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Diffstat (limited to 'bridges/source/cpp_uno/gcc3_freebsd_x86-64/abi.cxx')
| -rw-r--r-- | bridges/source/cpp_uno/gcc3_freebsd_x86-64/abi.cxx | 803 |
1 files changed, 803 insertions, 0 deletions
diff --git a/bridges/source/cpp_uno/gcc3_freebsd_x86-64/abi.cxx b/bridges/source/cpp_uno/gcc3_freebsd_x86-64/abi.cxx new file mode 100644 index 000000000000..937af0152d90 --- /dev/null +++ b/bridges/source/cpp_uno/gcc3_freebsd_x86-64/abi.cxx @@ -0,0 +1,803 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +// MARKER(update_precomp.py): autogen include statement, do not remove +#include "precompiled_bridges.hxx" + +// This is an implementation of the x86-64 ABI as described in 'System V +// Application Binary Interface, AMD64 Architecture Processor Supplement' +// (http://www.x86-64.org/documentation/abi-0.95.pdf) +// +// The code in this file is a modification of src/x86/ffi64.c from libffi +// (http://sources.redhat.com/libffi/) which is under the following license: + +/* ----------------------------------------------------------------------- + ffi.c - Copyright (c) 2002 Bo Thorsen <bo@suse.de> + + x86-64 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 CYGNUS SOLUTIONS 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 <abi.hxx> + +#include <rtl/ustring.hxx> + +using namespace x86_64; + +typedef struct +{ + /* Registers for argument passing. */ + long gpr[MAX_GPR_REGS]; + __int128_t sse[MAX_SSE_REGS]; + + /* Stack space for arguments. */ + char argspace[0]; +} stackLayout; + +/* Register class used for passing given 64bit part of the argument. + These represent classes as documented by the PS ABI, with the exception + of SSESF, SSEDF classes, that are basically SSE class, just gcc will + use SF or DFmode move instead of DImode to avoid reformating penalties. + + Similary we play games with INTEGERSI_CLASS to use cheaper SImode moves + whenever possible (upper half does contain padding). + */ +enum x86_64_reg_class +{ + X86_64_NO_CLASS, + X86_64_INTEGER_CLASS, + X86_64_INTEGERSI_CLASS, + X86_64_SSE_CLASS, + X86_64_SSESF_CLASS, + X86_64_SSEDF_CLASS, + X86_64_SSEUP_CLASS, + X86_64_X87_CLASS, + X86_64_X87UP_CLASS, + X86_64_MEMORY_CLASS +}; + +#define MAX_CLASSES 4 + +#define ALIGN(v, a) (((((size_t) (v))-1) | ((a)-1))+1) + +/* x86-64 register passing implementation. See x86-64 ABI for details. Goal + of this code is to classify each 8bytes of incoming argument by the register + class and assign registers accordingly. */ + +/* Return the union class of CLASS1 and CLASS2. + See the x86-64 PS ABI for details. */ + +static enum x86_64_reg_class +merge_classes (enum x86_64_reg_class class1, enum x86_64_reg_class class2) +{ + /* Rule #1: If both classes are equal, this is the resulting class. */ + if (class1 == class2) + return class1; + + /* Rule #2: If one of the classes is NO_CLASS, the resulting class is + the other class. */ + if (class1 == X86_64_NO_CLASS) + return class2; + if (class2 == X86_64_NO_CLASS) + return class1; + + /* Rule #3: If one of the classes is MEMORY, the result is MEMORY. */ + if (class1 == X86_64_MEMORY_CLASS || class2 == X86_64_MEMORY_CLASS) + return X86_64_MEMORY_CLASS; + + /* Rule #4: If one of the classes is INTEGER, the result is