[thirdparty/gcc.git] / libffi / src / mips / n32.S

/* -----------------------------------------------------------------------
   n32.S - Copyright (c) 1996, 1998, 2005  Red Hat, Inc.
   
   MIPS 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>

/* Only build this code if we are compiling for n32 */	

#if defined(FFI_MIPS_N32)

#define callback a0
#define bytes	 a2
#define flags	 a3
#define raddr    a4
#define fn       a5

#define SIZEOF_FRAME	( 8 * FFI_SIZEOF_ARG )

	.abicalls
	.text
	.align	2
	.globl	ffi_call_N32
	.ent	ffi_call_N32
ffi_call_N32:	
.LFB3:
	.frame	$fp, SIZEOF_FRAME, ra
	.mask	0xc0000000,-FFI_SIZEOF_ARG
	.fmask	0x00000000,0

	# Prologue
	SUBU	$sp, SIZEOF_FRAME			# Frame size
.LCFI0:
	REG_S	$fp, SIZEOF_FRAME - 2*FFI_SIZEOF_ARG($sp)	# Save frame pointer
	REG_S	ra, SIZEOF_FRAME - 1*FFI_SIZEOF_ARG($sp)	# Save return address
.LCFI1:
	move	$fp, $sp
.LCFI3:
	move	t9, callback	# callback function pointer
	REG_S	bytes, 2*FFI_SIZEOF_ARG($fp) # bytes
	REG_S	flags, 3*FFI_SIZEOF_ARG($fp) # flags
	REG_S	raddr, 4*FFI_SIZEOF_ARG($fp) # raddr
	REG_S	fn,    5*FFI_SIZEOF_ARG($fp) # fn

	# Allocate at least 4 words in the argstack
	move	v0, bytes
	bge	bytes, 4 * FFI_SIZEOF_ARG, bigger	
	LI	v0, 4 * FFI_SIZEOF_ARG
	b	sixteen

	bigger:	
	ADDU	t4, v0, 2 * FFI_SIZEOF_ARG -1	# make sure it is aligned 
	and	v0, t4, -2 * FFI_SIZEOF_ARG		# to a proper boundry.

sixteen:
	SUBU	$sp, $sp, v0	# move the stack pointer to reflect the
				# arg space

	move	a0, $sp         # 4 * FFI_SIZEOF_ARG
	ADDU	a3, $fp, 3 * FFI_SIZEOF_ARG

	# Call ffi_prep_args
	jal	t9
	
	# Copy the stack pointer to t9
	move	t9, $sp
	
	# Fix the stack if there are more than 8 64bit slots worth
	# of arguments.

	# Load the number of bytes
	REG_L	t6, 2*FFI_SIZEOF_ARG($fp)

	# Is it bigger than 8 * FFI_SIZEOF_ARG?
	daddiu	t8, t6, -(8 * FFI_SIZEOF_ARG)
	bltz	t8, loadregs

	ADDU	t9, t9, t8
	
loadregs:	

	REG_L	t6, 3*FFI_SIZEOF_ARG($fp)  # load the flags word into t6.

	and	t4, t6, ((1<<FFI_FLAG_BITS)-1)
	bnez	t4, arg1_floatp
	REG_L	a0, 0*FFI_SIZEOF_ARG(t9)
	b	arg1_next
arg1_floatp:	
	bne	t4, FFI_TYPE_FLOAT, arg1_doublep
	l.s	$f12, 0*FFI_SIZEOF_ARG(t9)
	b	arg1_next
arg1_doublep:	
	l.d	$f12, 0*FFI_SIZEOF_ARG(t9)
arg1_next:	
	
	SRL	t4, t6, 1*FFI_FLAG_BITS
	and	t4, ((1<<FFI_FLAG_BITS)-1)
	bnez	t4, arg2_floatp
	REG_L	a1, 1*FFI_SIZEOF_ARG(t9)
	b	arg2_next
arg2_floatp:
	bne	t4, FFI_TYPE_FLOAT, arg2_doublep
	l.s	$f13, 1*FFI_SIZEOF_ARG(t9)	
	b	arg2_next
arg2_doublep:	
	l.d	$f13, 1*FFI_SIZEOF_ARG(t9)	
arg2_next:	
	
	SRL	t4, t6, 2*FFI_FLAG_BITS
	and	t4, ((1<<FFI_FLAG_BITS)-1)
	bnez	t4, arg3_floatp
	REG_L	a2, 2*FFI_SIZEOF_ARG(t9)
	b	arg3_next
arg3_floatp:
	bne	t4, FFI_TYPE_FLOAT, arg3_doublep
	l.s	$f14, 2*FFI_SIZEOF_ARG(t9)	
	b	arg3_next
arg3_doublep:	
	l.d	$f14, 2*FFI_SIZEOF_ARG(t9)	
arg3_next:	
	
	SRL	t4, t6, 3*FFI_FLAG_BITS
	and	t4, ((1<<FFI_FLAG_BITS)-1)
	bnez	t4, arg4_floatp
	REG_L	a3, 3*FFI_SIZEOF_ARG(t9)
	b	arg4_next
arg4_floatp:
	bne	t4, FFI_TYPE_FLOAT, arg4_doublep
	l.s	$f15, 3*FFI_SIZEOF_ARG(t9)	
	b	arg4_next
arg4_doublep:	
	l.d	$f15, 3*FFI_SIZEOF_ARG(t9)	
arg4_next:	
	
	SRL	t4, t6, 4*FFI_FLAG_BITS
	and	t4, ((1<<FFI_FLAG_BITS)-1)
	bnez	t4, arg5_floatp
	REG_L	a4, 4*FFI_SIZEOF_ARG(t9)
	b	arg5_next
arg5_floatp:
	bne	t4, FFI_TYPE_FLOAT, arg5_doublep
	l.s	$f16, 4*FFI_SIZEOF_ARG(t9)	
	b	arg5_next
arg5_doublep:	
	l.d	$f16, 4*FFI_SIZEOF_ARG(t9)	
arg5_next:	
	
