kc3-lang/libffi/src/powerpc/ffi_powerpc.h
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Hash : fa1040c1
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Date : 2014-11-10T09:42:31
GO closures for powerpc linux Plus .cfi async unwind info, rearrangement of ffi_call_linux64 and ffi_call_SYSV function params to avoid register copies, tweaks to trampolines. * src/powerpc/ffitarget.h (FFI_GO_CLOSURES): Define. * src/powerpc/ffi.c (ffi_call_int): New function with extra closure param, and args rearranged on ffi_call_linux64 and ffi_call_SYSV calls, extracted from .. (ffi_call): ..here. (ffi_call_go, ffi_prep_go_closure): New functions. * src/powerpc/ffi_linux64.c (ffi_prep_closure_loc_linux64): Make hidden. Only flush insn part of ELFv2 trampoline. Don't shuffle ELFv1 trampoline. (ffi_closure_helper_LINUX64): Replace closure param with cif, fun, user_data params. * src/powerpc/ffi_powerpc.h (ffi_go_closure_sysv): Declare. (ffi_go_closure_linux64): Declare. (ffi_call_SYSV, fi_call_LINUX64): Update. (ffi_prep_closure_loc_sysv, ffi_prep_closure_loc_linux64): Declare. (ffi_closure_helper_SYSV, ffi_closure_helper_LINUX64): Update. * src/powerpc/ffi_sysv.c (ASM_NEEDS_REGISTERS): Increase to 6. (ffi_prep_closure_loc_sysv): Use bcl in trampoline, put data words last, flush just the insn part. (ffi_closure_helper_SYSV): Replace closure param with cif, fun and user_data params. * src/powerpc/linux64.S (ffi_call_LINUX64): Replace hand-written .eh_frame with .cfi directives. Adjust for changed param order. Pass extra "closure" param to user function in static chain. Add .cfi directives to describe epilogue. Don't provide traceback table for ELFv2 or _CALL_LINUX. * src/powerpc/linux64_closure.S (ffi_closure_LINUX64): Replace hand-written .eh_frame with .cfi directives. Adjust for changed ffi_closure_helper_LINUX64 params. Add .cfi directives to describe epilogue. Don't provide traceback table for ELFv2 or _CALL_LINUX. (ffi_go_closure_linux64): New function. * src/powerpc/sysv.S: Remove redundant .globl ffi_prep_args_SYSV. (ffi_call_SYSV): Make hidden. Replace hand-written .eh_frame with .cfi directives. Adjust for changed params. Pass extra "closure" param to user function in static chain. Add .cfi directives to describe epilogue. * src/powerpc/ppc_closure.S (ffi_closure_SYSV): Make hidden. Replace hand-written .eh_frame with .cfi directives. Adjust for changed ffi_closure_helper_SYSV params. Add .cfi directives to describe epilogue. Don't just use nops in the dead __NO_FPRS__ epilogues. (ffi_go_closure_sysv): New function.
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src/powerpc/ffi_powerpc.h
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/* ----------------------------------------------------------------------- ffi_powerpc.h - Copyright (C) 2013 IBM Copyright (C) 2011 Anthony Green Copyright (C) 2011 Kyle Moffett Copyright (C) 2008 Red Hat, Inc Copyright (C) 2007, 2008 Free Software Foundation, Inc Copyright (c) 1998 Geoffrey Keating PowerPC Foreign Function Interface Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the ``Software''), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ----------------------------------------------------------------------- */ enum { /* The assembly depends on these exact flags. */ /* These go in cr7 */ FLAG_RETURNS_SMST = 1 << (31-31), /* Used for FFI_SYSV small structs. */ FLAG_RETURNS_NOTHING = 1 << (31-30), FLAG_RETURNS_FP = 1 << (31-29), FLAG_RETURNS_64BITS = 1 << (31-28), /* This goes in cr6 */ FLAG_RETURNS_128BITS = 1 << (31-27), FLAG_COMPAT = 1 << (31- 8), /* Not used by assembly */ /* These go in cr1 */ FLAG_ARG_NEEDS_COPY = 1 << (31- 7), /* Used by sysv code */ FLAG_ARG_NEEDS_PSAVE = FLAG_ARG_NEEDS_COPY, /* Used by linux64 code */ FLAG_FP_ARGUMENTS = 1 << (31- 6), /* cr1.eq; specified by ABI */ FLAG_4_GPR_ARGUMENTS = 1 << (31- 5), FLAG_RETVAL_REFERENCE = 1 << (31- 4) }; typedef union { float f; double d; } ffi_dblfl; void FFI_HIDDEN ffi_closure_SYSV (void); void FFI_HIDDEN ffi_go_closure_sysv (void); void FFI_HIDDEN ffi_call_SYSV(extended_cif *, void (*)(void), void *, unsigned, void *, int); void FFI_HIDDEN ffi_prep_types_sysv (ffi_abi); ffi_status FFI_HIDDEN ffi_prep_cif_sysv (ffi_cif *); ffi_status FFI_HIDDEN ffi_prep_closure_loc_sysv (ffi_closure *, ffi_cif *, void (*) (ffi_cif *, void *, void **, void *), void *, void *); int FFI_HIDDEN ffi_closure_helper_SYSV (ffi_cif *, void (*) (ffi_cif *, void *, void **, void *), void *, void *, unsigned long *, ffi_dblfl *, unsigned long *); void FFI_HIDDEN ffi_call_LINUX64(extended_cif *, void (*) (void), void *, unsigned long, void *, long); void FFI_HIDDEN ffi_closure_LINUX64 (void); void FFI_HIDDEN ffi_go_closure_linux64 (void); void FFI_HIDDEN ffi_prep_types_linux64 (ffi_abi); ffi_status FFI_HIDDEN ffi_prep_cif_linux64 (ffi_cif *); ffi_status FFI_HIDDEN ffi_prep_cif_linux64_var (ffi_cif *, unsigned int, unsigned int); void FFI_HIDDEN ffi_prep_args64 (extended_cif *, unsigned long *const); ffi_status FFI_HIDDEN ffi_prep_closure_loc_linux64 (ffi_closure *, ffi_cif *, void (*) (ffi_cif *, void *, void **, void *), void *, void *); int FFI_HIDDEN ffi_closure_helper_LINUX64 (ffi_cif *, void (*) (ffi_cif *, void *, void **, void *), void *, void *, unsigned long *, ffi_dblfl *);