INTEGER. */ + if ((class1 == X86_64_INTEGERSI_CLASS && class2 == X86_64_SSESF_CLASS) + || (class2 == X86_64_INTEGERSI_CLASS && class1 == X86_64_SSESF_CLASS)) + return X86_64_INTEGERSI_CLASS; + if (class1 == X86_64_INTEGER_CLASS || class1 == X86_64_INTEGERSI_CLASS + || class2 == X86_64_INTEGER_CLASS || class2 == X86_64_INTEGERSI_CLASS) + return X86_64_INTEGER_CLASS; + + /* Rule #5: If one of the classes is X87 or X87UP class, MEMORY is used. */ + if (class1 == X86_64_X87_CLASS || class1 == X86_64_X87UP_CLASS + || class2 == X86_64_X87_CLASS || class2 == X86_64_X87UP_CLASS) + return X86_64_MEMORY_CLASS; + + /* Rule #6: Otherwise class SSE is used. */ + return X86_64_SSE_CLASS; +} + +/* Classify the argument of type TYPE and mode MODE. + CLASSES will be filled by the register class used to pass each word + of the operand. The number of words is returned. In case the parameter + should be passed in memory, 0 is returned. As a special case for zero + sized containers, classes[0] will be NO_CLASS and 1 is returned. + + See the x86-64 PS ABI for details. +*/ +static int +classify_argument( typelib_TypeDescriptionReference *pTypeRef, enum x86_64_reg_class classes[], int &rByteOffset ) +{ + /* First, align to the right place. */ + rByteOffset = ALIGN( rByteOffset, pTypeRef->pType->nAlignment ); + + switch ( pTypeRef->eTypeClass ) + { + case typelib_TypeClass_VOID: + classes[0] = X86_64_NO_CLASS; + return 1; + case typelib_TypeClass_CHAR: + case typelib_TypeClass_BOOLEAN: + case typelib_TypeClass_BYTE: + case typelib_TypeClass_SHORT: + case typelib_TypeClass_UNSIGNED_SHORT: + case typelib_TypeClass_LONG: + case typelib_TypeClass_UNSIGNED_LONG: + case typelib_TypeClass_HYPER: + case typelib_TypeClass_UNSIGNED_HYPER: + case typelib_TypeClass_ENUM: + if ( ( rByteOffset % 8 + pTypeRef->pType->nSize ) <= 4 ) + classes[0] = X86_64_INTEGERSI_CLASS; + else + classes[0] = X86_64_INTEGER_CLASS; + return 1; + case typelib_TypeClass_FLOAT: + if ( ( rByteOffset % 8 ) == 0 ) + classes[0] = X86_64_SSESF_CLASS; + else + classes[0] = X86_64_SSE_CLASS; + return 1; + case typelib_TypeClass_DOUBLE: + classes[0] = X86_64_SSEDF_CLASS; + return 1; + /*case LONGDOUBLE: + classes[0] = X86_64_X87_CLASS; + classes[1] = X86_64_X87UP_CLASS; + return 2;*/ + case typelib_TypeClass_STRING: + case typelib_TypeClass_TYPE: + case typelib_TypeClass_ANY: + case typelib_TypeClass_TYPEDEF: + case typelib_TypeClass_UNION: + case typelib_TypeClass_SEQUENCE: + case typelib_TypeClass_ARRAY: + case typelib_TypeClass_INTERFACE: + return 0; + case typelib_TypeClass_STRUCT: + case typelib_TypeClass_EXCEPTION: + { + typelib_TypeDescription * pTypeDescr = 0; + TYPELIB_DANGER_GET( &pTypeDescr, pTypeRef ); + + const int UNITS_PER_WORD = 8; + int words = ( pTypeDescr->nSize + UNITS_PER_WORD - 1 ) / UNITS_PER_WORD; + enum x86_64_reg_class subclasses[MAX_CLASSES]; + + /* If the struct is larger than 16 bytes, pass it on the stack. */ + if ( pTypeDescr->nSize > 16 ) + { + TYPELIB_DANGER_RELEASE( pTypeDescr ); + return 0; + } + + for ( int i = 0; i < words; i++ ) + classes[i] = X86_64_NO_CLASS; + + const typelib_CompoundTypeDescription *pStruct = reinterpret_cast<const typelib_CompoundTypeDescription*>( pTypeDescr ); + + /* Merge the fields of structure. */ + for ( sal_Int32 nMember = 0; nMember < pStruct->nMembers; ++nMember ) + { + typelib_TypeDescriptionReference *pTypeInStruct = pStruct->ppTypeRefs[ nMember ]; + + int num = classify_argument( pTypeInStruct, subclasses, rByteOffset ); + + if ( num == 0 ) + { + TYPELIB_DANGER_RELEASE( pTypeDescr ); + return 0; + } + + for ( int i = 0; i < num; i++ ) + { + int pos = rByteOffset / 8; + classes[i + pos] = merge_classes( subclasses[i], classes[i + pos] ); + } + + if ( pTypeInStruct->eTypeClass != typelib_TypeClass_STRUCT ) + rByteOffset = pStruct->pMemberOffsets[ nMember ]; + } + + TYPELIB_DANGER_RELEASE( pTypeDescr ); + + /* Final merger cleanup. */ + for ( int i = 0; i < words; i++ ) + { + /* If one class is MEMORY, everything should be passed in + memory. */ + if ( classes[i] == X86_64_MEMORY_CLASS ) + return 0; + + /* The X86_64_SSEUP_CLASS should be always preceded by + X86_64_SSE_CLASS. */ + if ( classes[i] == X86_64_SSEUP_CLASS + && ( i == 0 || classes[i - 1] != X86_64_SSE_CLASS ) ) + classes[i] = X86_64_SSE_CLASS; + + /* X86_64_X87UP_CLASS should be preceded by X86_64_X87_CLASS. */ + if ( classes[i] == X86_64_X87UP_CLASS + && ( i == 0 || classes[i - 1] != X86_64_X87_CLASS ) ) + classes[i] = X86_64_SSE_CLASS; + } + return words; + } + + default: +#if OSL_DEBUG_LEVEL > 1 + OSL_TRACE( "Unhandled case: pType->eTypeClass == %d\n", pTypeRef->eTypeClass ); +#endif + OSL_ASSERT(0); + } + return 0; /* Never reached. */ +} + +/* Examine the argument and return set number of register required in each + class. Return 0 iff parameter should be passed in memory. */ +bool x86_64::examine_argument( typelib_TypeDescriptionReference *pTypeRef, bool bInReturn, int &nUsedGPR, int &nUsedSSE ) +{ + enum x86_64_reg_class classes[MAX_CLASSES]; + int offset = 0; + int n; + + n = classify_argument( pTypeRef, classes, offset ); + + if ( n == 0 ) + return false; + + nUsedGPR = 0; + nUsedSSE = 0; + for ( n--; n >= 0; n-- ) + switch ( classes[n] ) + { + case X86_64_INTEGER_CLASS: + case X86_64_INTEGERSI_CLASS: + nUsedGPR++; + break; + case X86_64_SSE_CLASS: + case X86_64_SSESF_CLASS: + case X86_64_SSEDF_CLASS: + nUsedSSE++; + break; + case X86_64_NO_CLASS: + case X86_64_SSEUP_CLASS: + break; + case X86_64_X87_CLASS: + case X86_64_X87UP_CLASS: + if ( !bInReturn ) + return false; + break; + default: +#if OSL_DEBUG_LEVEL > 1 + OSL_TRACE( "Unhandled case: classes[n] == %d\n", classes[n] ); +#endif + OSL_ASSERT(0); + } + return true; +} + +bool x86_64::return_in_hidden_param( typelib_TypeDescriptionReference *pTypeRef ) +{ + int g, s; + + return examine_argument( pTypeRef, true, g, s ) == 0; +} + +void x86_64::fill_struct( typelib_TypeDescriptionReference *pTypeRef, void * const *pGPR, void * const *pSSE, void *pStruct ) +{ + enum x86_64_reg_class classes[MAX_CLASSES]; + int offset = 0; + int n; + + n = classify_argument( pTypeRef, classes, offset ); + + sal_uInt64 *pStructAlign = reinterpret_cast<sal_uInt64 *>( pStruct ); + for ( n--; n >= 0; n-- ) + switch ( classes[n] ) + { + case X86_64_INTEGER_CLASS: + case X86_64_INTEGERSI_CLASS: + *pStructAlign++ = *reinterpret_cast<sal_uInt64 *>( *pGPR++ ); + break; + case X86_64_SSE_CLASS: + case X86_64_SSESF_CLASS: + case X86_64_SSEDF_CLASS: + *pStructAlign++ = *reinterpret_cast<sal_uInt64 *>( *pSSE++ ); + break; + } +} + +#if 