diff options
Diffstat (limited to 'binutils/dwarf.c')
| -rw-r--r-- | binutils/dwarf.c | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/binutils/dwarf.c b/binutils/dwarf.c index 9f1baea..03e0117 100644 --- a/binutils/dwarf.c +++ b/binutils/dwarf.c @@ -4326,6 +4326,16 @@ display_debug_abbrev (struct dwarf_section *section, return 1; } +/* Return true when ADDR is the maximum address, when addresses are + POINTER_SIZE bytes long. */ + +static bfd_boolean +is_max_address (dwarf_vma addr, unsigned int pointer_size) +{ + dwarf_vma mask = ~(~(dwarf_vma) 1 << (pointer_size * 8 - 1)); + return ((addr & mask) == mask); +} + /* Display a location list from a normal (ie, non-dwo) .debug_loc section. */ static void @@ -4380,10 +4390,6 @@ display_loc_list (struct dwarf_section *section, printf (" %8.8lx ", off); - /* Note: we use sign extension here in order to be sure that we can detect - the -1 escape value. Sign extension into the top 32 bits of a 32-bit - address will not affect the values that we display since we always show - hex values, and always the bottom 32-bits. */ SAFE_BYTE_GET_AND_INC (begin, start, pointer_size, section_end); SAFE_BYTE_GET_AND_INC (end, start, pointer_size, section_end); @@ -4404,7 +4410,8 @@ display_loc_list (struct dwarf_section *section, } /* Check base address specifiers. */ - if (begin == (dwarf_vma) -1 && end != (dwarf_vma) -1) + if (is_max_address (begin, pointer_size) + && !is_max_address (end, pointer_size)) { base_address = end; print_dwarf_vma (begin, pointer_size); @@ -5202,11 +5209,6 @@ display_debug_ranges (struct dwarf_section *section, dwarf_vma begin; dwarf_vma end; - /* Note: we use sign extension here in order to be sure that - we can detect the -1 escape value. Sign extension into the - top 32 bits of a 32-bit address will not affect the values - that we display since we always show hex values, and always - the bottom 32-bits. */ SAFE_BYTE_GET_AND_INC (begin, start, pointer_size, finish); if (start >= finish) break; @@ -5221,7 +5223,8 @@ display_debug_ranges (struct dwarf_section *section, } /* Check base address specifiers. */ - if (begin == (dwarf_vma) -1 && end != (dwarf_vma) -1) + if (is_max_address (begin, pointer_size) + && !is_max_address (end, pointer_size)) { base_address = end; print_dwarf_vma (begin, pointer_size); |