diff options
Diffstat (limited to 'libffi/src/alpha')
-rw-r--r-- | libffi/src/alpha/ffi.c | 284 | ||||
-rw-r--r-- | libffi/src/alpha/ffitarget.h | 48 | ||||
-rw-r--r-- | libffi/src/alpha/osf.S | 387 |
3 files changed, 719 insertions, 0 deletions
diff --git a/libffi/src/alpha/ffi.c b/libffi/src/alpha/ffi.c new file mode 100644 index 000000000..8d6b2ba27 --- /dev/null +++ b/libffi/src/alpha/ffi.c @@ -0,0 +1,284 @@ +/* ----------------------------------------------------------------------- + ffi.c - Copyright (c) 1998, 2001, 2007, 2008 Red Hat, Inc. + + Alpha 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 AUTHORS OR COPYRIGHT + HOLDERS 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. + ----------------------------------------------------------------------- */ + +#include <ffi.h> +#include <ffi_common.h> +#include <stdlib.h> + +/* Force FFI_TYPE_LONGDOUBLE to be different than FFI_TYPE_DOUBLE; + all further uses in this file will refer to the 128-bit type. */ +#if defined(__LONG_DOUBLE_128__) +# if FFI_TYPE_LONGDOUBLE != 4 +# error FFI_TYPE_LONGDOUBLE out of date +# endif +#else +# undef FFI_TYPE_LONGDOUBLE +# define FFI_TYPE_LONGDOUBLE 4 +#endif + +extern void ffi_call_osf(void *, unsigned long, unsigned, void *, void (*)(void)) + FFI_HIDDEN; +extern void ffi_closure_osf(void) FFI_HIDDEN; + + +ffi_status +ffi_prep_cif_machdep(ffi_cif *cif) +{ + /* Adjust cif->bytes to represent a minimum 6 words for the temporary + register argument loading area. */ + if (cif->bytes < 6*FFI_SIZEOF_ARG) + cif->bytes = 6*FFI_SIZEOF_ARG; + + /* Set the return type flag */ + switch (cif->rtype->type) + { + case FFI_TYPE_STRUCT: + case FFI_TYPE_FLOAT: + case FFI_TYPE_DOUBLE: + cif->flags = cif->rtype->type; + break; + + case FFI_TYPE_LONGDOUBLE: + /* 128-bit long double is returned in memory, like a struct. */ + cif->flags = FFI_TYPE_STRUCT; + break; + + default: + cif->flags = FFI_TYPE_INT; + break; + } + + return FFI_OK; +} + + +void +ffi_call(ffi_cif *cif, void (*fn)(void), void *rvalue, void **avalue) +{ + unsigned long *stack, *argp; + long i, avn; + ffi_type **arg_types; + + /* If the return value is a struct and we don't have a return + value address then we need to make one. */ + if (rvalue == NULL && cif->flags == FFI_TYPE_STRUCT) + rvalue = alloca(cif->rtype->size); + + /* Allocate the space for the arguments, plus 4 words of temp + space for ffi_call_osf. */ + argp = stack = alloca(cif->bytes + 4*FFI_SIZEOF_ARG); + + if (cif->flags == FFI_TYPE_STRUCT) + *(void **) argp++ = rvalue; + + i = 0; + avn = cif->nargs; + arg_types = cif->arg_types; + + while (i < avn) + { + size_t size = (*arg_types)->size; + + switch ((*arg_types)->type) + { + case FFI_TYPE_SINT8: + *(SINT64 *) argp = *(SINT8 *)(* avalue); + break; + + case FFI_TYPE_UINT8: + *(SINT64 *) argp = *(UINT8 *)(* avalue); + break; + + case FFI_TYPE_SINT16: + *(SINT64 *) argp = *(SINT16 *)(* avalue); + break; + + case FFI_TYPE_UINT16: + *(SINT64 *) argp = *(UINT16 *)(* avalue); + break; + + case FFI_TYPE_SINT32: + case FFI_TYPE_UINT32: + /* Note that unsigned 32-bit quantities are sign