0 + +/* Functions to load floats and double to an SSE register placeholder. */ +extern void float2sse (float, __int128_t *); +extern void double2sse (double, __int128_t *); +extern void floatfloat2sse (void *, __int128_t *); + +/* Functions to put the floats and doubles back. */ +extern float sse2float (__int128_t *); +extern double sse2double (__int128_t *); +extern void sse2floatfloat(__int128_t *, void *); + +/*@-exportheader@*/ +void +ffi_prep_args (stackLayout *stack, extended_cif *ecif) +/*@=exportheader@*/ +{ + int gprcount, ssecount, i, g, s; + void **p_argv; + void *argp = &stack->argspace; + ffi_type **p_arg; + + /* First check if the return value should be passed in memory. If so, + pass the pointer as the first argument. */ + gprcount = ssecount = 0; + if (ecif->cif->rtype->type != FFI_TYPE_VOID + && examine_argument (ecif->cif->rtype, 1, &g, &s) == 0) + (void *)stack->gpr[gprcount++] = ecif->rvalue; + + for (i=ecif->cif->nargs, p_arg=ecif->cif->arg_types, p_argv = ecif->avalue; + i!=0; i--, p_arg++, p_argv++) + { + int in_register = 0; + + switch ((*p_arg)->type) + { + case FFI_TYPE_SINT8: + case FFI_TYPE_SINT16: + case FFI_TYPE_SINT32: + case FFI_TYPE_SINT64: + case FFI_TYPE_UINT8: + case FFI_TYPE_UINT16: + case FFI_TYPE_UINT32: + case FFI_TYPE_UINT64: + case FFI_TYPE_POINTER: + if (gprcount < MAX_GPR_REGS) + { + stack->gpr[gprcount] = 0; + stack->gpr[gprcount++] = *(long long *)(*p_argv); + in_register = 1; + } + break; + + case FFI_TYPE_FLOAT: + if (ssecount < MAX_SSE_REGS) + { + float2sse (*(float *)(*p_argv), &stack->sse[ssecount++]); + in_register = 1; + } + break; + + case FFI_TYPE_DOUBLE: + if (ssecount < MAX_SSE_REGS) + { + double2sse (*(double *)(*p_argv), &stack->sse[ssecount++]); + in_register = 1; + } + break; + } + + if (in_register) + continue; + + /* Either all places in registers where filled, or this is a + type that potentially goes into a memory slot. */ + if (examine_argument (*p_arg, 0, &g, &s) == 0 + || gprcount + g > MAX_GPR_REGS || ssecount + s > MAX_SSE_REGS) + { + /* Pass this argument in memory. */ + argp = (void *)ALIGN(argp, (*p_arg)->alignment); + memcpy (argp, *p_argv, (*p_arg)->size); + argp += (*p_arg)->size; + } + else + { + /* All easy cases are eliminated. Now fire the big guns. */ + + enum x86_64_reg_class classes[MAX_CLASSES]; + int offset = 0, j, num; + void *a; + + num = classify_argument (*p_arg, classes, &offset); + for (j=0, a=*p_argv; j<num; j++, a+=8) + { + switch (classes[j]) + { + case X86_64_INTEGER_CLASS: + case X86_64_INTEGERSI_CLASS: + stack->gpr[gprcount++] = *(long long *)a; + break; + case X86_64_SSE_CLASS: + floatfloat2sse (a, &stack->sse[ssecount++]); + break; + case X86_64_SSESF_CLASS: + float2sse (*(float *)a, &stack->sse[ssecount++]); + break; + case X86_64_SSEDF_CLASS: + double2sse (*(double *)a, &stack->sse[ssecount++]); + break; + default: + abort(); + } + } + } + } +} + +/* Perform machine dependent cif processing. */ +ffi_status +ffi_prep_cif_machdep (ffi_cif *cif) +{ + int gprcount, ssecount, i, g, s; + + gprcount = ssecount = 0; + + /* Reset the byte count. We handle this size estimation here. */ + cif->bytes = 0; + + /* If the return value should be passed in memory, pass the pointer + as the first argument. The actual memory