From ea2fec121a59136b0dada11743bf6c545c996c65 Mon Sep 17 00:00:00 2001
From: Ved Shanbhogue <91900059+ved-rivos@users.noreply.github.com>
Date: Tue, 4 Jun 2024 16:20:56 -0500
Subject: Add unratified Smctr/Ssctr instructions and CSRs (#252)

---
 csrs.csv               |  5 ++++
 encoding.h             | 71 ++++++++++++++++++++++++++++++++++++++++++++++++++
 unratified/rv_smdbltrp |  1 +
 3 files changed, 77 insertions(+)
 create mode 100644 unratified/rv_smdbltrp

diff --git a/csrs.csv b/csrs.csv
index 81e5b27..6aae1e9 100644
--- a/csrs.csv
+++ b/csrs.csv
@@ -61,6 +61,8 @@
 0x143, "stval"
 0x144, "sip"
 0x14D, "stimecmp"
+0x14E, "sctrctl"
+0x14F, "sctrstatus"
 0x150, "siselect"
 0x151, "sireg"
 0x152, "sireg2"
@@ -69,6 +71,7 @@
 0x156, "sireg5"
 0x157, "sireg6"
 0x15C, "stopei"
+0x15F, "sctrdepth"
 0x180, "satp"
 0x181, "srmcfg"
 0x5A8, "scontext"
@@ -81,6 +84,7 @@
 0x243, "vstval"
 0x244, "vsip"
 0x24D, "vstimecmp"
+0x24E, "vsctrctl"
 0x250, "vsiselect"
 0x251, "vsireg"
 0x252, "vsireg2"
@@ -153,6 +157,7 @@
 0x344, "mip"
 0x34a, "mtinst"
 0x34b, "mtval2"
+0x34E, "mctrctl"
 0x350, "miselect"
 0x351, "mireg"
 0x352, "mireg2"
diff --git a/encoding.h b/encoding.h
index 01190e3..6de74b3 100644
--- a/encoding.h
+++ b/encoding.h
@@ -179,6 +179,7 @@
 #define MSTATEEN0_CS       0x00000001
 #define MSTATEEN0_FCSR     0x00000002
 #define MSTATEEN0_JVT      0x00000004
+#define MSTATEEN0_CTR      0x0040000000000000
 #define MSTATEEN0_PRIV114  0x0080000000000000
 #define MSTATEEN0_HCONTEXT 0x0200000000000000
 #define MSTATEEN0_AIA      0x0800000000000000
@@ -186,6 +187,7 @@
 #define MSTATEEN0_HENVCFG  0x4000000000000000
 #define MSTATEEN_HSTATEEN  0x8000000000000000
 
+#define MSTATEEN0H_CTR      0x00400000
 #define MSTATEEN0H_PRIV114  0x00800000
 #define MSTATEEN0H_HCONTEXT 0x02000000
 #define MSTATEEN0H_AIA      0x08000000
@@ -238,12 +240,14 @@
 #define HSTATEEN0_CS       0x00000001
 #define HSTATEEN0_FCSR     0x00000002
 #define HSTATEEN0_JVT      0x00000004
+#define MSTATEEN0_CTR      0x0040000000000000
 #define HSTATEEN0_SCONTEXT 0x0200000000000000
 #define HSTATEEN0_AIA      0x0800000000000000
 #define HSTATEEN0_CSRIND   0x1000000000000000
 #define HSTATEEN0_SENVCFG  0x4000000000000000
 #define HSTATEEN_SSTATEEN  0x8000000000000000
 
+#define MSTATEEN0H_CTR      0x00400000
 #define HSTATEEN0H_SCONTEXT 0x02000000
 #define HSTATEEN0H_AIA      0x08000000
 #define HSTATEEN0H_CSRIND   0x10000000
@@ -326,6 +330,73 @@
 #define PMP_NA4   0x10
 #define PMP_NAPOT 0x18
 