	SRL	t4, t6, 5*FFI_FLAG_BITS
	and	t4, ((1<<FFI_FLAG_BITS)-1)
	bnez	t4, arg6_floatp
	REG_L	a5, 5*FFI_SIZEOF_ARG(t9)
	b	arg6_next
arg6_floatp:
	bne	t4, FFI_TYPE_FLOAT, arg6_doublep
	l.s	$f17, 5*FFI_SIZEOF_ARG(t9)	
	b	arg6_next
arg6_doublep:	
	l.d	$f17, 5*FFI_SIZEOF_ARG(t9)	
arg6_next:	
	
	SRL	t4, t6, 6*FFI_FLAG_BITS
	and	t4, ((1<<FFI_FLAG_BITS)-1)
	bnez	t4, arg7_floatp
	REG_L	a6, 6*FFI_SIZEOF_ARG(t9)
	b	arg7_next
arg7_floatp:
	bne	t4, FFI_TYPE_FLOAT, arg7_doublep
	l.s	$f18, 6*FFI_SIZEOF_ARG(t9)	
	b	arg7_next
arg7_doublep:	
	l.d	$f18, 6*FFI_SIZEOF_ARG(t9)	
arg7_next:	
	
	SRL	t4, t6, 7*FFI_FLAG_BITS
	and	t4, ((1<<FFI_FLAG_BITS)-1)
	bnez	t4, arg8_floatp
	REG_L	a7, 7*FFI_SIZEOF_ARG(t9)
	b	arg8_next
arg8_floatp:
	bne	t4, FFI_TYPE_FLOAT, arg8_doublep
 	l.s	$f19, 7*FFI_SIZEOF_ARG(t9)	
	b	arg8_next
arg8_doublep:	
 	l.d	$f19, 7*FFI_SIZEOF_ARG(t9)	
arg8_next:	

callit:		
	# Load the function pointer
	REG_L	t9, 5*FFI_SIZEOF_ARG($fp)

	# If the return value pointer is NULL, assume no return value.
	REG_L	t5, 4*FFI_SIZEOF_ARG($fp)
	beqz	t5, noretval

	# Shift the return type flag over
	SRL	t6, 8*FFI_FLAG_BITS

	beq	t6, FFI_TYPE_SINT32, retint	
	bne     t6, FFI_TYPE_INT, retfloat
retint:
	jal	t9
	REG_L	t4, 4*FFI_SIZEOF_ARG($fp)
	REG_S	v0, 0(t4)
	b	epilogue

retfloat:
	bne     t6, FFI_TYPE_FLOAT, retdouble
	jal	t9
	REG_L	t4, 4*FFI_SIZEOF_ARG($fp)
	s.s	$f0, 0(t4)
	b	epilogue

retdouble:	
	bne	t6, FFI_TYPE_DOUBLE, retstruct_d
	jal	t9
	REG_L	t4, 4*FFI_SIZEOF_ARG($fp)
	s.d	$f0, 0(t4)
	b	epilogue

retstruct_d:	
	bne	t6, FFI_TYPE_STRUCT_D, retstruct_f
	jal	t9
	REG_L	t4, 4*FFI_SIZEOF_ARG($fp)
	s.d	$f0, 0(t4)
	b	epilogue
	
retstruct_f:	
	bne	t6, FFI_TYPE_STRUCT_F, retstruct_d_d
	jal	t9
	REG_L	t4, 4*FFI_SIZEOF_ARG($fp)
	s.s	$f0, 0(t4)
	b	epilogue
	
retstruct_d_d:	
	bne	t6, FFI_TYPE_STRUCT_DD, retstruct_f_f
	jal	t9
	REG_L	t4, 4*FFI_SIZEOF_ARG($fp)
	s.d	$f0, 0(t4)
	s.d	$f2, 8(t4)
	b	epilogue
	
retstruct_f_f:	
	bne	t6, FFI_TYPE_STRUCT_FF, retstruct_d_f
	jal	t9
	REG_L	t4, 4*FFI_SIZEOF_ARG($fp)
	s.s	$f0, 0(t4)
	s.s	$f2, 4(t4)
	b	epilogue
	
retstruct_d_f:	
	bne	t6, FFI_TYPE_STRUCT_DF, retstruct_f_d
	jal	t9
	REG_L	t4, 4*FFI_SIZEOF_ARG($fp)
	s.d	$f0, 0(t4)
	s.s	$f2, 8(t4)
	b	epilogue
	
retstruct_f_d:	
	bne	t6, FFI_TYPE_STRUCT_FD, retstruct_d_soft
	jal	t9
	REG_L	t4, 4*FFI_SIZEOF_ARG($fp)
	s.s	$f0, 0(t4)
	s.d	$f2, 8(t4)
	b	epilogue

retstruct_d_soft:
	bne	t6, FFI_TYPE_STRUCT_D_SOFT, retstruct_f_soft
	jal	t9
	REG_L	t4, 4*FFI_SIZEOF_ARG($fp)
	sd	v0, 0(t4)
	b	epilogue
	
retstruct_f_soft:	
	bne	t6, FFI_TYPE_STRUCT_F_SOFT, retstruct_d_d_soft
	jal	t9
	REG_L	t4, 4*FFI_SIZEOF_ARG($fp)
	sw	v0, 0(t4)
	b	epilogue
	
retstruct_d_d_soft:	
	bne	t6, FFI_TYPE_STRUCT_DD_SOFT, retstruct_f_f_soft
	jal	t9
	REG_L	t4, 4*FFI_SIZEOF_ARG($fp)
	sd	v0, 0(t4)
	sd	v1, 8(t4)
	b	epilogue
	
retstruct_f_f_soft:	
	bne	t6, FFI_TYPE_STRUCT_FF_SOFT, retstruct_d_f_soft
	jal	t9
	REG_L	t4, 4*FFI_SIZEOF_ARG($fp)
	sw	v0, 0(t4)
	sw	v1, 4(t4)
	b	epilogue
	
retstruct_d_f_soft:	
	bne	t6, FFI_TYPE_STRUCT_DF_SOFT, retstruct_f_d_soft
	jal	t9
	REG_L	t4, 4*FFI_SIZEOF_ARG($fp)
	sd	v0, 0(t4)
	sw	v1, 8(t4)
	b	epilogue
	
