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/kbdtest/kbdtest.c

/upcalls/upcall-basic.c

upcalls/upcall-basic.c Property changes : Added: svn:eol-style ## -0,0 +1 ## +native \ No newline at end of property Added: svn:keywords ## -0,0 +1 ## +Id \ No newline at end of property Index: upcalls/Makefile.in =================================================================== --- upcalls/Makefile.in (nonexistent) +++ upcalls/Makefile.in (revision 93) @@ -0,0 +1,523 @@ +# Makefile.in generated by automake 1.11.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, +# Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +# Makefile.am for or1ksim OR1K test program: upcalls + +# Copyright (C) Embecosm Limited, 2010 + +# Contributor Jeremy Bennett + +# This file is part of OpenRISC 1000 Architectural Simulator. + +# 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 3 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. 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\ + installcheck-am installdirs maintainer-clean \ + maintainer-clean-generic mostlyclean mostlyclean-compile \ + mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \ + tags uninstall uninstall-am + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: Index: upcalls/Makefile.am =================================================================== --- upcalls/Makefile.am (nonexistent) +++ upcalls/Makefile.am (revision 93) @@ -0,0 +1,45 @@ +# Makefile.am for or1ksim OR1K test program: upcalls + +# Copyright (C) Embecosm Limited, 2010 + +# Contributor Jeremy Bennett + +# This file is part of OpenRISC 1000 Architectural Simulator. + +# 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 3 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 . */ + +# ----------------------------------------------------------------------------- +# This code is commented throughout for use with Doxygen. +# ----------------------------------------------------------------------------- + + +# Test programs for upcalls +check_PROGRAMS = upcall-basic \ + upcall-misaligned + +# Basic test +upcall_basic_SOURCES = upcall-basic.c + +upcall_basic_LDFLAGS = -T$(srcdir)/../default.ld + +upcall_basic_LDADD = ../except/except.lo \ + ../support/libsupport.la + +# Test for misaligned calls +upcall_misaligned_SOURCES = upcall-misaligned.c + +upcall_misaligned_LDFLAGS = -T$(srcdir)/../default.ld + +upcall_misaligned_LDADD = ../except/except.lo \ + ../support/libsupport.la

