binutils-gdb

Tree: 725a19bfd1

Author	SHA1	Message	Date
Indu Bhagat	725a19bfd1	sframe: fix the defined SFRAME_FRE_TYPE__LIMIT constants An earlier commit `3f107464` defined the SFRAME_FRE_TYPE__LIMIT constants. These constants are used (by gas and libsframe) to pick an SFrame FRE type based on the function size. Those constants, however, were buggy, causing the generated SFrame sections to be bloated as SFRAME_FRE_TYPE_ADDR2/SFRAME_FRE_TYPE_ADDR4 got chosen more often than necessary. gas/ * sframe-opt.c (sframe_estimate_size_before_relax): Use typecast. (sframe_convert_frag): Likewise. libsframe/ * sframe.c (sframe_calc_fre_type): Use a more appropriate type for argument. Adjust the check for SFRAME_FRE_TYPE_ADDR4_LIMIT to keep it warning-free but meaningful. include/ * sframe-api.h (sframe_calc_fre_type): Use a more appropriate type for the argument. * sframe.h (SFRAME_FRE_TYPE_ADDR1_LIMIT): Correct the constant. (SFRAME_FRE_TYPE_ADDR2_LIMIT): Likewise. (SFRAME_FRE_TYPE_ADDR4_LIMIT): Likewise.	3 years ago
Alan Modra	d87bef3a7b	Update year range in copyright notice of binutils files The newer update-copyright.py fixes file encoding too, removing cr/lf on binutils/bfdtest2.c and ld/testsuite/ld-cygwin/exe-export.exp, and embedded cr in binutils/testsuite/binutils-all/ar.exp string match.	3 years ago
Indu Bhagat	41eed6e187	sframe.h: add support for .cfi_b_key_frame ARM 8.3 provides five separate keys that can be used to authenticate pointers. There are two key for executable (instruction) pointers. The enum pointer_auth_key in gas/config/tc-aarch64.h currently holds two keys: enum pointer_auth_key { AARCH64_PAUTH_KEY_A, AARCH64_PAUTH_KEY_B }; Analogous to the above, in SFrame format V1, a bit is reserved in the SFrame FDE to indicate which key is used for signing the frame's return addresses: - SFRAME_AARCH64_PAUTH_KEY_A has a value of 0 - SFRAME_AARCH64_PAUTH_KEY_B has a value of 1 Note that the information in this bit will always be used along with the mangled_ra_p bit, the latter indicates whether the return addresses are mangled/contain PAC auth bits. include/ChangeLog: * sframe.h (SFRAME_AARCH64_PAUTH_KEY_A): New definition. (SFRAME_AARCH64_PAUTH_KEY_B): Likewise. (SFRAME_V1_FUNC_INFO): Adjust to accommodate pauth_key. (SFRAME_V1_FUNC_PAUTH_KEY): New macro. (SFRAME_V1_FUNC_INFO_UPDATE_PAUTH_KEY): Likewise.	3 years ago
Indu Bhagat	4604c72941	sframe.h: add support for .cfi_negate_ra_state Use the last remaining bit in the 'SFrame FRE info' word to store whether the RA is signed/unsigned with PAC authorization code: this bit is named as the "mangled RA" bit. This bit is still unused for x86-64. The behaviour of the mangled-RA info bit in SFrame format closely follows the behaviour of DW_CFA_AARCH64_negate_ra_state in DWARF. During unwinding, whenever an SFrame FRE with non-zero "mangled RA" bit is encountered, it means the upper bits of the return address contain Pointer Authentication code. The unwinder, hence, must use appropriate means to restore LR correctly in such cases. include/ChangeLog: * sframe.h (SFRAME_V1_FRE_INFO_UPDATE_MANGLED_RA_P): New macro. (SFRAME_V1_FRE_MANGLED_RA_P): Likewise.	3 years ago
Indu Bhagat	3f107464e3	sframe: gas: libsframe: define constants and remove magic numbers Define constants in sframe.h for the various limits associated with the range of offsets that can be encoded in the start address of an SFrame FRE. E.g., sframe_frame_row_entry_addr1 is used when start address offset can be encoded as 1-byte unsigned value. Update the code in gas to use these defined constants as it checks for these limits, and remove the usage of magic numbers. ChangeLog: * gas/sframe-opt.c (sframe_estimate_size_before_relax): (sframe_convert_frag): Do not use magic numbers. * libsframe/sframe.c (sframe_calc_fre_type): Likewise. include/ChangeLog: * sframe.h (SFRAME_FRE_TYPE_ADDR1_LIMIT): New constant. (SFRAME_FRE_TYPE_ADDR2_LIMIT): Likewise. (SFRAME_FRE_TYPE_ADDR4_LIMIT): Likewise.	3 years ago
Indu Bhagat	70cfae61f4	sframe.h: make some macros more precise include/ChangeLog: * sframe.h (SFRAME_V1_FUNC_INFO): Use specific bits only. (SFRAME_V1_FRE_INFO): Likewise.	3 years ago
Indu Bhagat	972d23ddbd	sframe.h: Add SFrame format definition The header sframe.h defines the SFrame format. The SFrame format is the Simple Frame format. It can be used to represent the minimal necessary unwind information required for backtracing. The current version supports AMD64 and AARCH64. More details of the SFrame format are included in the documentation of the header file in this patch. include/ChangeLog: * sframe.h: New file.	3 years ago

7 Commits (725a19bfd142c845bf76ae28f6289972fd1cf5db)