The Control Transfer Records (CTR) extension provides a method to
record a limited branch history in register-accessible internal chip
storage.
This extension is similar to Arch LBR in x86 and BRBE in ARM.
The Extension has been stable and the latest release can be found here
https://github.com/riscv/riscv-control-transfer-records/release
Signed-off-by: Rajnesh Kanwal <rkanwal@rivosinc.com>
---
target/riscv/cpu_bits.h | 154 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 154 insertions(+)
diff --git a/target/riscv/cpu_bits.h b/target/riscv/cpu_bits.h
index 86e15381c8..71ddccaf1a 100644
--- a/target/riscv/cpu_bits.h
+++ b/target/riscv/cpu_bits.h
@@ -242,6 +242,17 @@
#define CSR_SIEH 0x114
#define CSR_SIPH 0x154
+/* Machine-Level Control transfer records CSRs */
+#define CSR_MCTRCTL 0x34e
+
+/* Supervisor-Level Control transfer records CSRs */
+#define CSR_SCTRCTL 0x14e
+#define CSR_SCTRSTATUS 0x14f
+#define CSR_SCTRDEPTH 0x15f
+
+/* VS-Level Control transfer records CSRs */
+#define CSR_VSCTRCTL 0x24e
+
/* Hpervisor CSRs */
#define CSR_HSTATUS 0x600
#define CSR_HEDELEG 0x602
@@ -339,6 +350,7 @@
#define SMSTATEEN0_CS (1ULL << 0)
#define SMSTATEEN0_FCSR (1ULL << 1)
#define SMSTATEEN0_JVT (1ULL << 2)
+#define SMSTATEEN0_CTR (1ULL << 54)
#define SMSTATEEN0_HSCONTXT (1ULL << 57)
#define SMSTATEEN0_IMSIC (1ULL << 58)
#define SMSTATEEN0_AIA (1ULL << 59)
@@ -854,6 +866,148 @@ typedef enum RISCVException {
#define UMTE_U_PM_INSN U_PM_INSN
#define UMTE_MASK (UMTE_U_PM_ENABLE | MMTE_U_PM_CURRENT | UMTE_U_PM_INSN)
+/* mctrctl CSR bits. */
+#define MCTRCTL_U_ENABLE BIT(0)
+#define MCTRCTL_S_ENABLE BIT(1)
+#define MCTRCTL_M_ENABLE BIT(2)
+#define MCTRCTL_RASEMU BIT(7)
+#define MCTRCTL_STE BIT(8)
+#define MCTRCTL_MTE BIT(9)
+#define MCTRCTL_BPFRZ BIT(11)
+#define MCTRCTL_LCOFIFRZ BIT(12)
+#define MCTRCTL_EXCINH BIT(33)
+#define MCTRCTL_INTRINH BIT(34)
+#define MCTRCTL_TRETINH BIT(35)
+#define MCTRCTL_NTBREN BIT(36)
+#define MCTRCTL_TKBRINH BIT(37)
+#define MCTRCTL_INDCALL_INH BIT(40)
+#define MCTRCTL_DIRCALL_INH BIT(41)
+#define MCTRCTL_INDJUMP_INH BIT(42)
+#define MCTRCTL_DIRJUMP_INH BIT(43)
+#define MCTRCTL_CORSWAP_INH BIT(44)
+#define MCTRCTL_RET_INH BIT(45)
+#define MCTRCTL_INDOJUMP_INH BIT(46)
+#define MCTRCTL_DIROJUMP_INH BIT(47)
