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link.Elf: Set EI_OSABI value correctly depending on target arch/OS.

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Alex Rønne Petersen 2024-10-01 04:34:32 +02:00
parent b569ead29e
commit 125c043abc
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1 changed files with 20 additions and 3 deletions
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23
src/link/Elf.zig
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@ -2589,11 +2589,28 @@ pub fn writeElfHeader(self: *Elf) !void {
hdr_buf[index] = 1; // ELF version
index += 1;
// OS ABI, often set to 0 regardless of target platform
hdr_buf[index] = @intFromEnum(@as(elf.OSABI, switch (target.cpu.arch) {
.amdgcn => switch (target.os.tag) {
.amdhsa => .AMDGPU_HSA,
.amdpal => .AMDGPU_PAL,
.mesa3d => .AMDGPU_MESA3D,
else => .NONE,
},
.msp430 => .STANDALONE,
else => switch (target.os.tag) {
.freebsd, .ps4 => .FREEBSD,
.hermit => .STANDALONE,
.illumos, .solaris => .SOLARIS,
.openbsd => .OPENBSD,
else => .NONE,
},
}));
index += 1;
// ABI Version, possibly used by glibc but not by static executables
// padding
@memset(hdr_buf[index..][0..9], 0);
index += 9;
@memset(hdr_buf[index..][0..8], 0);
index += 8;
assert(index == 16);