summaryrefslogtreecommitdiff
path: root/source/Plugins/Process/Utility/ARMUtils.h
diff options
context:
space:
mode:
Diffstat (limited to 'source/Plugins/Process/Utility/ARMUtils.h')
-rw-r--r--source/Plugins/Process/Utility/ARMUtils.h567
1 files changed, 274 insertions, 293 deletions
diff --git a/source/Plugins/Process/Utility/ARMUtils.h b/source/Plugins/Process/Utility/ARMUtils.h
index b6ba3fea6928..2bbd519b246a 100644
--- a/source/Plugins/Process/Utility/ARMUtils.h
+++ b/source/Plugins/Process/Utility/ARMUtils.h
@@ -18,352 +18,335 @@
namespace lldb_private {
-static inline uint32_t Align(uint32_t val, uint32_t alignment)
-{
- return alignment * (val / alignment);
+static inline uint32_t Align(uint32_t val, uint32_t alignment) {
+ return alignment * (val / alignment);
}
-static inline uint32_t DecodeImmShift(const uint32_t type, const uint32_t imm5, ARM_ShifterType &shift_t)
-{
- switch (type)
- {
- default:
- //assert(0 && "Invalid shift type");
- case 0:
- shift_t = SRType_LSL;
- return imm5;
- case 1:
- shift_t = SRType_LSR;
- return (imm5 == 0 ? 32 : imm5);
- case 2:
- shift_t = SRType_ASR;
- return (imm5 == 0 ? 32 : imm5);
- case 3:
- if (imm5 == 0)
- {
- shift_t = SRType_RRX;
- return 1;
- }
- else
- {
- shift_t = SRType_ROR;
- return imm5;
- }
+static inline uint32_t DecodeImmShift(const uint32_t type, const uint32_t imm5,
+ ARM_ShifterType &shift_t) {
+ switch (type) {
+ default:
+ // assert(0 && "Invalid shift type");
+ case 0:
+ shift_t = SRType_LSL;
+ return imm5;
+ case 1:
+ shift_t = SRType_LSR;
+ return (imm5 == 0 ? 32 : imm5);
+ case 2:
+ shift_t = SRType_ASR;
+ return (imm5 == 0 ? 32 : imm5);
+ case 3:
+ if (imm5 == 0) {
+ shift_t = SRType_RRX;
+ return 1;
+ } else {
+ shift_t = SRType_ROR;
+ return imm5;
}
- shift_t = SRType_Invalid;
- return UINT32_MAX;
-
+ }
+ shift_t = SRType_Invalid;
+ return UINT32_MAX;
}
// A8.6.35 CMP (register) -- Encoding T3
// Convenience function.
-static inline uint32_t DecodeImmShiftThumb(const uint32_t opcode, ARM_ShifterType &shift_t)
-{
- return DecodeImmShift(Bits32(opcode, 5, 4), Bits32(opcode, 14, 12)<<2 | Bits32(opcode, 7, 6), shift_t);
+static inline uint32_t DecodeImmShiftThumb(const uint32_t opcode,
+ ARM_ShifterType &shift_t) {
+ return DecodeImmShift(Bits32(opcode, 5, 4),
+ Bits32(opcode, 14, 12) << 2 | Bits32(opcode, 7, 6),
+ shift_t);
}
// A8.6.35 CMP (register) -- Encoding A1
// Convenience function.