retstruct_f_d_soft:	
	bne	t6, FFI_TYPE_STRUCT_FD_SOFT, retstruct_small
	jal	t9
	REG_L	t4, 4*FFI_SIZEOF_ARG($fp)
	sw	v0, 0(t4)
	sd	v1, 8(t4)
	b	epilogue
	
retstruct_small:	
	bne	t6, FFI_TYPE_STRUCT_SMALL, retstruct_small2
	jal	t9
	REG_L	t4, 4*FFI_SIZEOF_ARG($fp)
	REG_S	v0, 0(t4)
	b	epilogue
	
retstruct_small2:	
	bne	t6, FFI_TYPE_STRUCT_SMALL2, retstruct
	jal	t9
	REG_L	t4, 4*FFI_SIZEOF_ARG($fp)
	REG_S	v0, 0(t4)
	REG_S	v1, 8(t4)
	b	epilogue
	
retstruct:	
noretval:	
	jal	t9
	
	# Epilogue
epilogue:	
	move	$sp, $fp	
	REG_L	$fp, SIZEOF_FRAME - 2*FFI_SIZEOF_ARG($sp) # Restore frame pointer
	REG_L	ra, SIZEOF_FRAME - 1*FFI_SIZEOF_ARG($sp)  # Restore return address
	ADDU	$sp, SIZEOF_FRAME		      # Fix stack pointer
	j	ra

.LFE3:
	.end	ffi_call_N32

/* ffi_closure_N32. Expects address of the passed-in ffi_closure in t0
   ($12). Stores any arguments passed in registers onto the stack,
   then calls ffi_closure_mips_inner_N32, which then decodes
   them.
	
	Stack layout:

	20 - Start of parameters, original sp
	19 - Called function a7 save
	18 - Called function a6 save
	17 - Called function a5 save
	16 - Called function a4 save
	15 - Called function a3 save
	14 - Called function a2 save
	13 - Called function a1 save
	12 - Called function a0 save
	11 - Called function f19
	10 - Called function f18
	 9 - Called function f17
	 8 - Called function f16
	 7 - Called function f15
         6 - Called function f14
         5 - Called function f13
         4 - Called function f12
	 3 - return value high (v1 or $f2)
	 2 - return value low (v0 or $f0)
	 1 - ra save
	 0 - gp save our sp  points here
	 */

#define SIZEOF_FRAME2	(20 * FFI_SIZEOF_ARG)
	
#define A7_OFF2		(19 * FFI_SIZEOF_ARG)
#define A6_OFF2		(18 * FFI_SIZEOF_ARG)
#define A5_OFF2		(17 * FFI_SIZEOF_ARG)
#define A4_OFF2		(16 * FFI_SIZEOF_ARG)
#define A3_OFF2		(15 * FFI_SIZEOF_ARG)
#define A2_OFF2		(14 * FFI_SIZEOF_ARG)
#define A1_OFF2		(13 * FFI_SIZEOF_ARG)
#define A0_OFF2		(12 * FFI_SIZEOF_ARG)	

#define F19_OFF2	(11 * FFI_SIZEOF_ARG)
#define F18_OFF2	(10 * FFI_SIZEOF_ARG)
#define F17_OFF2	(9  * FFI_SIZEOF_ARG)
#define F16_OFF2	(8  * FFI_SIZEOF_ARG)
#define F15_OFF2	(7  * FFI_SIZEOF_ARG)
#define F14_OFF2	(6  * FFI_SIZEOF_ARG)
#define F13_OFF2	(5  * FFI_SIZEOF_ARG)
#define F12_OFF2	(4  * FFI_SIZEOF_ARG)

#define V1_OFF2		(3  * FFI_SIZEOF_ARG)
#define V0_OFF2		(2  * FFI_SIZEOF_ARG)

#define RA_OFF2		(1  * FFI_SIZEOF_ARG)
#define GP_OFF2		(0  * FFI_SIZEOF_ARG)

	.align	2
	.globl	ffi_closure_N32
	.ent	ffi_closure_N32
ffi_closure_N32:
.LFB2:
	.frame	$sp, SIZEOF_FRAME2, ra
	.mask	0x90000000,-(SIZEOF_FRAME2 - RA_OFF2)
	.fmask	0x00000000,0
	SUBU	$sp, SIZEOF_FRAME2
.LCFI5:
	.cpsetup t9, GP_OFF2, ffi_closure_N32
	REG_S	ra, RA_OFF2($sp)	# Save return address
.LCFI6:
	# Store all possible argument registers. If there are more than
	# fit in registers, then they were stored on the stack.
	REG_S	a0, A0_OFF2($sp)
	REG_S	a1, A1_OFF2($sp)
	REG_S	a2, A2_OFF2($sp)
	REG_S	a3, A3_OFF2($sp)
	REG_S	a4, A4_OFF2($sp)
	REG_S	a5, A5_OFF2($sp)
	REG_S	a6, A6_OFF2($sp)
	REG_S	a7, A7_OFF2($sp)

	# Store all possible float/double registers.
	s.d	$f12, F12_OFF2($sp)
	s.d	$f13, F13_OFF2($sp)
	s.d	$f14, F14_OFF2($sp)
	s.d	$f15, F15_OFF2($sp)
	s.d	$f16, F16_OFF2($sp)
	s.d	$f17, F17_OFF2($sp)
	s.d	$f18, F18_OFF2($sp)
	s.d	$f19, F19_OFF2($sp)

	# Call ffi_closure_mips_inner_N32 to do the real work.
	LA	t9, ffi_closure_mips_inner_N32
	move	a0, $12	 # Pointer to the ffi_closure
	ADDU	a1, $sp, V0_OFF2
	ADDU	a2, $sp, A0_OFF2
	ADDU	a3, $sp, F12_OFF2
	jalr	t9

