
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check_lib.checkNext("i32.const {bar_address}");
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check_lib.checkComputeCompare("foo_address", .{ .op = .eq, .value = .{ .literal = 0 } });
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check_lib.checkComputeCompare("bar_address", .{ .op = .eq, .value = .{ .literal = 4 } });
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check_lib.checkStart("Section export");
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check_lib.checkNext("entries 3");
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check_lib.checkNext("name foo");
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check_lib.checkNext("kind global");
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check_lib.checkNext("index 1");
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check_lib.checkNext("name bar");
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check_lib.checkNext("kind global");
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check_lib.checkNext("index 2");
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test_step.dependOn(&check_lib.step);
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}
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