diff options
Diffstat (limited to 'c/src/lib/libcpu/m68k/m68040/fpsp/x_unimp.S')
| -rw-r--r-- | c/src/lib/libcpu/m68k/m68040/fpsp/x_unimp.S | 79 |
1 files changed, 0 insertions, 79 deletions
diff --git a/c/src/lib/libcpu/m68k/m68040/fpsp/x_unimp.S b/c/src/lib/libcpu/m68k/m68040/fpsp/x_unimp.S deleted file mode 100644 index d153f62186..0000000000 --- a/c/src/lib/libcpu/m68k/m68040/fpsp/x_unimp.S +++ /dev/null @@ -1,79 +0,0 @@ -#include "fpsp-namespace.h" -// -// -// x_unimp.sa 3.3 7/1/91 -// -// fpsp_unimp --- FPSP handler for unimplemented instruction -// exception. -// -// Invoked when the user program encounters a floating-point -// op-code that hardware does not support. Trap vector# 11 -// (See table 8-1 MC68030 User's Manual). -// -// -// Note: An fsave for an unimplemented inst. will create a short -// fsave stack. -// -// Input: 1. Six word stack frame for unimplemented inst, four word -// for illegal -// (See table 8-7 MC68030 User's Manual). -// 2. Unimp (short) fsave state frame created here by fsave -// instruction. -// -// -// Copyright (C) Motorola, Inc. 1990 -// All Rights Reserved -// -// THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF MOTOROLA -// The copyright notice above does not evidence any -// actual or intended publication of such source code. - -X_UNIMP: //idnt 2,1 | Motorola 040 Floating Point Software Package - - |section 8 - -#include "fpsp.defs" - - |xref get_op - |xref do_func - |xref sto_res - |xref gen_except - |xref fpsp_fmt_error - - .global fpsp_unimp - .global uni_2 -fpsp_unimp: - link %a6,#-LOCAL_SIZE - fsave -(%a7) -uni_2: - moveml %d0-%d1/%a0-%a1,USER_DA(%a6) - fmovemx %fp0-%fp3,USER_FP0(%a6) - fmoveml %fpcr/%fpsr/%fpiar,USER_FPCR(%a6) - moveb (%a7),%d0 //test for valid version num - andib #0xf0,%d0 //test for $4x - cmpib #VER_4,%d0 //must be $4x or exit - bnel fpsp_fmt_error -// -// Temporary D25B Fix -// The following lines are used to ensure that the FPSR -// exception byte and condition codes are clear before proceeding -// - movel USER_FPSR(%a6),%d0 - andl #0xFF00FF,%d0 //clear all but accrued exceptions - movel %d0,USER_FPSR(%a6) - fmovel #0,%FPSR //clear all user bits - fmovel #0,%FPCR //clear all user exceptions for FPSP - - clrb UFLG_TMP(%a6) //clr flag for unsupp data - - bsrl get_op //go get operand(s) - clrb STORE_FLG(%a6) - bsrl do_func //do the function - fsave -(%a7) //capture possible exc state - tstb STORE_FLG(%a6) - bnes no_store //if STORE_FLG is set, no store - bsrl sto_res //store the result in user space -no_store: - bral gen_except //post any exceptions and return - - |end |