-static inline uint32_t DecodeImmShiftARM(const uint32_t opcode, ARM_ShifterType &shift_t)
-{
- return DecodeImmShift(Bits32(opcode, 6, 5), Bits32(opcode, 11, 7), shift_t);
+static inline uint32_t DecodeImmShiftARM(const uint32_t opcode,
+ ARM_ShifterType &shift_t) {
+ return DecodeImmShift(Bits32(opcode, 6, 5), Bits32(opcode, 11, 7), shift_t);
}
-static inline uint32_t DecodeImmShift(const ARM_ShifterType shift_t, const uint32_t imm5)
-{
- ARM_ShifterType dont_care;
- return DecodeImmShift(shift_t, imm5, dont_care);
+static inline uint32_t DecodeImmShift(const ARM_ShifterType shift_t,
+ const uint32_t imm5) {
+ ARM_ShifterType dont_care;
+ return DecodeImmShift(shift_t, imm5, dont_care);
}
-static inline ARM_ShifterType DecodeRegShift(const uint32_t type)
-{
- switch (type) {
- default:
- //assert(0 && "Invalid shift type");
- return SRType_Invalid;
- case 0:
- return SRType_LSL;
- case 1:
- return SRType_LSR;
- case 2:
- return SRType_ASR;
- case 3:
- return SRType_ROR;
- }
+static inline ARM_ShifterType DecodeRegShift(const uint32_t type) {
+ switch (type) {
+ default:
+ // assert(0 && "Invalid shift type");
+ return SRType_Invalid;
+ case 0:
+ return SRType_LSL;
+ case 1:
+ return SRType_LSR;
+ case 2:
+ return SRType_ASR;
+ case 3:
+ return SRType_ROR;
+ }
}
-static inline uint32_t LSL_C(const uint32_t value, const uint32_t amount, uint32_t &carry_out, bool *success)
-{
- if (amount == 0) {
- *success = false;
- return 0;
- }
- *success = true;
- carry_out = amount <= 32 ? Bit32(value, 32 - amount) : 0;
- return value << amount;
+static inline uint32_t LSL_C(const uint32_t value, const uint32_t amount,
+ uint32_t &carry_out, bool *success) {
+ if (amount == 0) {
+ *success = false;
+ return 0;
+ }
+ *success = true;
+ carry_out = amount <= 32 ? Bit32(value, 32 - amount) : 0;
+ return value << amount;
}
-static inline uint32_t LSL(const uint32_t value, const uint32_t amount, bool *success)
-{
- *success = true;
- if (amount == 0)
- return value;
- uint32_t dont_care;
- uint32_t result = LSL_C(value, amount, dont_care, success);
- if (*success)
- return result;
- else
- return 0;
-}
-
-static inline uint32_t LSR_C(const uint32_t value, const uint32_t amount, uint32_t &carry_out, bool *success)
-{
- if (amount == 0) {
- *success = false;
- return 0;
- }
- *success = true;
- carry_out = amount <= 32 ? Bit32(value, amount - 1) : 0;
- return value >> amount;
+static inline uint32_t LSL(const uint32_t value, const uint32_t amount,
+ bool *success) {
+ *success = true;
+ if (amount == 0)
+ return value;
+ uint32_t dont_care;
+ uint32_t result = LSL_C(value, amount, dont_care, success);
+ if (*success)
+ return result;
+ else
+ return 0;
}
-static inline uint32_t LSR(const uint32_t value, const uint32_t amount, bool *success)
-{
- *success = true;
- if (amount == 0)
- return value;
- uint32_t dont_care;
- uint32_t result = LSR_C(value, amount, dont_care, success);
- if (*success)
- return result;
- else
- return 0;
+static inline uint32_t LSR_C(const uint32_t value, const uint32_t amount,
+ uint32_t &carry_out, bool *success) {
+ if (amount == 0) {
+ *success = false;
+ return 0;
+ }
+ *success = true;
+ carry_out = amount <= 32 ? Bit32(value, amount - 1) : 0;
+ return value >> amount;
}
-static inline uint32_t ASR_C(const uint32_t value, const uint32_t amount, uint32_t &carry_out, bool *success)
-{
- if (amount == 0 || amount > 32) {
- *success = false;
- return 0;
- }
- *success = true;
- bool negative = BitIsSet(value, 31);
- if (amount <= 32)
- {
- carry_out = Bit32(value, amount - 1);
- int64_t extended = llvm::SignExtend64<32>(value);
- return UnsignedBits(extended, amount + 31, amount);
- }
- else
- {
- carry_out = (negative ? 1 : 0);
- return (negative ? 0xffffffff : 0);
- }
+static inline uint32_t LSR(const uint32_t value, const uint32_t amount,
+ bool *success) {
+ *success = true;
+ if (amount == 0)
+ return value;
+ uint32_t dont_care;
+ uint32_t result = LSR_C(value, amount, dont_care, success);
+ if (*success)
+ return result;
+ else
+ return 0;
}
-static inline uint32_t ASR(const uint32_t value, const uint32_t amount, bool *success)
-{
- *success = true;
- if (amount == 0)
- return value;
- uint32_t dont_care;
- uint32_t result = ASR_C(value, amount, dont_care, success);
- if (*success)
- return result;
- else
- return 0;
+static inline uint32_t ASR_C(const uint32_t value, const uint32_t amount,
+ uint32_t &carry_out, bool *success) {
+ if (amount == 0 || amount > 32) {
+ *success = false;
+ return 0;
+ }
+ *success = true;
+ bool negative = BitIsSet(value, 31);
+ if (amount <= 32) {
