gdb/testsuite/gdb.arch/amd64-entry-value.exp

   1 # Copyright (C) 2011-2022 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 standard_testfile .s
  17 set opts {nopie}
  18
  19 if [info exists COMPILE] {
  20     # make check RUNTESTFLAGS="gdb.arch/amd64-entry-value.exp COMPILE=1"
  21     set srcfile ${testfile}.cc
  22     lappend opts debug optimize=-O2
  23 } elseif { ![istarget x86_64-*-* ] || ![is_lp64_target] } {
  24     verbose "Skipping amd64-entry-value."
  25     return
  26 }
  27
  28 if { [prepare_for_testing "failed to prepare" ${testfile} ${srcfile} $opts] } {
  29     return -1
  30 }
  31
  32 if ![runto_main] {
  33     return -1
  34 }
  35
  36 gdb_breakpoint "breakhere"
  37 gdb_breakpoint "breakhere_locexpr"
  38 gdb_breakpoint "stacktest"
  39 gdb_breakpoint "breakhere_stacktest"
  40 gdb_breakpoint "different"
  41 gdb_breakpoint "breakhere_different"
  42 gdb_breakpoint "breakhere_validity"
  43 gdb_breakpoint "breakhere_invalid"
  44 gdb_breakpoint "reference"
  45 gdb_breakpoint "breakhere_reference"
  46
  47
  48 # Test @entry values for register passed parameters.
  49
  50 gdb_continue_to_breakpoint "entry: breakhere"
  51
  52 gdb_test "bt" "^bt\r\n#0 +d *\\(i=31, i@entry=30, j=31\\.5, j@entry=30\\.5\\) \[^\r\n\]*\r\n#1 +0x\[0-9a-f\]+ in main .*" \
  53          "entry: bt"
  54 gdb_test "p i" " = 31" "entry: p i"
  55 gdb_test "p i@entry" " = 30" "entry: p i@entry"
  56 gdb_test "p j" { = 31\.5} "entry: p j"
  57 gdb_test "p j@entry" { = 30\.5} "entry: p j@entry"
  58
  59
  60 # Test @entry values when parameter in function is locexpr (and not loclist).
  61
  62 gdb_continue_to_breakpoint "entry_locexpr: breakhere_locexpr"
  63 gdb_test "p i" " = 30" "entry_locexpr: p i"
  64 gdb_test_no_output "set variable i = 0" "entry_locexpr: set variable i = 0"
  65 gdb_test "bt" "^bt\r\n#0 +locexpr *\\(i=0, i@entry=30\\) \[^\r\n\]*\r\n#1 +0x\[0-9a-f\]+ in main .*" \
  66          "entry_locexpr: bt"
  67
  68
  69 # Test @entry values for stack passed parameters.
  70
  71 gdb_continue_to_breakpoint "entry_stack: stacktest"
  72
  73 gdb_test "bt" "^bt\r\n#0 +stacktest *\\(r1=r1@entry=1, r2=r2@entry=2, \[^\r\n\]+, s1=s1@entry=11, s2=s2@entry=12, \[^\r\n\]+, d9=d9@entry=11\\.5, da=da@entry=12\\.5\\) \[^\r\n\]*\r\n#1 +0x\[0-9a-f\]+ in main .*" \
  74          "entry_stack: bt at entry"
  75
  76 gdb_continue_to_breakpoint "entry_stack: breakhere_stacktest"
  77
  78 gdb_test "bt" "^bt\r\n#0 +stacktest *\\(r1=r1@entry=1, r2=r2@entry=2, \[^\r\n\]+, s1=3, s1@entry=11, s2=4, s2@entry=12, \[^\r\n\]+, d9=3\\.5, d9@entry=11\\.5, da=4\\.5, da@entry=12\\.5\\) \[^\r\n\]*\r\n#1 +0x\[0-9a-f\]+ in main .*" \
  79          "entry_stack: bt"
  80
  81 gdb_test "p s1" " = 3" "entry_stack: p s1"
  82 gdb_test "p s1@entry" " = 11" "entry_stack: p s1@entry"
  83 gdb_test "p s2" " = 4" "entry_stack: p s2"
  84 gdb_test "p s2@entry" " = 12" "entry_stack: p s2@entry"
  85 gdb_test "p d9" " = 3\\.5" "entry_stack: p d9"
  86 gdb_test "p d9@entry" " = 11\\.5" "entry_stack: p d9@entry"
  87 gdb_test "p da" " = 4\\.5" "entry_stack: p da"
  88 gdb_test "p da@entry" " = 12\\.5" "entry_stack: p da@entry"
  89
  90 # Test @entry values for a static file scoped variable, and for an
  91 # unknown symbol.  Both of these should give an error.
