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-rw-r--r--src/lib.rs293
1 files changed, 289 insertions, 4 deletions
diff --git a/src/lib.rs b/src/lib.rs
index 556ed8a..d693ee4 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -100,6 +100,11 @@ impl RegSpec {
}
#[inline]
+ pub fn rcx() -> RegSpec {
+ RegSpec { bank: RegisterBank::Q, num: 1 }
+ }
+
+ #[inline]
pub fn rdx() -> RegSpec {
RegSpec { bank: RegisterBank::Q, num: 2 }
}
@@ -287,6 +292,30 @@ pub enum Opcode {
SYSCALL,
LSL,
LAR,
+ SGDT,
+ SIDT,
+ LGDT,
+ LIDT,
+ SMSW,
+ LMSW,
+ SWAPGS,
+ RDTSCP,
+ INVLPG,
+ FXSAVE,
+ FXRSTOR,
+ LDMXCSR,
+ STMXCSR,
+ XSAVE,
+ XSTOR,
+ XSAVEOPT,
+ LFENCE,
+ MFENCE,
+ SFENCE,
+ CLFLUSH,
+ WRMSR,
+ RDTSC,
+ RDMSR,
+ RDPMC,
Invalid
}
#[derive(Debug)]
@@ -448,6 +477,7 @@ impl PrefixRex {
pub enum OperandCode {
ModRM_0x0f00,
ModRM_0x0f01,
+ ModRM_0x0fae,
Rq_Cq_0,
Rq_Dq_0,
Cq_Rq_0,
@@ -554,7 +584,7 @@ fn read_opcode_0f_map<T: Iterator<Item=u8>>(bytes_iter: &mut T, instruction: &mu
}
0x01 => {
instruction.prefixes = prefixes;
- Ok(OperandCode::ModRM_0x0f00)
+ Ok(OperandCode::ModRM_0x0f01)
}
0x02 => {
instruction.prefixes = prefixes;
@@ -621,6 +651,26 @@ fn read_opcode_0f_map<T: Iterator<Item=u8>>(bytes_iter: &mut T, instruction: &mu
instruction.opcode = Opcode::MOV;
Ok(OperandCode::Dq_Rq_0)
},
+ 0x30 => {
+ instruction.prefixes = prefixes;
+ instruction.opcode = Opcode::WRMSR;
+ Ok(OperandCode::Nothing)
+ },
+ 0x31 => {
+ instruction.prefixes = prefixes;
+ instruction.opcode = Opcode::RDTSC;
+ Ok(OperandCode::Nothing)
+ },
+ 0x32 => {
+ instruction.prefixes = prefixes;
+ instruction.opcode = Opcode::RDMSR;
+ Ok(OperandCode::Nothing)
+ },
+ 0x33 => {
+ instruction.prefixes = prefixes;
+ instruction.opcode = Opcode::RDPMC;
+ Ok(OperandCode::Nothing)
+ },
0x40 => {
instruction.prefixes = prefixes;
instruction.opcode = Opcode::CMOVO;
@@ -830,8 +880,7 @@ fn read_opcode_0f_map<T: Iterator<Item=u8>>(bytes_iter: &mut T, instruction: &mu
}
0xae => {
instruction.prefixes = prefixes;
- instruction.opcode = Opcode::PUSH;
- Ok(OperandCode::GS)
+ Ok(OperandCode::ModRM_0x0fae)
}
0xb0 => {
instruction.prefixes = prefixes;
@@ -2083,6 +2132,56 @@ fn read_operands<T: Iterator<Item=u8>>(
Err(reason) => Err(reason)
}
},
+ OperandCode::Ew_Sw => {
+ let opwidth = 2;
+ // TODO: ...
+ let modrm = match bytes_iter.next() {
+ Some(b) => b,
+ None => return Err("Out of bytes".to_string())
+ };
+ *length += 1;
+ let (mod_bits, r, m) = octets_of(modrm);
+
+ if r > 5 {
+ return Err("Invalid r".to_owned());
+ }
+
+ instruction.operands[1] =
+ Operand::Register(RegSpec { bank: RegisterBank::S, num: r });
+
+ if mod_bits == 0b11 {
+ instruction.operands[0] =
+ Operand::Register(RegSpec { bank: RegisterBank::W, num: m });
+ Ok(())
+ } else {
+ read_E(bytes_iter, &instruction.prefixes, m, mod_bits, opwidth, &mut instruction.operands[0], length)
+ }
+ },
+ OperandCode::Sw_Ew => {
+ let opwidth = 2;
+ // TODO: ...
