| # This testcase is part of GDB, the GNU debugger. |
| |
| # Copyright 2017-2021 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/>. |
| |
| if {![istarget "arc*-*-*"]} then { |
| verbose "Skipping ARC prologue test." |
| return |
| } |
| |
| standard_testfile .S |
| |
| if { [prepare_for_testing "failed to prepare" $testfile $srcfile] } { |
| return -1 |
| } |
| |
| if ![runto_main] { |
| return 0 |
| } |
| |
| # Convert list of saved registers and their offsets to a GDB string. |
| proc saved_regs_to_str { savedregs funcname } { |
| set str "" |
| # If blink is stored, that it is present twice in saved regs - as blink and |
| # as pc. |
| set has_blink 0 |
| set blink_addr 0 |
| foreach r $savedregs { |
| if { [llength $r] == 1 } { |
| append str ".*$r at.*" |
| } else { |
| set name [lindex $r 0] |
| set offset [lindex $r 1] |
| set addr [get_hexadecimal_valueof "\$sp+$offset" 0 \ |
| "get value of $name@sp+$offset in $funcname"] |
| append str "\\s*$name at $addr,?" |
| if { $name == "blink" } { |
| set has_blink 1 |
| set blink_addr $addr |
| } |
| } |
| } |
| if { $has_blink == 1 } { |
| append str "\\s*pc at $blink_addr" |
| } |
| return $str |
| } |
| |
| # Arguments: |
| # funcname - name of function to test |
| # savedregs - list of register saved in the frame. Each entry can be either |
| # a string, where it is a register name, or it is a list of two |
| # items - name of register and it's offset relatively to SP in |
| # the memory. SP value is at the moment of prologue end. |
| # fp_offset - if not an empty string, then proc will test that FP register |
| # has a value that is (SP + offset). |
| |
| proc prologue_test {funcname {savedregs ""} {fp_offset ""} } { |
| global hex |
| gdb_breakpoint $funcname temporary |
| gdb_continue_to_breakpoint $funcname |
| gdb_test "backtrace 10" \ |
| "#0\[ \t\]*$hex in $funcname .*\r\n#1\[ \t\]*$hex in main.*" \ |
| "backtrace in $funcname" |
| if { $savedregs != "" } { |
| set str [saved_regs_to_str $savedregs $funcname] |
| gdb_test "info frame" \ |
| ".*Saved registers:$str" \ |
| "saved registers in $funcname" |
| } |
| if { $fp_offset != "" } { |
| set sp [get_integer_valueof \$sp -1 "get value of sp in $funcname"] |
| set fp_val [expr $sp + $fp_offset] |
| set fp_real_val \ |
| [get_integer_valueof \$fp 0 "get value of fp in $funcname"] |
| if { $fp_real_val != $fp_val } { |
| fail "check FP value in $funcname" |
| } else { |
| pass "check FP value in $funcname" |
| } |
| } |
| } |
| |
| |
| prologue_test "standard_prologue" { {r13 0} {r14 4} {r18 8} {blink 12} } |
| prologue_test "mini_prologue" { {r13 0} {r14 8} {r15 4} {blink 12} } |
| prologue_test "no_subsp_prologue" { {r13 8} {r20 4} {r25 0} {blink 12} } |
| prologue_test "leaf_prologue" { {r13 0} {r15 4} } |
| prologue_test "pushfp_prologue" { {r13 8} {r14 4} {fp 0} } 0 |
| prologue_test "fp_prologue_with_store" { {r13 12} {r14 8} {r15 0} {fp 4} } 4 |
| prologue_test "noncallee_saved_regs_r12_st" { {r12 0} {r13 4} } |
| # Register offset is specified relatively to SP at the prologue end, so |
| # "push r12" hasn't been executed at this moment. |
| prologue_test "noncallee_saved_regs_r12_push" { {r12 0} {r13 4} } |
| prologue_test "noncallee_saved_regs_r2_push" { {r2 0} {r13 4} } |
| prologue_test "noncallee_saved_regs_gp_push" { {r25 4} {gp 0} } |
| prologue_test "noncallee_saved_regs_lp_count" { {r25 4} {lp_count 0} } |
| prologue_test "noncallee_saved_regs_blink_out_of_prologue" { {r25 8} {gp 4} \ |
| {blink 0}} |
| # Argument registers are not reported as "saved" regs. |
| prologue_test "arg_regs_fp" { {r0 12} {r1 8} {r7 4} {r8 0} {fp 16} } 16 |
| prologue_test "arg_regs_fp_mov_s" { {r0 4} {r8 0} {fp 8} } 8 |
| prologue_test "arg_regs_sp" { {r0 0} {r1 4} {r7 8} {r8 12} {r13 16} {r14 20} } |
| prologue_test "enter_s_nop" |
| prologue_test "enter_s_blink" { {blink 0} } |
| prologue_test "enter_s_fp" { {fp 0} } 0 |
| # Layout of registers as stored by enter_s doesn't conform to ARC ABI. |
| prologue_test "enter_s_r13" { {r13 4} {fp 8} {blink 0} } 0 |
| prologue_test "enter_s_r15" { {r13 0} {r14 4} {r15 8} } 0 |
