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authorYang Zhang <yang.z.zhang@intel.com>2015-08-28 09:58:54 +0800
committerYang Zhang <yang.z.zhang@intel.com>2015-09-01 12:44:00 +0800
commite44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch)
tree66b09f592c55df2878107a468a91d21506104d3f /qemu/linux-user/arm/nwfpe/fpa11.h
parent9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff)
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5 Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/linux-user/arm/nwfpe/fpa11.h')
-rw-r--r--qemu/linux-user/arm/nwfpe/fpa11.h130
1 files changed, 130 insertions, 0 deletions
diff --git a/qemu/linux-user/arm/nwfpe/fpa11.h b/qemu/linux-user/arm/nwfpe/fpa11.h
new file mode 100644
index 000000000..bb9ac6554
--- /dev/null
+++ b/qemu/linux-user/arm/nwfpe/fpa11.h
@@ -0,0 +1,130 @@
+/*
+ NetWinder Floating Point Emulator
+ (c) Rebel.com, 1998-1999
+
+ Direct questions, comments to Scott Bambrough <scottb@netwinder.org>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef __FPA11_H__
+#define __FPA11_H__
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+
+#include <cpu.h>
+
+#define GET_FPA11() (qemufpa)
+
+/*
+ * The processes registers are always at the very top of the 8K
+ * stack+task struct. Use the same method as 'current' uses to
+ * reach them.
+ */
+extern CPUARMState *user_registers;
+
+#define GET_USERREG() (user_registers)
+
+/* Need task_struct */
+//#include <linux/sched.h>
+
+/* includes */
+#include "fpsr.h" /* FP control and status register definitions */
+#include "fpu/softfloat.h"
+
+#define typeNone 0x00
+#define typeSingle 0x01
+#define typeDouble 0x02
+#define typeExtended 0x03
+
+/*
+ * This must be no more and no less than 12 bytes.
+ */
+typedef union tagFPREG {
+ floatx80 fExtended;
+ float64 fDouble;
+ float32 fSingle;
+} FPREG;
+
+/*
+ * FPA11 device model.
+ *
+ * This structure is exported to user space. Do not re-order.
+ * Only add new stuff to the end, and do not change the size of
+ * any element. Elements of this structure are used by user
+ * space, and must match struct user_fp in include/asm-arm/user.h.
+ * We include the byte offsets below for documentation purposes.
+ *
+ * The size of this structure and FPREG are checked by fpmodule.c
+ * on initialisation. If the rules have been broken, NWFPE will
+ * not initialise.
+ */
+typedef struct tagFPA11 {
+/* 0 */ FPREG fpreg[8]; /* 8 floating point registers */
+/* 96 */ FPSR fpsr; /* floating point status register */
+/* 100 */ FPCR fpcr; /* floating point control register */
+/* 104 */ unsigned char fType[8]; /* type of floating point value held in
+ floating point registers. One of none
+ single, double or extended. */
+/* 112 */ int initflag; /* this is special. The kernel guarantees
+ to set it to 0 when a thread is launched,
+ so we can use it to detect whether this
+ instance of the emulator needs to be
+ initialised. */
+ float_status fp_status; /* QEMU float emulator status */
+} FPA11;
+
+extern FPA11* qemufpa;
+
+void resetFPA11(void);
+void SetRoundingMode(const unsigned int);
+void SetRoundingPrecision(const unsigned int);
+
+static inline unsigned int readRegister(unsigned int reg)
+{
+ return (user_registers->regs[(reg)]);
+}
+
+static inline void writeRegister(unsigned int x, unsigned int y)
+{
+#if 0
+ printf("writing %d to r%d\n",y,x);
+#endif
+ user_registers->regs[(x)]=(y);
+}
+
+static inline void writeConditionCodes(unsigned int x)
+{
+ cpsr_write(user_registers,x,CPSR_NZCV);
+}
+
+#define ARM_REG_PC 15
+
+unsigned int EmulateAll(unsigned int opcode, FPA11* qfpa, CPUARMState* qregs);
+
+unsigned int EmulateCPDO(const unsigned int);
+unsigned int EmulateCPDT(const unsigned int);
+unsigned int EmulateCPRT(const unsigned int);
+
+unsigned int SingleCPDO(const unsigned int opcode);
+unsigned int DoubleCPDO(const unsigned int opcode);
+unsigned int ExtendedCPDO(const unsigned int opcode);
+
+
+/* included only for get_user/put_user macros */
+#include "qemu.h"
+
+#endif