+ carry_out = Bit32(value, amount - 1);
+ int64_t extended = llvm::SignExtend64<32>(value);
+ return UnsignedBits(extended, amount + 31, amount);
+ } else {
+ carry_out = (negative ? 1 : 0);
+ return (negative ? 0xffffffff : 0);
+ }
}
-static inline uint32_t ROR_C(const uint32_t value, const uint32_t amount, uint32_t &carry_out, bool *success)
-{
- if (amount == 0) {
- *success = false;
- return 0;
- }
- *success = true;
- uint32_t amt = amount % 32;
- uint32_t result = Rotr32(value, amt);
- carry_out = Bit32(value, 31);
+static inline uint32_t ASR(const uint32_t value, const uint32_t amount,
+ bool *success) {
+ *success = true;
+ if (amount == 0)
+ return value;
+ uint32_t dont_care;
+ uint32_t result = ASR_C(value, amount, dont_care, success);
+ if (*success)
return result;
+ else
+ return 0;
}
-static inline uint32_t ROR(const uint32_t value, const uint32_t amount, bool *success)
-{
- *success = true;
- if (amount == 0)
- return value;
- uint32_t dont_care;
- uint32_t result = ROR_C(value, amount, dont_care, success);
- if (*success)
- return result;
- else
- return 0;
+static inline uint32_t ROR_C(const uint32_t value, const uint32_t amount,
+ uint32_t &carry_out, bool *success) {
+ if (amount == 0) {
+ *success = false;
+ return 0;
+ }
+ *success = true;
+ uint32_t amt = amount % 32;
+ uint32_t result = Rotr32(value, amt);
+ carry_out = Bit32(value, 31);
+ return result;
}
-static inline uint32_t RRX_C(const uint32_t value, const uint32_t carry_in, uint32_t &carry_out, bool *success)
-{
- *success = true;
- carry_out = Bit32(value, 0);
- return Bit32(carry_in, 0) << 31 | Bits32(value, 31, 1);
+static inline uint32_t ROR(const uint32_t value, const uint32_t amount,
+ bool *success) {
+ *success = true;
+ if (amount == 0)
+ return value;
+ uint32_t dont_care;
+ uint32_t result = ROR_C(value, amount, dont_care, success);
+ if (*success)
+ return result;
+ else
+ return 0;
}
-static inline uint32_t RRX(const uint32_t value, const uint32_t carry_in, bool *success)
-{
- *success = true;
- uint32_t dont_care;
- uint32_t result = RRX_C(value, carry_in, dont_care, success);
- if (*success)
- return result;
- else
- return 0;
+static inline uint32_t RRX_C(const uint32_t value, const uint32_t carry_in,
+ uint32_t &carry_out, bool *success) {
+ *success = true;
+ carry_out = Bit32(value, 0);
+ return Bit32(carry_in, 0) << 31 | Bits32(value, 31, 1);
}
-static inline uint32_t Shift_C(const uint32_t value, ARM_ShifterType type, const uint32_t amount,
- const uint32_t carry_in, uint32_t &carry_out, bool *success)
-{
- if (type == SRType_RRX && amount != 1) {
- *success = false;
- return 0;
- }
- *success = true;
+static inline uint32_t RRX(const uint32_t value, const uint32_t carry_in,
+ bool *success) {
+ *success = true;
+ uint32_t dont_care;
+ uint32_t result = RRX_C(value, carry_in, dont_care, success);
+ if (*success)
+ return result;
+ else
+ return 0;
+}
- if (amount == 0) {
- carry_out = carry_in;
- return value;
- }
- uint32_t result;
- switch (type) {
- case SRType_LSL:
- result = LSL_C(value, amount, carry_out, success);
- break;
- case SRType_LSR:
- result = LSR_C(value, amount, carry_out, success);
- break;
- case SRType_ASR:
- result = ASR_C(value, amount, carry_out, success);
- break;
- case SRType_ROR:
- result = ROR_C(value, amount, carry_out, success);
- break;
- case SRType_RRX:
- result = RRX_C(value, carry_in, carry_out, success);
- break;
- default:
- *success = false;
- break;
- }
- if (*success)
- return result;
- else
- return 0;
+static inline uint32_t Shift_C(const uint32_t value, ARM_ShifterType type,
+ const uint32_t amount, const uint32_t carry_in,
+ uint32_t &carry_out, bool *success) {
+ if (type == SRType_RRX && amount != 1) {
+ *success = false;
+ return 0;
+ }
+ *success = true;
+
+ if (amount == 0) {
+ carry_out = carry_in;
+ return value;
+ }
+ uint32_t result;
+ switch (type) {
+ case SRType_LSL:
+ result = LSL_C(value, amount, carry_out, success);
+ break;
+ case SRType_LSR:
+ result = LSR_C(value, amount, carry_out, success);
+ break;
+ case SRType_ASR:
+ result = ASR_C(value, amount, carry_out, success);
+ break;
+ case SRType_ROR:
+ result = ROR_C(value, amount, carry_out, success);
+ break;
+ case SRType_RRX:
+ result = RRX_C(value, carry_in, carry_out, success);
+ break;
+ default:
+ *success = false;
+ break;
+ }
+ if (*success)
+ return result;
+ else
+ return 0;
}
-static inline uint32_t Shift(const uint32_t value, ARM_ShifterType type, const uint32_t amount,
- const uint32_t carry_in, bool *success)
-{
- // Don't care about carry out in this case.