| # This enter_s saves GP, however because it is not a "calle-saved register", |
| # GDB will not report it as "saved register" (but maybe it should). GP is at |
| # offset 56. |
| prologue_test "enter_s_all" { {r13 4} {r14 8} {r15 12} {r16 16} {r17 20} \ |
| {r18 24} {r19 28} {r20 32} {r21 36} {r22 40} {r23 44} {r24 48} {r25 52} \ |
| {gp 56} {fp 60} {blink 0} } 0 |
| |
| # Test more levels of backtrace. |
| gdb_breakpoint nested_prologue_inner temporary |
| gdb_continue_to_breakpoint nested_prologue_inner |
| gdb_test "backtrace 10" \ |
| "#0\[ \t\]*$hex in nested_prologue_inner .*\r\n#1\[ \t\]*$hex in nested_prologue_outer .*\r\n#2\[ \t\]*$hex in main.*" \ |
| "backtrace in nested_prologue_inner" |
| set regs [saved_regs_to_str {r13 r18} "nested_prologue_inner"] |
| gdb_test "info frame" ".*Saved registers:$regs" \ |
| "saved registers in nested_prologue_inner" |
| set regs [saved_regs_to_str {r14 r15 blink} "nested_prologue_inner"] |
| gdb_test "info frame 1" ".*Saved registers:$regs" \ |
| "saved registers in nested_prologue_outer" |
| |
| # sub sp,sp for local variables is part of prologue, hence should be added to |
| # all of those offsets. |
| prologue_test "max_length_prologue" { {r0 72} {r1 76} {r2 80} {r3 84} {r4 88} \ |
| {r5 92} {r6 96} {r7 100} {r13 20} {r14 24} {r15 28} {r16 32} \ |
| {r17 36} {r18 40} {r19 44} {r20 48} {r21 52} {r22 56} {r23 60} {r24 64} \ |
| {r25 68} {fp 16} {blink 104} } |
| |
| prologue_test "branch_in_prologue" { {r13 0} } |
| prologue_test "cond_branch_in_prologue" { {r13 4} } |
| prologue_test "jump_in_prologue" { {r13 0} } |
| prologue_test "cond_jump_in_prologue" { {r13 4} } |
| prologue_test "predicated_insn" { {r13 8} {r15 0} } |
| prologue_test "loop_in_prologue" { {r25 4} {lp_count 0} } |
| prologue_test "store_constant" { {r13 8} {r14 4} } |
| prologue_test "st_c_limm" { {r15 0} } |
| prologue_test "st_ab_writeback" { {r13 8} {r14 4} {r15 0} } |
| prologue_test "st_as_writeback" { {r13 8} {r14 4} {r15 0} } |
| prologue_test "sth_as_writeback" { {r13 8} {r15 0} } |
| prologue_test "std_as_writeback" { {r13 12} {r14 4} {r15 8} {r16 0} } |
| prologue_test "st_halfword" { {r13 8} {r15 0} } |
| prologue_test "sts_halfword" { {r13 8} {r15 0} } |
| prologue_test "st_byte" { {r13 8} {r15 0} } |
| prologue_test "sts_byte" { {r13 8} {r15 0} } |
| prologue_test "sts_byte_sp" { {r13 8} {r15 0} } |
| prologue_test "st_double" { {r14 16} {r15 20} {r18 8} {r19 12}} |
| prologue_test "r_relative_store" { {r13 8} {r14 4} {r15 0} } |
| prologue_test "r_relative_sub_store" { {r13 8} {r14 4} {r15 0} } |
| prologue_test "r_relative_store_st_s" { {r13 8} {r14 0} {r15 4} } |
| prologue_test "r_relative_store_unknown" { {r13 8} } |
| prologue_test "st_s_r0gp" { {r13 8} } |
| prologue_test "push_s_prologue" { {r0 28} {r1 16} {r2 4} {r3 24} {r12 32} \ |
| {r13 20} {r14 12} {r15 8} {blink 0}} |
| prologue_test "sub_s_cbu3" { {r13 4} {r14 0} } |
| prologue_test "sub_s_bbc" { {r1 4} {r13 12} {r14 0} } |
| prologue_test "sub_s_bbu5" { {r13 8} {r14 0} } |
| prologue_test "sub_0bc" { {r13 4} {r14 0} } |
| prologue_test "sub_alimmb" { {r13 4} {r14 0} } |
| prologue_test "sub_s_ne_bbb" { {r13 0} } |
| prologue_test "mov_limm" { {r13 4} {r14 0} } |
| prologue_test "mov0c_limm" { {r13 4} {r14 0} } |
| prologue_test "mov_s_hs3" { {r13 4} {r14 0} } |
| prologue_test "mov_s_bu8" { {r13 4} {r14 0} } |
| prologue_test "mov_s_ne_bh" { {r13 0} } |
| prologue_test "unstored_reg" { {r13 0} {r14 4} } |
| prologue_test "double_store" { {r14 0} } |
| |
| # alloca() tests |
| gdb_breakpoint alloca_inner temporary |
| gdb_continue_to_breakpoint alloca_inner |
| gdb_test "backtrace 3" \ |
| "#0\[ \t\]*$hex in alloca_inner .*\r\n#1\[ \t\]*$hex in alloca_outer .*\r\n#2\[ \t\]*$hex in main.*" \ |
| "backtrace in alloca_inner" |
| set regs [saved_regs_to_str {r13 r14} alloca_inner] |
| gdb_test "info frame 0" ".*Saved registers:$regs" \ |
| "saved registers in alloca_inner" |
| set regs [saved_regs_to_str {fp blink} alloca_inner] |
| gdb_test "info frame 1" ".*Saved registers:$regs" \ |
| "saved registers in alloca_outer" |
| |