diff options
Diffstat (limited to 'libdw/cfi.c')
| -rw-r--r-- | libdw/cfi.c | 42 |
1 files changed, 27 insertions, 15 deletions
diff --git a/libdw/cfi.c b/libdw/cfi.c index 341e055b..a73fb03f 100644 --- a/libdw/cfi.c +++ b/libdw/cfi.c @@ -229,6 +229,7 @@ execute_cfi (Dwarf_CFI *cache, case DW_CFA_offset_extended: get_uleb128 (operand, program, end); cfi_assert (program < end); + FALLTHROUGH; case DW_CFA_offset + 0 ... DW_CFA_offset + CFI_PRIMARY_MAX: get_uleb128 (offset, program, end); offset *= cie->data_alignment_factor; @@ -349,24 +350,35 @@ execute_cfi (Dwarf_CFI *cache, case DW_CFA_nop: continue; - case DW_CFA_GNU_window_save: - /* This is magic shorthand used only by SPARC. It's equivalent - to a bunch of DW_CFA_register and DW_CFA_offset operations. */ - if (unlikely (! enough_registers (31, &fs, &result))) - goto out; - for (regno = 8; regno < 16; ++regno) + case DW_CFA_GNU_window_save: /* DW_CFA_AARCH64_negate_ra_state */ + if (cache->e_machine == EM_AARCH64) { - /* Find each %oN in %iN. */ - fs->regs[regno].rule = reg_register; - fs->regs[regno].value = regno + 16; + /* Toggles the return address state, indicating whether + the return address is encrypted or not on + aarch64. XXX not handled yet. */ } - unsigned int address_size = (cache->e_ident[EI_CLASS] == ELFCLASS32 - ? 4 : 8); - for (; regno < 32; ++regno) + else { - /* Find %l0..%l7 and %i0..%i7 in a block at the CFA. */ - fs->regs[regno].rule = reg_offset; - fs->regs[regno].value = (regno - 16) * address_size; + /* This is magic shorthand used only by SPARC. It's + equivalent to a bunch of DW_CFA_register and + DW_CFA_offset operations. */ + if (unlikely (! enough_registers (31, &fs, &result))) + goto out; + for (regno = 8; regno < 16; ++regno) + { + /* Find each %oN in %iN. */ + fs->regs[regno].rule = reg_register; + fs->regs[regno].value = regno + 16; + } + unsigned int address_size; + address_size = (cache->e_ident[EI_CLASS] == ELFCLASS32 + ? 4 : 8); + for (; regno < 32; ++regno) + { + /* Find %l0..%l7 and %i0..%i7 in a block at the CFA. */ + fs->regs[regno].rule = reg_offset; + fs->regs[regno].value = (regno - 16) * address_size; + } } continue; |