	# Return flags are in v0
	bne     v0, FFI_TYPE_SINT32, cls_retint
	lw	v0, V0_OFF2($sp)
	b	cls_epilogue

cls_retint:
	bne     v0, FFI_TYPE_INT, cls_retfloat
	REG_L	v0, V0_OFF2($sp)
	b	cls_epilogue

cls_retfloat:
	bne     v0, FFI_TYPE_FLOAT, cls_retdouble
	l.s	$f0, V0_OFF2($sp)
	b	cls_epilogue

cls_retdouble:	
	bne	v0, FFI_TYPE_DOUBLE, cls_retstruct_d
	l.d	$f0, V0_OFF2($sp)
	b	cls_epilogue

cls_retstruct_d:	
	bne	v0, FFI_TYPE_STRUCT_D, cls_retstruct_f
	l.d	$f0, V0_OFF2($sp)
	b	cls_epilogue
	
cls_retstruct_f:	
	bne	v0, FFI_TYPE_STRUCT_F, cls_retstruct_d_d
	l.s	$f0, V0_OFF2($sp)
	b	cls_epilogue
	
cls_retstruct_d_d:	
	bne	v0, FFI_TYPE_STRUCT_DD, cls_retstruct_f_f
	l.d	$f0, V0_OFF2($sp)
	l.d	$f2, V1_OFF2($sp)
	b	cls_epilogue
	
cls_retstruct_f_f:	
	bne	v0, FFI_TYPE_STRUCT_FF, cls_retstruct_d_f
	l.s	$f0, V0_OFF2($sp)
	l.s	$f2, V1_OFF2($sp)
	b	cls_epilogue
	
cls_retstruct_d_f:	
	bne	v0, FFI_TYPE_STRUCT_DF, cls_retstruct_f_d
	l.d	$f0, V0_OFF2($sp)
	l.s	$f2, V1_OFF2($sp)
	b	cls_epilogue
	
cls_retstruct_f_d:	
	bne	v0, FFI_TYPE_STRUCT_FD, cls_retstruct_small2
	l.s	$f0, V0_OFF2($sp)
	l.d	$f2, V1_OFF2($sp)
	b	cls_epilogue
	
cls_retstruct_small2:	
	REG_L	v0, V0_OFF2($sp)
	REG_L	v1, V1_OFF2($sp)
	
	# Epilogue
cls_epilogue:	
	REG_L	ra,  RA_OFF2($sp)	 # Restore return address
	.cpreturn
	ADDU	$sp, SIZEOF_FRAME2
	j	ra
.LFE2:	
	.end	ffi_closure_N32

        .section        .eh_frame,"aw",@progbits
.Lframe1:
        .4byte  .LECIE1-.LSCIE1		# length
.LSCIE1:
        .4byte  0x0			# CIE
        .byte   0x1			# Version 1
        .ascii  "\000"			# Augmentation
        .uleb128 0x1			# Code alignment 1
        .sleb128 -4			# Data alignment -4
        .byte   0x1f			# Return Address $31
        .byte   0xc			# DW_CFA_def_cfa
        .uleb128 0x1d			# in $sp
        .uleb128 0x0			# offset 0
        .align  EH_FRAME_ALIGN
.LECIE1:

.LSFDE1:
        .4byte  .LEFDE1-.LASFDE1	# length.
.LASFDE1:
        .4byte  .LASFDE1-.Lframe1	# CIE_pointer.
        FDE_ADDR_BYTES  .LFB3		# initial_location.
        FDE_ADDR_BYTES  .LFE3-.LFB3	# address_range.
        .byte   0x4			# DW_CFA_advance_loc4
        .4byte  .LCFI0-.LFB3		# to .LCFI0
        .byte   0xe			# DW_CFA_def_cfa_offset
        .uleb128 SIZEOF_FRAME		# adjust stack.by SIZEOF_FRAME
        .byte   0x4			# DW_CFA_advance_loc4
        .4byte  .LCFI1-.LCFI0		# to .LCFI1
        .byte   0x9e			# DW_CFA_offset of $fp
        .uleb128 2*FFI_SIZEOF_ARG/4	# 
        .byte   0x9f			# DW_CFA_offset of ra
        .uleb128 1*FFI_SIZEOF_ARG/4	# 
        .byte   0x4			# DW_CFA_advance_loc4
        .4byte  .LCFI3-.LCFI1		# to .LCFI3
        .byte   0xd			# DW_CFA_def_cfa_register
        .uleb128 0x1e			# in $fp
        .align  EH_FRAME_ALIGN
.LEFDE1:
.LSFDE3:
	.4byte	.LEFDE3-.LASFDE3	# length
.LASFDE3:
	.4byte	.LASFDE3-.Lframe1	# CIE_pointer.
	FDE_ADDR_BYTES	.LFB2		# initial_location.
	FDE_ADDR_BYTES	.LFE2-.LFB2	# address_range.
	.byte	0x4			# DW_CFA_advance_loc4
	.4byte	.LCFI5-.LFB2		# to .LCFI5
	.byte	0xe			# DW_CFA_def_cfa_offset
	.uleb128 SIZEOF_FRAME2		# adjust stack.by SIZEOF_FRAME
	.byte	0x4			# DW_CFA_advance_loc4
	.4byte	.LCFI6-.LCFI5		# to .LCFI6
	.byte	0x9c			# DW_CFA_offset of $gp ($28)
	.uleb128 (SIZEOF_FRAME2 - GP_OFF2)/4
	.byte	0x9f			# DW_CFA_offset of ra ($31)
	.uleb128 (SIZEOF_FRAME2 - RA_OFF2)/4
	.align	EH_FRAME_ALIGN
.LEFDE3:
	
