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reintroduce std.Dwarf.abi.supportsUnwinding

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There are two concepts here: one for whether dwarf supports unwinding on
that target, and another for whether the Zig standard library
implements it yet.
This commit is contained in:
Andrew Kelley
2024-08-02 12:35:49 -07:00
parent 975c185b92
commit 6d606cc38b
3 changed files with 61 additions and 25 deletions
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24
lib/std/debug/Dwarf.zig
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@@ -2023,27 +2023,3 @@ fn pcRelBase(field_ptr: usize, pc_rel_offset: i64) !usize {
return std.math.add(usize, field_ptr, @as(usize, @intCast(pc_rel_offset)));
}
}
pub fn supportsUnwinding(target: std.Target) bool {
return switch (target.cpu.arch) {
.x86 => switch (target.os.tag) {
.linux, .netbsd, .solaris, .illumos => true,
else => false,
},
.x86_64 => switch (target.os.tag) {
.linux, .netbsd, .freebsd, .openbsd, .macos, .ios, .solaris, .illumos => true,
else => false,
},
.arm => switch (target.os.tag) {
.linux => true,
else => false,
},
.aarch64 => switch (target.os.tag) {
.linux, .netbsd, .freebsd, .macos, .ios => true,
else => false,
},
// Unwinding is possible on other targets but this implementation does
// not support them...yet!
else => false,
};
}