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/* -----------------------------------------------------------------------
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sysv.S - Copyright (c) 1998 Red Hat, Inc.
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ARM Foreign Function Interface
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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``Software''), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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IN NO EVENT SHALL CYGNUS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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OTHER DEALINGS IN THE SOFTWARE.
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----------------------------------------------------------------------- */
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#include <fficonfig.h>
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#ifdef HAVE_MACHINE_ASM_H
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#include <machine/asm.h>
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#ifdef __USER_LABEL_PREFIX__
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#define CONCAT1(a, b) CONCAT2(a, b)
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#define CONCAT2(a, b) a ## b
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/* Use the right prefix for global labels. */
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#define CNAME(x) CONCAT1 (__USER_LABEL_PREFIX__, x)
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#define ENTRY(x) .globl CNAME(x); .type CNAME(x),%function; CNAME(x):
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/* We need a better way of testing for this, but for now, this is all
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@ This selects the minimum architecture level required.
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#define __ARM_ARCH__ 3
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#if defined(__ARM_ARCH_4__) || defined(__ARM_ARCH_4T__)
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# define __ARM_ARCH__ 4
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#if defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_5T__) \
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|| defined(__ARM_ARCH_5E__) || defined(__ARM_ARCH_5TE__) \
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|| defined(__ARM_ARCH_5TEJ__)
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# define __ARM_ARCH__ 5
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#if defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) \
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|| defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) \
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|| defined(__ARM_ARCH_6ZK__)
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# define __ARM_ARCH__ 6
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# define call_reg(x) blx x
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#elif defined (__ARM_ARCH_4T__)
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# define call_reg(x) mov lr, pc ; bx x
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# if defined(__thumb__) || defined(__THUMB_INTERWORK__)
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# define __INTERWORKING__
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# define call_reg(x) mov lr, pc ; mov pc, x
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#if defined(__thumb__) && !defined(__THUMB_INTERWORK__)
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.macro ARM_FUNC_START name
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/* A hook to tell gdb that we've switched to ARM mode. Also used to call
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directly from other local arm routines. */
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.macro ARM_FUNC_START name
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.macro RETLDM regs=, cond=, dirn=ia
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#if defined (__INTERWORKING__)
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ldr\cond lr, [sp], #4
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ldm\cond\dirn sp!, {\regs, lr}
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ldr\cond pc, [sp], #4
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ldm\cond\dirn sp!, {\regs, pc}
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@ This assumes we are using gas.
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ARM_FUNC_START ffi_call_SYSV
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stmfd sp!, {r0-r3, fp, lr}
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@ Make room for all of the new args.
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@ Place all of the ffi_prep_args in position
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@ Call ffi_prep_args(stack, &ecif)
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@ move first 4 parameters in registers
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@ Remove the space we pushed for the args
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@ Load r2 with the pointer to storage for the return value
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@ Load r3 with the return type code
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@ If the return value pointer is NULL, assume no return value.
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cmp r3, #FFI_TYPE_INT
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cmpne r3, #FFI_TYPE_FLOAT
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cmp r3, #FFI_TYPE_SINT64
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cmpne r3, #FFI_TYPE_DOUBLE
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cmp r3, #FFI_TYPE_FLOAT
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@ return DOUBLE or LONGDOUBLE
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cmp r3, #FFI_TYPE_DOUBLE
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.size CNAME(ffi_call_SYSV),.ffi_call_SYSV_end-CNAME(ffi_call_SYSV)
added
removed
libffi/src/arm/sysv.S