- uint32_t dont_care;
- uint32_t result = Shift_C(value, type, amount, carry_in, dont_care, success);
- if (*success)
- return result;
- else
- return 0;
+static inline uint32_t Shift(const uint32_t value, ARM_ShifterType type,
+ const uint32_t amount, const uint32_t carry_in,
+ bool *success) {
+ // Don't care about carry out in this case.
+ uint32_t dont_care;
+ uint32_t result = Shift_C(value, type, amount, carry_in, dont_care, success);
+ if (*success)
+ return result;
+ else
+ return 0;
}
-static inline uint32_t bits(const uint32_t val, const uint32_t msbit, const uint32_t lsbit)
-{
- return Bits32(val, msbit, lsbit);
+static inline uint32_t bits(const uint32_t val, const uint32_t msbit,
+ const uint32_t lsbit) {
+ return Bits32(val, msbit, lsbit);
}
-static inline uint32_t bit(const uint32_t val, const uint32_t msbit)
-{
- return bits(val, msbit, msbit);
+static inline uint32_t bit(const uint32_t val, const uint32_t msbit) {
+ return bits(val, msbit, msbit);
}
-static uint32_t ror(uint32_t val, uint32_t N, uint32_t shift)
-{
- uint32_t m = shift % N;
- return (val >> m) | (val << (N - m));
+static uint32_t ror(uint32_t val, uint32_t N, uint32_t shift) {
+ uint32_t m = shift % N;
+ return (val >> m) | (val << (N - m));
}
// (imm32, carry_out) = ARMExpandImm_C(imm12, carry_in)
-static inline uint32_t ARMExpandImm_C(uint32_t opcode, uint32_t carry_in, uint32_t &carry_out)
-{
- uint32_t imm32; // the expanded result
- uint32_t imm = bits(opcode, 7, 0); // immediate value
- uint32_t amt = 2 * bits(opcode, 11, 8); // rotate amount
- if (amt == 0)
- {
- imm32 = imm;
- carry_out = carry_in;
- }
- else
- {
- imm32 = ror(imm, 32, amt);
- carry_out = Bit32(imm32, 31);
- }
- return imm32;
+static inline uint32_t ARMExpandImm_C(uint32_t opcode, uint32_t carry_in,
+ uint32_t &carry_out) {
+ uint32_t imm32; // the expanded result
+ uint32_t imm = bits(opcode, 7, 0); // immediate value
+ uint32_t amt = 2 * bits(opcode, 11, 8); // rotate amount
+ if (amt == 0) {
+ imm32 = imm;
+ carry_out = carry_in;
+ } else {
+ imm32 = ror(imm, 32, amt);
+ carry_out = Bit32(imm32, 31);
+ }
+ return imm32;
}
-static inline uint32_t ARMExpandImm(uint32_t opcode)
-{
- // 'carry_in' argument to following function call does not affect the imm32 result.
- uint32_t carry_in = 0;
- uint32_t carry_out;
- return ARMExpandImm_C(opcode, carry_in, carry_out);
+static inline uint32_t ARMExpandImm(uint32_t opcode) {
+ // 'carry_in' argument to following function call does not affect the imm32
+ // result.