  92 gdb_test "p v@entry" \
  93     "@entry can be used only for function parameters, not for \"v\"" \
  94     "attempt to print global v@entry"
  95 gdb_test "p unknown@entry" \
  96     "@entry can be used only for function parameters, not for \"unknown\"" \
  97     "attempt to print unknown@entry"
  98
  99 # Test various kinds of `set print entry-values'.
 100
 101 gdb_continue_to_breakpoint "entry_equal: breakhere"
 102
 103 gdb_test_no_output "set print entry-values no" "entry_equal: set print entry-values no"
 104 gdb_test "frame" {\(val=5\).*} "entry_equal: frame: no"
 105 gdb_test_no_output "set print entry-values only" "entry_equal: set print entry-values only"
 106 gdb_test "frame" {\(val@entry=5\).*} "entry_equal: frame: only"
 107 gdb_test_no_output "set print entry-values preferred" "entry_equal: set print entry-values preferred"
 108 gdb_test "frame" {\(val@entry=5\).*} "entry_equal: frame: preferred"
 109 gdb_test_no_output "set print entry-values if-needed" "entry_equal: set print entry-values if-needed"
 110 gdb_test "frame" {\(val=5\).*} "entry_equal: frame: if-needed"
 111 gdb_test_no_output "set print entry-values both" "entry_equal: set print entry-values both"
 112 gdb_test "frame" {\(val=5, val@entry=5\).*} "entry_equal: frame: both"
 113 gdb_test_no_output "set print entry-values compact" "entry_equal: set print entry-values compact"
 114 gdb_test "frame" {\(val=val@entry=5\).*} "entry_equal: frame: compact"
 115 gdb_test_no_output "set print entry-values default" "entry_equal: set print entry-values default"
 116 gdb_test "frame" {\(val=val@entry=5\).*} "entry_equal: frame: default"
 117
 118 gdb_continue_to_breakpoint "entry_different: breakhere"
 119
 120 gdb_test_no_output "set print entry-values no" "entry_different: set print entry-values no"
 121 gdb_test "frame" {\(val=6\).*} "entry_different: frame: no"
 122 gdb_test_no_output "set print entry-values only" "entry_different: set print entry-values only"
 123 gdb_test "frame" {\(val@entry=5\).*} "entry_different: frame: only"
 124 gdb_test_no_output "set print entry-values preferred" "entry_different: set print entry-values preferred"
 125 gdb_test "frame" {\(val@entry=5\).*} "entry_different: frame: preferred"
 126 gdb_test_no_output "set print entry-values if-needed" "entry_different: set print entry-values if-needed"
 127 gdb_test "frame" {\(val=6\).*} "entry_different: frame: if-needed"
 128 gdb_test_no_output "set print entry-values both" "entry_different: set print entry-values both"
 129 gdb_test "frame" {\(val=6, val@entry=5\).*} "entry_different: frame: both"
 130 gdb_test_no_output "set print entry-values compact" "entry_different: set print entry-values compact"
 131 gdb_test "frame" {\(val=6, val@entry=5\).*} "entry_different: frame: compact"
 132 gdb_test_no_output "set print entry-values default" "entry_different: set print entry-values default"
 133 gdb_test "frame" {\(val=6, val@entry=5\).*} "entry_different: frame: default"
 134
 135 gdb_continue_to_breakpoint "entry_validity: breakhere"
 136
 137 gdb_test_no_output "set print entry-values no" "entry_validity: set print entry-values no"
 138 gdb_test "frame" {\(lost=<optimized out>, born=10\).*} "entry_validity: frame: no"
 139 gdb_test_no_output "set print entry-values only" "entry_validity: set print entry-values only"
 140 gdb_test "frame" {\(lost@entry=5, born@entry=<optimized out>\).*} "entry_validity: frame: only"
 141 gdb_test_no_output "set print entry-values preferred" "entry_validity: set print entry-values preferred"
 142 gdb_test "frame" {\(lost@entry=5, born=10\).*} "entry_validity: frame: preferred"
 143 gdb_test_no_output "set print entry-values if-needed" "entry_validity: set print entry-values if-needed"
 144 gdb_test "frame" {\(lost@entry=5, born=10\).*} "entry_validity: frame: if-needed"
 145 gdb_test_no_output "set print entry-values both" "entry_validity: set print entry-values both"
