1# Copyright 2003-2019 Free Software Foundation, Inc. 2# 3# This program is free software; you can redistribute it and/or modify 4# it under the terms of the GNU General Public License as published by 5# the Free Software Foundation; either version 3 of the License, or 6# (at your option) any later version. 7# 8# This program is distributed in the hope that it will be useful, 9# but WITHOUT ANY WARRANTY; without even the implied warranty of 10# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11# GNU General Public License for more details. 12# 13# You should have received a copy of the GNU General Public License 14# along with this program. If not, see <http://www.gnu.org/licenses/>. 15# 16 17# Tests for Powerpc E500 register setting and fetching 18 19# 20# Test the use of registers, especially E500 registers, for Powerpc. 21# This file uses e500-regs.c for input. 22# 23 24 25if ![istarget "powerpc-*eabispe"] then { 26 verbose "Skipping e500 register tests." 27 return 28} 29 30set testfile "e500-regs" 31set binfile ${objdir}/${subdir}/${testfile} 32set src1 ${srcdir}/${subdir}/${testfile}.c 33 34if { [gdb_compile ${src1} ${binfile} executable {debug nowarnings}] != "" } { 35 untested "failed to compile" 36 return -1 37} 38 39gdb_start 40gdb_reinitialize_dir $srcdir/$subdir 41gdb_load ${binfile} 42 43# 44# Run to `main' where we begin our tests. 45# 46 47if ![runto_main] then { 48 fail "can't run to main" 49 return 0 50} 51 52# set all the registers integer portions to 1 53for {set i 0} {$i < 32} {incr i 1} { 54 for {set j 0} {$j < 2} {incr j 1} { 55 gdb_test "set \$ev$i.v2_int32\[$j\] = 1" "" "set reg ev$i.v4si.f\[$j\]" 56 } 57} 58 59# Now execute some target code, so that GDB's register cache is flushed. 60 61#gdb_test "next" "" "" 62 63set endianness [get_endianness] 64 65# And then read the E500 registers back, to see that 66# a) the register write above worked, and 67# b) the register read (below) also works. 68 69if {$endianness == "big"} { 70set vector_register ".uint64 = 0x100000001, v2_float = .0x0, 0x0., v2_int32 = .0x1, 0x1., v4_int16 = .0x0, 0x1, 0x0, 0x1., v8_int8 = .0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1.." 71} else { 72set vector_register ".uint64 = 0x100000001, v2_float = .0x0, 0x0., v2_int32 = .0x1, 0x1., v4_int16 = .0x1, 0x0, 0x1, 0x0., v8_int8 = .0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0.." 73} 74 75for {set i 0} {$i < 32} {incr i 1} { 76 gdb_test "info reg ev$i" "ev$i.*$vector_register" "info reg ev$i" 77} 78 79# Test wether the GPRs are updated accordingly. (GPRs are just the lower 80# 32 bits of the EV registers.) 81 82set general_register "0x1\[ \t\]+1" 83 84for {set i 0} {$i < 32} {incr i 1} { 85 gdb_test "info reg r$i" "r$i.*$general_register" "info reg r$i" 86} 87 88# Now redo the same tests, but using the print command. 89 90if {$endianness == "big"} { 91 set decimal_vector ".uint64 = 4294967297, v2_float = .1.*e-45, 1.*e-45., v2_int32 = .1, 1., v4_int16 = .0, 1, 0, 1., v8_int8 = .0, 0, 0, 1, 0, 0, 0, 1.." 92} else { 93 set decimal_vector ".uint64 = 4294967297, v2_float = .1.*e-45, 1.*e-45., v2_int32 = .1, 1., v4_int16 = .1, 0, 1, 0., v8_int8 = .1, 0, 0, 0, 1, 0, 0, 0.." 94} 95 96for {set i 0} {$i < 32} {incr i 1} { 97 gdb_test "print \$ev$i" ".* = $decimal_vector" "print ev$i" 98} 99 100for {set i 0} {$i < 32} {incr i 1} { 101 set pattern$i ".*ev$i.*" 102 append pattern$i $vector_register 103} 104 105send_gdb "info vector\n" 106gdb_expect_list "info vector" ".*$gdb_prompt $" { 107[$pattern0] 108[$pattern1] 109[$pattern2] 110[$pattern3] 111[$pattern4] 112[$pattern5] 113[$pattern6] 114[$pattern7] 115[$pattern8] 116[$pattern9] 117[$pattern10] 118[$pattern11] 119[$pattern12] 120[$pattern13] 121[$pattern14] 122[$pattern15] 123[$pattern16] 124[$pattern17] 125[$pattern18] 126[$pattern19] 127[$pattern20] 128[$pattern21] 129[$pattern22] 130[$pattern23] 131[$pattern24] 132[$pattern25] 133[$pattern26] 134[$pattern27] 135[$pattern28] 136[$pattern29] 137[$pattern30] 138[$pattern31] 139} 140 141# We must restart everything, because we have set important registers to 142# some unusual values. 143 144gdb_exit 145gdb_start 146gdb_reinitialize_dir $srcdir/$subdir 147gdb_load ${binfile} 148if ![runto_main] then { 149 fail "can't run to main" 150 return 0 151} 152 153gdb_test "break vector_fun" \ 154 "Breakpoint 2 at.*e500-regs.c, line \[0-9\]+\\." \ 155 "set breakpoint at vector_fun" 156 157# Actually it is nuch easier to see these results printed in hex. 158# gdb_test "set output-radix 16" \ 159# "Output radix now set to decimal 16, hex 10, octal 20." \ 160# "set output radix to hex" 161 162gdb_test "continue" \ 163 "Breakpoint 2, vector_fun .a=.-2, -2., b=.1, 1.*e500-regs.c.*ev_create_s32 .2, 2.;" \ 164 "continue to vector_fun" 165 166# Do a next over the assignment to vector 'a'. 167gdb_test "next" ".*b = \\(vector int\\) __ev_create_s32 \\(3, 3\\);" \ 168 "next (1)" 169 170# Do a next over the assignment to vector 'b'. 171gdb_test "next" "c = __ev_and \\(a, b\\);" \ 172 "next (2)" 173 174# Now 'a' should be '0x02020202...' and 'b' should be '0x03030303...' 175gdb_test "print/x a" \ 176 ".*= .0x2, 0x2." \ 177 "print vector parameter a" 178 179gdb_test "print/x b" \ 180 ".*= .0x3, 0x3." \ 181 "print vector parameter b" 182 183# If we do an 'up' now, and print 'x' and 'y' we should see the values they 184# have in main, not the values they have in vector_fun. 185gdb_test "up" ".1.*main \\(\\) at.*e500-regs.c.*z = vector_fun \\(x, y\\);" \ 186 "up to main" 187 188gdb_test "print x" \ 189 ".*= .-2, -2." \ 190 "print vector x" 191 192gdb_test "print y" \ 193 ".*= .1, 1." \ 194 "print vector y" 195 196# now go back to vector_func and do a finish, to see if we can print the return 197# value correctly. 198 199gdb_test "down" \ 200 ".0 vector_fun \\(a=.2, 2., b=.3, 3.\\) at.*e500-regs.c.*c = __ev_and \\(a, b\\);" \ 201 "down to vector_fun" 202 203gdb_test "finish" \ 204 "Run till exit from .0 vector_fun \\(a=.2, 2., b=.3, 3.\\) at.*e500-regs.c.*main \\(\\) at.*e500-regs.c.*z = vector_fun \\(x, y\\);.*Value returned is.*= .2, 2." \ 205 "finish returned correct value" 206 207 208 209