ext: Include SystemC 2.3.1 into gem5

In the past it happened several times that some changes in gem5 broke the
SystemC coupling. Recently Accelera has changed the licence for SystemC
from their own licence to Apache2.0, which is compatible with gem5.
However, SystemC usually relies on the Boost library, but I was able to
exchange the boost calls by c++11 alternatives. The recent SystemC version
is placed into /ext and is integrated into gem5's build system. The goal is
to integrate some SystemC tests for the CI in some following patches.

Change-Id: I4b66ec806b5e3cffc1d7c85d3735ff4fa5b31fd0
Reviewed-on: https://gem5-review.googlesource.com/2240
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>

1 files changed, 196 insertions, 0 deletions

diff --git a/ext/systemc/src/sysc/qt/md/hppa.h b/ext/systemc/src/sysc/qt/md/hppa.h
new file mode 100644
index 000000000..fdb9cef93
--- /dev/null
+++ b/ext/systemc/src/sysc/qt/md/hppa.h
@@ -0,0 +1,196 @@
+/*
+ * QuickThreads -- Threads-building toolkit.
+ * Copyright (c) 1993 by David Keppel
+ *
+ * Permission to use, copy, modify and distribute this software and
+ * its documentation for any purpose and without fee is hereby
+ * granted, provided that the above copyright notice and this notice
+ * appear in all copies.  This software is provided as a
+ * proof-of-concept and for demonstration purposes; there is no
+ * representation about the suitability of this software for any
+ * purpose.
+ */
+
+/*
+ * This file (pa-risc.h) is part of the port of QuickThreads for the
+ * PA-RISC 1.1 architecture.  This file is a machine dependent header
+ * file.  It was written in 1994 by Uwe Reder
+ * (`uereder@cip.informatik.uni-erlangen.de') for the Operating Systems
+ * Department (IMMD4) at the University of Erlangen/Nuernberg Germany.
+ */
+
+
+#ifndef QUICKTHREADS_PA_RISC_H
+#define QUICKTHREADS_PA_RISC_H
+
+#if 0
+#include <qt.h>
+#endif
+
+/* size of an integer-register (32 bit) */
+typedef unsigned long qt_word_t;
+
+/* PA-RISC's stack grows up */
+#define QUICKTHREADS_GROW_UP
+
+/* Stack layout on PA-RISC according to PA-RISC Procedure Calling Conventions:
+
+    Callee-save registers are: gr3-gr18, fr12-fr21.
+    Also save gr2, return pointer.
+
+    +---
+    | fr12          Each floating register is a double word (8 bytes).
+    | fr13          Floating registers are only saved if `qt_block' is
+    | fr14          called, in which case it saves the floating-point
+    | fr15          registers then calls `qt_blocki' to save the integer
+    | fr16	    registers.
+    | fr17
+    | fr18
+    | fr19
+    | fr20
+    | fr21
+    | <arg word 3>  fixed arguments (must be allocated; may remain unused)
+    | <arg word 2>
+    | <arg word 1>
+    | <arg word 0>
+    | <LPT>         frame marker
+    | <LPT'>
+    | <RP'>
+    | <Current RP>
+    | <Static Link>
+    | <Clean Up>
+    | <RP''>
+    | <Previous SP>
+    +---
+    | gr3           word each (4 bytes)
+    | gr4
+    | gr5
+    | gr6
+    | gr7
+    | gr8
+    | gr9
+    | gr10
+    | gr11
+    | gr12
+    | gr13
+    | gr14
+    | gr15
+    | gr16
+    | gr17
+    | gr18
+    | <16 bytes filled in (sp has to be 64-bytes aligned)>
+    | <arg word 3>  fixed arguments (must be allocated; may remain unused)
+    | <arg word 2>
+    | <arg word 1>
+    | <arg word 0>
+    | <LPT>         frame marker
+    | <LPT'>
+    | <RP'>
+    | <Current RP>
+    | <Static Link>
+    | <Clean Up>
+    | <RP''>
+    | <Previous SP>
+    +---            <--- sp
+*/
+
+/* When a never-before-run thread is restored, the return pc points
+   to a fragment of code that starts the thread running.  For
+   non-vargs functions, it just calls the client's `only' function.
+   For varargs functions, it calls the startup, user, and cleanup