 146 gdb_test "frame" {\(lost=<optimized out>, lost@entry=5, born=10, born@entry=<optimized out>\).*} "entry_validity: frame: both"
 147 gdb_test_no_output "set print entry-values compact" "entry_validity: set print entry-values compact"
 148 gdb_test "frame" {\(lost@entry=5, born=10\).*} "entry_validity: frame: compact"
 149 gdb_test_no_output "set print entry-values default" "entry_validity: set print entry-values default"
 150 gdb_test "frame" {\(lost=<optimized out>, lost@entry=5, born=10\).*} "entry_validity: frame: default"
 151
 152 gdb_continue_to_breakpoint "entry_invalid: breakhere"
 153
 154 gdb_test_no_output "set print entry-values no" "entry_invalid: set print entry-values no"
 155 gdb_test "frame" {\(inv=<optimized out>\).*} "entry_invalid: frame: no"
 156 gdb_test_no_output "set print entry-values only" "entry_invalid: set print entry-values only"
 157 gdb_test "frame" {\(inv@entry=<optimized out>\).*} "entry_invalid: frame: only"
 158 gdb_test_no_output "set print entry-values preferred" "entry_invalid: set print entry-values preferred"
 159 gdb_test "frame" {\(inv@entry=<optimized out>\).*} "entry_invalid: frame: preferred"
 160 gdb_test_no_output "set print entry-values if-needed" "entry_invalid: set print entry-values if-needed"
 161 gdb_test "frame" {\(inv=<optimized out>\).*} "entry_invalid: frame: if-needed"
 162 gdb_test_no_output "set print entry-values both" "entry_invalid: set print entry-values both"
 163 gdb_test "frame" {\(inv=<optimized out>, inv@entry=<optimized out>\).*} "entry_invalid: frame: both"
 164 gdb_test_no_output "set print entry-values compact" "entry_invalid: set print entry-values compact"
 165 gdb_test "frame" {\(inv=<optimized out>\).*} "entry_invalid: frame: compact"
 166 gdb_test_no_output "set print entry-values default" "entry_invalid: set print entry-values default"
 167 gdb_test "frame" {\(inv=<optimized out>\).*} "entry_invalid: frame: default"
 168
 169
 170 # Test @entry values for DW_AT_call_data_value parameters.
 171
 172 gdb_continue_to_breakpoint "entry_reference: reference"
 173
 174 # GCC PR debug/49980: Missing stackparam1@entry and stackparam2@entry.
 175 gdb_test "bt" "#0 +reference \\(regparam=regparam@entry=@0x\[0-9a-f\]+: 1, nodataparam=@0x\[0-9a-f\]+: 2, \[^\r\n\]+, stackparam1=@0x\[0-9a-f\]+: 11, stackparam2=@0x\[0-9a-f\]+: 12\\) \[^\r\n\]*\r\n#1 +0x\[0-9a-f\]+ in main \\(\\) \[^\r\n\]*" \
 176          "entry_reference: bt at entry"
 177
 178 gdb_continue_to_breakpoint "entry_reference: breakhere_reference"
 179
 180 # GCC PR debug/49980: Missing stackparam1@entry and stackparam2@entry.
 181 gdb_test "bt" "#0 +reference \\(regparam=@0x\[0-9a-f\]+: 21, regparam@entry=@0x\[0-9a-f\]+: 1, nodataparam=@0x\[0-9a-f\]+: 22, \[^\r\n\]+, stackparam1=@0x\[0-9a-f\]+: 31, stackparam2=@0x\[0-9a-f\]+: 32\\) \[^\r\n\]*\r\n#1 +0x\[0-9a-f\]+ in main \\(\\) \[^\r\n\]*" \
 182          "entry_reference: bt"
 183 gdb_test "ptype regparam" " = int &" "entry_reference: ptype regparam"
 184
 185 set test "entry_reference: p regparam"
 186 set addr ""
 187 gdb_test_multiple "p regparam" $test {
 188     -re " = \\(int &\\) @(0x\[0-9a-f\]+): 21\r\n$gdb_prompt $" {
 189         set addr $expect_out(1,string)
 190         pass $test
 191     }
 192 }
 193
 194 gdb_test "ptype regparam@entry" " = int &" "entry_reference: ptype regparam@entry"
 195 gdb_test "p regparam@entry" " = \\(int &\\) @$addr: 1" "entry_reference: p regparam@entry"
 196 gdb_test "p &regparam@entry" " = \\(int \\*\\) $addr" "entry_reference: p &regparam@entry"
 197 gdb_test "p regcopy" " = 1" "entry_reference: p regcopy"
 198 gdb_test "p nodataparam" " = \\(int &\\) @0x\[0-9a-f\]+: 22" "entry_reference: p nodataparam"
 199 gdb_test "p nodataparam@entry" "Cannot resolve DW_AT_call_data_value" "entry_reference: p nodataparam@entry"
 200
 201
 202 # Test virtual tail call frames.