extended. */ + *(SINT64 *) argp = *(SINT32 *)(* avalue); + break; + + case FFI_TYPE_SINT64: + case FFI_TYPE_UINT64: + case FFI_TYPE_POINTER: + *(UINT64 *) argp = *(UINT64 *)(* avalue); + break; + + case FFI_TYPE_FLOAT: + if (argp - stack < 6) + { + /* Note the conversion -- all the fp regs are loaded as + doubles. The in-register format is the same. */ + *(double *) argp = *(float *)(* avalue); + } + else + *(float *) argp = *(float *)(* avalue); + break; + + case FFI_TYPE_DOUBLE: + *(double *) argp = *(double *)(* avalue); + break; + + case FFI_TYPE_LONGDOUBLE: + /* 128-bit long double is passed by reference. */ + *(long double **) argp = (long double *)(* avalue); + size = sizeof (long double *); + break; + + case FFI_TYPE_STRUCT: + memcpy(argp, *avalue, (*arg_types)->size); + break; + + default: + FFI_ASSERT(0); + } + + argp += ALIGN(size, FFI_SIZEOF_ARG) / FFI_SIZEOF_ARG; + i++, arg_types++, avalue++; + } + + ffi_call_osf(stack, cif->bytes, cif->flags, rvalue, fn); +} + + +ffi_status +ffi_prep_closure_loc (ffi_closure* closure, + ffi_cif* cif, + void (*fun)(ffi_cif*, void*, void**, void*), + void *user_data, + void *codeloc) +{ + unsigned int *tramp; + + tramp = (unsigned int *) &closure->tramp[0]; + tramp[0] = 0x47fb0401; /* mov $27,$1 */ + tramp[1] = 0xa77b0010; /* ldq $27,16($27) */ + tramp[2] = 0x6bfb0000; /* jmp $31,($27),0 */ + tramp[3] = 0x47ff041f; /* nop */ + *(void **) &tramp[4] = ffi_closure_osf; + + closure->cif = cif; + closure->fun = fun; + closure->user_data = user_data; + + /* Flush the Icache. + + Tru64 UNIX as doesn't understand the imb mnemonic, so use call_pal + instead, since both Compaq as and gas can handle it. + + 0x86 is PAL_imb in Tru64 UNIX <alpha/pal.h>. */ + asm volatile ("call_pal 0x86" : : : "memory"); + + return FFI_OK; +} + + +long FFI_HIDDEN +ffi_closure_osf_inner(ffi_closure *closure, void *rvalue, unsigned long *argp) +{ + ffi_cif *cif; + void **avalue; + ffi_type **arg_types; + long i, avn, argn; + + cif = closure->cif; + avalue = alloca(cif->nargs * sizeof(void *)); + + argn = 0; + + /* Copy the caller's structure return address to that the closure + returns the data directly to the caller. */ + if (cif->flags == FFI_TYPE_STRUCT) + { + rvalue = (void *) argp[0]; + argn = 1; + } + + i = 0; + avn = cif->nargs; + arg_types = cif->arg_types; + + /* Grab the addresses of the arguments from the stack frame. */ + while (i < avn) + { + size_t size = arg_types[i]->size; + + switch (arg_types[i]->type) + { + case FFI_TYPE_SINT8: + case FFI_TYPE_UINT8: + case FFI_TYPE_SINT16: + case FFI_TYPE_UINT16: + case FFI_TYPE_SINT32: + case FFI_TYPE_UINT32: + case FFI_TYPE_SINT64: + case FFI_TYPE_UINT64: + case FFI_TYPE_POINTER: + case FFI_TYPE_STRUCT: + avalue[i] = &argp[argn]; + break; + + case FFI_TYPE_FLOAT: + if (argn < 6) + { + /* Floats coming from registers need conversion from double + back to float format. */ + *(float *)&argp[argn - 6] = *(double *)&argp[argn - 6]; + avalue[i] = &argp[argn - 6]; + } + else + avalue[i] = &argp[argn]; + break; + + case FFI_TYPE_DOUBLE: + avalue[i] = &argp[argn - (argn < 6 ? 