+ let modrm = match bytes_iter.next() {
+ Some(b) => b,
+ None => return Err("Out of bytes".to_string())
+ };
+ *length += 1;
+ let (mod_bits, r, m) = octets_of(modrm);
+
+ if r > 5 {
+ return Err("Invalid r".to_owned());
+ }
+
+ instruction.operands[0] =
+ Operand::Register(RegSpec { bank: RegisterBank::S, num: r });
+
+ if mod_bits == 0b11 {
+ instruction.operands[1] =
+ Operand::Register(RegSpec { bank: RegisterBank::W, num: m });
+ Ok(())
+ } else {
+ read_E(bytes_iter, &instruction.prefixes, m, mod_bits, opwidth, &mut instruction.operands[1], length)
+ }
+ },
// TODO: verify M
OperandCode::Gv_Ev | OperandCode::Gv_M => {
let opwidth = imm_width_from_prefixes_64(SizeCode::vqp, &instruction.prefixes);
@@ -2118,13 +2217,27 @@ fn read_operands<T: Iterator<Item=u8>>(
Err(reason) => Err(reason)
}
},
+ OperandCode::AL_Ib => {
+ let opwidth = 1;
+ let numwidth = 1;
+ match read_imm_signed(bytes_iter, numwidth, opwidth, length) {
+ Ok(imm) => {
+ instruction.operands = [
+ Operand::Register(RegSpec::al()),
+ imm
+ ];
+ Ok(())
+ },
+ Err(reason) => Err(reason)
+ }
+ }
OperandCode::AX_Ivd => {
let opwidth = imm_width_from_prefixes_64(SizeCode::vqp, &instruction.prefixes);
let numwidth = if opwidth == 8 { 4 } else { opwidth };
match read_imm_signed(bytes_iter, numwidth, opwidth, length) {
Ok(imm) => {
instruction.operands = [
- Operand::Register(RegSpec::gp_from_parts(0, instruction.prefixes.rex().b(), opwidth, instruction.prefixes.rex().present())),
+ Operand::Register(RegSpec::gp_from_parts(0, false, opwidth, false)),
imm
];
Ok(())
@@ -2222,6 +2335,174 @@ fn read_operands<T: Iterator<Item=u8>>(
instruction.operands = [Operand::ImmediateI32(offset as i32), Operand::Nothing];
Ok(())
}
+ OperandCode::ModRM_0x0f00 => {
+ Ok(())
+ }
+ OperandCode::ModRM_0x0f01 => {
+ let opwidth = imm_width_from_prefixes_64(SizeCode::vq, &instruction.prefixes);
+ let modrm = match bytes_iter.next() {
+ Some(b) => b,
+ None => return Err("Out of bytes".to_string())
+ };
+ *length += 1;
+ let (mod_bits, r, m) = octets_of(modrm);
+ if r == 0 {
+ if mod_bits == 0b11 {
+ panic!("Unsupported instruction: 0x0f01 with modrm: 11 000 ___");
+ } else {
+ instruction.opcode = Opcode::SGDT;
+ instruction.operands[1] = Operand::Nothing;
+ read_E(bytes_iter, &instruction.prefixes, m, mod_bits, opwidth, &mut instruction.operands[0], length)
+ }
+ } else if r == 1 {
+ if mod_bits == 0b11 {
+ panic!("Unsupported instruction: 0x0f01 with modrm: 11 001 ___");
+ } else {
+ instruction.opcode = Opcode::SIDT;
+ instruction.operands[1] = Operand::Nothing;
+ read_E(bytes_iter, &instruction.prefixes, m, mod_bits, opwidth, &mut instruction.operands[0], length)
+ }
+ } else if r == 2 {
+ if mod_bits == 0b11 {
+ panic!("Unsupported instruction: 0x0f01 with modrm: 11 010 ___");
+ } else {
+ instruction.opcode = Opcode::LGDT;
+ instruction.operands[1] = Operand::Nothing;
+ read_E(bytes_iter, &instruction.prefixes, m, mod_bits, opwidth, &mut instruction.operands[0], length)
+ }
+ } else if r == 3 {
+ if mod_bits == 0b11 {
+ panic!("Unsupported instruction: 0x0f01 with modrm: 11 011 ___");
+ } else {
+ instruction.opcode = Opcode::LIDT;
+ instruction.operands[1] = Operand::Nothing;
+ read_E(bytes_iter, &instruction.prefixes, m, mod_bits, opwidth, &mut instruction.operands[0], length)
+ }
+ } else if r == 4 {
+ // TODO: this permits storing only to word-size registers
+ // spec suggets this might do something different for f.ex rdi?