+#define MCTRCTL_U          0x0000000000000001
+#define MCTRCTL_S          0x0000000000000002
+#define MCTRCTL_M          0x0000000000000004
+#define MCTRCTL_RASEMU     0x0000000000000080
+#define MCTRCTL_STE        0x0000000000000100
+#define MCTRCTL_MTE        0x0000000000000200
+#define MCTRCTL_BPFRZ      0x0000000000000800
+#define MCTRCTL_LCOFIFRZ   0x0000000000001000
+#define MCTRCTL_EXCINH     0x0000000200000000
+#define MCTRCTL_INTRINH    0x0000000400000000
+#define MCTRCTL_TRETINH    0x0000000800000000
+#define MCTRCTL_NTBREN     0x0000001000000000
+#define MCTRCTL_TKBRINH    0x0000002000000000
+#define MCTRCTL_INDCALLINH 0x0000010000000000
+#define MCTRCTL_DIRCALLINH 0x0000020000000000
+#define MCTRCTL_INDJMPINH  0x0000040000000000
+#define MCTRCTL_DIRJMPINH  0x0000080000000000
+#define MCTRCTL_CORSWAPINH 0x0000100000000000
+#define MCTRCTL_RETINH     0x0000200000000000
+#define MCTRCTL_INDLJMPINH 0x0000400000000000
+#define MCTRCTL_DIRLJMPINH 0x0000800000000000
+
+#define SCTRCTL_U          0x0000000000000001
+#define SCTRCTL_S          0x0000000000000002
+#define SCTRCTL_RASEMU     0x0000000000000080
+#define SCTRCTL_STE        0x0000000000000100
+#define SCTRCTL_BPFRZ      0x0000000000000800
+#define SCTRCTL_LCOFIFRZ   0x0000000000001000
+#define SCTRCTL_EXCINH     0x0000000200000000
+#define SCTRCTL_INTRINH    0x0000000400000000
+#define SCTRCTL_TRETINH    0x0000000800000000
+#define SCTRCTL_NTBREN     0x0000001000000000
+#define SCTRCTL_TKBRINH    0x0000002000000000
+#define SCTRCTL_INDCALLINH 0x0000010000000000
+#define SCTRCTL_DIRCALLINH 0x0000020000000000
+#define SCTRCTL_INDJMPINH  0x0000040000000000
+#define SCTRCTL_DIRJMPINH  0x0000080000000000
+#define SCTRCTL_CORSWAPINH 0x0000100000000000
+#define SCTRCTL_RETINH     0x0000200000000000
+#define SCTRCTL_INDLJMPINH 0x0000400000000000
+#define SCTRCTL_DIRLJMPINH 0x0000800000000000
+
+#define VSCTRCTL_U          0x0000000000000001
+#define VSCTRCTL_S          0x0000000000000002
+#define VSCTRCTL_RASEMU     0x0000000000000080
+#define VSCTRCTL_STE        0x0000000000000100
+#define VSCTRCTL_BPFRZ      0x0000000000000800
+#define VSCTRCTL_LCOFIFRZ   0x0000000000001000
+#define VSCTRCTL_EXCINH     0x0000000200000000
+#define VSCTRCTL_INTRINH    0x0000000400000000
+#define VSCTRCTL_TRETINH    0x0000000800000000
+#define VSCTRCTL_NTBREN     0x0000001000000000
+#define VSCTRCTL_TKBRINH    0x0000002000000000
+#define VSCTRCTL_INDCALLINH 0x0000010000000000
+#define VSCTRCTL_DIRCALLINH 0x0000020000000000
+#define VSCTRCTL_INDJMPINH  0x0000040000000000
+#define VSCTRCTL_DIRJMPINH  0x0000080000000000
+#define VSCTRCTL_CORSWAPINH 0x0000100000000000
+#define VSCTRCTL_RETINH     0x0000200000000000
+#define VSCTRCTL_INDLJMPINH 0x0000400000000000
+#define VSCTRCTL_DIRLJMPINH 0x0000800000000000
+
+#define SCTRDEPTH_DEPTH     0x00000007
+
+#define SCTRSTATUS_WRPTR    0x000000FF
+#define SCTRSTATUS_FROZEN   0x80000000
+
 #define IRQ_U_SOFT        0
 #define IRQ_S_SOFT        1
 #define IRQ_VS_SOFT       2
diff --git a/unratified/rv_smdbltrp b/unratified/rv_smdbltrp
new file mode 100644
index 0000000..49dd9a0
--- /dev/null
+++ b/unratified/rv_smdbltrp
@@ -0,0 +1 @@
+sctrclr     11..7=0 19..15=0 31..20=0x104 14..12=0 6..2=0x1C 1..0=3
-- 
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