PPE42 PK lib locaton changes

Change-Id: I292a3e823073233eafb95f549cd4ccb1e7c9294a
RTC: 157965
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/27653
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Reviewed-by: YUE DU <daviddu@us.ibm.com>
Reviewed-by: Gregory S. Still <stillgs@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/28292
Reviewed-by: Sachin Gupta <sgupta2m@in.ibm.com>

4 files changed, 344 insertions, 7 deletions

diff --git a/import/chips/p9/procedures/ppe/pk/ppe42/eabi.c b/import/chips/p9/procedures/ppe/pk/ppe42/eabi.c
new file mode 100644
index 00000000..140cc2be
--- /dev/null
+++ b/import/chips/p9/procedures/ppe/pk/ppe42/eabi.c
@@ -0,0 +1,46 @@
+/* IBM_PROLOG_BEGIN_TAG                                                   */
+/* This is an automatically generated prolog.                             */
+/*                                                                        */
+/* $Source: import/chips/p9/procedures/ppe/pk/ppe42/eabi.c $              */
+/*                                                                        */
+/* OpenPOWER sbe Project                                                  */
+/*                                                                        */
+/* Contributors Listed Below - COPYRIGHT 2016                             */
+/* [+] International Business Machines Corp.                              */
+/*                                                                        */
+/*                                                                        */
+/* Licensed under the Apache License, Version 2.0 (the "License");        */
+/* you may not use this file except in compliance with the License.       */
+/* You may obtain a copy of the License at                                */
+/*                                                                        */
+/*     http://www.apache.org/licenses/LICENSE-2.0                         */
+/*                                                                        */
+/* Unless required by applicable law or agreed to in writing, software    */
+/* distributed under the License is distributed on an "AS IS" BASIS,      */
+/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or        */
+/* implied. See the License for the specific language governing           */
+/* permissions and limitations under the License.                         */
+/*                                                                        */
+/* IBM_PROLOG_END_TAG                                                     */
+// assuming link script instructs the c++ compiler to put
+// ctor_start_address and ctor_end_address in .rodata
+
+//extern void (*ctor_start_address)() __attribute__ ((section (".rodata")));
+//extern void (*ctor_end_address)() __attribute__((section(".rodata")));
+#ifdef __cplusplus
+    extern "C"
+#endif
+__attribute__((weak)) void __eabi()
+{
+    // This is the default eabi and can be overridden.
+    // eabi environment is already set up by the PK kernel
+    // Call static C++ constructors if you use C++ global/static objects
+
+    //void(**ctors)() = &ctor_start_address;
+    //while(ctors != &ctor_end_address)
+    //{
+    //    (*ctors)();
+    //    ctors++;
+    //}
+}
+
diff --git a/import/chips/p9/procedures/ppe/pk/ppe42/math.c b/import/chips/p9/procedures/ppe/pk/ppe42/math.c
new file mode 100644
index 00000000..1cddc624
--- /dev/null
+++ b/import/chips/p9/procedures/ppe/pk/ppe42/math.c
@@ -0,0 +1,206 @@
+/* IBM_PROLOG_BEGIN_TAG                                                   */
+/* This is an automatically generated prolog.                             */
+/*                                                                        */
+/* $Source: import/chips/p9/procedures/ppe/pk/ppe42/math.c $              */
+/*                                                                        */
+/* OpenPOWER sbe Project                                                  */
+/*                                                                        */
+/* Contributors Listed Below - COPYRIGHT 2016                             */
+/* [+] International Business Machines Corp.                              */
+/*                                                                        */
+/*                                                                        */
+/* Licensed under the Apache License, Version 2.0 (the "License");        */
+/* you may not use this file except in compliance with the License.       */
+/* You may obtain a copy of the License at                                */
+/*                                                                        */