#endif
Commit	Line	Data
63e5e3e0	1	/* -----------------------------------------------------------------------
2572f1c6	2	n32.S - Copyright (c) 1996, 1998, 2005 Red Hat, Inc.
63e5e3e0 AG	3
	4	MIPS Foreign Function Interface
	5
63e5e3e0 AG	6	Permission is hereby granted, free of charge, to any person obtaining
	7	a copy of this software and associated documentation files (the
	8	``Software''), to deal in the Software without restriction, including
	9	without limitation the rights to use, copy, modify, merge, publish,
	10	distribute, sublicense, and/or sell copies of the Software, and to
	11	permit persons to whom the Software is furnished to do so, subject to
	12	the following conditions:
	13
	14	The above copyright notice and this permission notice shall be included
	15	in all copies or substantial portions of the Software.
	16
5f933ef0 AH	17	THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND,
	18	EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	19	MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	20	NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
	21	HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
	22	WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	23	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
	24	DEALINGS IN THE SOFTWARE.
63e5e3e0 AG	25	----------------------------------------------------------------------- */
	26
	27	#define LIBFFI_ASM
1450eb7a	28	#include <fficonfig.h>
63e5e3e0 AG	29	#include <ffi.h>
	30
	31	/* Only build this code if we are compiling for n32 */
	32
	33	#if defined(FFI_MIPS_N32)
	34
	35	#define callback a0
	36	#define bytes a2
	37	#define flags a3
	38	#define raddr a4
	39	#define fn a5
	40
1450eb7a	41	#define SIZEOF_FRAME ( 8 * FFI_SIZEOF_ARG )
63e5e3e0	42
2572f1c6	43	.abicalls
63e5e3e0 AG	44	.text
	45	.align 2
	46	.globl ffi_call_N32
	47	.ent ffi_call_N32
	48	ffi_call_N32:
89d9d98a DD	49	.LFB3:
	50	.frame $fp, SIZEOF_FRAME, ra
	51	.mask 0xc0000000,-FFI_SIZEOF_ARG
	52	.fmask 0x00000000,0
63e5e3e0 AG	53
	54	# Prologue
	55	SUBU $sp, SIZEOF_FRAME # Frame size
89d9d98a	56	.LCFI0:
1450eb7a AT	57	REG_S $fp, SIZEOF_FRAME - 2*FFI_SIZEOF_ARG($sp) # Save frame pointer
1450eb7a AT	58	REG_S ra, SIZEOF_FRAME - 1*FFI_SIZEOF_ARG($sp) # Save return address
89d9d98a	59	.LCFI1:
63e5e3e0	60	move $fp, $sp
89d9d98a	61	.LCFI3:
63e5e3e0	62	move t9, callback # callback function pointer
1450eb7a AT	63	REG_S bytes, 2*FFI_SIZEOF_ARG($fp) # bytes
	64	REG_S flags, 3*FFI_SIZEOF_ARG($fp) # flags
	65	REG_S raddr, 4*FFI_SIZEOF_ARG($fp) # raddr
	66	REG_S fn, 5*FFI_SIZEOF_ARG($fp) # fn
63e5e3e0 AG	67
	68	# Allocate at least 4 words in the argstack
	69	move v0, bytes
1450eb7a AT	70	bge bytes, 4 * FFI_SIZEOF_ARG, bigger
1450eb7a AT	71	LI v0, 4 * FFI_SIZEOF_ARG
63e5e3e0 AG	72	b sixteen
	73
	74	bigger:
1450eb7a AT	75	ADDU t4, v0, 2 * FFI_SIZEOF_ARG -1 # make sure it is aligned
1450eb7a AT	76	and v0, t4, -2 * FFI_SIZEOF_ARG # to a proper boundry.
63e5e3e0 AG	77
	78	sixteen:
	79	SUBU $sp, $sp, v0 # move the stack pointer to reflect the
	80	# arg space
	81
c94ae2e4	82	move a0, $sp # 4 * FFI_SIZEOF_ARG
1450eb7a	83	ADDU a3, $fp, 3 * FFI_SIZEOF_ARG
63e5e3e0 AG	84
	85	# Call ffi_prep_args
	86	jal t9
	87
63e5e3e0 AG	88	# Copy the stack pointer to t9
	89	move t9, $sp
	90
	91	# Fix the stack if there are more than 8 64bit slots worth
	92	# of arguments.
	93
	94	# Load the number of bytes
1450eb7a	95	REG_L t6, 2*FFI_SIZEOF_ARG($fp)
63e5e3e0	96
1450eb7a	97	# Is it bigger than 8 * FFI_SIZEOF_ARG?
c94ae2e4	98	daddiu t8, t6, -(8 * FFI_SIZEOF_ARG)
63e5e3e0 AG	99	bltz t8, loadregs
63e5e3e0 AG	100
c94ae2e4	101	ADDU t9, t9, t8
63e5e3e0 AG	102
	103	loadregs:
	104
c94ae2e4	105	REG_L t6, 3*FFI_SIZEOF_ARG($fp) # load the flags word into t6.
63e5e3e0	106