upcalls/Makefile.am Property changes : Added: svn:eol-style ## -0,0 +1 ## +native \ No newline at end of property Added: svn:keywords ## -0,0 +1 ## +Id \ No newline at end of property Index: upcalls/upcall-misaligned.c =================================================================== --- upcalls/upcall-misaligned.c (nonexistent) +++ upcalls/upcall-misaligned.c (revision 93) @@ -0,0 +1,290 @@ +/* upcall-misaligned.c. Test of Or1ksim misaligned handling of upcalls + + Copyright (C) 2010 Embecosm Limited + + Contributors various OpenCores participants + Contributor Jeremy Bennett + + This file is part of OpenRISC 1000 Architectural Simulator. + + 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 3 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 . */ + +/* ---------------------------------------------------------------------------- + This code is commented throughout for use with Doxygen. + --------------------------------------------------------------------------*/ + +#include "support.h" +#include "spr-defs.h" +#include "board.h" + + +/*!Alignment exception handler defined here. */ +unsigned long excpt_align; + +/*!Flag set if we get a misaligned access */ +static int misaligned_p; + +/* --------------------------------------------------------------------------*/ +/*!Write a memory mapped byte register + + Report the result, noting if we get a misalignment exception. + + @param[in] addr Memory mapped address + @param[in] value Value to set */ +/* --------------------------------------------------------------------------*/ +static void +setreg8 (unsigned long int addr, + unsigned char value) +{ + *((volatile unsigned char *) addr) = value; + + if (misaligned_p) + { + printf ("Writing byte at 0x%08lx: misalignment exception.\n", addr); + misaligned_p = 0; + } + else + { + printf ("Wrote byte at 0x%08lx = 0x%02x.\n", addr, value); + } +} /* setreg8 () */ + + +/* --------------------------------------------------------------------------*/ +/*!Write a memory mapped half word register + + Report the result, noting if we get a misalignment exception. + + @param[in] addr Memory mapped address + @param[in] value Value to set */ +/* --------------------------------------------------------------------------*/ +static void +setreg16 (unsigned long int addr, + unsigned short int value) +{ + *((volatile unsigned short int *) addr) = value; + + if (misaligned_p) + { + printf ("Writing half word at 0x%08lx: misalignment exception.\n", addr); + misaligned_p = 0; + } + else + { + printf ("Wrote half word at 0x%08lx = 0x%04x.\n", addr, value); + } +} /* setreg16 () */ + + +/* --------------------------------------------------------------------------*/ +/*!Write a memory mapped full word register + + Report the result, noting if we get a misalignment exception. + + @param[in] addr Memory mapped address + @param[in] value Value to set */ +/* --------------------------------------------------------------------------*/ +static void +setreg32 (unsigned long int addr, + unsigned long int value) +{ + *((volatile unsigned long int *) addr) = value; + + if (misaligned_p) + { + printf ("Writing full word at 0x%08lx: misalignment exception.\n", addr); + misaligned_p = 0; + } + else + { + printf ("Wrote full word at 0x%08lx = 0x%08lx.\n", addr, value); + } +} /* setreg32 () */ + + +/* --------------------------------------------------------------------------*/ +/*!Read a memory mapped byte register + + Report the result, noting if we get a misalignment exception. + + @param[in] addr Memory mapped address + + @return Value read */ +/* --------------------------------------------------------------------------*/ +unsigned char +getreg8 (unsigned long int addr) +{ + unsigned char res = *((volatile unsigned char *) addr); + + if (misaligned_p) + { + printf ("Reading byte at 0x%08lx: misalignment exception.\n", addr); + misaligned_p = 0; + } + else + { + printf ("Read byte at 0x%08lx = 0x%02x.