+/*     http://www.apache.org/licenses/LICENSE-2.0                         */
+/*                                                                        */
+/* Unless required by applicable law or agreed to in writing, software    */
+/* distributed under the License is distributed on an "AS IS" BASIS,      */
+/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or        */
+/* implied. See the License for the specific language governing           */
+/* permissions and limitations under the License.                         */
+/*                                                                        */
+/* IBM_PROLOG_END_TAG                                                     */
+#include "ppe42math.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+unsigned long
+udivmodsi4(unsigned long num, unsigned long den, int modwanted)
+{
+    unsigned long bit = 1;
+    unsigned long res = 0;
+
+    while (den < num && bit && !(den & (1L << 31)))
+    {
+        den <<= 1;
+        bit <<= 1;
+    }
+
+    while (bit)
+    {
+        if (num >= den)
+        {
+            num -= den;
+            res |= bit;
+        }
+
+        bit >>= 1;
+        den >>= 1;
+    }
+
+    if (modwanted)
+    {
+        return num;
+    }
+
+    return res;
+}
+
+// 64 bit divide.  Note: TBD add when needed
+//unsigned long long __udivdi3(unsigned long long a, unsigned long long b)
+//{
+//    unsigned long long c = 0;
+//    return c;
+//}
+
+// 32 bit unsigned integer divide
+unsigned long __udivsi3(unsigned long a, unsigned long b)
+{
+    return udivmodsi4(a, b, 0);
+}
+
+// 32 bit modulus
+unsigned long __umodsi3(unsigned long a, unsigned long b)
+{
+    return udivmodsi4(a, b, 1);
+}
+
+// 32 bit signed divide
+int __divsi3(int _a, int _b)
+{
+    register unsigned long neg = 0;
+
+    if(_a & 0x80000000)
+    {
+        neg = !neg;
+        _a = (~_a) + 1;
+    }
+
+    if(_b & 0x80000000)
+    {
+        _b = (~_b) + 1;
+        neg = !neg;
+    }
+
+    int c = __udivsi3((unsigned long)_a, (unsigned long)_b);
+
+    if(neg)
+    {
+        c = (~c) + 1;
+    }
+
+    return c;
+}
+
+// 32 bit unsigned mutiply
+unsigned long __umulsi3(unsigned long _a, unsigned long _b)
+{
+    register unsigned long a = _a;
+    register unsigned long b = _b;
+    register unsigned long c;
+    register unsigned long d;
+    asm volatile("mullhwu %0, %1, %2" : "=r"(c) : "r"(a), "r"(b));
+    d = c;
+    c = a >> 16;
+    asm volatile("mullhwu %0, %1, %2" : "=r"(c) : "r"(c), "r"(b));
+    d += (c << 16);
+    c = b >> 16;
+    asm volatile("mullhwu %0, %1, %2" : "=r"(c) : "r"(c), "r"(a));
+    d += (c << 16);
+    return d;
+}
+
+// 32 bit signed multiply
+unsigned int __mulsi3(unsigned int _a, unsigned int _b)
+{
+    register unsigned long neg = 0;
+    register unsigned long a = _a;
+    register unsigned long b = _b;
+    register unsigned long c;
+    register unsigned long d;
+
+    if(a & 0x80000000)
+    {
+        a = (~a) + 1;
+        neg = !neg;
+    }
+
+    if(b & 0x80000000)
+    {
+        b = (~b) + 1;
+        neg = !neg;
+    }
+
+    asm volatile("mullhwu %0, %1, %2" : "=r"(c) : "r"(a), "r"(b));
+    d = c;
+    c = a >> 16;
+    asm volatile("mullhwu %0, %1, %2" : "=r"(c) : "r"(c), "r"(b));
+    d += (c << 16);
+    c = b >> 16;
+    asm volatile("mullhwu %0, %1, %2" : "=r"(c) : "r"(c), "r"(a));
+    d += (c << 16);
+
+    if(neg)
+    {
+        d = (~d) + 1;
+    }
+
+    return d;
+}
+
+// 64 bit signed multiply
+unsigned long long __muldi3(unsigned long long _a, unsigned long long _b)
+{
+    unsigned long long sum = 0;
+
+    while(_a)
+    {
+        if(_a & 1)
+        {
+            sum += _b;
+        }
+
+        _a >>= 1;
+        _b <<= 1;
+    }
+
+    return sum;
+}
+
+//float __mulsf3(float _a , float _b)
+//{
+//    // floating point math
+//    return 0.0;
+//}
+
+//float __subsf3(float _a, float _b)
+//{
+//    // floating point sub
+//    return 0.0;
+//}
+
+//unsigned long __fixsfsi (float _a)
+//{
+//    // float to int
+//    return 0;
+//}
+
+#ifdef __cplusplus
+};
+#endif
+
diff --git a/import/chips/p9/procedures/ppe/pk/ppe42/pkppe42files.mk b/import/chips/p9/procedures/ppe/pk/ppe42/pkppe42files.mk
index a489d7fd..4df5178d 100644
--- a/import/chips/p9/procedures/ppe/pk/ppe42/pkppe42files.mk
+++ b/import/chips/p9/procedures/ppe/pk/ppe42/pkppe42files.mk
@@ -50,21 +50,22 @@ PPE42-C-SOURCES = ppe42_core.c \
 		  ppe42_init.c \
 		  ppe42_irq_core.c\
 		  ppe42_gcc.c\
-                  ppe42_scom.c
-				   
+		  ppe42_scom.c\
+		  eabi.c\
+		  math.c
+
 PPE42-S-SOURCES =  ppe42_boot.S \
 		   ppe42_exceptions.S\
 		   div64.S\
 		   ppe42_timebase.S
 
