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std.debug.cpu_context: map a bunch of known registers as unsupported instead of invalid
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Alex Rønne Petersen
parent
de3b22db4d
commit
7fdd5704ed
@ -341,7 +341,7 @@ pub const X86 = struct {
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// x86-macos is a deprecated target which is not supported by the Zig Standard Library.
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0...8 => return @ptrCast(&ctx.gprs.values[register_num]),
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9 => return error.UnsupportedRegister, // rflags
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9 => return error.UnsupportedRegister, // eflags
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11...18 => return error.UnsupportedRegister, // st0 - st7
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21...28 => return error.UnsupportedRegister, // xmm0 - xmm7
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29...36 => return error.UnsupportedRegister, // mm0 - mm7
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@ -349,7 +349,7 @@ pub const X86 = struct {
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40...45 => return error.UnsupportedRegister, // es, cs, ss, ds, fs, gs
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48 => return error.UnsupportedRegister, // tr
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49 => return error.UnsupportedRegister, // ldtr
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93...94 => return error.UnsupportedRegister, // fs.base, gs.base
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93...100 => return error.UnsupportedRegister, // k0 - k7 (AVX-512)
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else => return error.InvalidRegister,
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}
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@ -417,6 +417,9 @@ pub const X86_64 = struct {
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64 => return error.UnsupportedRegister, // mxcsr
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65 => return error.UnsupportedRegister, // fcw
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66 => return error.UnsupportedRegister, // fsw
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67...82 => return error.UnsupportedRegister, // xmm16 - xmm31 (AVX-512)
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118...125 => return error.UnsupportedRegister, // k0 - k7 (AVX-512)
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130...145 => return error.UnsupportedRegister, // r16 - r31 (APX)
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else => return error.InvalidRegister,
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}
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@ -520,13 +523,13 @@ pub const Aarch64 = extern struct {
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31 => return @ptrCast(&ctx.sp),
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32 => return @ptrCast(&ctx.pc),
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33 => return error.UnsupportedRegister, // ELF_mode
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33 => return error.UnsupportedRegister, // ELR_mode
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34 => return error.UnsupportedRegister, // RA_SIGN_STATE
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35 => return error.UnsupportedRegister, // TPIDRRO_ELO
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36 => return error.UnsupportedRegister, // RPIDR_ELO
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37 => return error.UnsupportedRegister, // RPIDR_EL1
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38 => return error.UnsupportedRegister, // RPIDR_EL2
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39 => return error.UnsupportedRegister, // RPIDR_EL3
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36 => return error.UnsupportedRegister, // TPIDR_ELO
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37 => return error.UnsupportedRegister, // TPIDR_EL1
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38 => return error.UnsupportedRegister, // TPIDR_EL2
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39 => return error.UnsupportedRegister, // TPIDR_EL3
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46 => return error.UnsupportedRegister, // VG
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47 => return error.UnsupportedRegister, // FFR
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48...63 => return error.UnsupportedRegister, // P0 - P15
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@ -701,6 +704,8 @@ pub const LoongArch = extern struct {
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0...31 => return @ptrCast(&ctx.r[register_num]),
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64 => return @ptrCast(&ctx.pc),
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32...63 => return error.UnsupportedRegister, // f0 - f31
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else => return error.InvalidRegister,
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}
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}
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@ -811,6 +816,18 @@ pub const Mips = extern struct {
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0...31 => return @ptrCast(&ctx.r[register_num]),
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66 => return @ptrCast(&ctx.pc),
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// Who the hell knows what numbers exist for this architecture? What's an ABI
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// specification anyway? We don't need that nonsense.