c94ae2e4	107	and t4, t6, ((1<<FFI_FLAG_BITS)-1)
63e5e3e0	108	bnez t4, arg1_floatp
1450eb7a	109	REG_L a0, 0*FFI_SIZEOF_ARG(t9)
63e5e3e0 AG	110	b arg1_next
	111	arg1_floatp:
	112	bne t4, FFI_TYPE_FLOAT, arg1_doublep
1450eb7a	113	l.s $f12, 0*FFI_SIZEOF_ARG(t9)
63e5e3e0 AG	114	b arg1_next
63e5e3e0 AG	115	arg1_doublep:
1450eb7a	116	l.d $f12, 0*FFI_SIZEOF_ARG(t9)
63e5e3e0 AG	117	arg1_next:
63e5e3e0 AG	118
c94ae2e4	119	SRL t4, t6, 1*FFI_FLAG_BITS
63e5e3e0 AG	120	and t4, ((1<<FFI_FLAG_BITS)-1)
63e5e3e0 AG	121	bnez t4, arg2_floatp
1450eb7a	122	REG_L a1, 1*FFI_SIZEOF_ARG(t9)
63e5e3e0 AG	123	b arg2_next
	124	arg2_floatp:
	125	bne t4, FFI_TYPE_FLOAT, arg2_doublep
1450eb7a	126	l.s $f13, 1*FFI_SIZEOF_ARG(t9)
63e5e3e0 AG	127	b arg2_next
63e5e3e0 AG	128	arg2_doublep:
1450eb7a	129	l.d $f13, 1*FFI_SIZEOF_ARG(t9)
63e5e3e0 AG	130	arg2_next:
63e5e3e0 AG	131
c94ae2e4	132	SRL t4, t6, 2*FFI_FLAG_BITS
63e5e3e0 AG	133	and t4, ((1<<FFI_FLAG_BITS)-1)
63e5e3e0 AG	134	bnez t4, arg3_floatp
1450eb7a	135	REG_L a2, 2*FFI_SIZEOF_ARG(t9)
63e5e3e0 AG	136	b arg3_next
	137	arg3_floatp:
	138	bne t4, FFI_TYPE_FLOAT, arg3_doublep
1450eb7a	139	l.s $f14, 2*FFI_SIZEOF_ARG(t9)
63e5e3e0 AG	140	b arg3_next
63e5e3e0 AG	141	arg3_doublep:
1450eb7a	142	l.d $f14, 2*FFI_SIZEOF_ARG(t9)
63e5e3e0 AG	143	arg3_next:
63e5e3e0 AG	144
c94ae2e4	145	SRL t4, t6, 3*FFI_FLAG_BITS
63e5e3e0 AG	146	and t4, ((1<<FFI_FLAG_BITS)-1)
63e5e3e0 AG	147	bnez t4, arg4_floatp
1450eb7a	148	REG_L a3, 3*FFI_SIZEOF_ARG(t9)
63e5e3e0 AG	149	b arg4_next
	150	arg4_floatp:
	151	bne t4, FFI_TYPE_FLOAT, arg4_doublep
1450eb7a	152	l.s $f15, 3*FFI_SIZEOF_ARG(t9)
63e5e3e0 AG	153	b arg4_next
63e5e3e0 AG	154	arg4_doublep:
1450eb7a	155	l.d $f15, 3*FFI_SIZEOF_ARG(t9)
63e5e3e0 AG	156	arg4_next:
63e5e3e0 AG	157
c94ae2e4	158	SRL t4, t6, 4*FFI_FLAG_BITS
63e5e3e0 AG	159	and t4, ((1<<FFI_FLAG_BITS)-1)
63e5e3e0 AG	160	bnez t4, arg5_floatp
1450eb7a	161	REG_L a4, 4*FFI_SIZEOF_ARG(t9)
63e5e3e0 AG	162	b arg5_next
	163	arg5_floatp:
	164	bne t4, FFI_TYPE_FLOAT, arg5_doublep
1450eb7a	165	l.s $f16, 4*FFI_SIZEOF_ARG(t9)
63e5e3e0 AG	166	b arg5_next
63e5e3e0 AG	167	arg5_doublep:
1450eb7a	168	l.d $f16, 4*FFI_SIZEOF_ARG(t9)
63e5e3e0 AG	169	arg5_next:
63e5e3e0 AG	170
c94ae2e4	171	SRL t4, t6, 5*FFI_FLAG_BITS
63e5e3e0 AG	172	and t4, ((1<<FFI_FLAG_BITS)-1)
63e5e3e0 AG	173	bnez t4, arg6_floatp
1450eb7a	174	REG_L a5, 5*FFI_SIZEOF_ARG(t9)
63e5e3e0 AG	175	b arg6_next
	176	arg6_floatp:
	177	bne t4, FFI_TYPE_FLOAT, arg6_doublep
1450eb7a	178	l.s $f17, 5*FFI_SIZEOF_ARG(t9)
63e5e3e0 AG	179	b arg6_next
63e5e3e0 AG	180	arg6_doublep:
1450eb7a	181	l.d $f17, 5*FFI_SIZEOF_ARG(t9)
63e5e3e0 AG	182	arg6_next:
63e5e3e0 AG	183
c94ae2e4	184	SRL t4, t6, 6*FFI_FLAG_BITS
63e5e3e0 AG	185	and t4, ((1<<FFI_FLAG_BITS)-1)
63e5e3e0 AG	186	bnez t4, arg7_floatp
1450eb7a	187	REG_L a6, 6*FFI_SIZEOF_ARG(t9)
63e5e3e0 AG	188	b arg7_next
	189	arg7_floatp:
	190	bne t4, FFI_TYPE_FLOAT, arg7_doublep
1450eb7a	191	l.s $f18, 6*FFI_SIZEOF_ARG(t9)
63e5e3e0 AG	192	b arg7_next
63e5e3e0 AG	193	arg7_doublep:
1450eb7a	194	l.d $f18, 6*FFI_SIZEOF_ARG(t9)
63e5e3e0 AG	195	arg7_next:
63e5e3e0 AG	196
c94ae2e4	197	SRL t4, t6, 7*FFI_FLAG_BITS
63e5e3e0 AG	198	and t4, ((1<<FFI_FLAG_BITS)-1)
63e5e3e0 AG	199	bnez t4, arg8_floatp
1450eb7a	200	REG_L a7, 7*FFI_SIZEOF_ARG(t9)
63e5e3e0 AG	201	b arg8_next
	202	arg8_floatp:
	203	bne t4, FFI_TYPE_FLOAT, arg8_doublep
1450eb7a	204	l.s $f19, 7*FFI_SIZEOF_ARG(t9)
63e5e3e0 AG	205	b arg8_next
63e5e3e0 AG	206	arg8_doublep:
1450eb7a	207	l.d $f19, 7*FFI_SIZEOF_ARG(t9)
63e5e3e0 AG	208	arg8_next:
	209
	210	callit:
	211	# Load the function pointer
1450eb7a	212	REG_L t9, 5*FFI_SIZEOF_ARG($fp)
63e5e3e0 AG	213
63e5e3e0 AG	214	# If the return value pointer is NULL, assume no return value.
1450eb7a	215	REG_L t5, 4*FFI_SIZEOF_ARG($fp)
