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Diffstat (limited to 'src/arch/arm/isa/formats/aarch64.isa')
-rw-r--r--src/arch/arm/isa/formats/aarch64.isa182
1 files changed, 120 insertions, 62 deletions
diff --git a/src/arch/arm/isa/formats/aarch64.isa b/src/arch/arm/isa/formats/aarch64.isa
index 722cd7415..43dd557aa 100644
--- a/src/arch/arm/isa/formats/aarch64.isa
+++ b/src/arch/arm/isa/formats/aarch64.isa
@@ -782,68 +782,126 @@ namespace Aarch64
return new Unknown64(machInst);
}
} else if (bits(machInst, 21) == 1) {
- if (bits(machInst, 11, 10) != 0x2)
- return new Unknown64(machInst);
- if (!bits(machInst, 14))
- return new Unknown64(machInst);
- IntRegIndex rt = (IntRegIndex)(uint32_t)bits(machInst, 4, 0);
- IntRegIndex rn = (IntRegIndex)(uint32_t)bits(machInst, 9, 5);
- IntRegIndex rnsp = makeSP(rn);
- IntRegIndex rm = (IntRegIndex)(uint32_t)bits(machInst, 20, 16);
- ArmExtendType type =
- (ArmExtendType)(uint32_t)bits(machInst, 15, 13);
- uint8_t s = bits(machInst, 12);
- switch (switchVal) {
- case 0x00:
- return new STRB64_REG(machInst, rt, rnsp, rm, type, 0);
- case 0x01:
- return new LDRB64_REG(machInst, rt, rnsp, rm, type, 0);
- case 0x02:
- return new LDRSBX64_REG(machInst, rt, rnsp, rm, type, 0);
- case 0x03:
- return new LDRSBW64_REG(machInst, rt, rnsp, rm, type, 0);
- case 0x04:
- return new STRBFP64_REG(machInst, rt, rnsp, rm, type, 0);
- case 0x05:
- return new LDRBFP64_REG(machInst, rt, rnsp, rm, type, 0);
- case 0x6:
- return new BigFpMemReg("str", machInst, false,
- rt, rnsp, rm, type, s * 4);
- case 0x7:
- return new BigFpMemReg("ldr", machInst, true,
- rt, rnsp, rm, type, s * 4);
- case 0x08:
- return new STRH64_REG(machInst, rt, rnsp, rm, type, s);
- case 0x09:
- return new LDRH64_REG(machInst, rt, rnsp, rm, type, s);
- case 0x0a:
- return new LDRSHX64_REG(machInst, rt, rnsp, rm, type, s);
- case 0x0b:
- return new LDRSHW64_REG(machInst, rt, rnsp, rm, type, s);
- case 0x0c:
- return new STRHFP64_REG(machInst, rt, rnsp, rm, type, s);
- case 0x0d:
- return new LDRHFP64_REG(machInst, rt, rnsp, rm, type, s);
- case 0x10:
- return new STRW64_REG(machInst, rt, rnsp, rm, type, s * 2);
- case 0x11:
- return new LDRW64_REG(machInst, rt, rnsp, rm, type, s * 2);
- case 0x12:
- return new LDRSW64_REG(machInst, rt, rnsp, rm, type, s * 2);
- case 0x14:
- return new STRSFP64_REG(machInst, rt, rnsp, rm, type, s * 2);
- case 0x15:
- return new LDRSFP64_REG(machInst, rt, rnsp, rm, type, s * 2);
- case 0x18:
- return new STRX64_REG(machInst, rt, rnsp, rm, type, s * 3);
- case 0x19:
- return new LDRX64_REG(machInst, rt, rnsp, rm, type, s * 3);
- case 0x1a:
- return new PRFM64_REG(machInst, rt, rnsp, rm, type, s * 3);
- case 0x1c:
- return new STRDFP64_REG(machInst, rt, rnsp, rm, type, s * 3);
- case 0x1d:
- return new LDRDFP64_REG(machInst, rt, rnsp, rm, type, s * 3);
+ uint8_t group = bits(machInst, 11, 10);
+ switch (group) {
+ case 0x0:
+ {
+ if ((switchVal & 0x7) == 0x2 &&
+ bits(machInst, 20, 12) == 0x1fc) {