6 : 0)]; + break; + + case FFI_TYPE_LONGDOUBLE: + /* 128-bit long double is passed by reference. */ + avalue[i] = (long double *) argp[argn]; + size = sizeof (long double *); + break; + + default: + abort (); + } + + argn += ALIGN(size, FFI_SIZEOF_ARG) / FFI_SIZEOF_ARG; + i++; + } + + /* Invoke the closure. */ + closure->fun (cif, rvalue, avalue, closure->user_data); + + /* Tell ffi_closure_osf how to perform return type promotions. */ + return cif->rtype->type; +} diff --git a/libffi/src/alpha/ffitarget.h b/libffi/src/alpha/ffitarget.h new file mode 100644 index 000000000..7d06eb0bc --- /dev/null +++ b/libffi/src/alpha/ffitarget.h @@ -0,0 +1,48 @@ +/* -----------------------------------------------------------------*-C-*- + ffitarget.h - Copyright (c) 1996-2003 Red Hat, Inc. + Target configuration macros for Alpha. + + 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 AUTHORS OR COPYRIGHT + HOLDERS 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. + + ----------------------------------------------------------------------- */ + +#ifndef LIBFFI_TARGET_H +#define LIBFFI_TARGET_H + +#ifndef LIBFFI_ASM +typedef unsigned long ffi_arg; +typedef signed long ffi_sarg; + +typedef enum ffi_abi { + FFI_FIRST_ABI = 0, + FFI_OSF, + FFI_LAST_ABI, + FFI_DEFAULT_ABI = FFI_OSF +} ffi_abi; +#endif + +/* ---- Definitions for closures ----------------------------------------- */ + +#define FFI_CLOSURES 1 +#define FFI_TRAMPOLINE_SIZE 24 +#define FFI_NATIVE_RAW_API 0 + +#endif diff --git a/libffi/src/alpha/osf.S b/libffi/src/alpha/osf.S new file mode 100644 index 000000000..6b9f4dfa0 --- /dev/null +++ b/libffi/src/alpha/osf.S @@ -0,0 +1,387 @@ +/* ----------------------------------------------------------------------- + osf.S - Copyright (c) 1998, 2001, 2007, 2008, 2011 Red Hat + + Alpha/OSF 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 AUTHORS OR COPYRIGHT + HOLDERS 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. + ----------------------------------------------------------------------- */ + +#define LIBFFI_ASM +#include <fficonfig.h> +#include <ffi.h> + + .arch ev6 + .text + +/* ffi_call_osf (void *args, unsigned long bytes, unsigned flags, + void *raddr, void (*fnaddr)(void)); + + Bit o trickiness here -- ARGS+BYTES is the base of the stack frame + for this function. This has been allocated by ffi_call. We also + deallocate some of the stack that has been alloca'd. */ + + .align 3 + .globl ffi_call_osf + .ent ffi_call_osf + FFI_HIDDEN(ffi_call_osf) + +ffi_call_osf: + .frame $15, 32, $26, 0 + .mask 0x4008000, -32 +$LFB1: + addq $16,$17,$1 + mov $16, $30 + stq $26, 0($1) + stq $15, 8($1) + stq $18, 16($1) + mov $1, $15 +$LCFI1: + .prologue 0 + + stq $19, 24($1) + mov $20, $27 + + # Load up all of the (potential) argument registers. + ldq $16, 0($30) + ldt $f16, 0($30) + ldt $f17, 8($30) + ldq $17, 8($30) + ldt $f18, 16($30) + ldq $18, 16($30) + ldt $f19, 24($30) + ldq $19, 24($30) + ldt $f20, 32($30) + ldq $20, 32($30) + ldt $f21, 40($30) + ldq $21, 40($30) + + # Deallocate the register argument area. + lda $30, 48($30) + + jsr $26, ($27), 0 + ldgp $29, 