+ instruction.opcode = Opcode::SMSW;
+ instruction.operands[1] = Operand::Nothing;
+ read_E(bytes_iter, &instruction.prefixes, m, mod_bits, 2, &mut instruction.operands[0], length)
+ } else if r == 5 {
+ panic!("Unsupported instruction: 0x0f01 with modrm: __ 101 ___");
+ } else if r == 6 {
+ instruction.opcode = Opcode::LMSW;
+ instruction.operands[1] = Operand::Nothing;
+ read_E(bytes_iter, &instruction.prefixes, m, mod_bits, 2, &mut instruction.operands[0], length)
+ } else if r == 7 {
+ if mod_bits == 0b11 {
+ if m == 1 {
+ instruction.opcode == Opcode::SWAPGS;
+ instruction.operands = [Operand::Nothing, Operand::Nothing];
+ Ok(())
+ } else if m == 2 {
+ instruction.opcode == Opcode::RDTSCP;
+ instruction.operands = [Operand::Nothing, Operand::Nothing];
+ Ok(())
+ } else {
+ panic!("Unsupported instruction: 0x0f01 with modrm: 11 110 r >= 2");
+ }
+ } else {
+ instruction.opcode = Opcode::INVLPG;
+ instruction.operands[1] = Operand::Nothing;
+ read_E(bytes_iter, &instruction.prefixes, m, mod_bits, opwidth, &mut instruction.operands[0], length)
+ }
+ } else {
+ unreachable!("r <= 8");
+ }
+ }
+ OperandCode::ModRM_0x0fae => {
+ let modrm = match bytes_iter.next() {
+ Some(b) => b,
+ None => return Err("Out of bytes".to_string())
+ };
+ *length += 1;
+ let (mod_bits, r, m) = octets_of(modrm);
+ match r {
+ 0 => {
+ if mod_bits == 0b11 {
+ Err("Invalid mod bits".to_owned())
+ } else {
+ instruction.opcode = Opcode::FXSAVE;
+ instruction.operands[1] = Operand::Nothing;
+ read_E(bytes_iter, &instruction.prefixes, m, mod_bits, 8, &mut instruction.operands[0], length)
+ }
+ }
+ 1 => {
+ if mod_bits == 0b11 {
+ Err("Invalid mod bits".to_owned())
+ } else {
+ instruction.opcode = Opcode::FXRSTOR;
+ instruction.operands[1] = Operand::Nothing;
+ read_E(bytes_iter, &instruction.prefixes, m, mod_bits, 8, &mut instruction.operands[0], length)
+ }
+ }
+ 2 => {
+ if mod_bits == 0b11 {
+ Err("Invalid mod bits".to_owned())
+ } else {
+ instruction.opcode = Opcode::LDMXCSR;
+ instruction.operands[1] = Operand::Nothing;
+ read_E(bytes_iter, &instruction.prefixes, m, mod_bits, 8, &mut instruction.operands[0], length)
+ }
+ }
+ 3 => {
+ if mod_bits == 0b11 {
+ Err("Invalid mod bits".to_owned())
+ } else {
+ instruction.opcode = Opcode::STMXCSR;
+ instruction.operands[1] = Operand::Nothing;
+ read_E(bytes_iter, &instruction.prefixes, m, mod_bits, 8, &mut instruction.operands[0], length)
+ }
+ }
+ 4 => {
+ if mod_bits == 0b11 {
+ Err("Invalid mod bits".to_owned())
+ } else {
+ instruction.opcode = Opcode::XSAVE;
+ instruction.operands[1] = Operand::Nothing;
+ read_E(bytes_iter, &instruction.prefixes, m, mod_bits, 8, &mut instruction.operands[0], length)
+ }
+ }
+ 5 => {
+ if mod_bits == 0b11 {
+ instruction.opcode = Opcode::LFENCE;
+ instruction.operands = [Operand::Nothing, Operand::Nothing];
+ Ok(())
+ } else {
+ instruction.opcode = Opcode::XSTOR;
+ instruction.operands[1] = Operand::Nothing;
+ read_E(bytes_iter, &instruction.prefixes, m, mod_bits, 8, &mut instruction.operands[0], length)
+ }
+ }
+ 6 => {
+ if mod_bits == 0b11 {
+ instruction.opcode = Opcode::MFENCE;
+ instruction.operands = [Operand::Nothing, Operand::Nothing];
+ Ok(())
+ } else {
+ // TODO: radare reports this, but i'm not sure?
+ instruction.opcode = Opcode::XSAVEOPT;
+ instruction.operands[1] = Operand::Nothing;
+ read_E(bytes_iter, &instruction.prefixes, m, mod_bits, 8, &mut instruction.operands[0], length)
+ }
+ }
+ 7 => {
+ if mod_bits == 0b11 {
+ instruction.opcode = Opcode::SFENCE;
+ instruction.operands = [Operand::Nothing, Operand::Nothing];
+ Ok(())
+ } else {
+ // TODO: radare reports this, but i'm not sure?
+ instruction.opcode = Opcode::CLFLUSH;
+ instruction.operands[1] = Operand::Nothing;
+ read_E(bytes_iter, &instruction.prefixes, m, mod_bits, 8, &mut instruction.operands[0], length)
+ }
+ }
+ _ => { unreachable!("r < 6"); }
+ }
+ }
OperandCode::Rq_Cq_0 => {
let opwidth = 8;
let modrm = match bytes_iter.next() {
@@ -2309,6 +2590,10 @@ fn read_operands<T: Iterator<Item=u8>>(
instruction.operands = [Operand::Register(RegSpec::fs()), Operand::Nothing];
Ok(())
}
+ OperandCode::I_3 => {
+ instruction.operands = [Operand::ImmediateU8(3), Operand::Nothing];
+ Ok(())
+ }
OperandCode::Nothing => {
instruction.operands = [Operand::Nothing, Operand::Nothing];
Ok(())
generated by cgit v1.1 at 2024-06-26 18:25:46 +0000