 203
 204 gdb_continue_to_breakpoint "tailcall: breakhere"
 205
 206 gdb_test "bt" "^bt\r\n#0 +d *\\(i=71, i@entry=70, j=73\\.5, j@entry=72\\.5\\) \[^\r\n\]*\r\n#1 +0x\[0-9a-f\]+ in c \\(i=i@entry=7, j=j@entry=7\\.25\\) \[^\r\n\]*\r\n#2 +0x\[0-9a-f\]+ in b \\(i=i@entry=5, j=j@entry=5\\.25\\) \[^\r\n\]*\r\n#3 +0x\[0-9a-f\]+ in main \[^\r\n\]*" \
 207          "tailcall: bt"
 208 gdb_test "p i" " = 71" "tailcall: p i"
 209 gdb_test "p i@entry" " = 70" "tailcall: p i@entry"
 210 gdb_test "p j" " = 73\\.5" "tailcall: p j"
 211 gdb_test "p j@entry" " = 72\\.5" "tailcall: p j@entry"
 212
 213 # Test $sp simulation for tail call frames.
 214 #gdb_test {p/x $sp} " = 0x.*"
 215 #gdb_test {p/x $pc} " = 0x.*"
 216 gdb_test_no_output {set $sp0=$sp}
 217 gdb_test "up" "\r\n#1 .*"
 218 #gdb_test {p/x $sp} " = 0x.*"
 219 gdb_test {p $sp0 == $sp} " = true"
 220 gdb_test "frame 3" "\r\n#3 .*"
 221 gdb_test {p $sp0 + sizeof (void *) == $sp} " = true"
 222
 223 # Test $pc adjustment which is now right after the function end.
 224 # Also verify the current PC indicator "=> " is not displayed anywhere.
 225 gdb_test "down" "\r\n#2 .*"
 226 set test "disassemble"
 227 gdb_test_multiple $test $test {
 228     -re "^$test\r\n" {
 229         exp_continue
 230     }
 231     -re "^Dump of assembler code for function b\\(int, double\\):\r\n" {
 232         exp_continue
 233     }
 234     -re "^   0x\[^\r\n\]*\r\n" {
 235         exp_continue
 236     }
 237     -re "^End of assembler dump\\.\r\n$gdb_prompt $" {
 238         pass $test
 239     }
 240 }
 241
 242
 243 # Test partial-ambiguous virtual tail call frames chain.
 244
 245 gdb_continue_to_breakpoint "ambiguous: breakhere"
 246
 247 gdb_test "bt" "^bt\r\n#0 +d \\(i=<optimized out>, j=<optimized out>\\)\[^\r\n\]*\r\n#1 +0x\[0-9a-f\]+ in amb_z \\(i=<optimized out>\\)\[^\r\n\]*\r\n#2 +0x\[0-9a-f\]+ in amb_y \\(i=<optimized out>\\)\[^\r\n\]*\r\n#3 +0x\[0-9a-f\]+ in amb_x \\(i=<optimized out>\\)\[^\r\n\]*\r\n#4 +0x\[0-9a-f\]+ in amb_b \\(i=i@entry=101\\)\[^\r\n\]*\r\n#5 +0x\[0-9a-f\]+ in amb_a \\(i=i@entry=100\\)\[^\r\n\]*\r\n#6 +0x\[0-9a-f\]+ in main \\(\\)\[^\r\n\]*" \
 248          "ambiguous: bt"
 249
 250
 251 # Test self tail calls verification.
 252 # GDB should not print the real value as it is ambiguous.
 253
 254 gdb_continue_to_breakpoint "self: breakhere"
 255
 256 gdb_test "bt" "^bt\r\n#0 +d \\(i=<optimized out>, j=<optimized out>\\)\[^\r\n\]*\r\n#1 +0x\[0-9a-f\]+ in self \\(i=<optimized out>\\)\[^\r\n\]*\r\n#2 +0x\[0-9a-f\]+ in main \\(\\)\[^\r\n\]*" \
 257          "self: bt"
 258
 259 gdb_test_no_output "set debug entry-values 1"
 260 gdb_test "bt" "DW_OP_entry_value resolving has found function \"self\\(int\\)\" at 0x\[0-9a-f\]+ can call itself via tail calls\r\n.*" \
 261          "self: bt debug entry-values"