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Author SHA1 Message Date
Christophe Lyon ae1152e5a0 [ARM/FDPIC v6 11/24] [ARM] FDPIC: Add support to unwind FDPIC signal frame 
2019-09-10  Christophe Lyon  <christophe.lyon@st.com>
	Mickaël Guêné <mickael.guene@st.com>

	libgcc/
	* unwind-arm-common.inc (ARM_SET_R7_RT_SIGRETURN)
	(THUMB2_SET_R7_RT_SIGRETURN, FDPIC_LDR_R12_WITH_FUNCDESC)
	(FDPIC_LDR_R9_WITH_GOT, FDPIC_LDR_PC_WITH_RESTORER)
	(FDPIC_FUNCDESC_OFFSET, ARM_NEW_RT_SIGFRAME_UCONTEXT)
	(ARM_UCONTEXT_SIGCONTEXT, ARM_SIGCONTEXT_R0, FDPIC_T2_LDR_R12_WITH_FUNCDESC)
	(FDPIC_T2_LDR_R9_WITH_GOT, FDPIC_T2_LDR_PC_WITH_RESTORER): New.
	(__gnu_personality_sigframe_fdpic): New.
	(get_eit_entry): Add FDPIC signal frame support.


Co-Authored-By: Mickaël Guêné <mickael.guene@st.com>

From-SVN: r275573
 2019-09-10 09:55:20 +02:00
Christophe Lyon 5d727a4b20 [ARM/FDPIC v6 06/24] [ARM] FDPIC: Add support for c++ exceptions 
The main difference with existing support is that function addresses
are function descriptor addresses instead. This means that all code
dealing with function pointers now has to cope with function
descriptors instead.

For the same reason, Linux kernel helpers can no longer be called by
dereferencing their address, so we implement wrappers that directly
call the kernel helpers.

When restoring a function address, we also have to restore the FDPIC
register value (r9).

2019-09-10  Christophe Lyon  <christophe.lyon@st.com>
	Mickaël Guêné <mickael.guene@st.com>

	gcc/
	* ginclude/unwind-arm-common.h (unwinder_cache): Add reserved5
	field.

	libgcc/
	* config/arm/linux-atomic.c (__kernel_cmpxchg): Add FDPIC support.
	(__kernel_dmb): Likewise.
	(__fdpic_cmpxchg): New function.
	(__fdpic_dmb): New function.
	* config/arm/unwind-arm.h (FDPIC_REGNUM): New define.
	(gnu_Unwind_Find_got): New function.
	(_Unwind_decode_typeinfo_ptr): Add FDPIC support.
	* unwind-arm-common.inc (UCB_PR_GOT): New.
	(funcdesc_t): New struct.
	(get_eit_entry): Add FDPIC support.
	(unwind_phase2): Likewise.
	(unwind_phase2_forced): Likewise.
	(__gnu_Unwind_RaiseException): Likewise.
	(__gnu_Unwind_Resume): Likewise.
	(__gnu_Unwind_Backtrace): Likewise.
	* unwind-pe.h (read_encoded_value_with_base): Likewise.

	libstdc++/
	* libsupc++/eh_personality.cc (get_ttype_entry): Add FDPIC
	support.


Co-Authored-By: Mickaël Guêné <mickael.guene@st.com>

From-SVN: r275568
 2019-09-10 09:47:49 +02:00
Jakub Jelinek a554497024 Update copyright years. 
From-SVN: r267494
 2019-01-01 13:31:55 +01:00
Jakub Jelinek 85ec4feb11 Update copyright years. 
From-SVN: r256169
 2018-01-03 11:03:58 +01:00
Jakub Jelinek cbe34bb5ed Update copyright years. 
From-SVN: r243994
 2017-01-01 13:07:43 +01:00
Jakub Jelinek 818ab71a41 Update copyright years. 
From-SVN: r232055
 2016-01-04 15:30:50 +01:00
Jakub Jelinek 5624e564d2 Update copyright years. 
From-SVN: r219188
 2015-01-05 13:33:28 +01:00
Richard Sandiford ac1dca3cab Update copyright years in libgcc/ 
From-SVN: r206295
 2014-01-02 22:25:22 +00:00
Richard Sandiford 5d5bf77569 Update copyright in libgcc. 
From-SVN: r195731
 2013-02-04 19:06:20 +00:00
Sergio Durigan Junior 6904889880 unwind-arm-common.inc: Include `tconfig.h', `tsystem.h' and `sys/sdt.h'. 
2011-12-20  Sergio Durigan Junior  <sergiodj@redhat.com>