-PPE42-TIMER-C-SOURCES = 
-PPE42-TIMER-S-SOURCES = 
+PPE42-TIMER-C-SOURCES =
+PPE42-TIMER-S-SOURCES =
 
 PPE42-THREAD-C-SOURCES =
 PPE42-THREAD-S-SOURCES = ppe42_thread_init.S
 
 PPE42_THREAD_OBJECTS= $(PPE42-THREAD-S-SOURCES:.S=.o)
-PPE42_OBJECTS = $(PPE42-C-SOURCES:.c=.o) $(PPE42-S-SOURCES:.S=.o)
-
-
+PPE42_OBJECTS = $(PPE42-C-SOURCES:.c=.o)
+PPE42_OBJECTS += $(PPE42-S-SOURCES:.S=.o)
 
diff --git a/import/chips/p9/procedures/ppe/pk/ppe42/ppe42math.h b/import/chips/p9/procedures/ppe/pk/ppe42/ppe42math.h
new file mode 100644
index 00000000..e4f98cdd
--- /dev/null
+++ b/import/chips/p9/procedures/ppe/pk/ppe42/ppe42math.h
@@ -0,0 +1,84 @@
+/* IBM_PROLOG_BEGIN_TAG                                                   */
+/* This is an automatically generated prolog.                             */
+/*                                                                        */
+/* $Source: import/chips/p9/procedures/ppe/pk/ppe42/ppe42math.h $         */
+/*                                                                        */
+/* OpenPOWER sbe Project                                                  */
+/*                                                                        */
+/* Contributors Listed Below - COPYRIGHT 2016                             */
+/* [+] International Business Machines Corp.                              */
+/*                                                                        */
+/*                                                                        */
+/* Licensed under the Apache License, Version 2.0 (the "License");        */
+/* you may not use this file except in compliance with the License.       */
+/* You may obtain a copy of the License at                                */
+/*                                                                        */
+/*     http://www.apache.org/licenses/LICENSE-2.0                         */
+/*                                                                        */
+/* Unless required by applicable law or agreed to in writing, software    */
+/* distributed under the License is distributed on an "AS IS" BASIS,      */
+/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or        */
+/* implied. See the License for the specific language governing           */
+/* permissions and limitations under the License.                         */
+/*                                                                        */
+/* IBM_PROLOG_END_TAG                                                     */
+#ifndef _MATH_H
+#define _MATH_H
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+// These names are emitted by the ppe42 compiler.
+// Implement the ones that will be used.
+
+// 64 bit unsigned divide. Implement if needed
+// unsigned long long __udivdi3(unsigned long long a, unsigned long long b);
+
+/** 32 bit unsigned divide
+ *  @param[in] Dividend
+ *  @param[in] Divisor
+ *  @return quotient
+ */
+unsigned long __udivsi3(unsigned long a, unsigned long b);
+
+/** 32 bit signed divide
+ * @param[in] Dividend
+ * @param[in] Divisor
+ * @return quotient
+ */
+int __divsi3(int _a, int _b);
+
+/** 32 bit unsigned modulus
+ * @param[in] Dividend
+ * @param[in] Divisor
+ * @return modulus
+ */
+unsigned long __umodsi3(unsigned long a, unsigned long b);
+
+/** 32 bit unsigned multiply
+ * @param[in] multiplier
+ * @param[in] multiplier
+ * @return product
+ */
+unsigned long __umulsi3(unsigned long _a, unsigned long _b);
+
+/** 32 bit signed multiply
+ * @param[in] multiplier
+ * @param[in] multiplier
+ * @return product
+ */
+unsigned int __mulsi3(unsigned int _a, unsigned int _b);
+
+/** 64 bit signed multiply
+ * @param[in] multiplier
+ * @param[in] multiplier
+ * @return product
+ */
+unsigned long long __muldi3(unsigned long long _a, unsigned long long _b);
+
+#ifdef __cplusplus
+};
+#endif
+
+#endif