From 74fe66dcecfa113b39809ca6ca66e1d1645ca1ae Mon Sep 17 00:00:00 2001
From: Yunsup Lee <yunsup@cs.berkeley.edu>
Date: Fri, 18 Oct 2013 22:28:23 -0700
Subject: [PATCH] implement vxcptsave/vxcptrestore

---
 hwacha/decode_hwacha.h      |  2 ++
 hwacha/decode_hwacha_ut.h   |  3 ---
 hwacha/insns/vxcptrestore.h | 39 +++++++++++++++++++++++++++++++++++
 hwacha/insns/vxcptsave.h    | 41 +++++++++++++++++++++++++++++++++++++
 4 files changed, 82 insertions(+), 3 deletions(-)

diff --git a/hwacha/decode_hwacha.h b/hwacha/decode_hwacha.h
index 9353cb9..b7069fa 100644
--- a/hwacha/decode_hwacha.h
+++ b/hwacha/decode_hwacha.h
@@ -12,11 +12,13 @@
 #define NFPR (h->get_ct_state()->nfpr)
 #define MAXVL (h->get_ct_state()->maxvl)
 #define VL (h->get_ct_state()->vl)
+#define UTIDX (h->get_ct_state()->count)
 #define VF_PC (h->get_ct_state()->vf_pc)
 #define WRITE_NXPR(nxprnext) (h->get_ct_state()->nxpr = (nxprnext))
 #define WRITE_NFPR(nfprnext) (h->get_ct_state()->nfpr = (nfprnext))
 #define WRITE_MAXVL(maxvlnext) (h->get_ct_state()->maxvl = (maxvlnext))
 #define WRITE_VL(vlnext) (h->get_ct_state()->vl = (vlnext))
+#define WRITE_UTIDX(value) (h->get_ct_state()->count = (value))
 #define WRITE_VF_PC(pcnext) (h->get_ct_state()->vf_pc = (pcnext))
 
 #define INSN_RS1 (insn.rs1())
diff --git a/hwacha/decode_hwacha_ut.h b/hwacha/decode_hwacha_ut.h
index 44b993b..a07af82 100644
--- a/hwacha/decode_hwacha_ut.h
+++ b/hwacha/decode_hwacha_ut.h
@@ -6,9 +6,6 @@
 #include "hwacha.h"
 #include "hwacha_xcpt.h"
 
-#define UTIDX (h->get_ct_state()->count)
-#define WRITE_UTIDX(value) (h->get_ct_state()->count = (value))
-
 #undef RS1
 #undef RS2
 #undef WRITE_RD
diff --git a/hwacha/insns/vxcptrestore.h b/hwacha/insns/vxcptrestore.h
index cb3d8f0..db7a62e 100644
--- a/hwacha/insns/vxcptrestore.h
+++ b/hwacha/insns/vxcptrestore.h
@@ -1 +1,40 @@
 require_supervisor_hwacha;
+reg_t addr = XS1;
+
+#define LOAD_B(addr) \
+  (addr += 1, p->get_mmu()->load_uint8(addr-1))
+
+#define LOAD_W(addr) \
+  (addr += 4, p->get_mmu()->load_uint32(addr-4))
+
+#define LOAD_D(addr) \
+  (addr += 8, p->get_mmu()->load_uint64(addr-8))
+
+
+WRITE_NXPR(LOAD_W(addr));
+WRITE_NFPR(LOAD_W(addr));
+WRITE_MAXVL(LOAD_W(addr));
+WRITE_VL(LOAD_W(addr));
+WRITE_UTIDX(LOAD_W(addr));
+addr += 4;
+WRITE_VF_PC(LOAD_D(addr));
+
+for (uint32_t x=1; x<NXPR; x++) {
+  for (uint32_t i=0; i<VL; i++) {
+    UT_WRITE_XPR(i, x, LOAD_D(addr));
+  }
+}
+
+for (uint32_t f=0; f<NFPR; f++) {
+  for (uint32_t i=0; i<VL; i++) {
+    UT_WRITE_FPR(i, f, LOAD_D(addr));
+  }
+}
+
+for (uint32_t i=0; i<VL; i++) {
+  h->get_ut_state(i)->run = LOAD_B(addr);
+}
+
+#undef LOAD_B
+#undef LOAD_W
+#undef LOAD_D
diff --git a/hwacha/insns/vxcptsave.h b/hwacha/insns/vxcptsave.h
index cb3d8f0..2ff7761 100644
--- a/hwacha/insns/vxcptsave.h
+++ b/hwacha/insns/vxcptsave.h
@@ -1 +1,42 @@
 require_supervisor_hwacha;
+reg_t addr = XS1;
+
+#define STORE_B(addr, value) \
+  p->get_mmu()->store_uint8(addr, value); \
+  addr += 1; \
+
+#define STORE_W(addr, value) \
+  p->get_mmu()->store_uint32(addr, value); \
+  addr += 4; \
+
+#define STORE_D(addr, value) \
+  p->get_mmu()->store_uint64(addr, value); \
+  addr += 8; \
+
+STORE_W(addr, NXPR);
+STORE_W(addr, NFPR);
+STORE_W(addr, MAXVL);
+STORE_W(addr, VL);
+STORE_W(addr, UTIDX);
+addr += 4;
+STORE_D(addr, VF_PC);
+
+for (uint32_t x=1; x<NXPR; x++) {
+  for (uint32_t i=0; i<VL; i++) {
+    STORE_D(addr, UT_READ_XPR(i, x));
+  }
+}
+
+for (uint32_t f=0; f<NFPR; f++) {
+  for (uint32_t i=0; i<VL; i++) {
+    STORE_D(addr, UT_READ_FPR(i, f));
+  }
+}
+
+for (uint32_t i=0; i<VL; i++) {
+  STORE_B(addr, h->get_ut_state(i)->run);
+}
+
+#undef STORE_B
+#undef STORE_W
+#undef STORE_D
-- 
2.30.2