mirror of git://gcc.gnu.org/git/gcc.git
590e26360c
call0 is an ABI that doesn't use register windows.
2015-03-03 Max Filippov <jcmvbkbc@gmail.com>
gcc/
* config/xtensa/constraints.md ("a" constraint): Include stack
pointer in case of call0 ABI.
("q" constraint): Make empty in case of call0 ABI.
("D" constraint): Include stack pointer in case of call0 ABI.
* config/xtensa/xtensa-protos.h (xtensa_set_return_address,
xtensa_expand_epilogue, xtensa_regno_to_class): Add new function
prototypes.
* config/xtensa/xtensa.c (xtensa_callee_save_size): New
variable.
(xtensa_regno_to_class): Make it a local variable in the
function xtensa_regno_to_class.
(xtensa_function_epilogue, TARGET_ASM_FUNCTION_EPILOGUE): Remove
macro, function prototype and implementation.
(reg_nonleaf_alloc_order): Make it a local variable in the
function order_regs_for_local_alloc.
(xtensa_conditional_register_usage): New function.
(TARGET_CONDITIONAL_REGISTER_USAGE): Define macro.
(xtensa_valid_move): Allow direct moves to stack pointer
register in call0 ABI.
(xtensa_setup_frame_addresses): Only spill register windows in
windowed ABI.
(xtensa_emit_call): Emit call(x)8 or call(x)0 in windowed and
call0 ABI respectively.
(xtensa_function_arg_1): Only mark a7 register for copying in
windowed ABI.
(xtensa_call_save_reg): New function.
(compute_frame_size): Add space for callee saved register
storage to the frame size in call0 ABI.
(xtensa_expand_prologue): Generate code to set up stack frame
and save callee-saved registers in call0 ABI.
(xtensa_expand_epilogue): New function.
(xtensa_set_return_address): New function.
(xtensa_return_addr): Calculate return address in call0 ABI.
(xtensa_builtin_saveregs): Only mark a7 register for copying and
emit copying code in windowed ABI.
(order_regs_for_local_alloc): Add preferred register allocation
order for non-leaf function in call0 ABI.
(xtensa_static_chain): Add atatic chain passing for call0 ABI.
(xtensa_asm_trampoline_template): Add trampoline generation for
call0 ABI.
(xtensa_trampoline_init): Add trampoline initialization for
call0 ABI.
(xtensa_conditional_register_usage, xtensa_regno_to_class): New
functions.
* config/xtensa/xtensa.h (TARGET_WINDOWED_ABI): New macro.
(TARGET_CPU_CPP_BUILTINS): Add built-in define for call0 ABI.
(CALL_USED_REGISTERS): Modify to encode both windowed and call0
ABI call-used registers.
(HARD_FRAME_POINTER_REGNUM): Add frame pointer for call0 ABI.
(INCOMING_REGNO, OUTGOING_REGNO): Use argument unchanged in
call0 ABI.
(REG_CLASS_CONTENTS): Include all registers into the preferred
reload registers set, adjust the set in the
xtensa_conditional_register_usage.
(xtensa_regno_to_class): Drop variable declaration.
(REGNO_REG_CLASS): Redefine to use xtensa_regno_to_class
function.
(WINDOW_SIZE): Define as 8 or 0 for windowed and call0 ABI
respectively.
(FUNCTION_PROFILER): Add _mcount call for call0 ABI.
(TRAMPOLINE_SIZE): Define trampoline size for call0 ABI.
(RETURN_ADDR_IN_PREVIOUS_FRAME): Define to 0 in call0 ABI.
(ASM_OUTPUT_POOL_PROLOGUE): Always generate literal pool
location in call0 ABI.
(EH_RETURN_STACKADJ_RTX): New definition, use a10 for passing
stack adjustment size when handling exception.
(CRT_CALL_STATIC_FUNCTION): Add definition for call0 ABI.
* config/xtensa/xtensa.md (A9_REG, UNSPECV_BLOCKAGE): New
definitions.
("return" pattern): Generate ret.n/ret in call0 ABI.
("epilogue" pattern): Expand epilogue.
("nonlocal_goto" pattern): Use default in call0 ABI.
("eh_return" pattern): Move implementation to eh_set_a0_windowed,
emit eh_set_a0_* depending on ABI.
("eh_set_a0_windowed" pattern): Former eh_return pattern.
("eh_set_a0_call0", "blockage"): New patterns.
libgcc/
* config/xtensa/lib2funcs.S (__xtensa_libgcc_window_spill,
__xtensa_nonlocal_goto): Don't compile for call0 ABI.
(__xtensa_sync_caches): Only use entry and retw in windowed ABI,
use ret in call0 ABI.
* config/xtensa/t-windowed: New file.
* libgcc/config/xtensa/t-xtensa (LIB2ADDEH): Move to t-windowed.
* libgcc/configure: Regenerated.
* libgcc/configure.ac: Check if xtensa target is configured for
windowed ABI and thus needs to use custom unwind code.
From-SVN: r221158
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| .. | ||
| config | ||
| soft-fp | ||
| ChangeLog | ||
| Makefile.in | ||
| config.host | ||
| config.in | ||
| configure | ||
| configure.ac | ||
| crtstuff.c | ||
| dfp-bit.c | ||
| dfp-bit.h | ||
| divmod.c | ||
| empty.mk | ||
| emutls.c | ||
| enable-execute-stack-empty.c | ||
| enable-execute-stack-mprotect.c | ||
| find-symver.awk | ||
| fixed-bit.c | ||
| fixed-bit.h | ||
| fixed-obj.mk | ||
| floatunsidf.c | ||
| floatunsisf.c | ||
| floatunsitf.c | ||
| floatunsixf.c | ||
| fp-bit.c | ||
| fp-bit.h | ||
| gbl-ctors.h | ||
| gen-fixed.sh | ||
| generic-morestack-thread.c | ||
| generic-morestack.c | ||
| generic-morestack.h | ||
| gstdint.h | ||
| gthr-posix.h | ||
| gthr-single.h | ||
| gthr.h | ||
| libgcc-std.ver.in | ||
| libgcc2.c | ||
| libgcc2.h | ||
| libgcov-driver-system.c | ||
| libgcov-driver.c | ||
| libgcov-interface.c | ||
| libgcov-merge.c | ||
| libgcov-profiler.c | ||
| libgcov-util.c | ||
| libgcov.h | ||
| memcmp.c | ||
| memcpy.c | ||
| memmove.c | ||
| memset.c | ||
| mkheader.sh | ||
| mkmap-flat.awk | ||
| mkmap-symver.awk | ||
| offloadstuff.c | ||
| shared-object.mk | ||
| siditi-object.mk | ||
| static-object.mk | ||
| sync.c | ||
| udivmod.c | ||
| udivmodsi4.c | ||
| unwind-arm-common.inc | ||
| unwind-c.c | ||
| unwind-compat.c | ||
| unwind-compat.h | ||
| unwind-dw2-fde-compat.c | ||
| unwind-dw2-fde-dip.c | ||
| unwind-dw2-fde.c | ||
| unwind-dw2-fde.h | ||
| unwind-dw2.c | ||
| unwind-dw2.h | ||
| unwind-generic.h | ||
| unwind-pe.h | ||
| unwind-seh.c | ||
| unwind-sjlj.c | ||
| unwind.inc | ||
| vtv_end.c | ||
| vtv_end_preinit.c | ||
| vtv_start.c | ||
| vtv_start_preinit.c | ||