diff options
author | Elliott Hughes <enh@google.com> | 2015-02-24 19:29:20 +0000 |
---|---|---|
committer | Android Git Automerger <android-git-automerger@android.com> | 2015-02-24 19:29:20 +0000 |
commit | 7401a30e8b3a0de25d7e8a6b635fc33f45894118 (patch) | |
tree | a63e40b5dd9927bd04ec7427c8797975c2a71f85 /src/backends/aarch64_cfi.c | |
parent | 2c9b0ee07430feec65a3934aeab4d5e66fdbaabf (diff) | |
parent | 36e62782f45c6b004d370a79fbc895e0f321181d (diff) | |
download | android_external_elfutils-7401a30e8b3a0de25d7e8a6b635fc33f45894118.tar.gz android_external_elfutils-7401a30e8b3a0de25d7e8a6b635fc33f45894118.tar.bz2 android_external_elfutils-7401a30e8b3a0de25d7e8a6b635fc33f45894118.zip |
am 36e62782: Merge "Upgrade to elfutils 0.161."
* commit '36e62782f45c6b004d370a79fbc895e0f321181d':
Upgrade to elfutils 0.161.
Diffstat (limited to 'src/backends/aarch64_cfi.c')
-rw-r--r-- | src/backends/aarch64_cfi.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/src/backends/aarch64_cfi.c b/src/backends/aarch64_cfi.c new file mode 100644 index 00000000..acbb9b69 --- /dev/null +++ b/src/backends/aarch64_cfi.c @@ -0,0 +1,82 @@ +/* arm ABI-specified defaults for DWARF CFI. + Copyright (C) 2013 Red Hat, Inc. + This file is part of elfutils. + + This file is free software; you can redistribute it and/or modify + it under the terms of either + + * the GNU Lesser General Public License as published by the Free + Software Foundation; either version 3 of the License, or (at + your option) any later version + + or + + * the GNU General Public License as published by the Free + Software Foundation; either version 2 of the License, or (at + your option) any later version + + or both in parallel, as here. + + elfutils 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 copies of the GNU General Public License and + the GNU Lesser General Public License along with this program. If + not, see <http://www.gnu.org/licenses/>. */ + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif + +#include <dwarf.h> + +#define BACKEND aarch64_ +#include "libebl_CPU.h" + + +/* ABI-specified state of DWARF CFI based on: + + "DWARF for the ARM 64 bit architecture (AArch64) 1.0" +http://infocenter.arm.com/help/topic/com.arm.doc.ihi0057b/IHI0057B_aadwarf64.pdf + + "Procedure Call Standard for the ARM 64 bit Architecture 1.0" +http://infocenter.arm.com/help/topic/com.arm.doc.ihi0055b/IHI0055B_aapcs64.pdf +*/ + +int +aarch64_abi_cfi (Ebl *ebl __attribute__ ((unused)), Dwarf_CIE *abi_info) +{ + static const uint8_t abi_cfi[] = + { + /* The initial Canonical Frame Address is the value of the + Stack Pointer (r31) as setup in the previous frame. */ + DW_CFA_def_cfa, ULEB128_7 (30), ULEB128_7 (0), + +#define SV(n) DW_CFA_same_value, ULEB128_7 (n) + /* Callee-saved regs r19-r28. */ + SV (19), SV (20), SV (21), SV (22), SV (23), + SV (24), SV (25), SV (26), SV (27), SV (28), + + /* The Frame Pointer (FP, r29) and Link Register (LR, r30). */ + SV (29), SV (30), + + /* Callee-saved fpregs v8-v15. v0 == 64. */ + SV (72), SV (73), SV (74), SV (75), + SV (76), SV (77), SV (78), SV (79), +#undef SV + + /* XXX Note: registers intentionally unused by the program, + for example as a consequence of the procedure call standard + should be initialized as if by DW_CFA_same_value. */ + }; + + abi_info->initial_instructions = abi_cfi; + abi_info->initial_instructions_end = &abi_cfi[sizeof abi_cfi]; + abi_info->data_alignment_factor = -4; + + abi_info->return_address_register = 30; /* lr. */ + + return 0; +} |