isn't allocated here. */ + if (cif->rtype->type != FFI_TYPE_VOID + && examine_argument (cif->rtype, 1, &g, &s) == 0) + gprcount = 1; + + /* Go over all arguments and determine the way they should be passed. + If it's in a register and there is space for it, let that be so. If + not, add it's size to the stack byte count. */ + for (i=0; i<cif->nargs; i++) + { + if (examine_argument (cif->arg_types[i], 0, &g, &s) == 0 + || gprcount + g > MAX_GPR_REGS || ssecount + s > MAX_SSE_REGS) + { + /* This is passed in memory. First align to the basic type. */ + cif->bytes = ALIGN(cif->bytes, cif->arg_types[i]->alignment); + + /* Stack arguments are *always* at least 8 byte aligned. */ + cif->bytes = ALIGN(cif->bytes, 8); + + /* Now add the size of this argument. */ + cif->bytes += cif->arg_types[i]->size; + } + else + { + gprcount += g; + ssecount += s; + } + } + + /* Set the flag for the closures return. */ + switch (cif->rtype->type) + { + case FFI_TYPE_VOID: + case FFI_TYPE_STRUCT: + case FFI_TYPE_SINT64: + case FFI_TYPE_FLOAT: + case FFI_TYPE_DOUBLE: + case FFI_TYPE_LONGDOUBLE: + cif->flags = (unsigned) cif->rtype->type; + break; + + case FFI_TYPE_UINT64: + cif->flags = FFI_TYPE_SINT64; + break; + + default: + cif->flags = FFI_TYPE_INT; + break; + } + + return FFI_OK; +} + +typedef struct +{ + long gpr[2]; + __int128_t sse[2]; + long double st0; +} return_value; + +//#endif + +void +ffi_fill_return_value (return_value *rv, extended_cif *ecif) +{ + enum x86_64_reg_class classes[MAX_CLASSES]; + int i = 0, num; + long *gpr = rv->gpr; + __int128_t *sse = rv->sse; + signed char sc; + signed short ss; + + /* This is needed because of the way x86-64 handles signed short + integers. */ + switch (ecif->cif->rtype->type) + { + case FFI_TYPE_SINT8: + sc = *(signed char *)gpr; + *(long long *)ecif->rvalue = (long long)sc; + return; + case FFI_TYPE_SINT16: + ss = *(signed short *)gpr; + *(long long *)ecif->rvalue = (long long)ss; + return; + default: + /* Just continue. */ + ; + } + + num = classify_argument (ecif->cif->rtype, classes, &i); + + if (num == 0) + /* Return in memory. */ + ecif->rvalue = (void *) rv->gpr[0]; + else if (num == 2 && classes[0] == X86_64_X87_CLASS && + classes[1] == X86_64_X87UP_CLASS) + /* This is a long double (this is easiest to handle this way instead + of an eightbyte at a time as in the loop below. */ + *((long double *)ecif->rvalue) = rv->st0; + else + { + void *a; + + for (i=0, a=ecif->rvalue; i<num; i++, a+=8) + { + switch (classes[i]) + { + case X86_64_INTEGER_CLASS: + case X86_64_INTEGERSI_CLASS: + *(long long *)a = *gpr; + gpr++; + break; + case X86_64_SSE_CLASS: + sse2floatfloat (sse++, a); + break; + case X86_64_SSESF_CLASS: + *(float *)a = sse2float (sse++); + break; + case X86_64_SSEDF_CLASS: + *(double *)a = sse2double (sse++); + break; + default: + abort(); + } + } + } +} + +//#if 0 + +/*@-declundef@*/ +/*@-exportheader@*/ +extern void ffi_call_UNIX64(void (*)(stackLayout *, extended_cif *), + void (*) (return_value *, extended_cif *), + /*@out@*/ extended_cif *, + unsigned, /*@out@*/ unsigned *, void (*fn)()); +/*@=declundef@*/ +/*@=exportheader@*/ + +void ffi_call(/*@dependent@*/ ffi_cif *cif, + void (*fn)(), + /*@out@*/ void *rvalue, + /*@dependent@*/ void **avalue) +{ + extended_cif