+ IntRegIndex rt = (IntRegIndex)(uint32_t)
+ bits(machInst, 4, 0);
+ IntRegIndex rn = (IntRegIndex)(uint32_t)
+ bits(machInst, 9, 5);
+ IntRegIndex rnsp = makeSP(rn);
+ uint8_t size = bits(machInst, 31, 30);
+ switch (size) {
+ case 0x0:
+ return new LDAPRB64(machInst, rt, rnsp);
+ case 0x1:
+ return new LDAPRH64(machInst, rt, rnsp);
+ case 0x2:
+ return new LDAPRW64(machInst, rt, rnsp);
+ case 0x3:
+ return new LDAPRX64(machInst, rt, rnsp);
+ default:
+ M5_UNREACHABLE;
+ }
+ } else {
+ return new Unknown64(machInst);
+ }
+ }
+ case 0x2:
+ {
+ if (!bits(machInst, 14))
+ return new Unknown64(machInst);
+ IntRegIndex rt = (IntRegIndex)(uint32_t)
+ bits(machInst, 4, 0);
+ IntRegIndex rn = (IntRegIndex)(uint32_t)
+ bits(machInst, 9, 5);
+ IntRegIndex rnsp = makeSP(rn);
+ IntRegIndex rm = (IntRegIndex)(uint32_t)
+ bits(machInst, 20, 16);
+ ArmExtendType type =
+ (ArmExtendType)(uint32_t)bits(machInst, 15, 13);
+ uint8_t s = bits(machInst, 12);
+ switch (switchVal) {
+ case 0x00:
+ return new STRB64_REG(machInst, rt, rnsp, rm,
+ type, 0);
+ case 0x01:
+ return new LDRB64_REG(machInst, rt, rnsp, rm,
+ type, 0);
+ case 0x02:
+ return new LDRSBX64_REG(machInst, rt, rnsp, rm,
+ type, 0);
+ case 0x03:
+ return new LDRSBW64_REG(machInst, rt, rnsp, rm,
+ type, 0);
+ case 0x04:
+ return new STRBFP64_REG(machInst, rt, rnsp, rm,
+ type, 0);
+ case 0x05:
+ return new LDRBFP64_REG(machInst, rt, rnsp, rm,
+ type, 0);
+ case 0x6:
+ return new BigFpMemReg("str", machInst, false,
+ rt, rnsp, rm, type, s * 4);
+ case 0x7:
+ return new BigFpMemReg("ldr", machInst, true,
+ rt, rnsp, rm, type, s * 4);
+ case 0x08:
+ return new STRH64_REG(machInst, rt, rnsp, rm,
+ type, s);
+ case 0x09:
+ return new LDRH64_REG(machInst, rt, rnsp, rm,
+ type, s);
+ case 0x0a:
+ return new LDRSHX64_REG(machInst, rt, rnsp, rm,
+ type, s);
+ case 0x0b:
+ return new LDRSHW64_REG(machInst, rt, rnsp, rm,
+ type, s);
+ case 0x0c:
+ return new STRHFP64_REG(machInst, rt, rnsp, rm,
+ type, s);
+ case 0x0d:
+ return new LDRHFP64_REG(machInst, rt, rnsp, rm,
+ type, s);
+ case 0x10:
+ return new STRW64_REG(machInst, rt, rnsp, rm,
+ type, s * 2);
+ case 0x11:
+ return new LDRW64_REG(machInst, rt, rnsp, rm,
+ type, s * 2);
+ case 0x12:
+ return new LDRSW64_REG(machInst, rt, rnsp, rm,
+ type, s * 2);
+ case 0x14:
+ return new STRSFP64_REG(machInst, rt, rnsp, rm,
+ type, s * 2);
+ case 0x15:
+ return new LDRSFP64_REG(machInst, rt, rnsp, rm,
+ type, s * 2);
+ case 0x18:
+ return new STRX64_REG(machInst, rt, rnsp, rm,
+ type, s * 3);
+ case 0x19:
+ return new LDRX64_REG(machInst, rt, rnsp, rm,
+ type, s * 3);
+ case 0x1a:
+ return new PRFM64_REG(machInst, rt, rnsp, rm,
+ type, s * 3);
+ case 0x1c:
+ return new STRDFP64_REG(machInst, rt, rnsp, rm,
+ type, s * 3);
+ case 0x1d:
+ return new LDRDFP64_REG(machInst, rt, rnsp, rm,
+ type, s * 3);
+ default:
+ return new Unknown64(machInst);
+
+ }
+ }
default:
return new Unknown64(machInst);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-12 17:18:04 +0000