\n", addr, res); + } + + return res; + +} /* getreg8 () */ + + +/* --------------------------------------------------------------------------*/ +/*!Read a memory mapped half word register + + Report the result, noting if we get a misalignment exception. + + @param[in] addr Memory mapped address + + @return Value read */ +/* --------------------------------------------------------------------------*/ +unsigned short int +getreg16 (unsigned long int addr) +{ + unsigned short int res = *((volatile unsigned short int *) addr); + + if (misaligned_p) + { + printf ("Reading half word at 0x%08lx: misalignment exception.\n", addr); + misaligned_p = 0; + } + else + { + printf ("Read half word at 0x%08lx = 0x%04x.\n", addr, res); + } + + return res; + +} /* getreg16 () */ + + +/* --------------------------------------------------------------------------*/ +/*!Read a memory mapped full word register + + Report the result, noting if we get a misalignment exception. + + @param[in] addr Memory mapped address + + @return Value read */ +/* --------------------------------------------------------------------------*/ +unsigned long int +getreg32 (unsigned long int addr) +{ + unsigned long int res = *((volatile unsigned long int *) addr); + + if (misaligned_p) + { + printf ("Reading full word at 0x%08lx: misalignment exception.\n", addr); + misaligned_p = 0; + } + else + { + printf ("Read full word at 0x%08lx = 0x%08lx.\n", addr, res); + } + + return res; + +} /* getreg32 () */ + + +/* --------------------------------------------------------------------------*/ +/*!Exception handler for misalignment. + + Set the flag to indicated we have hit an exception. + + We can't just return, since that will give us the instruction that caused + the problem in the first place. What we do instead is patch the EPCR SPR. + + This is fine, so long as we didn't trap in a delay slot. The crude response + to that then we just exit. */ +/* --------------------------------------------------------------------------*/ +void align_handler (void) +{ + misaligned_p = 1; + + unsigned long int iaddr = mfspr (SPR_EPCR_BASE); + unsigned long int instr = *(unsigned long int *) iaddr; + unsigned char opc = instr >> 26; + + switch (opc) + { + case 0x00: /* l.j */ + case 0x01: /* l.jal */ + case 0x03: /* l.bnf */ + case 0x04: /* l.bf */ + case 0x11: /* l.jr */ + case 0x12: /* l.jalr */ + + printf ("Misalignment exception unable to recover from delay slot.\n"); + exit (1); + break; + + default: + mtspr (SPR_EPCR_BASE, iaddr + 4); /* Step past */ + break; + } +} /* align_handler () */ + + +/* --------------------------------------------------------------------------*/ +/*!Main program to read and write memory mapped registers + + Some of these are misaligned and should cause the appropriate exception. + + @return The return code from the program (always zero). */ +/* --------------------------------------------------------------------------*/ +int +main () +{ + /* Set the exception handler, and note that no exceptions have yet + happened. */ + printf ("Setting alignment exception handler.\n"); + excpt_align = (unsigned long)align_handler; + misaligned_p = 0; + + /* Write some registers */ + printf ("Writing registers.\n"); + + setreg8 (GENERIC_BASE, 0xde); + + setreg16 (GENERIC_BASE + 2, 0xdead); /* Aligned */ + setreg16 (GENERIC_BASE + 5, 0xbeef); /* Unaligned */ + + setreg32 (GENERIC_BASE + 8, 0xdeadbeef); /* Aligned */ + setreg32 (GENERIC_BASE + 13, 0xcafebabe); /* Unaligned */ + setreg32 (GENERIC_BASE + 18, 0xbaadf00d); /* Unaligned */ + setreg32 (GENERIC_BASE + 23, 0xfee1babe); /* Unaligned */ + setreg32 (GENERIC_BASE + 28, 0xbaadbabe); /* Aligned */ + + /* Write some registers */ + printf ("Reading registers.\n"); + + (void)getreg8 (GENERIC_BASE); + + (void)getreg16 (GENERIC_BASE + 2); /* Aligned */ + (void)getreg16 (GENERIC_BASE + 5); /* Unaligned */ + + (void)getreg32 (GENERIC_BASE + 8); /* Aligned */ + (void)getreg32 (GENERIC_BASE + 13); /* Unaligned */ + (void)getreg32 (GENERIC_BASE + 18); /* Unaligned */ + (void)getreg32 (GENERIC_BASE + 23); /* Unaligned */ + (void)getreg32 (GENERIC_BASE + 28); /* Aligned */ + + /* We don't actually ever return */ + report (0xdeaddead); + return 0; + +} /* main () */

