From b4d0d18eeda3ee81816c33140de46bb6bc724d43 Mon Sep 17 00:00:00 2001 From: Joel Sherrill Date: Wed, 13 Dec 2000 17:52:53 +0000 Subject: 2000-12-13 Joel Sherrill * shared/.cvsignore, shared/Makefile.am, shared/cache/.cvsignore, shared/cache/Makefile.am, shared/cache/cache.c, shared/cache/cache_.h, shared/interrupts/.cvsignore, shared/interrupts/Makefile.am, shared/interrupts/installisrentries.c, shared/interrupts/isr_entries.S, shared/interrupts/maxvectors.c, tx39/.cvsignore, tx39/Makefile.am, tx39/include/.cvsignore, tx39/include/Makefile.am, tx39/include/tx3904.h: New file. Moved some pieces of interrupt processing from score/cpu to libcpu/mips since many interrupt servicing characteristics are CPU model dependent. This patch addresses the number of interrupt sources and where the ISR prologues are located. The only way to currently install the ISR prologues requires that the prologues be installed into RAM. --- .../lib/libcpu/mips/shared/interrupts/maxvectors.c | 29 ++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 c/src/lib/libcpu/mips/shared/interrupts/maxvectors.c (limited to 'c/src/lib/libcpu/mips/shared/interrupts/maxvectors.c') diff --git a/c/src/lib/libcpu/mips/shared/interrupts/maxvectors.c b/c/src/lib/libcpu/mips/shared/interrupts/maxvectors.c new file mode 100644 index 0000000000..c1e5df20a4 --- /dev/null +++ b/c/src/lib/libcpu/mips/shared/interrupts/maxvectors.c @@ -0,0 +1,29 @@ +/* + * This file contains the maximum number of vectors. This can not + * be determined without knowing the RTEMS CPU model. + * + * COPYRIGHT (c) 1989-2000. + * On-Line Applications Research Corporation (OAR). + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.OARcorp.com/rtems/license.html. + * + * $Id$ + */ + + +/* + * The tx3904 attaches 4 of the eight interrupt bits to an on-CPU interrupt + * controller so that these four bits map to 16 unique interrupts. + * So you have: 2 software interrupts, an NMI, and 16 others. + */ +#if defined(tx3904) +#define MAX_VECTORS 19 +#endif + +#ifndef MAX +#define MAX_VECTORS 8 +#endif + +unsigned int mips_interrupt_number_of_vectors = MAX_VECTORS; -- cgit v1.2.3