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# Copyright (C) 2002-2023 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 <http://www.gnu.org/licenses/>.
#
# Tests for Powerpc AltiVec register setting and fetching
#
# Test the use of registers, especially AltiVec registers, for Powerpc.
# This file uses altivec-regs.c for input.
#
require allow_altivec_tests
standard_testfile
set compile_flags {debug nowarnings}
if [test_compiler_info gcc*] {
set compile_flags "$compile_flags additional_flags=-maltivec additional_flags=-mabi=altivec"
} elseif [test_compiler_info xlc*] {
set compile_flags "$compile_flags additional_flags=-qaltivec"
} else {
warning "unknown compiler"
return -1
}
if { [gdb_compile ${srcdir}/${subdir}/${srcfile} ${binfile} executable $compile_flags] != "" } {
untested "failed to compile"
return -1
}
gdb_start
gdb_reinitialize_dir $srcdir/$subdir
gdb_load ${binfile}
#
# Run to `main' where we begin our tests.
#
if {![runto_main]} {
return 0
}
gdb_breakpoint [gdb_get_line_number "start here"]
gdb_continue_to_breakpoint "start here"
gdb_test "set print frame-arguments all"
# set all the registers integer portions to 1
for {set i 0} {$i < 32} {incr i 1} {
for {set j 0} {$j < 4} {incr j 1} {
gdb_test "set \$vr$i.v4_int32\[$j\] = 1" "" "set reg vr$i.v4si.f\[$j\]"
}
}
gdb_test "set \$vscr = 1" "" ""
gdb_test "set \$vrsave = 1" "" ""
# Now execute some target code, so that GDB's register cache is flushed.
gdb_test "next" "" ""
set endianness [get_endianness]
# And then read the AltiVec registers back, to see that
# a) the register write above worked, and
# b) the register read (below) also works.
if {$endianness == "big"} {
set vector_register ".uint128 = 0x1000000010000000100000001, v4_float = .0x1, 0x1, 0x1, 0x1., v4_int32 = .0x1, 0x1, 0x1, 0x1., v8_int16 = .0x0, 0x1, 0x0, 0x1, 0x0, 0x1, 0x0, 0x1., v16_int8 = .0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1.."
} else {
set vector_register ".uint128 = 0x1000000010000000100000001, v4_float = .0x1, 0x1, 0x1, 0x1., v4_int32 = .0x1, 0x1, 0x1, 0x1., v8_int16 = .0x1, 0x0, 0x1, 0x0, 0x1, 0x0, 0x1, 0x0., v16_int8 = .0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0.."
}
for {set i 0} {$i < 32} {incr i 1} {
gdb_test "info reg vr$i" "vr$i.*$vector_register" "info reg vr$i"
gdb_test "info reg v$i" "v$i.*$vector_register" "info reg v$i"
}
gdb_test "info reg vrsave" "vrsave.*0x1\[ \t\]+1" "info reg vrsave"
gdb_test "info reg vscr" "vscr.*0x1\[ \t\]+1" "info reg vscr"
# Now redo the same tests, but using the print command.
# Note: in LE case, the char array is printed WITHOUT the last character.
# Gdb treats the terminating null char in the array like the terminating
# null char in a string and doesn't print it. This is not a failure, but
# the way gdb works.
if {$endianness == "big"} {
set decimal_vector ".uint128 = 79228162532711081671548469249, v4_float = .1.*e-45, 1.*e-45, 1.*e-45, 1.*e-45., v4_int32 = .1, 1, 1, 1., v8_int16 = .0, 1, 0, 1, 0, 1, 0, 1., v16_int8 = .0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1.."
} else {
set decimal_vector ".uint128 = 79228162532711081671548469249, v4_float = .1.*e-45, 1.*e-45, 1.*e-45, 1.*e-45., v4_int32 = .1, 1, 1, 1., v8_int16 = .1, 0, 1, 0, 1, 0, 1, 0., v16_int8 = .1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0.."
}
for {set i 0} {$i < 32} {incr i 1} {
gdb_test "print \$vr$i" ".* = $decimal_vector" "print vr$i"
gdb_test "print \$v$i" ".* = $decimal_vector" "print v$i"
}
gdb_test "print \$vrsave" ".* = 1" "print vrsave"
gdb_test "print \$vscr" ".* = 1" "print vscr"
for {set i 0} {$i < 32} {incr i 1} {
lappend pattern_list "vr$i\[ \t\]+$vector_register"
}
lappend pattern_list "vscr\[ \t\]+0x1"
lappend pattern_list "vrsave\[ \t\]+0x1"
send_gdb "info vector\n"
gdb_expect_list "info vector" ".*$gdb_prompt $" $pattern_list
gdb_test "break vector_fun" \
"Breakpoint 2 at.*altivec-regs.c, line \[0-9\]+\\." \
"set breakpoint at vector_fun"
# Actually it is nuch easier to see these results printed in hex.
gdb_test "set output-radix 16" \
"Output radix now set to decimal 16, hex 10, octal 20." \
"set output radix to hex"
gdb_test "continue" \
"Breakpoint 2, vector_fun .a=.0xfefefefe, 0xfefefefe, 0xfefefefe, 0xfefefefe., b=.0x1010101, 0x1010101, 0x1010101, 0x1010101.*altivec-regs.c.*vec_splat_u8.2..;" \
"continue to vector_fun"
# Do a next over the assignment to vector 'a'.
gdb_test "next" ".*b = \\(\\(vector unsigned int\\) vec_splat_u8\\(3\\)\\);" \
"next (1)"
# Do a next over the assignment to vector 'b'.
gdb_test "next" "c = vec_add \\(a, b\\);" \
"next (2)"
# Now 'a' should be '0x02020202...' and 'b' should be '0x03030303...'
gdb_test "print/x a" \
".*= .0x2020202, 0x2020202, 0x2020202, 0x2020202." \
"print vector parameter a"
gdb_test "print/x b" \
".*= .0x3030303, 0x3030303, 0x3030303, 0x3030303." \
"print vector parameter b"
# If we do an 'up' now, and print 'x' and 'y' we should see the values they
# have in main, not the values they have in vector_fun.
gdb_test "up" ".1.*main \\(\\) at.*altivec-regs.c.*z = vector_fun \\(x, y\\);" \
"up to main"
gdb_test "print/x x" \
".*= .0xfefefefe, 0xfefefefe, 0xfefefefe, 0xfefefefe." \
"print vector x"
gdb_test "print/x y" \
".*= .0x1010101, 0x1010101, 0x1010101, 0x1010101." \
"print vector y"
# now go back to vector_func and do a finish, to see if we can print the return
# value correctly.
gdb_test "down" \
".0 vector_fun \\(a=.0x2020202, 0x2020202, 0x2020202, 0x2020202., b=.0x3030303, 0x3030303, 0x3030303, 0x3030303.\\) at.*altivec-regs.c.*c = vec_add \\(a, b\\);" \
"down to vector_fun"
gdb_test "finish" \
"Run till exit from .0 vector_fun \\(a=.0x2020202, 0x2020202, 0x2020202, 0x2020202., b=.0x3030303, 0x3030303, 0x3030303, 0x3030303.\\) at.*altivec-regs.c.*in main \\(\\) at.*altivec-regs.c.*z = vector_fun \\(x, y\\);.*Value returned is.*= .0x5050505, 0x5050505, 0x5050505, 0x5050505." \
"finish returned correct value"
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