| # MIPS simulator testsuite utility functions. |
| # Copyright (C) 2004-2024 Free Software Foundation, Inc. |
| # Contributed by Chris Demetriou of Broadcom Corporation. |
| # |
| # This file is part of the GNU simulators. |
| # |
| # 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 <http://www.gnu.org/licenses/>. */ |
| |
| |
| # $1, $4, $5, %6, are used as temps by the macros defined here. |
| |
| .macro writemsg msg |
| la $5, 901f |
| li $6, 902f - 901f |
| .data |
| 901: .ascii "\msg\n" |
| 902: |
| .previous |
| .set push |
| .set noreorder |
| jal _dowrite |
| li $4, 0 |
| .set pop |
| .endm |
| |
| |
| # The MIPS simulator uses "break 0x3ff" as the code to exit, |
| # with the return value in $4 (a0). |
| .macro exit rc |
| li $4, \rc |
| break 0x3ff |
| .endm |
| |
| |
| .macro setup |
| |
| .global _start |
| .global __start |
| .ent _start |
| _start: |
| __start: |
| .set push |
| .set noreorder |
| j DIAG |
| nop |
| .set pop |
| .end _start |
| |
| .global _fail |
| .ent _fail |
| _fail: |
| writemsg "fail" |
| exit 1 |
| .end _fail |
| |
| .global _pass |
| .ent _pass |
| _pass: |
| writemsg "pass" |
| exit 0 |
| .end _pass |
| |
| # The MIPS simulator can use multiple different monitor types, |
| # so we hard-code the simulator "write" reserved instruction opcode, |
| # rather than jumping to a vector that invokes it. The operation |
| # expects RA to point to the location at which to continue |
| # after writing. |
| .global _dowrite |
| .ent _dowrite |
| _dowrite: |
| # Write opcode (reserved instruction). See sim_monitor and its |
| # callers in sim/mips/interp.c. |
| .word 0x00000039 | ((8 << 1) << 6) |
| .end _dowrite |
| |
| .endm # setup |
| |
| |
| .macro pass |
| .set push |
| .set noreorder |
| j _pass |
| nop |
| .set pop |
| .endm |
| |
| |
| .macro fail |
| .set push |
| .set noreorder |
| j _fail |
| nop |
| .set pop |
| .endm |
| |
| |
| .macro load32 reg, val |
| li \reg, \val |
| .endm |
| |
| |
| .macro load64 reg, val |
| dli \reg, \val |
| .endm |
| |
| |
| .macro loadaddr reg, addr |
| la \reg, \addr |
| .endm |
| |
| |
| .macro checkreg reg, expreg |
| .set push |
| .set noat |
| .set noreorder |
| beq \expreg, \reg, 901f |
| nop |
| fail |
| 901: |
| .set pop |
| .endm |
| |
| |
| .macro check32 reg, val |
| .set push |
| .set noat |
| load32 $1, \val |
| checkreg \reg, $1 |
| .set pop |
| .endm |
| |
| |
| .macro check64 reg, val |
| .set push |
| .set noat |
| load64 $1, \val |
| checkreg \reg, $1 |
| .set pop |
| .endm |
| |
| |
| # Check hi-lo register pair against data stored at base+o1 and base+o2 |
| # Clobbers $1 - $5 |
| .macro checkpair lo, hi, base, w, o1, o2 |
| move $2, \lo |
| move $3, \hi |
| .set noat |
| la $1, \base |
| l\w $4, \o1($1) |
| l\w $5, \o2($1) |
| .set at |
| checkreg $2, $4 |
| checkreg $3, $5 |
| .endm |
| |
| .macro checkpair_le_d lo, hi, base |
| checkpair \lo, \hi, \base, w, 0, 4 |
| .endm |
| |
| .macro checkpair_be_d lo, hi, base |
| checkpair \lo, \hi, \base, w, 4, 0 |
| .endm |
| |
| .macro checkpair_le_q lo, hi, base |
| checkpair \lo, \hi, \base, d, 0, 8 |
| .endm |
| |
| .macro checkpair_be_q lo, hi, base |
| checkpair \lo, \hi, \base, d, 8, 0 |
| .endm |
| |
| # Endian-ness for comparison is determined by reading a word at ec |
| .macro checkpair_xendian lo, hi, base, ec, w |
| .set noat |
| lw $1, \ec |
| andi $1, $1, 0x1 |
| # check endianess |
| beqz $1, 2f |
| .set at |
| 1: # big endian |
| checkpair_be_\w \lo, \hi, \base |
| b 3f |
| 2: # little endian |
| checkpair_le_\w \lo, \hi, \base |
| 3: |
| .endm |
| |
| .macro checkpair_qword lo, hi, base, oe |
| checkpair_xendian \lo, \hi, \base, \oe, q |
| .endm |
| |
| .macro checkpair_dword lo, hi, base, oe |
| checkpair_xendian \lo, \hi, \base, \oe, d |
| .endm |