ecif; + int dummy; + + ecif.cif = cif; + ecif.avalue = avalue; + + /* 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) && + (examine_argument (cif->rtype, 1, &dummy, &dummy) == 0)) + { + /*@-sysunrecog@*/ + ecif.rvalue = alloca(cif->rtype->size); + /*@=sysunrecog@*/ + } + else + ecif.rvalue = rvalue; + + /* Stack must always be 16byte aligned. Make it so. */ + cif->bytes = ALIGN(cif->bytes, 16); + + switch (cif->abi) + { + case FFI_SYSV: + /* Calling 32bit code from 64bit is not possible */ + FFI_ASSERT(0); + break; + + case FFI_UNIX64: + /*@-usedef@*/ + ffi_call_UNIX64 (ffi_prep_args, ffi_fill_return_value, &ecif, + cif->bytes, ecif.rvalue, fn); + /*@=usedef@*/ + break; + + default: + FFI_ASSERT(0); + break; + } +} + +extern void ffi_closure_UNIX64(void); + +ffi_status +ffi_prep_closure (ffi_closure* closure, + ffi_cif* cif, + void (*fun)(ffi_cif*, void*, void**, void*), + void *user_data) +{ + volatile unsigned short *tramp; + + /* FFI_ASSERT (cif->abi == FFI_OSF); */ + + tramp = (volatile unsigned short *) &closure->tramp[0]; + tramp[0] = 0xbb49; /* mov <code>, %r11 */ + tramp[5] = 0xba49; /* mov <data>, %r10 */ + tramp[10] = 0xff49; /* jmp *%r11 */ + tramp[11] = 0x00e3; + *(void * volatile *) &tramp[1] = ffi_closure_UNIX64; + *(void * volatile *) &tramp[6] = closure; + + closure->cif = cif; + closure->fun = fun; + closure->user_data = user_data; + + return FFI_OK; +} + +int +ffi_closure_UNIX64_inner(ffi_closure *closure, va_list l, void *rp) +{ + ffi_cif *cif; + void **avalue; + ffi_type **arg_types; + long i, avn, argn; + + cif = closure->cif; + avalue = alloca(cif->nargs * sizeof(void *)); + + argn = 0; + + i = 0; + avn = cif->nargs; + arg_types = cif->arg_types; + + /* Grab the addresses of the arguments from the stack frame. */ + while (i < avn) + { + 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: + { + if (l->gp_offset > 48-8) + { + avalue[i] = l->overflow_arg_area; + l->overflow_arg_area = (char *)l->overflow_arg_area + 8; + } + else + { + avalue[i] = (char *)l->reg_save_area + l->gp_offset; + l->gp_offset += 8; + } + } + break; + + case FFI_TYPE_STRUCT: + /* FIXME */ + FFI_ASSERT(0); + break; + + case FFI_TYPE_DOUBLE: + { + if (l->fp_offset > 176-16) + { + avalue[i] = l->overflow_arg_area; + l->overflow_arg_area = (char *)l->overflow_arg_area + 8; + } + else + { + avalue[i] = (char *)l->reg_save_area + l->fp_offset; + l->fp_offset += 16; + } + } +#if DEBUG_FFI + fprintf (stderr, "double arg %d = %g\n", i, *(double *)avalue[i]); +#endif + break; + + case FFI_TYPE_FLOAT: + { + if (l->fp_offset > 176-16) + { + avalue[i] = l->overflow_arg_area; + l->overflow_arg_area = (char *)l->overflow_arg_area + 8; + } + else + { + avalue[i] = (char *)l->reg_save_area + l->fp_offset; + l->fp_offset += 16; + } + } +#if DEBUG_FFI + fprintf (stderr, "float arg %d = %g\n", i, *(float *)avalue[i]); +#endif + break; + + default: + FFI_ASSERT(0); + } + + argn += ALIGN(arg_types[i]->size, SIZEOF_ARG) / SIZEOF_ARG; + i++; + } + + /* Invoke the closure. */ + (closure->fun) (cif, rp, avalue, closure->user_data); + + /* FIXME: Structs not supported. */ + FFI_ASSERT(cif->rtype->type != FFI_TYPE_STRUCT); + + /* Tell ffi_closure_UNIX64 how to perform return type promotions. */ + + return cif->rtype->type; +} + +#endif |