upcalls/upcall-misaligned.c Property changes : Added: svn:eol-style ## -0,0 +1 ## +native \ No newline at end of property Added: svn:keywords ## -0,0 +1 ## +Id \ No newline at end of property Index: configure.ac =================================================================== --- configure.ac (revision 90) +++ configure.ac (revision 93) @@ -132,6 +132,7 @@ functest/Makefile \ flag/Makefile \ int-test/Makefile \ + int-logger/Makefile \ inst-set-test/Makefile \ kbdtest/Makefile \ local-global/Makefile \ @@ -147,6 +148,7 @@ mycompress/Makefile \ support/Makefile \ tick/Makefile \ - uos/Makefile]) + uos/Makefile \ + upcalls/Makefile]) AC_OUTPUT

/int-logger/Makefile.in

/int-logger/Makefile.am

int-logger/Makefile.am Property changes : Added: svn:eol-style ## -0,0 +1 ## +native \ No newline at end of property Added: svn:keywords ## -0,0 +1 ## +Id \ No newline at end of property Index: int-logger/int-logger-edge.c =================================================================== --- int-logger/int-logger-edge.c (nonexistent) +++ int-logger/int-logger-edge.c (revision 93) @@ -0,0 +1,132 @@ +/* int-logger-edge.c. Test of Or1ksim handling of edge triggered interrupts + + Copyright (C) 2010 Embecosm Limited + + Contributors various OpenCores participants + Contributor Jeremy Bennett + + This file is part of OpenRISC 1000 Architectural Simulator. + + 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 3 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 . */ + +/* ---------------------------------------------------------------------------- + This code is commented throughout for use with Doxygen. + --------------------------------------------------------------------------*/ + +#include "support.h" +#include "spr-defs.h" +#include "board.h" + + +/* --------------------------------------------------------------------------*/ +/*!Write a memory mapped register + + @param[in] addr Memory mapped address + @param[in] value Value to set */ +/* --------------------------------------------------------------------------*/ +static void +setreg (unsigned long addr, + unsigned char value) +{ + *((volatile unsigned char *) addr) = value; + +} /* setreg () */ + + +/* --------------------------------------------------------------------------*/ +/*!Read a memory mapped register + + @param[in] addr Memory mapped address + + @return Value read */ +/* --------------------------------------------------------------------------*/ +unsigned long +getreg (unsigned long addr) +{ + return *((volatile unsigned char *) addr); + +} /* getreg () */ + + +/* --------------------------------------------------------------------------*/ +/*!Generic interrupt handler + + This should receive the interrupt exception. Report the value in PICSR, + then clear the interrupt and reporting it again */ +/* --------------------------------------------------------------------------*/ +static void +interrupt_handler () +{ + unsigned long int old_picsr = mfspr (SPR_PICSR); + mtspr (SPR_PICSR, 0); + unsigned long int new_picsr = mfspr (SPR_PICSR); + + printf ("PICSR 0x%08lx -> 0x%08lx\n", old_picsr, new_picsr); + +} /* interrupt_handler () */ + + +/* --------------------------------------------------------------------------*/ +/*!Main program to set up interrupt handler + + We make a series of upcalls, after 500 us and then every 1000us, which + prompt some interrupts. By doing this, our upcalls should always be well + clear of any calling function interrupt generation, which is on millisecond + boundaries. + + @return The return code from the program (always zero). */ +/* --------------------------------------------------------------------------*/ +int +main () +{ + printf ("Starting interrupt handler\n"); + excpt_int = (unsigned long)interrupt_handler; + + /* Enable interrupts */ + printf ("Enabling interrupts.\n"); + mtspr (SPR_SR, mfspr(SPR_SR) | SPR_SR_IEE); + mtspr (SPR_PICMR, 0xffffffff); + + /* Loop forever, upcalling at the desired intervals. */ + unsigned long int start = read_timer (); + + while (1) + { + static int do_read_p = 1; + static long int end_time = 500; + + while ((read_timer () - start) < end_time) + { + } + + /* Do our memory mapped upcall, alternating reads and writes. */ + if (do_read_p) + { + (void)getreg (GENERIC_BASE); + do_read_p = 0; + } + else + { + setreg (GENERIC_BASE, 0); + do_read_p = 1; + } + + /* Wait 1000us before next upcall. */ + end_time += 1000; + } + + /* We don't actually ever return */ + return 0; + +} /* main () */

int-logger/int-logger-edge.c Property changes : Added: svn:eol-style ## -0,0 +1 ## +native \ No newline at end of property Added: svn:keywords ## -0,0 +1 ## +Id \ No newline at end of property Index: int-logger/int-logger-level.c =================================================================== --- int-logger/int-logger-level.c (nonexistent) +++ int-logger/int-logger-level.c (revision 93) @@ -0,0 +1,116 @@ +/* int-logger-level.c. Test of Or1ksim handling of level triggered interrupts + + Copyright (C) 2010 Embecosm Limited + + Contributors various OpenCores participants + Contributor Jeremy Bennett + + This file is part of OpenRISC 1000 Architectural Simulator. + + 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 3 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 . */ + +/* ---------------------------------------------------------------------------- + This code is commented throughout for use with Doxygen. + --------------------------------------------------------------------------*/ + +#include "support.h" +#include "spr-defs.h" +#include "board.h" + + +/* --------------------------------------------------------------------------*/ +/*!Write a memory mapped register + + @param[in] addr Memory mapped address + @param[in] value Value to set */ +/* --------------------------------------------------------------------------*/ +static void +setreg (unsigned long addr, + unsigned char value) +{ + *((volatile unsigned char *) addr) = value; + +} /* setreg () */ + + +/* --------------------------------------------------------------------------*/ +/*!Read a memory mapped register + + @param[in] addr Memory mapped address + + @return Value read */ +/* --------------------------------------------------------------------------*/ +unsigned long +getreg (unsigned long addr) +{ + return *((volatile unsigned char *) addr); + +} /* getreg () */ + + +/* --------------------------------------------------------------------------*/ +/*!Generic interrupt handler + + This should receive the interrupt exception. Report the value in + PICSR. Clearing will be done externally. */ +/* --------------------------------------------------------------------------*/ +static void +interrupt_handler () +{ + unsigned long int picsr = mfspr (SPR_PICSR); + + /* Report the interrupt */ + printf ("PICSR = 0x%08lx\n", picsr); + + /* Request the interrupt be cleared with a write upcall. */ + setreg (GENERIC_BASE, 0); + +} /* interrupt_handler () */ + + +/* --------------------------------------------------------------------------*/ +/*!Main program to set up interrupt handler + + @return The return code from the program (always zero). */ +/* --------------------------------------------------------------------------*/ +int +main () +{ + printf ("Starting interrupt handler\n"); + excpt_int = (unsigned long)interrupt_handler; + + /* Enable interrupts */ + printf ("Enabling interrupts.\n"); + mtspr (SPR_SR, mfspr(SPR_SR) | SPR_SR_IEE); + mtspr (SPR_PICMR, 0xffffffff); + + /* Loop forever, upcalling reads every 500us to generate interrupts. */ + unsigned long int start = read_timer (); + + while (1) + { + static long int end_time = 500; + + while ((read_timer () - start) < end_time) + { + } + + /* Do our memory mapped upcall read to generate an interrupt. */ + (void)getreg (GENERIC_BASE); + } + + /* We don't actually ever return */ + return 0; + +} /* main () */

