From 3d45ca302dbf5ac22cfac8fb025c05c735c35e26 Mon Sep 17 00:00:00 2001
From: Andrew Waterman <waterman@cs.berkeley.edu>
Date: Sat, 30 Apr 2016 20:44:46 -0700
Subject: ERET -> xRET; change memory map

---
 encoding.h | 38 ++++++++++++++++++++++----------------
 1 file changed, 22 insertions(+), 16 deletions(-)

(limited to 'encoding.h')

diff --git a/encoding.h b/encoding.h
index c57804d..5cb7ff5 100644
--- a/encoding.h
+++ b/encoding.h
@@ -67,9 +67,12 @@
 #define IRQ_COP      12
 #define IRQ_HOST     13
 
-#define DEFAULT_RSTVEC 0x0
-#define DEFAULT_NMIVEC 0x4
-#define DEFAULT_MTVEC  0x8
+#define DEFAULT_RSTVEC     0x00001000
+#define DEFAULT_NMIVEC     0x00001004
+#define DEFAULT_MTVEC      0x00001010
+#define CONFIG_STRING_ADDR 0x0000100C
+#define EXT_IO_BASE        0x40000000
+#define DRAM_BASE          0x80000000
 
 // page table entry (PTE) fields
 #define PTE_V     0x001 // Valid
@@ -345,12 +348,18 @@
 #define MASK_LR_D  0xf9f0707f
 #define MATCH_SC_D 0x1800302f
 #define MASK_SC_D  0xf800707f
-#define MATCH_SCALL 0x73
-#define MASK_SCALL  0xffffffff
-#define MATCH_SBREAK 0x100073
-#define MASK_SBREAK  0xffffffff
+#define MATCH_ECALL 0x73
+#define MASK_ECALL  0xffffffff
+#define MATCH_EBREAK 0x100073
+#define MASK_EBREAK  0xffffffff
+#define MATCH_URET 0x200073
+#define MASK_URET  0xffffffff
 #define MATCH_SRET 0x10200073
 #define MASK_SRET  0xffffffff
+#define MATCH_HRET 0x20200073
+#define MASK_HRET  0xffffffff
+#define MATCH_MRET 0x30200073
+#define MASK_MRET  0xffffffff
 #define MATCH_SFENCE_VM 0x10400073
 #define MASK_SFENCE_VM  0xfff07fff
 #define MATCH_WFI 0x10500073
@@ -647,7 +656,6 @@
 #define CSR_MIDELEG 0x303
 #define CSR_MIE 0x304
 #define CSR_MTVEC 0x305
-#define CSR_MTIMECMP 0x321
 #define CSR_MSCRATCH 0x340
 #define CSR_MEPC 0x341
 #define CSR_MCAUSE 0x342
@@ -669,15 +677,13 @@
 #define CSR_MVENDORID 0xf11
 #define CSR_MARCHID 0xf12
 #define CSR_MIMPID 0xf13
-#define CSR_MCFGADDR 0xf14
-#define CSR_MHARTID 0xf15
+#define CSR_MHARTID 0xf14
 #define CSR_MTOHOST 0x7c0
 #define CSR_MFROMHOST 0x7c1
 #define CSR_MRESET 0x7c2
 #define CSR_CYCLEH 0xc80
 #define CSR_TIMEH 0xc81
 #define CSR_INSTRETH 0xc82
-#define CSR_MTIMECMPH 0x361
 #define CSR_MUCYCLE_DELTAH 0x780
 #define CSR_MUTIME_DELTAH 0x781
 #define CSR_MUINSTRET_DELTAH 0x782
@@ -787,9 +793,12 @@ DECLARE_INSN(amomaxu_d, MATCH_AMOMAXU_D, MASK_AMOMAXU_D)
 DECLARE_INSN(amoswap_d, MATCH_AMOSWAP_D, MASK_AMOSWAP_D)
 DECLARE_INSN(lr_d, MATCH_LR_D, MASK_LR_D)
 DECLARE_INSN(sc_d, MATCH_SC_D, MASK_SC_D)
-DECLARE_INSN(scall, MATCH_SCALL, MASK_SCALL)
-DECLARE_INSN(sbreak, MATCH_SBREAK, MASK_SBREAK)
+DECLARE_INSN(ecall, MATCH_ECALL, MASK_ECALL)
+DECLARE_INSN(ebreak, MATCH_EBREAK, MASK_EBREAK)
+DECLARE_INSN(uret, MATCH_URET, MASK_URET)
 DECLARE_INSN(sret, MATCH_SRET, MASK_SRET)
+DECLARE_INSN(hret, MATCH_HRET, MASK_HRET)
+DECLARE_INSN(mret, MATCH_MRET, MASK_MRET)
 DECLARE_INSN(sfence_vm, MATCH_SFENCE_VM, MASK_SFENCE_VM)
 DECLARE_INSN(wfi, MATCH_WFI, MASK_WFI)
 DECLARE_INSN(csrrw, MATCH_CSRRW, MASK_CSRRW)
@@ -952,7 +961,6 @@ DECLARE_CSR(medeleg, CSR_MEDELEG)
 DECLARE_CSR(mideleg, CSR_MIDELEG)
 DECLARE_CSR(mie, CSR_MIE)
 DECLARE_CSR(mtvec, CSR_MTVEC)
-DECLARE_CSR(mtimecmp, CSR_MTIMECMP)
 DECLARE_CSR(mscratch, CSR_MSCRATCH)
 DECLARE_CSR(mepc, CSR_MEPC)
 DECLARE_CSR(mcause, CSR_MCAUSE)
@@ -974,7 +982,6 @@ DECLARE_CSR(misa, CSR_MISA)
 DECLARE_CSR(mvendorid, CSR_MVENDORID)
 DECLARE_CSR(marchid, CSR_MARCHID)
 DECLARE_CSR(mimpid, CSR_MIMPID)
-DECLARE_CSR(mcfgaddr, CSR_MCFGADDR)
 DECLARE_CSR(mhartid, CSR_MHARTID)
 DECLARE_CSR(mtohost, CSR_MTOHOST)
 DECLARE_CSR(mfromhost, CSR_MFROMHOST)
@@ -982,7 +989,6 @@ DECLARE_CSR(mreset, CSR_MRESET)
 DECLARE_CSR(cycleh, CSR_CYCLEH)
 DECLARE_CSR(timeh, CSR_TIMEH)
 DECLARE_CSR(instreth, CSR_INSTRETH)
-DECLARE_CSR(mtimecmph, CSR_MTIMECMPH)
 DECLARE_CSR(mucycle_deltah, CSR_MUCYCLE_DELTAH)
 DECLARE_CSR(mutime_deltah, CSR_MUTIME_DELTAH)
 DECLARE_CSR(muinstret_deltah, CSR_MUINSTRET_DELTAH)
-- 
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