+   functions. */
+
+/* Note: Procedue Labels on PA-RISC
+
+   <--2--><-------28---------><1-><1->
+   -----------------------------------
+   | SID |    Adress Part    | L | X |
+   -----------------------------------
+
+   On HP-UX the L field is used to flag wheather the procedure
+   label (plabel) is a pointer to an LT entry or to the entry point
+   of the procedure (PA-RISC Procedure Calling Conventions Reference
+   Manual, 5.3.2 Procedure Labels and Dynamic Calls). */
+
+#define QUICKTHREADS_PA_RISC_READ_PLABEL(plabel) \
+    ( (((int)plabel) & 2) ? \
+        ( (*((int *)(((int)plabel) & 0xfffffffc)))) : ((int)plabel) )
+
+/* Stack must be 64 bytes aligned. */
+#define QUICKTHREADS_STKALIGN (64)
+
+/* Internal helper for putting stuff on stack (negative index!). */
+#define QUICKTHREADS_SPUT(top, at, val)   \
+    (((qt_word_t *)(top))[-(at)] = (qt_word_t)(val))
+
+/* Offsets of various registers which are modified on the stack.
+   rp (return-pointer) has to be stored in the frame-marker-area
+   of the "older" stack-segment. */
+
+#define QUICKTHREADS_crp  (12+4+16+5)
+#define QUICKTHREADS_15   (12+4+4)
+#define QUICKTHREADS_16   (12+4+3)
+#define QUICKTHREADS_17   (12+4+2)
+#define QUICKTHREADS_18   (12+4+1)
+
+
+/** This stuff is for NON-VARARGS. **/
+
+/* Stack looks like this (2 stack frames):
+
+    <--- 64-bytes aligned --><------- 64-bytes aligned ------------>
+   |                        ||                                      |
+    <--16--><------48-------><----16*4-----><--16-><------48------->
+   ||      |                ||             |      |                ||
+   ||filler|arg|frame-marker||register-save|filler|arg|frame-marker||
+   ------------------------------------------------------------------
+ */
+
+#define QUICKTHREADS_STKBASE  (16+48+(16*sizeof(qt_word_t))+16+48)
+
+/* The index, relative to sp, of where to put each value. */
+#define QUICKTHREADS_ONLY_INDEX   (QUICKTHREADS_15)
+#define QUICKTHREADS_USER_INDEX   (QUICKTHREADS_16)
+#define QUICKTHREADS_ARGT_INDEX   (QUICKTHREADS_17)
+#define QUICKTHREADS_ARGU_INDEX   (QUICKTHREADS_18)
+
+extern void qt_start(void);
+#define QUICKTHREADS_ARGS_MD(sp)  \
+    (QUICKTHREADS_SPUT (sp, QUICKTHREADS_crp, QUICKTHREADS_PA_RISC_READ_PLABEL(qt_start)))
+
+
+/** This is for VARARGS. **/
+
+#define QUICKTHREADS_VARGS_DEFAULT
+
+/* Stack looks like this (2 stack frames):
+
+    <------ 64-bytes aligned -------><--------- 64-bytes aligned ---------->
+   |                                ||                                      |
+    <---?--><--?---><16><----32-----><----16*4-----><-16--><16><----32----->
+   ||      |       |   |            ||             |      |   |            ||
+   ||filler|varargs|arg|frame-marker||register-save|filler|arg|frame-marker||
+   --------------------------------------------------------------------------
+ */
+
+/* Sp is moved to the end of the first stack frame. */
+#define QUICKTHREADS_VARGS_MD0(sp, vasize) \
+    ((qt_t *)(((char *)sp) + QUICKTHREADS_STKROUNDUP(vasize + 4*4 + 32)))
+
+/* To reach the arguments from the end of the first stack frame use 32
+   as a negative adjustment. */
+#define QUICKTHREADS_VARGS_ADJUST(sp)	((qt_t *)(((char *)sp) - 32))
+
+/* Offset to reach the end of the second stack frame. */
+#define QUICKTHREADS_VSTKBASE	((16*sizeof(qt_word_t)) + 16 + 4*4 + 32)
+
+extern void qt_vstart(void);
+#define QUICKTHREADS_VARGS_MD1(sp) \
+    (QUICKTHREADS_SPUT (sp, QUICKTHREADS_crp, QUICKTHREADS_PA_RISC_READ_PLABEL(qt_vstart)))
+
+#define QUICKTHREADS_VARGT_INDEX      (QUICKTHREADS_15)
+#define QUICKTHREADS_VSTARTUP_INDEX   (QUICKTHREADS_16)
+#define QUICKTHREADS_VUSERF_INDEX     (QUICKTHREADS_17)
+#define QUICKTHREADS_VCLEANUP_INDEX   (QUICKTHREADS_18)
+
+#endif /* ndef QUICKTHREADS_PA_RISC_H */