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30f2bb8464
When we're compiling compiler_rt for any WebAssembly target, we do not want to expose all the compiler-rt functions to the host runtime. By setting the visibility of all exports to `hidden`, we allow the linker to resolve the symbols during linktime, while not expose the functions to the host runtime. This also means the linker can properly garbage collect any compiler-rt function that does not get resolved. The symbol visibility for all target remains the same as before: `default`.
37 lines
1.5 KiB
Zig
37 lines
1.5 KiB
Zig
///! The quoted behavior definitions are from
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///! https://gcc.gnu.org/onlinedocs/gcc-12.1.0/gccint/Soft-float-library-routines.html#Soft-float-library-routines
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const common = @import("./common.zig");
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const comparef = @import("./comparef.zig");
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pub const panic = common.panic;
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comptime {
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if (common.want_aeabi) {
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@export(__aeabi_fcmpge, .{ .name = "__aeabi_fcmpge", .linkage = common.linkage, .visibility = common.visibility });
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@export(__aeabi_fcmpgt, .{ .name = "__aeabi_fcmpgt", .linkage = common.linkage, .visibility = common.visibility });
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} else {
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@export(__gesf2, .{ .name = "__gesf2", .linkage = common.linkage, .visibility = common.visibility });
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@export(__gtsf2, .{ .name = "__gtsf2", .linkage = common.linkage, .visibility = common.visibility });
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}
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}
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/// "These functions return a value greater than or equal to zero if neither
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/// argument is NaN, and a is greater than or equal to b."
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pub fn __gesf2(a: f32, b: f32) callconv(.C) i32 {
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return @enumToInt(comparef.cmpf2(f32, comparef.GE, a, b));
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}
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/// "These functions return a value greater than zero if neither argument is NaN,
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/// and a is strictly greater than b."
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pub fn __gtsf2(a: f32, b: f32) callconv(.C) i32 {
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return __gesf2(a, b);
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}
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fn __aeabi_fcmpge(a: f32, b: f32) callconv(.AAPCS) i32 {
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return @boolToInt(comparef.cmpf2(f32, comparef.GE, a, b) != .Less);
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}
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fn __aeabi_fcmpgt(a: f32, b: f32) callconv(.AAPCS) i32 {
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return @boolToInt(comparef.cmpf2(f32, comparef.LE, a, b) == .Greater);
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}
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