gdb/testsuite/gdb.arch/altivec-abi.exp

   1 # Copyright (C) 2002-2021 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 AltiVec ABI
  18
  19
  20 #
  21 # This file uses altivec-abi.c for input.
  22 #
  23
  24 if {![istarget "powerpc*"] || [skip_altivec_tests]} then {
  25     verbose "Skipping altivec abi tests."
  26     return
  27 }
  28
  29 standard_testfile
  30
  31 if [get_compiler_info] {
  32     warning "get_compiler failed"
  33     return -1
  34 }
  35
  36 proc altivec_abi_tests { extra_flags force_abi } {
  37     global testfile binfile srcfile srcdir subdir
  38     global gdb_prompt
  39
  40     set compile_flags "debug nowarnings $extra_flags"
  41
  42     if  { [gdb_compile ${srcdir}/${subdir}/${srcfile} ${binfile} executable $compile_flags] != "" } {
  43         untested "failed to compile"
  44         return -1
  45     }
  46
  47     if { "$force_abi" == "auto" } {
  48         # If the toolchain does not record attributes, skip auto-ABI tests.
  49         set readelf_program [gdb_find_readelf]
  50         set result [catch "exec $readelf_program -A $binfile" output]
  51
  52         if {$result == 0 && ![regexp Tag_GNU_Power_ABI_Vector $output]} {
  53             untested "ABI not marked"
  54             return
  55         }
  56     }
  57
  58     gdb_exit
  59     gdb_start
  60     gdb_reinitialize_dir $srcdir/$subdir
  61     gdb_load ${binfile}
  62
  63     # Run to `main' where we begin our tests.
  64     if ![runto_main] then {
  65         untested "could not run to main"
  66         return -1
  67     }
  68
  69     gdb_test "set print frame-arguments all"
  70     gdb_test "set powerpc vector-abi $force_abi"
  71
  72     gdb_test "b marker" "Breakpoint 2 at.*file.*altivec-abi.c, line \[0-9\]+." "break marker"
  73     gdb_test "continue" "Breakpoint 2.*marker.*altivec-abi.c.*" "continue to marker"
  74     gdb_test "finish" "Run till exit from .0.*marker.*at.*altivec-abi.c.*main \\(\\) at.*altivec-abi.c.*result = vec_func \\(vshort,.*goes in v2.*" "back to main (1)"
  75
  76     # now all the arguments of vec_fun are initialized
  77
  78     set pattern "vec_func .vshort_f=.111, 222, 333, 444, 555, 666, 777, 888., vushort_f=.100, 200, 300, 400, 500, 600, 700, 800., vint_f=.-10, -20, -30, -40., vuint_f=.1111, 2222, 3333, 4444., vchar_f=.97, 98, 99, 100, 101, 102, 103, 104, 105, 108, 109, 110, 111, 112, 113, 114., vuchar_f=.65, 66, 67, 68, 69, 70, 71, 72, 73, 76, 77, 78, 79, 80, 81, 82., vfloat_f=.1.25, 3.75, 5.5, 1.25., x_f=.1, 2, 3, 4, 5, 6, 7, 8., y_f=.12, 22, 32, 42., a_f=.118, 101, 99, 116, 111, 114, 32, 111, 102, 32, 99, 104, 97, 114, 115, 46., b_f=.5.5, 4.5, 3.75, 2.25., c_f=.1.25, 3.5, 5.5, 7.75., intv_on_stack_f=.12, 34, 56, 78.."
  79
  80     set pattern1 $pattern
  81     append pattern1 " at.*altivec-abi.c.*vint_res  = vec_add.*vint_f, intv_on_stack_f.;"
  82
  83     # Now let's call the function.  This function has > 12 args,
  84     # the last one will go on the stack.
  85     set msg "call inferior function with vectors (1)"
  86     gdb_test "p vec_func(vshort,vushort,vint,vuint,vchar,vuchar,vfloat,x,y,a,b,c,intv_on_stack)" \
  87         ".\[0-9\]+ = .14, 36, 58, 80." "call inferior function with vectors (1)"
  88
  89
  90     # Let's call the function again with dummy arguments.  This is to clean
  91     # up the contents of the vector registers before the next call.
  92     gdb_test "p vec_func(vshort_d,vushort_d,vint_d,vuint_d,vchar_d,vuchar_d,vfloat_d,x_d,y_d,a_d,b_d,c_d,intv_on_stack_d)" \
  93         ".\[0-9\]+ = .0, 0, 0, 0." "call inferior function with vectors (2)"
  94
  95     # Attempt to take address of the return value of vec_func.
  96     gdb_test "p &vec_func(vshort,vushort,vint,vuint,vchar,vuchar,vfloat,x,y,a,b,c,intv_on_stack)" \
  97         "Attempt to take address of value not located in memory." \
  98         "Attempt to take address of the return value of vec_func"
  99
 100     # Attempt to assign a value to the return value of vec_func.