+
+#define MCTRCTL_INH_START 32U
+
+#define MCTRCTL_MASK (MCTRCTL_M_ENABLE | MCTRCTL_S_ENABLE | \
+ MCTRCTL_U_ENABLE | MCTRCTL_RASEMU | \
+ MCTRCTL_MTE | MCTRCTL_STE | \
+ MCTRCTL_BPFRZ | MCTRCTL_LCOFIFRZ | \
+ MCTRCTL_EXCINH | MCTRCTL_INTRINH | \
+ MCTRCTL_TRETINH | MCTRCTL_NTBREN | \
+ MCTRCTL_TKBRINH | MCTRCTL_INDCALL_INH | \
+ MCTRCTL_DIRCALL_INH | MCTRCTL_INDJUMP_INH | \
+ MCTRCTL_DIRJUMP_INH | MCTRCTL_CORSWAP_INH | \
+ MCTRCTL_RET_INH | MCTRCTL_INDOJUMP_INH | \
+ MCTRCTL_DIROJUMP_INH)
+
+/* sctrctl CSR bits. */
+#define SCTRCTL_U_ENABLE MCTRCTL_U_ENABLE
+#define SCTRCTL_S_ENABLE MCTRCTL_S_ENABLE
+#define SCTRCTL_RASEMU MCTRCTL_RASEMU
+#define SCTRCTL_STE MCTRCTL_STE
+#define SCTRCTL_BPFRZ MCTRCTL_BPFRZ
+#define SCTRCTL_LCOFIFRZ MCTRCTL_LCOFIFRZ
+#define SCTRCTL_EXCINH MCTRCTL_EXCINH
+#define SCTRCTL_INTRINH MCTRCTL_INTRINH
+#define SCTRCTL_TRETINH MCTRCTL_TRETINH
+#define SCTRCTL_NTBREN MCTRCTL_NTBREN
+#define SCTRCTL_TKBRINH MCTRCTL_TKBRINH
+#define SCTRCTL_INDCALL_INH MCTRCTL_INDCALL_INH
+#define SCTRCTL_DIRCALL_INH MCTRCTL_DIRCALL_INH
+#define SCTRCTL_INDJUMP_INH MCTRCTL_INDJUMP_INH
+#define SCTRCTL_DIRJUMP_INH MCTRCTL_DIRJUMP_INH
+#define SCTRCTL_CORSWAP_INH MCTRCTL_CORSWAP_INH
+#define SCTRCTL_RET_INH MCTRCTL_RET_INH
+#define SCTRCTL_INDOJUMP_INH MCTRCTL_INDOJUMP_INH
+#define SCTRCTL_DIROJUMP_INH MCTRCTL_DIROJUMP_INH
+
+#define SCTRCTL_MASK (SCTRCTL_S_ENABLE | SCTRCTL_U_ENABLE | \
+ SCTRCTL_RASEMU | SCTRCTL_STE | \
+ SCTRCTL_BPFRZ | SCTRCTL_LCOFIFRZ | \
+ SCTRCTL_EXCINH | SCTRCTL_INTRINH | \
+ SCTRCTL_TRETINH | SCTRCTL_NTBREN | \
+ SCTRCTL_TKBRINH | SCTRCTL_INDCALL_INH | \
+ SCTRCTL_DIRCALL_INH | SCTRCTL_INDJUMP_INH | \
+ SCTRCTL_DIRJUMP_INH | SCTRCTL_CORSWAP_INH | \
+ SCTRCTL_RET_INH | SCTRCTL_INDOJUMP_INH | \
+ SCTRCTL_DIROJUMP_INH)
+
+/* sctrstatus CSR bits. */
+#define SCTRSTATUS_WRPTR_MASK 0xFF
+#define SCTRSTATUS_FROZEN BIT(31)
+#define SCTRSTATUS_MASK (SCTRSTATUS_WRPTR_MASK | SCTRSTATUS_FROZEN)
+
+/* sctrdepth CSR bits. */
+#define SCTRDEPTH_MASK 0x7
+#define SCTRDEPTH_MIN 0U /* 16 Entries. */
+#define SCTRDEPTH_MAX 4U /* 256 Entries. */
+
+/* vsctrctl CSR bits. */
+#define VSCTRCTL_VU_ENABLE MCTRCTL_U_ENABLE
+#define VSCTRCTL_VS_ENABLE MCTRCTL_S_ENABLE
+#define VSCTRCTL_RASEMU MCTRCTL_RASEMU
