https://gcc.gnu.org/g:6999c98dd6caee5a1c37b4e203168281f1f568af
commit r17-533-g6999c98dd6caee5a1c37b4e203168281f1f568af Author: John David Anglin <[email protected]> Date: Fri May 15 11:31:06 2026 -0400 hppa64: Use DW_EH_PE_aligned encoding on 64-bit HP-UX In testing with GNU ld, I noticed that the HP-UX dynamic linker doesn't support unaligned DW_EH_PE_absptr encodings. 2026-05-15 John David Anglin <[email protected]> gcc/ChangeLog: * config/pa/pa.h (ASM_PREFERRED_EH_DATA_FORMAT): Use DW_EH_PE_aligned encoding on 64-bit HP-UX. Diff: --- gcc/config/pa/pa.h | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) diff --git a/gcc/config/pa/pa.h b/gcc/config/pa/pa.h index d9b8515bb49e..f62361f0d692 100644 --- a/gcc/config/pa/pa.h +++ b/gcc/config/pa/pa.h @@ -440,20 +440,21 @@ extern rtx hppa_pic_save_rtx (void); the SOM linker can do unaligned fixups for absolute pointers. We also need aligned pointers for global and function pointers. - Although the HP-UX 64-bit ELF linker can handle unaligned pc-relative - fixups, the runtime doesn't have a consistent relationship between - text and data for dynamically loaded objects. Thus, it's not possible - to use pc-relative encoding for pointers on this target. It may be - possible to use segment relative encodings but GAS doesn't currently - have a mechanism to generate these encodings. For other targets, we - use pc-relative encoding for pointers. If the pointer might require - dynamic relocation, we make it indirect. */ + The HP-UX 64-bit dynamic linker can't handle unaligned DW_EH_PE_absptr + encodings. Although the HP-UX 64-bit ELF linker can handle unaligned + pc-relative encodings, the runtime doesn't have a consistent relationship + between text and data for dynamically loaded objects. Thus, it's not + possible to use pc-relative encoding for pointers on this target. It + may be possible to use segment relative encodings. + + For other targets, we use pc-relative encoding for pointers. If the + pointer might require dynamic relocation, we make it indirect. */ #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \ (TARGET_GAS && !TARGET_HPUX \ ? (DW_EH_PE_pcrel \ | ((GLOBAL) || (CODE) == 2 ? DW_EH_PE_indirect : 0) \ | (TARGET_64BIT ? DW_EH_PE_sdata8 : DW_EH_PE_sdata4)) \ - : (!TARGET_GAS || (GLOBAL) || (CODE) == 2 \ + : (TARGET_64BIT || !TARGET_GAS || (GLOBAL) || (CODE) == 2 \ ? DW_EH_PE_aligned : DW_EH_PE_absptr)) /* Handle special EH pointer encodings. Absolute, pc-relative, and
