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openbsd: add proper support for aarch64

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define openbsd specific elements in std/dwarf/abi.zig regBytes()

work from Jasper Lievisse Adriaanse, with register values from sys/signal.h
and https://github.com/ARM-software/abi-aa/blob/main/aadwarf64/aadwarf64.rst#dwarf-register-names
This commit is contained in:
Sebastien Marie
2024-01-17 10:16:44 +00:00
committed by Andrew Kelley
parent a7dbc57a35
commit 7d81c952d5
1 changed files with 8 additions and 0 deletions
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8
lib/std/dwarf/abi.zig
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@@ -369,6 +369,14 @@ pub fn regBytes(
else => error.InvalidRegister,
},
.openbsd => switch (reg_number) {
0...30 => mem.asBytes(&ucontext_ptr.sc_x[reg_number]),
31 => mem.asBytes(&ucontext_ptr.sc_sp),
32 => mem.asBytes(&ucontext_ptr.sc_lr),
33 => mem.asBytes(&ucontext_ptr.sc_elr),
34 => mem.asBytes(&ucontext_ptr.sc_spsr),
else => error.InvalidRegister,
},
else => switch (reg_number) {
0...30 => mem.asBytes(&ucontext_ptr.mcontext.regs[reg_number]),
31 => mem.asBytes(&ucontext_ptr.mcontext.sp),