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[86.164.133.98]) by smtp.gmail.com with ESMTPSA id f11sm60475124wrm.30.2019.04.13.14.36.07 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Sat, 13 Apr 2019 14:36:08 -0700 (PDT) Date: Sat, 13 Apr 2019 21:36:00 -0000 From: Andrew Burgess To: Stafford Horne Cc: GDB patches , GNU Binutils , Andrey Bacherov , Openrisc Subject: Re: [PATCH v2 5/6] sim/or1k: Add test for 64-bit fpu operations Message-ID: <20190413213606.GI2737@embecosm.com> References: <20190409213925.32699-1-shorne@gmail.com> <20190409213925.32699-6-shorne@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190409213925.32699-6-shorne@gmail.com> X-Fortune: If you think before you speak the other guy gets his joke in first. X-Editor: GNU Emacs [ http://www.gnu.org/software/emacs ] User-Agent: Mutt/1.9.2 (2017-12-15) X-IsSubscribed: yes X-SW-Source: 2019-04/txt/msg00164.txt.bz2 * Stafford Horne [2019-04-10 06:39:24 +0900]: > This is a very basic test but it ensure the machine is wired up > correctly and that the assembler works. > > sim/testsuite/sim/or1k/ChangeLog: > > * fpu64a32.S: New file. This is fine. Thanks, Andrew > --- > sim/testsuite/sim/or1k/fpu64a32.S | 172 ++++++++++++++++++++++++++++++ > 1 file changed, 172 insertions(+) > create mode 100644 sim/testsuite/sim/or1k/fpu64a32.S > > diff --git a/sim/testsuite/sim/or1k/fpu64a32.S b/sim/testsuite/sim/or1k/fpu64a32.S > new file mode 100644 > index 0000000000..6c40170854 > --- /dev/null > +++ b/sim/testsuite/sim/or1k/fpu64a32.S > @@ -0,0 +1,172 @@ > +/* Tests some basic fpu instructions. > + > + Copyright (C) 2017-2019 Free Software Foundation, Inc. > + > + 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 . */ > + > +# mach: or1k > +# output: report(0x400921f9);\n > +# output: report(0xf01b866e);\n > +# output: report(0x4005bf09);\n > +# output: report(0x95aaf790);\n > +# output: report(0x00000000);\n > +# output: report(0x00001234);\n > +# output: \n > +# output: report(0x40b23400);\n > +# output: report(0x00000000);\n > +# output: report(0x40b23400);\n > +# output: report(0x00000000);\n > +# output: \n > +# output: report(0x40177081);\n > +# output: report(0xc2e33eff);\n > +# output: report(0x400921f9);\n > +# output: report(0xf01b866e);\n > +# output: \n > +# output: report(0x40211456);\n > +# output: report(0x587dfabf);\n > +# output: report(0x400921f9);\n > +# output: report(0xf01b866d);\n > +# output: \n > +# output: report(0x00000001);\n > +# output: \n > +# output: WARNING: ignoring fpu error caught in fast mode.\n > +# output: report(0x00000000);\n > +# output: \n > +# output: exit(0)\n > + > +#include "or1k-asm-test-helpers.h" > + > + STANDARD_TEST_ENVIRONMENT > + > + .section .exception_vectors > + > + /* Floating point exception. */ > + .org 0xd00 > + > + /* The handling is a bit dubious at present. We just patch the > + instruction with l.nop and restart. This will go wrong in branch > + delay slots. But we don't have those in this test. */ > + l.addi r1, r1, -EXCEPTION_STACK_SKIP_SIZE > + PUSH r2 > + PUSH r3 > + /* Save the address of the instruction that caused the problem. */ > + MOVE_FROM_SPR r2, SPR_EPCR_BASE > + LOAD_IMMEDIATE r3, 0x15000000 /* Opcode for l.nop */ > + l.sw -4(r2), r3 > + POP r3 > + POP r2 > + l.addi r1, r1, EXCEPTION_STACK_SKIP_SIZE > + l.rfe > + > + .section .data > + .align 4 > + .type pi, @object > + .size pi, 8 > +anchor: > +pi: > + .double 3.14159 > + > + .type e, @object > + .size e, 8 > +e: > + .double 2.71828 > + > + .type large, @object > + .size large, 8 > +large: > + .long 0 > + .long 0x1234 > + > + .section .text > +start_tests: > + PUSH LINK_REGISTER_R9 > + > + /* Test lf.itof.d int to double conversion. Setting up: > + * r11 pointer to data > + * r12,r13 pi as double > + * r14,r15 e as double > + * r16,r17 a long long > + */ > + l.ori r11, r0, ha(anchor) > + l.addi r11, r11, lo(anchor) > + l.lwz r12, 0(r11) > + l.lwz r13, 4(r11) > + > + l.lwz r14, 8(r11) > + l.lwz r15, 12(r11) > + > + l.lwz r16, 16(r11) > + l.lwz r18, 20(r11) > + > + /* Output to ensure we loaded it correctly. */ > + REPORT_REG_TO_CONSOLE r12 > + REPORT_REG_TO_CONSOLE r13 > + > + REPORT_REG_TO_CONSOLE r14 > + REPORT_REG_TO_CONSOLE r15 > + > + REPORT_REG_TO_CONSOLE r16 > + REPORT_REG_TO_CONSOLE r18 > + PRINT_NEWLINE_TO_CONSOLE > + > + /* Convert the big long to a double. */ > + lf.itof.d r16, r16 > + REPORT_REG_TO_CONSOLE r16 > + REPORT_REG_TO_CONSOLE r18 > + > + /* Convert the double back to a long, it should match before. */ > + lf.ftoi.d r16, r16 > + lf.itof.d r16, r16 > + > + REPORT_REG_TO_CONSOLE r16 > + REPORT_REG_TO_CONSOLE r18 > + > + PRINT_NEWLINE_TO_CONSOLE > + > + /* Add and subtract some double values. */ > + lf.add.d r12, r12, r14 > + REPORT_REG_TO_CONSOLE r12 > + REPORT_REG_TO_CONSOLE r13 > + > + lf.sub.d r12, r12, r14 > + REPORT_REG_TO_CONSOLE r12 > + REPORT_REG_TO_CONSOLE r13 > + PRINT_NEWLINE_TO_CONSOLE > + > + /* Multiply and divide double values. */ > + lf.mul.d r12, r12, r14 > + REPORT_REG_TO_CONSOLE r12 > + REPORT_REG_TO_CONSOLE r13 > + > + lf.div.d r12, r12, r14 > + REPORT_REG_TO_CONSOLE r12 > + REPORT_REG_TO_CONSOLE r13 > + PRINT_NEWLINE_TO_CONSOLE > + > + /* Test lf.sfge.s set flag if r6 >= r10. */ > + lf.sfge.d r12, r14 > + MOVE_FROM_SPR r2, SPR_SR > + REPORT_BIT_TO_CONSOLE r2, SPR_SR_F > + PRINT_NEWLINE_TO_CONSOLE > + > + /* Test raising an exception by dividing by 0. */ > + MOVE_FROM_SPR r2, SPR_FPCSR > + l.ori r2, r2, 0x1 > + MOVE_TO_SPR SPR_FPCSR, r2 > +div0: lf.div.d r2, r12, r0 > + REPORT_EXCEPTION div0 > + PRINT_NEWLINE_TO_CONSOLE > + > + POP LINK_REGISTER_R9 > + RETURN_TO_LINK_REGISTER_R9 > -- > 2.19.1 >