	* unwind-arm-common.inc: Include `tconfig.h', `tsystem.h' and
	`sys/sdt.h'.
	(_Unwind_DebugHook): New function.
	(uw_restore_core_regs): New define.
	(unwind_phase2): Use uw_restore_core_regs instead of
	restore_core_regs.
	(unwind_phase2_forced): Likewise.
	(__gnu_Unwind_Resume): Likewise.

From-SVN: r182552
 2011-12-20 20:54:25 +00:00
Paul Brook 56dc349e1a * unwind-arm-common.inc: Handle ID3/4 unwinding data. 
From-SVN: r180313
 2011-10-21 21:00:11 +00:00
Paul Brook 1e874273f8 arm.h (ASM_PREFERRED_EH_DATA_FORMAT): Define. 
2011-09-13  Paul Brook  <paul@codesourcery.com>
 
	gcc/
	* config/arm/arm.h (ASM_PREFERRED_EH_DATA_FORMAT): Define.
	(ARM_TARGET2_DWARF_FORMAT): Provide default definition.
	* config/arm/linux-eabi.h (ARM_TARGET2_DWARF_FORMAT): Define.
	* config/arm/symbian.h (ARM_TARGET2_DWARF_FORMAT): Define.
	* config/arm/uclinux-eabi.h(ARM_TARGET2_DWARF_FORMAT): Define.
	* config/arm/t-bpabi (EXTRA_HEADERS): Add unwind-arm-common.h.
	* config/arm/t-symbian (EXTRA_HEADERS): Add unwind-arm-common.h.
	* config/c6x/c6x.c (c6x_output_file_unwind): Don't rely on dwarf2 code
	enabling unwind tables.
	(c6x_debug_unwind_info): New function.
	(TARGET_ARM_EABI_UNWINDER): Define.
	(TARGET_DEBUG_UNWIND_INFO): Define.
	* config/c6x/c6x.h (DWARF_FRAME_RETURN_COLUMN): Define.
	(TARGET_EXTRA_CFI_SECTION): Remove.
	* config/c6x/t-c6x-elf (EXTRA_HEADERS): Set.
	* ginclude/unwind-arm-common.h: New file.

	libgcc/
	* config.host (tic6x-*-*): Add c6x/t-c6x-elf.  Set unwind_header.
	* unwind-c.c (PERSONALITY_FUNCTION): Use UNWIND_POINTER_REG.
	* unwind-arm-common.inc: New file.
	* config/arm/unwind-arm.c: Use unwind-arm-common.inc.
	* config/arm/unwind-arm.h: Use unwind-arm-common.h.
	(_GLIBCXX_OVERRIDE_TTYPE_ENCODING): Define.
	* config/c6x/libunwind.S: New file.
	* config/c6x/pr-support.c: New file.
	* config/c6x/unwind-c6x.c: New file.
	* config/c6x/unwind-c6x.h: New file.
	* config/c6x/t-c6x-elf: New file.


	libstdc++-v3/
	* libsupc++/eh_arm.cc (__cxa_end_cleanup): Add C6X implementation.
	* libsupc++/eh_call.cc (__cxa_call_unexpected): Set rtti_base.
	* libsupc++/eh_personality.cc (NO_SIZE_OF_ENCODED_VALUE): Remove
	__ARM_EABI_UNWINDER__ check.
	(parse_lsda_header): Check _GLIBCXX_OVERRIDE_TTYPE_ENCODING.
	(get_ttype_entry): Use generic implementation on ARM EABI.
	(check_exception_spec): Use _Unwind_decode_typeinfo_ptr and
	UNWIND_STACK_REG.
	(PERSONALITY_FUNCTION): Set ttype_base.

From-SVN: r178808
 2011-09-13 12:48:33 +00:00