int-logger/int-logger-level.c Property changes : Added: svn:eol-style ## -0,0 +1 ## +native \ No newline at end of property Added: svn:keywords ## -0,0 +1 ## +Id \ No newline at end of property Index: ChangeLog =================================================================== --- ChangeLog (revision 90) +++ ChangeLog (revision 93) @@ -1,3 +1,28 @@ +2010-04-28 Jeremy Bennett + * int-logger/int-logger-edge.c: Created. + * int-logger/Makefile.am: Added int-logger-edge. + * int-logger/Makefile.in: Regenerated. + * upcalls/upcall-basic.c: Created. + * upcalls/upcall-misaligned.c: Created. + * upcalls/Makefile.am: Created. + * upcalls/Makefile.in: Regenerated. + +2010-04-25 Jeremy Bennett + * kbdtest/kbdtest.c (print_escaped_char): Added function to print + chars more clearly. + +2010-04-23 Jeremy Bennett + * configure.ac: Added new interrupt test make files. + * configure: Regenerated. + * int-logger/int-logger-level.c: Created. + * int-logger/Makefile.am: Created. + * int-logger/Makefile.in: Regenerated. + +2010-04-22 Jeremy Bennett + * support/support.c (print_base, printf_unsigned_base): Value and + base made unsigned. + (print_decimal): cast value to unsigned for call to print_base. + 2010-04-21 Jeremy Bennett * AUTHORS: Moved from parent directory * configure: Regenerated. Index: int-test/int-test.S =================================================================== --- int-test/int-test.S (revision 90) +++ int-test/int-test.S (revision 93) @@ -1,4 +1,4 @@ -/* int-test.S. Test of Or1ksim interrupt controller +/* int-test.S. Test of Or1ksim interrupt handling Copyright (C) 1999-2006 OpenCores Copyright (C) 2010 Embecosm Limited @@ -25,7 +25,9 @@ This code is commented throughout for use with Doxygen. --------------------------------------------------------------------------*/ -/* Within the test we'll use following global variables: +/* NOTE. This is not a test of the Programmable Interrupt Controller. + + Within the test we'll use following global variables: r16 interrupt counter r17 current tick timer comparison counter @@ -38,10 +40,11 @@ r25-r31 used by int handler The test do the following: - We set up the tick timer to trigger once and then we trigger interrupts incrementally - on every cycle in the specified test program; on interrupt handler we check if data computed - so far exactly matches precalculated values. If interrupt has returned incorreclty, we can - detect this using assertion routine at the end. + We set up the tick timer to trigger once and then we trigger interrupts + incrementally on every cycle in the specified test program; on interrupt + handler we check if data computed so far exactly matches precalculated + values. If interrupt has returned incorreclty, we can detect this using + assertion routine at the end. */ #include "spr-defs.h"

/Makefile.am

/support/board.h

/support/support.c