0($26) + + # If the return value pointer is NULL, assume no return value. + ldq $19, 24($15) + ldq $18, 16($15) + ldq $26, 0($15) +$LCFI2: + beq $19, $noretval + + # Store the return value out in the proper type. + cmpeq $18, FFI_TYPE_INT, $1 + bne $1, $retint + cmpeq $18, FFI_TYPE_FLOAT, $2 + bne $2, $retfloat + cmpeq $18, FFI_TYPE_DOUBLE, $3 + bne $3, $retdouble + + .align 3 +$noretval: + ldq $15, 8($15) + ret + + .align 4 +$retint: + stq $0, 0($19) + nop + ldq $15, 8($15) + ret + + .align 4 +$retfloat: + sts $f0, 0($19) + nop + ldq $15, 8($15) + ret + + .align 4 +$retdouble: + stt $f0, 0($19) + nop + ldq $15, 8($15) + ret +$LFE1: + + .end ffi_call_osf + +/* ffi_closure_osf(...) + + Receives the closure argument in $1. */ + + .align 3 + .globl ffi_closure_osf + .ent ffi_closure_osf + FFI_HIDDEN(ffi_closure_osf) + +ffi_closure_osf: + .frame $30, 16*8, $26, 0 + .mask 0x4000000, -16*8 +$LFB2: + ldgp $29, 0($27) + subq $30, 16*8, $30 +$LCFI5: + stq $26, 0($30) +$LCFI6: + .prologue 1 + + # Store all of the potential argument registers in va_list format. + stt $f16, 4*8($30) + stt $f17, 5*8($30) + stt $f18, 6*8($30) + stt $f19, 7*8($30) + stt $f20, 8*8($30) + stt $f21, 9*8($30) + stq $16, 10*8($30) + stq $17, 11*8($30) + stq $18, 12*8($30) + stq $19, 13*8($30) + stq $20, 14*8($30) + stq $21, 15*8($30) + + # Call ffi_closure_osf_inner to do the bulk of the work. + mov $1, $16 + lda $17, 2*8($30) + lda $18, 10*8($30) + jsr $26, ffi_closure_osf_inner + ldgp $29, 0($26) + ldq $26, 0($30) + + # Load up the return value in the proper type. + lda $1, $load_table + s4addq $0, $1, $1 + ldl $1, 0($1) + addq $1, $29, $1 + jmp $31, ($1), $load_32 + + .align 4 +$load_none: + addq $30, 16*8, $30 + ret + + .align 4 +$load_float: + lds $f0, 16($30) + nop + addq $30, 16*8, $30 + ret + + .align 4 +$load_double: + ldt $f0, 16($30) + nop + addq $30, 16*8, $30 + ret + + .align 4 +$load_u8: +#ifdef __alpha_bwx__ + ldbu $0, 16($30) + nop +#else + ldq $0, 16($30) + and $0, 255, $0 +#endif + addq $30, 16*8, $30 + ret + + .align 4 +$load_s8: +#ifdef __alpha_bwx__ + ldbu $0, 16($30) + sextb $0, $0 +#else + ldq $0, 16($30) + sll $0, 56, $0 + sra $0, 56, $0 +#endif + addq $30, 16*8, $30 + ret + + .align 4 +$load_u16: +#ifdef __alpha_bwx__ + ldwu $0, 16($30) + nop +#else + ldq $0, 16($30) + zapnot $0, 3, $0 +#endif + addq $30, 16*8, $30 + ret + + .align 4 +$load_s16: +#ifdef __alpha_bwx__ + ldwu $0, 16($30) + sextw $0, $0 +#else + ldq $0, 16($30) + sll $0, 48, $0 + sra $0, 48, $0 +#endif + addq $30, 16*8, $30 + ret + + .align 4 +$load_32: + ldl $0, 16($30) + nop + addq $30, 16*8, $30 + ret + + .align 4 +$load_64: + ldq $0, 16($30) + nop + addq $30, 16*8, $30 + ret +$LFE2: + + .end ffi_closure_osf + +#ifdef __ELF__ +.section .rodata +#else +.rdata +#endif +$load_table: + .gprel32 $load_none # FFI_TYPE_VOID + .gprel32 $load_32 # FFI_TYPE_INT + .gprel32 $load_float # FFI_TYPE_FLOAT + .gprel32 $load_double # FFI_TYPE_DOUBLE + .gprel32 $load_none # FFI_TYPE_LONGDOUBLE + .gprel32 $load_u8 # FFI_TYPE_UINT8 + .gprel32 $load_s8 # FFI_TYPE_SINT8 + .gprel32 $load_u16 # FFI_TYPE_UINT16 + .gprel32 $load_s16 # FFI_TYPE_SINT16 + .gprel32 $load_32 # FFI_TYPE_UINT32 + .gprel32 $load_32 # FFI_TYPE_SINT32 + .gprel32 $load_64 # FFI_TYPE_UINT64 + .gprel32 $load_64 # FFI_TYPE_SINT64 + .gprel32 $load_none # FFI_TYPE_STRUCT + .gprel32 $load_64 # FFI_TYPE_POINTER + +/* Assert that the table above is in sync with ffi.h. */ + +#if FFI_TYPE_FLOAT != 2 \ + || FFI_TYPE_DOUBLE != 3 \ + || FFI_TYPE_UINT8 != 5 \ + || FFI_TYPE_SINT8 != 6 \ + || FFI_TYPE_UINT16 != 7 \ + || FFI_TYPE_SINT16 != 8 \ + || FFI_TYPE_UINT32 != 9 \ + || FFI_TYPE_SINT32 != 10 \ + || FFI_TYPE_UINT64 != 11 \ + || FFI_TYPE_SINT64 != 12 \ + || FFI_TYPE_STRUCT != 13 \ + || FFI_TYPE_POINTER != 14 \ + || FFI_TYPE_LAST != 14 +#error "osf.S out of sync with ffi.h" +#endif + +#ifdef __ELF__ +# define UA_SI .4byte +# define FDE_ENCODING 0x1b /* pcrel sdata4 */ +# define FDE_ENCODE(X) .4byte X-. +# define FDE_ARANGE(X) .4byte X +#elif defined __osf__ +# define UA_SI .align 0; .long +# define FDE_ENCODING 0x50 /* aligned absolute */ +# define FDE_ENCODE(X) .align 3; .quad X +# define FDE_ARANGE(X) .align 0; .quad X +#endif + +#ifdef __ELF__ + .section .eh_frame,EH_FRAME_FLAGS,@progbits +#elif defined __osf__ + .data + .align 3 + .globl _GLOBAL__F_ffi_call_osf +_GLOBAL__F_ffi_call_osf: +#endif +__FRAME_BEGIN__: + UA_SI $LECIE1-$LSCIE1 # Length of Common Information Entry +$LSCIE1: + UA_SI 0x0 # CIE Identifier Tag + .byte 0x1 # CIE Version + .ascii "zR\0" # CIE Augmentation + .byte 0x1 # uleb128 0x1; CIE Code Alignment Factor + .byte 0x78 # sleb128 -8; CIE Data Alignment Factor + .byte 26 # CIE RA Column + .byte 0x1 # uleb128 0x1; Augmentation size + .byte FDE_ENCODING # FDE Encoding + .byte 0xc # DW_CFA_def_cfa + .byte 30 # uleb128 column 30 + .byte 0 # uleb128 offset 0 + .align 3 +$LECIE1: +$LSFDE1: + UA_SI $LEFDE1-$LASFDE1 # FDE Length +$LASFDE1: + UA_SI $LASFDE1-__FRAME_BEGIN__ # FDE CIE offset + FDE_ENCODE($LFB1) # FDE initial location + FDE_ARANGE($LFE1-$LFB1) # FDE address range + .byte 0x0 # uleb128 0x0; Augmentation size + + .byte 0x4 # DW_CFA_advance_loc4 + UA_SI $LCFI1-$LFB1 + .byte 0x9a # DW_CFA_offset, column 26 + .byte 4 # uleb128 4*-8 + .byte 0x8f # DW_CFA_offset, column 15 + .byte 0x3 # uleb128 3*-8 + .byte 0xc # DW_CFA_def_cfa + .byte 15 # uleb128 column 15 + .byte 32 # uleb128 offset 32 + + .byte 0x4 # DW_CFA_advance_loc4 + UA_SI $LCFI2-$LCFI1 + .byte 0xda # DW_CFA_restore, column 26 + .align 3 +$LEFDE1: + +$LSFDE3: + UA_SI $LEFDE3-$LASFDE3 # FDE Length +$LASFDE3: + UA_SI $LASFDE3-__FRAME_BEGIN__ # FDE CIE offset + FDE_ENCODE($LFB2) # FDE initial location + FDE_ARANGE($LFE2-$LFB2) # FDE address range + .byte 0x0 # uleb128 0x0; Augmentation size + + .byte 0x4 # DW_CFA_advance_loc4 + UA_SI $LCFI5-$LFB2 + .byte 0xe # DW_CFA_def_cfa_offset + .byte 0x80,0x1 # uleb128 128 + + .byte 0x4 # DW_CFA_advance_loc4 + UA_SI $LCFI6-$LCFI5 + .byte 0x9a # DW_CFA_offset, column 26 + .byte 16 # uleb128 offset 16*-8 + .align 3 +$LEFDE3: +#if defined __osf__ + .align 0 + .long 0 # End of Table +#endif + +#if defined __ELF__ && defined __linux__ + .section .note.GNU-stack,"",@progbits +#endif |