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32...63 => return error.UnsupportedRegister, // f0 - f31, w0 - w31
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64 => return error.UnsupportedRegister, // hi0 (ac0)
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65 => return error.UnsupportedRegister, // lo0 (ac0)
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176 => return error.UnsupportedRegister, // hi1 (ac1)
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177 => return error.UnsupportedRegister, // lo1 (ac1)
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178 => return error.UnsupportedRegister, // hi2 (ac2)
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179 => return error.UnsupportedRegister, // lo2 (ac2)
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180 => return error.UnsupportedRegister, // hi3 (ac3)
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181 => return error.UnsupportedRegister, // lo3 (ac3)
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else => return error.InvalidRegister,
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}
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}
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@ -914,11 +931,59 @@ pub const Powerpc = extern struct {
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}
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pub fn dwarfRegisterBytes(ctx: *Powerpc, register_num: u16) DwarfRegisterError![]u8 {
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// References:
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//
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// * System V Application Binary Interface - PowerPC Processor Supplement §3-46
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// * Power Architecture 32-bit Application Binary Interface Supplement 1.0 - Linux & Embedded §3.4
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// * 64-bit ELF V2 ABI Specification - Power Architecture Revision 1.5 §2.4
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// * ??? AIX?
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//
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// Are we having fun yet?
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if (Gpr == u64) switch (register_num) {
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65 => return @ptrCast(&ctx.lr), // lr
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66 => return error.UnsupportedRegister, // ctr
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68...75 => return error.UnsupportedRegister, // cr0 - cr7
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76 => return error.UnsupportedRegister, // xer
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77...108 => return error.UnsupportedRegister, // vr0 - vr31
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109 => return error.UnsupportedRegister, // vrsave (LLVM)
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110 => return error.UnsupportedRegister, // vscr
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114 => return error.UnsupportedRegister, // tfhar
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115 => return error.UnsupportedRegister, // tfiar
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116 => return error.UnsupportedRegister, // texasr
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else => {},
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} else switch (register_num) {
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65 => return @ptrCast(&ctx.lr), // fpscr (SVR4 / EABI), or lr if you ask LLVM
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108 => return @ptrCast(&ctx.lr),
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64 => return error.UnsupportedRegister, // cr
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66 => return error.UnsupportedRegister, // msr (SVR4 / EABI), or ctr if you ask LLVM
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68...75 => return error.UnsupportedRegister, // cr0 - cr7 if you ask LLVM
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76 => return error.UnsupportedRegister, // xer if you ask LLVM
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99 => return error.UnsupportedRegister, // acc
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100 => return error.UnsupportedRegister, // mq
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101 => return error.UnsupportedRegister, // xer
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102...107 => return error.UnsupportedRegister, // SPRs
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109 => return error.UnsupportedRegister, // ctr
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110...111 => return error.UnsupportedRegister, // SPRs
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112 => return error.UnsupportedRegister, // spefscr
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113...1123 => return error.UnsupportedRegister, // SPRs
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1124...1155 => return error.UnsupportedRegister, // SPE v0 - v31
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1200...1231 => return error.UnsupportedRegister, // SPE upper r0 - r31
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3072...4095 => return error.UnsupportedRegister, // DCRs
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4096...5120 => return error.UnsupportedRegister, // PMRs
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else => {},
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}
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switch (register_num) {
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0...31 => return @ptrCast(&ctx.r[register_num]),
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65 => return @ptrCast(&ctx.lr),
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67 => return @ptrCast(&ctx.pc),
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32...63 => return error.UnsupportedRegister, // f0 - f31
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else => return error.InvalidRegister,
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}
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}
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@ -1019,6 +1084,12 @@ pub const Riscv = extern struct {
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0...31 => return @ptrCast(&ctx.r[register_num]),
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65 => return @ptrCast(&ctx.pc),
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32...63 => return error.UnsupportedRegister, // f0 - f31
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64 => return error.UnsupportedRegister, // Alternate Frame Return Column
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96...127 => return error.UnsupportedRegister, // v0 - v31
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3072...4095 => return error.UnsupportedRegister, // Custom extensions
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4096...8191 => return error.UnsupportedRegister, // CSRs
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else => return error.InvalidRegister,
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}
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}
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@ -1057,7 +1128,9 @@ pub const S390x = extern struct {
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65 => return @ptrCast(&ctx.psw.addr),
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16...31 => return error.UnsupportedRegister, // f0 - f15
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32...47 => return error.UnsupportedRegister, // cr0 - cr15
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48...63 => return error.UnsupportedRegister, // a0 - a15
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66...67 => return error.UnsupportedRegister, // z/OS stuff???
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68...83 => return error.UnsupportedRegister, // v16 - v31
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else => return error.InvalidRegister,
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