+#define VSCTRCTL_VSTE MCTRCTL_STE
+#define VSCTRCTL_BPFRZ MCTRCTL_BPFRZ
+#define VSCTRCTL_LCOFIFRZ MCTRCTL_LCOFIFRZ
+#define VSCTRCTL_EXCINH MCTRCTL_EXCINH
+#define VSCTRCTL_INTRINH MCTRCTL_INTRINH
+#define VSCTRCTL_TRETINH MCTRCTL_TRETINH
+#define VSCTRCTL_NTBREN MCTRCTL_NTBREN
+#define VSCTRCTL_TKBRINH MCTRCTL_TKBRINH
+#define VSCTRCTL_INDCALL_INH MCTRCTL_INDCALL_INH
+#define VSCTRCTL_DIRCALL_INH MCTRCTL_DIRCALL_INH
+#define VSCTRCTL_INDJUMP_INH MCTRCTL_INDJUMP_INH
+#define VSCTRCTL_DIRJUMP_INH MCTRCTL_DIRJUMP_INH
+#define VSCTRCTL_CORSWAP_INH MCTRCTL_CORSWAP_INH
+#define VSCTRCTL_RET_INH MCTRCTL_RET_INH
+#define VSCTRCTL_INDOJUMP_INH MCTRCTL_INDOJUMP_INH
+#define VSCTRCTL_DIROJUMP_INH MCTRCTL_DIROJUMP_INH
+
+#define VSCTRCTL_MASK (VSCTRCTL_VS_ENABLE | VSCTRCTL_VU_ENABLE | \
+ VSCTRCTL_RASEMU | VSCTRCTL_VSTE | \
+ VSCTRCTL_BPFRZ | VSCTRCTL_LCOFIFRZ | \
+ VSCTRCTL_EXCINH | VSCTRCTL_INTRINH | \
+ VSCTRCTL_TRETINH | VSCTRCTL_NTBREN | \
+ VSCTRCTL_TKBRINH | VSCTRCTL_INDCALL_INH | \
+ VSCTRCTL_DIRCALL_INH | VSCTRCTL_INDJUMP_INH | \
+ VSCTRCTL_DIRJUMP_INH | VSCTRCTL_CORSWAP_INH | \
+ VSCTRCTL_RET_INH | VSCTRCTL_INDOJUMP_INH | \
+ VSCTRCTL_DIROJUMP_INH)
+
+#define CTR_ENTRIES_FIRST 0x200
+#define CTR_ENTRIES_LAST 0x2ff
+
+#define CTRSOURCE_VALID BIT(0)
+#define CTRTARGET_MISP BIT(0)
+
+#define CTRDATA_TYPE_MASK 0xF
+#define CTRDATA_CCV BIT(15)
+#define CTRDATA_CCM_MASK 0xFFF0000
+#define CTRDATA_CCE_MASK 0xF0000000
+
+#define CTRDATA_MASK (CTRDATA_TYPE_MASK | CTRDATA_CCV | \
+ CTRDATA_CCM_MASK | CTRDATA_CCE_MASK)
+
+#define CTRDATA_TYPE_NONE 0
+#define CTRDATA_TYPE_EXCEPTION 1
+#define CTRDATA_TYPE_INTERRUPT 2
+#define CTRDATA_TYPE_EXCEP_INT_RET 3
+#define CTRDATA_TYPE_NONTAKEN_BRANCH 4
+#define CTRDATA_TYPE_TAKEN_BRANCH 5
+#define CTRDATA_TYPE_RESERVED_0 6
+#define CTRDATA_TYPE_RESERVED_1 7
+#define CTRDATA_TYPE_INDIRECT_CALL 8
+#define CTRDATA_TYPE_DIRECT_CALL 9
+#define CTRDATA_TYPE_INDIRECT_JUMP 10
+#define CTRDATA_TYPE_DIRECT_JUMP 11
+#define CTRDATA_TYPE_CO_ROUTINE_SWAP 12
+#define CTRDATA_TYPE_RETURN 13
+#define CTRDATA_TYPE_OTHER_INDIRECT_JUMP 14
+#define CTRDATA_TYPE_OTHER_DIRECT_JUMP 15
+
/* MISELECT, SISELECT, and VSISELECT bits (AIA) */
#define ISELECT_IPRIO0 0x30
#define ISELECT_IPRIO15 0x3f
--
2.34.1© 2016 - 2024 Red Hat, Inc.