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From 0bf4b0ac18d1ea41b32ad781d214b295ca1998f3 Mon Sep 17 00:00:00 2001
From: Aneesh Bansal <aneesh.bansal@freescale.com>
Date: Mon, 21 Nov 2011 17:31:39 +0530
Subject: [PATCH] Added support for PPC instructions mfatbu, mfatbl.
Upstream-Status: Pending
Signed-off-by: Aneesh Bansal <aneesh.bansal@freescale.com>
---
Currently Valgrind 3.7.0 does not have support for PPC instructions mfatbu and mfatbl. When we run a USDPAA application with VALGRIND, the following error is given by valgrind :
dis_proc_ctl(ppc)(mfspr,SPR)(0x20F)
disInstr(ppc): unhandled instruction: 0x7C0F82A6
VEX/priv/guest_ppc_defs.h | 2 ++
VEX/priv/guest_ppc_helpers.c | 18 ++++++++++++++++++
VEX/priv/guest_ppc_toIR.c | 22 ++++++++++++++++++++++
3 files changed, 42 insertions(+), 0 deletions(-)
diff --git a/VEX/priv/guest_ppc_defs.h b/VEX/priv/guest_ppc_defs.h
index dd3c62e..11a34aa 100644
--- a/VEX/priv/guest_ppc_defs.h
+++ b/VEX/priv/guest_ppc_defs.h
@@ -146,6 +146,8 @@ extern UInt ppc32g_dirtyhelper_MFSPR_268_269 ( UInt );
extern UInt ppc32g_dirtyhelper_MFSPR_287 ( void );
+extern UInt ppc32g_dirtyhelper_MFSPR_526_527 ( UInt );
+
extern void ppc32g_dirtyhelper_LVS ( VexGuestPPC32State* gst,
UInt vD_idx, UInt sh,
UInt shift_right );
diff --git a/VEX/priv/guest_ppc_helpers.c b/VEX/priv/guest_ppc_helpers.c
index 11aa428..b49ea3f 100644
--- a/VEX/priv/guest_ppc_helpers.c
+++ b/VEX/priv/guest_ppc_helpers.c
@@ -119,6 +119,24 @@ UInt ppc32g_dirtyhelper_MFSPR_287 ( void )
# endif
}
+/* CALLED FROM GENERATED CODE */
+/* DIRTY HELPER (non-referentially transparent) */
+UInt ppc32g_dirtyhelper_MFSPR_526_527 ( UInt r527 )
+{
+# if defined(__powerpc__) || defined(_AIX)
+ UInt spr;
+ if (r527) {
+ __asm__ __volatile__("mfspr %0,527" : "=b"(spr));
+ } else {
+ __asm__ __volatile__("mfspr %0,526" : "=b"(spr));
+ }
+ return spr;
+# else
+ return 0;
+# endif
+}
+
+
/* CALLED FROM GENERATED CODE */
/* DIRTY HELPER (reads guest state, writes guest mem) */
diff --git a/VEX/priv/guest_ppc_toIR.c b/VEX/priv/guest_ppc_toIR.c
index f8d220d..37c8974 100644
--- a/VEX/priv/guest_ppc_toIR.c
+++ b/VEX/priv/guest_ppc_toIR.c
@@ -5657,6 +5657,28 @@ static Bool dis_proc_ctl ( VexAbiInfo* vbi, UInt theInstr )
break;
}
+
+ case 526 /* 0x20E */:
+ case 527 /* 0x20F */: {
+ UInt arg = SPR==526 ? 0 : 1;
+ IRTemp val = newTemp(Ity_I32);
+ IRExpr** args = mkIRExprVec_1( mkU32(arg) );
+ IRDirty* d = unsafeIRDirty_1_N(
+ val,
+ 0/*regparms*/,
+ "ppc32g_dirtyhelper_MFSPR_526_527",
+ fnptr_to_fnentry
+ (vbi, &ppc32g_dirtyhelper_MFSPR_526_527),
+ args
+ );
+ /* execute the dirty call, dumping the result in val. */
+ stmt( IRStmt_Dirty(d) );
+ putIReg( rD_addr,
+ mkWidenFrom32(ty, mkexpr(val), False/*unsigned*/) );
+ DIP("mfspr r%u,%u", rD_addr, (UInt)SPR);
+ break;
+ }
+
default:
vex_printf("dis_proc_ctl(ppc)(mfspr,SPR)(0x%x)\n", SPR);
return False;
--
1.7.0.4
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