63e5e3e0 AG	216	beqz t5, noretval
	217
	218	# Shift the return type flag over
	219	SRL t6, 8*FFI_FLAG_BITS
5cbf8c8d DD	220
5cbf8c8d DD	221	beq t6, FFI_TYPE_SINT32, retint
63e5e3e0	222	bne t6, FFI_TYPE_INT, retfloat
5cbf8c8d	223	retint:
63e5e3e0	224	jal t9
1450eb7a	225	REG_L t4, 4*FFI_SIZEOF_ARG($fp)
63e5e3e0 AG	226	REG_S v0, 0(t4)
	227	b epilogue
	228
	229	retfloat:
	230	bne t6, FFI_TYPE_FLOAT, retdouble
	231	jal t9
1450eb7a	232	REG_L t4, 4*FFI_SIZEOF_ARG($fp)
63e5e3e0 AG	233	s.s $f0, 0(t4)
	234	b epilogue
	235
	236	retdouble:
	237	bne t6, FFI_TYPE_DOUBLE, retstruct_d
	238	jal t9
1450eb7a	239	REG_L t4, 4*FFI_SIZEOF_ARG($fp)
63e5e3e0 AG	240	s.d $f0, 0(t4)
	241	b epilogue
	242
	243	retstruct_d:
	244	bne t6, FFI_TYPE_STRUCT_D, retstruct_f
	245	jal t9
1450eb7a	246	REG_L t4, 4*FFI_SIZEOF_ARG($fp)
63e5e3e0 AG	247	s.d $f0, 0(t4)
	248	b epilogue
	249
	250	retstruct_f:
	251	bne t6, FFI_TYPE_STRUCT_F, retstruct_d_d
	252	jal t9
1450eb7a	253	REG_L t4, 4*FFI_SIZEOF_ARG($fp)
63e5e3e0 AG	254	s.s $f0, 0(t4)
	255	b epilogue
	256
	257	retstruct_d_d:
	258	bne t6, FFI_TYPE_STRUCT_DD, retstruct_f_f
	259	jal t9
1450eb7a	260	REG_L t4, 4*FFI_SIZEOF_ARG($fp)
63e5e3e0 AG	261	s.d $f0, 0(t4)
	262	s.d $f2, 8(t4)
	263	b epilogue
	264
	265	retstruct_f_f:
	266	bne t6, FFI_TYPE_STRUCT_FF, retstruct_d_f
	267	jal t9
1450eb7a	268	REG_L t4, 4*FFI_SIZEOF_ARG($fp)
63e5e3e0 AG	269	s.s $f0, 0(t4)
	270	s.s $f2, 4(t4)
	271	b epilogue
	272
	273	retstruct_d_f:
	274	bne t6, FFI_TYPE_STRUCT_DF, retstruct_f_d
	275	jal t9
1450eb7a	276	REG_L t4, 4*FFI_SIZEOF_ARG($fp)
63e5e3e0 AG	277	s.d $f0, 0(t4)
	278	s.s $f2, 8(t4)
	279	b epilogue
	280
	281	retstruct_f_d:
5cbf8c8d	282	bne t6, FFI_TYPE_STRUCT_FD, retstruct_d_soft
63e5e3e0	283	jal t9
1450eb7a	284	REG_L t4, 4*FFI_SIZEOF_ARG($fp)
63e5e3e0 AG	285	s.s $f0, 0(t4)
	286	s.d $f2, 8(t4)
	287	b epilogue
5cbf8c8d DD	288
	289	retstruct_d_soft:
	290	bne t6, FFI_TYPE_STRUCT_D_SOFT, retstruct_f_soft
	291	jal t9
	292	REG_L t4, 4*FFI_SIZEOF_ARG($fp)
	293	sd v0, 0(t4)
	294	b epilogue
	295
	296	retstruct_f_soft:
	297	bne t6, FFI_TYPE_STRUCT_F_SOFT, retstruct_d_d_soft
	298	jal t9
	299	REG_L t4, 4*FFI_SIZEOF_ARG($fp)
	300	sw v0, 0(t4)
	301	b epilogue
	302
	303	retstruct_d_d_soft:
	304	bne t6, FFI_TYPE_STRUCT_DD_SOFT, retstruct_f_f_soft
	305	jal t9
	306	REG_L t4, 4*FFI_SIZEOF_ARG($fp)
	307	sd v0, 0(t4)
	308	sd v1, 8(t4)
	309	b epilogue
	310
	311	retstruct_f_f_soft:
	312	bne t6, FFI_TYPE_STRUCT_FF_SOFT, retstruct_d_f_soft
	313	jal t9
	314	REG_L t4, 4*FFI_SIZEOF_ARG($fp)
	315	sw v0, 0(t4)
	316	sw v1, 4(t4)
	317	b epilogue
	318
	319	retstruct_d_f_soft:
	320	bne t6, FFI_TYPE_STRUCT_DF_SOFT, retstruct_f_d_soft
	321	jal t9
	322	REG_L t4, 4*FFI_SIZEOF_ARG($fp)
	323	sd v0, 0(t4)
	324	sw v1, 8(t4)
	325	b epilogue
	326
	327	retstruct_f_d_soft:
	328	bne t6, FFI_TYPE_STRUCT_FD_SOFT, retstruct_small
	329	jal t9
	330	REG_L t4, 4*FFI_SIZEOF_ARG($fp)
	331	sw v0, 0(t4)
	332	sd v1, 8(t4)
	333	b epilogue
63e5e3e0 AG	334
	335	retstruct_small:
	336	bne t6, FFI_TYPE_STRUCT_SMALL, retstruct_small2
	337	jal t9
1450eb7a	338	REG_L t4, 4*FFI_SIZEOF_ARG($fp)
63e5e3e0 AG	339	REG_S v0, 0(t4)
	340	b epilogue
	341
	342	retstruct_small2:
	343	bne t6, FFI_TYPE_STRUCT_SMALL2, retstruct
	344	jal t9
1450eb7a	345	REG_L t4, 4*FFI_SIZEOF_ARG($fp)
63e5e3e0 AG	346	REG_S v0, 0(t4)
	347	REG_S v1, 8(t4)
	348	b epilogue
	349
	350	retstruct:
	351	noretval:
	352	jal t9
	353
	354	# Epilogue
	355	epilogue:
	356	move $sp, $fp
1450eb7a AT	357	REG_L $fp, SIZEOF_FRAME - 2*FFI_SIZEOF_ARG($sp) # Restore frame pointer
1450eb7a AT	358	REG_L ra, SIZEOF_FRAME - 1*FFI_SIZEOF_ARG($sp) # Restore return address
63e5e3e0 AG	359	ADDU $sp, SIZEOF_FRAME # Fix stack pointer
	360	j ra
	361
89d9d98a	362	.LFE3:
63e5e3e0	363	.end ffi_call_N32
89d9d98a DD	364
