LCOV - code coverage report
Current view: top level - backends - riscv_cfi.c (source / functions) Hit Total Coverage
Test: elfutils-0.178 Lines: 0 7 0.0 %
Date: 2019-11-26 23:55:16 Functions: 0 1 0.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /* RISC-V ABI-specified defaults for DWARF CFI.
       2             :    This file is part of elfutils.
       3             : 
       4             :    This file is free software; you can redistribute it and/or modify
       5             :    it under the terms of either
       6             : 
       7             :      * the GNU Lesser General Public License as published by the Free
       8             :        Software Foundation; either version 3 of the License, or (at
       9             :        your option) any later version
      10             : 
      11             :    or
      12             : 
      13             :      * the GNU General Public License as published by the Free
      14             :        Software Foundation; either version 2 of the License, or (at
      15             :        your option) any later version
      16             : 
      17             :    or both in parallel, as here.
      18             : 
      19             :    elfutils is distributed in the hope that it will be useful, but
      20             :    WITHOUT ANY WARRANTY; without even the implied warranty of
      21             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      22             :    General Public License for more details.
      23             : 
      24             :    You should have received copies of the GNU General Public License and
      25             :    the GNU Lesser General Public License along with this program.  If
      26             :    not, see <http://www.gnu.org/licenses/>.  */
      27             : 
      28             : #ifdef HAVE_CONFIG_H
      29             : # include <config.h>
      30             : #endif
      31             : 
      32             : #include <dwarf.h>
      33             : 
      34             : #define BACKEND riscv64_
      35             : #include "libebl_CPU.h"
      36             : 
      37             : 
      38             : int
      39           0 : riscv_abi_cfi (Ebl *ebl __attribute__ ((unused)), Dwarf_CIE *abi_info)
      40             : {
      41           0 :   static const uint8_t abi_cfi[] =
      42             :     {
      43             :       /* The initial Canonical Frame Address is the value of the
      44             :          Stack Pointer (r2) as setup in the previous frame. */
      45             :       DW_CFA_def_cfa, ULEB128_7 (2), ULEB128_7 (0),
      46             : 
      47             :       /* The Stack Pointer (r2) is restored from CFA address by default.  */
      48             :       DW_CFA_val_offset, ULEB128_7 (2), ULEB128_7 (0),
      49             : 
      50             : #define SV(n) DW_CFA_same_value, ULEB128_7 (n)
      51             :       /* The return address register contains the return address setup by
      52             :          caller.  */
      53             :       SV (1),
      54             : 
      55             :       /* Callee-saved registers s0-s11, fs0-fs11.  */
      56             :       SV(8), SV (9), SV (18), SV (19), SV (20), SV (21),
      57             :       SV (22), SV (23), SV (24), SV (25), SV (26), SV (27),
      58             : 
      59             :       SV (40), SV (41),  SV (50),  SV (51), SV (52),  SV (53),
      60             :       SV (54), SV (55),  SV (56),  SV (57), SV (58),  SV (59),
      61             : #undef SV
      62             : 
      63             :       /* XXX Note: registers intentionally unused by the program,
      64             :          for example as a consequence of the procedure call standard
      65             :          should be initialized as if by DW_CFA_same_value.  */
      66             :     };
      67             : 
      68           0 :   abi_info->initial_instructions = abi_cfi;
      69           0 :   abi_info->initial_instructions_end = &abi_cfi[sizeof abi_cfi];
      70           0 :   abi_info->data_alignment_factor = -4;
      71             : 
      72           0 :   abi_info->return_address_register = 1; /* ra.  */
      73             : 
      74           0 :   return 0;
      75             : }

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