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std.debug.Dwarf: use 66 as the (fake) MIPS PC register

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32-63 conflict with the floating point registers. 64 and 65 are used for the
ac0 hi/lo registers.
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Alex Rønne Petersen 2025-10-07 08:46:43 +02:00
parent f6403ed5ea
commit 9cd37a0696
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2 changed files with 2 additions and 2 deletions
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2
lib/std/debug/Dwarf.zig
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@ -1433,7 +1433,7 @@ pub fn ipRegNum(arch: std.Target.Cpu.Arch) ?u16 {
.arm, .armeb, .thumb, .thumbeb => 15,
.hexagon => 76,
.loongarch32, .loongarch64 => 64,
.mips, .mipsel, .mips64, .mips64el => 37,
.mips, .mipsel, .mips64, .mips64el => 66,
.powerpc, .powerpcle, .powerpc64, .powerpc64le => 67,
.riscv32, .riscv32be, .riscv64, .riscv64be => 65,
.s390x => 65,

2
lib/std/debug/cpu_context.zig
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@ -810,7 +810,7 @@ pub const Mips = extern struct {
pub fn dwarfRegisterBytes(ctx: *Mips, register_num: u16) DwarfRegisterError![]u8 {
switch (register_num) {
0...31 => return @ptrCast(&ctx.r[register_num]),
37 => return @ptrCast(&ctx.pc),
66 => return @ptrCast(&ctx.pc),
else => return error.InvalidRegister,
}