+ uint32_t carry_in = 0;
+ uint32_t carry_out;
+ return ARMExpandImm_C(opcode, carry_in, carry_out);
}
// (imm32, carry_out) = ThumbExpandImm_C(imm12, carry_in)
-static inline uint32_t ThumbExpandImm_C(uint32_t opcode, uint32_t carry_in, uint32_t &carry_out)
-{
- uint32_t imm32; // the expanded result
- const uint32_t i = bit(opcode, 26);
- const uint32_t imm3 = bits(opcode, 14, 12);
- const uint32_t abcdefgh = bits(opcode, 7, 0);
- const uint32_t imm12 = i << 11 | imm3 << 8 | abcdefgh;
-
- if (bits(imm12, 11, 10) == 0)
- {
- switch (bits(imm12, 9, 8)) {
- default: // Keep static analyzer happy with a default case
- case 0:
- imm32 = abcdefgh;
- break;
-
- case 1:
- imm32 = abcdefgh << 16 | abcdefgh;
- break;
-
- case 2:
- imm32 = abcdefgh << 24 | abcdefgh << 8;
- break;
-
- case 3:
- imm32 = abcdefgh << 24 | abcdefgh << 16 | abcdefgh << 8 | abcdefgh;
- break;
- }
- carry_out = carry_in;
- }
- else
- {
- const uint32_t unrotated_value = 0x80 | bits(imm12, 6, 0);
- imm32 = ror(unrotated_value, 32, bits(imm12, 11, 7));
- carry_out = Bit32(imm32, 31);
+static inline uint32_t ThumbExpandImm_C(uint32_t opcode, uint32_t carry_in,
+ uint32_t &carry_out) {
+ uint32_t imm32; // the expanded result
+ const uint32_t i = bit(opcode, 26);
+ const uint32_t imm3 = bits(opcode, 14, 12);
+ const uint32_t abcdefgh = bits(opcode, 7, 0);
+ const uint32_t imm12 = i << 11 | imm3 << 8 | abcdefgh;
+
+ if (bits(imm12, 11, 10) == 0) {
+ switch (bits(imm12, 9, 8)) {
+ default: // Keep static analyzer happy with a default case
+ case 0:
+ imm32 = abcdefgh;
+ break;
+
+ case 1:
+ imm32 = abcdefgh << 16 | abcdefgh;
+ break;
+
+ case 2:
+ imm32 = abcdefgh << 24 | abcdefgh << 8;
+ break;
+
+ case 3:
+ imm32 = abcdefgh << 24 | abcdefgh << 16 | abcdefgh << 8 | abcdefgh;
+ break;
}
- return imm32;
+ carry_out = carry_in;
+ } else {
+ const uint32_t unrotated_value = 0x80 | bits(imm12, 6, 0);
+ imm32 = ror(unrotated_value, 32, bits(imm12, 11, 7));
+ carry_out = Bit32(imm32, 31);
+ }
+ return imm32;
}
-static inline uint32_t ThumbExpandImm(uint32_t opcode)
-{
- // 'carry_in' argument to following function call does not affect the imm32 result.
- uint32_t carry_in = 0;
- uint32_t carry_out;
- return ThumbExpandImm_C(opcode, carry_in, carry_out);
+static inline uint32_t ThumbExpandImm(uint32_t opcode) {
+ // 'carry_in' argument to following function call does not affect the imm32
+ // result.
+ uint32_t carry_in = 0;
+ uint32_t carry_out;
+ return ThumbExpandImm_C(opcode, carry_in, carry_out);
}
// imm32 = ZeroExtend(i:imm3:imm8, 32)
-static inline uint32_t ThumbImm12(uint32_t opcode)
-{
+static inline uint32_t ThumbImm12(uint32_t opcode) {
const uint32_t i = bit(opcode, 26);
const uint32_t imm3 = bits(opcode, 14, 12);
const uint32_t imm8 = bits(opcode, 7, 0);
@@ -372,15 +355,13 @@ static inline uint32_t ThumbImm12(uint32_t opcode)
}
// imm32 = ZeroExtend(imm7:'00', 32)
-static inline uint32_t ThumbImm7Scaled(uint32_t opcode)
-{
+static inline uint32_t ThumbImm7Scaled(uint32_t opcode) {
const uint32_t imm7 = bits(opcode, 6, 0);
return imm7 * 4;
}
// imm32 = ZeroExtend(imm8:'00', 32)
-static inline uint32_t ThumbImm8Scaled(uint32_t opcode)
-{
+static inline uint32_t ThumbImm8Scaled(uint32_t opcode) {
const uint32_t imm8 = bits(opcode, 7, 0);
return imm8 * 4;
}
@@ -389,6 +370,6 @@ static inline uint32_t ThumbImm8Scaled(uint32_t opcode)
// not permitted for many Thumb register specifiers.
static inline bool BadReg(uint32_t n) { return n == 13 || n == 15; }
-} // namespace lldb_private
+} // namespace lldb_private
-#endif // lldb_ARMUtils_h_
+#endif // lldb_ARMUtils_h_
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-04 02:33:59 +0000