 101     gdb_test "set variable vec_func(vshort,vushort,vint,vuint,vchar,vuchar,vfloat,x,y,a,b,c,intv_on_stack) = {0,1,2,3}" \
 102         "Left operand of assignment is not an lvalue." \
 103         "Attempt to assign a value to the return value of vec_func"
 104
 105     # Let's step into the function, to see if the args are printed correctly.
 106     gdb_test "step" \
 107         $pattern1 \
 108         "step into vec_fun"
 109
 110     set pattern2 $pattern
 111     append pattern2 " at.*altivec-abi.c.*main.*result = vec_func .vshort,.*goes in v2.*Value returned is.*= .14, 36, 58, 80."
 112
 113     # Let's see if the result is returned correctly.
 114     set message "vector value returned correctly"
 115     gdb_test_multiple "finish" $message {
 116         -re "Run till exit from .0.*$pattern2.*$gdb_prompt $" {
 117             pass $message
 118         }
 119         -re "Run till exit from .0.*Cannot determine contents.*$gdb_prompt $" {
 120             # This happens in those cases where the vector is returned by
 121             # reference (generic vectors on 64-bit GNU/Linux).
 122             pass $message
 123         }
 124     }
 125
 126     # can we print the args correctly for this function?
 127     gdb_test "break struct_of_vector_func" "" ""
 128
 129     set pattern "struct_of_vector_func .vector_struct=.vshort1 = .1, 2, 3, 4, 5, 6, 7, 8., vshort2 = .11, 12, 13, 14, 15, 16, 17, 18., vshort3 = .21, 22, 23, 24, 25, 26, 27, 28., vshort4 = .31, 32, 33, 34, 35, 36, 37, 38... at.*altivec-abi.c.*"
 130
 131     gdb_test "continue" \
 132         "Breakpoint 3, $pattern.*vector_struct.vshort1 = vec_add .vector_struct.vshort1, vector_struct.vshort2.;" \
 133         "continue to struct_of_vector_func"
 134
 135     gdb_test "finish" \
 136         "Run till exit from .0  $pattern\[ \r\n\]+main.*altivec-abi.c.*array_of_vector_func.*" \
 137         "back to main (2)"
 138
 139     gdb_test "step" "" "step into array_of_vector_func"
 140     gdb_test "p matrix\[0\]" ".*= .1, 2, 3, 4, 5, 6, 7, 8." "print first vector"
 141     gdb_test "p matrix\[1\]" ".*= .11, 12, 13, 14, 15, 16, 17, 18." "print second vector"
 142     gdb_test "p matrix\[2\]" ".*= .21, 22, 23, 24, 25, 26, 27, 28." "print third vector"
 143     gdb_test "p matrix\[3\]" ".*= .31, 32, 33, 34, 35, 36, 37, 38." "print fourth vector"
 144 }
 145
 146 if [test_compiler_info gcc*] {
 147     set binprefix ${binfile}
 148
 149     with_test_prefix "default ABI, auto" {
 150         altivec_abi_tests  "additional_flags=-maltivec" "auto"
 151     }
 152
 153     # On GNU/Linux, we can mix -mabi=no-altivec and -mabi=altivec.
 154     # So test some combinations.
 155     if { [istarget "powerpc*-linux*"] } {
 156         # On 64-bit GNU/Linux with GCC 4.1 and 4.2, -mabi=no-altivec
 157         # was broken, so skip those tests there.
 158         if { ![is_lp64_target] || ![test_compiler_info "gcc-4-\[12\]-*"] } {
 159             set binfile ${binprefix}-ge-ge
 160             with_test_prefix "generic ABI, forced" {
 161                 altivec_abi_tests "additional_flags=-maltivec additional_flags=-mabi=no-altivec" "generic"
 162             }
 163
 164             set binfile ${binprefix}-ge-auto
 165             with_test_prefix "generic ABI, auto" {
 166                 altivec_abi_tests "additional_flags=-maltivec additional_flags=-mabi=no-altivec" "auto"
 167             }
 168         }
 169
 170         set binfile ${binprefix}-av-av
 171         with_test_prefix "AltiVec ABI, forced" {
 172             altivec_abi_tests "additional_flags=-maltivec additional_flags=-mabi=altivec" "altivec"
 173         }
 174
 175         set binfile ${binprefix}-av-auto
 176         with_test_prefix "AltiVec ABI, auto" {
 177             altivec_abi_tests "additional_flags=-maltivec additional_flags=-mabi=altivec" "auto"
 178         }
 179     }
 180 } elseif [test_compiler_info xlc*] {
 181     altivec_abi_tests "additional_flags=-qaltivec" "auto"
 182 } else {
 183     warning "unknown compiler"
 184     return -1
 185 }