	365	/* ffi_closure_N32. Expects address of the passed-in ffi_closure in t0
	366	($12). Stores any arguments passed in registers onto the stack,
	367	then calls ffi_closure_mips_inner_N32, which then decodes
	368	them.
	369
	370	Stack layout:
	371
	372	20 - Start of parameters, original sp
	373	19 - Called function a7 save
	374	18 - Called function a6 save
	375	17 - Called function a5 save
	376	16 - Called function a4 save
	377	15 - Called function a3 save
	378	14 - Called function a2 save
	379	13 - Called function a1 save
	380	12 - Called function a0 save
	381	11 - Called function f19
	382	10 - Called function f18
	383	9 - Called function f17
	384	8 - Called function f16
	385	7 - Called function f15
	386	6 - Called function f14
	387	5 - Called function f13
	388	4 - Called function f12
	389	3 - return value high (v1 or $f2)
	390	2 - return value low (v0 or $f0)
	391	1 - ra save
	392	0 - gp save our sp points here
	393	*/
	394
	395	#define SIZEOF_FRAME2 (20 * FFI_SIZEOF_ARG)
	396
	397	#define A7_OFF2 (19 * FFI_SIZEOF_ARG)
	398	#define A6_OFF2 (18 * FFI_SIZEOF_ARG)
	399	#define A5_OFF2 (17 * FFI_SIZEOF_ARG)
	400	#define A4_OFF2 (16 * FFI_SIZEOF_ARG)
	401	#define A3_OFF2 (15 * FFI_SIZEOF_ARG)
	402	#define A2_OFF2 (14 * FFI_SIZEOF_ARG)
	403	#define A1_OFF2 (13 * FFI_SIZEOF_ARG)
	404	#define A0_OFF2 (12 * FFI_SIZEOF_ARG)
	405
	406	#define F19_OFF2 (11 * FFI_SIZEOF_ARG)
	407	#define F18_OFF2 (10 * FFI_SIZEOF_ARG)
	408	#define F17_OFF2 (9 * FFI_SIZEOF_ARG)
	409	#define F16_OFF2 (8 * FFI_SIZEOF_ARG)
	410	#define F15_OFF2 (7 * FFI_SIZEOF_ARG)
	411	#define F14_OFF2 (6 * FFI_SIZEOF_ARG)
	412	#define F13_OFF2 (5 * FFI_SIZEOF_ARG)
	413	#define F12_OFF2 (4 * FFI_SIZEOF_ARG)
	414
	415	#define V1_OFF2 (3 * FFI_SIZEOF_ARG)
	416	#define V0_OFF2 (2 * FFI_SIZEOF_ARG)
	417
	418	#define RA_OFF2 (1 * FFI_SIZEOF_ARG)
	419	#define GP_OFF2 (0 * FFI_SIZEOF_ARG)
	420
	421	.align 2
	422	.globl ffi_closure_N32
	423	.ent ffi_closure_N32
	424	ffi_closure_N32:
	425	.LFB2:
	426	.frame $sp, SIZEOF_FRAME2, ra
	427	.mask 0x90000000,-(SIZEOF_FRAME2 - RA_OFF2)
428	.fmask 0x00000000,0
429	SUBU $sp, SIZEOF_FRAME2
430	.LCFI5:
431	.cpsetup t9, GP_OFF2, ffi_closure_N32
432	REG_S ra, RA_OFF2($sp) # Save return address
433	.LCFI6:
434	# Store all possible argument registers. If there are more than
435	# fit in registers, then they were stored on the stack.
436	REG_S a0, A0_OFF2($sp)
437	REG_S a1, A1_OFF2($sp)
438	REG_S a2, A2_OFF2($sp)
439	REG_S a3, A3_OFF2($sp)
440	REG_S a4, A4_OFF2($sp)
441	REG_S a5, A5_OFF2($sp)
442	REG_S a6, A6_OFF2($sp)
443	REG_S a7, A7_OFF2($sp)
444
445	# Store all possible float/double registers.
446	s.d $f12, F12_OFF2($sp)
447	s.d $f13, F13_OFF2($sp)
448	s.d $f14, F14_OFF2($sp)
449	s.d $f15, F15_OFF2($sp)
450	s.d $f16, F16_OFF2($sp)
451	s.d $f17, F17_OFF2($sp)
452	s.d $f18, F18_OFF2($sp)
453	s.d $f19, F19_OFF2($sp)
454
455	# Call ffi_closure_mips_inner_N32 to do the real work.
456	LA t9, ffi_closure_mips_inner_N32
457	move a0, $12 # Pointer to the ffi_closure
3ef50b62 DD	458	ADDU a1, $sp, V0_OFF2
	459	ADDU a2, $sp, A0_OFF2
	460	ADDU a3, $sp, F12_OFF2
89d9d98a DD	461	jalr t9
	462
	463	# Return flags are in v0
5cbf8c8d DD	464	bne v0, FFI_TYPE_SINT32, cls_retint
	465	lw v0, V0_OFF2($sp)
	466	b cls_epilogue
	467
	468	cls_retint:
89d9d98a DD	469	bne v0, FFI_TYPE_INT, cls_retfloat
	470	REG_L v0, V0_OFF2($sp)
	471	b cls_epilogue
	472
	473	cls_retfloat:
	474	bne v0, FFI_TYPE_FLOAT, cls_retdouble
	475	l.s $f0, V0_OFF2($sp)
	476	b cls_epilogue
	477
	478	cls_retdouble:
	479	bne v0, FFI_TYPE_DOUBLE, cls_retstruct_d
	480	l.d $f0, V0_OFF2($sp)
	481	b cls_epilogue
	482
	483	cls_retstruct_d:
	484	bne v0, FFI_TYPE_STRUCT_D, cls_retstruct_f
	485	l.d $f0, V0_OFF2($sp)
	486	b cls_epilogue
	487
	488	cls_retstruct_f:
	489	bne v0, FFI_TYPE_STRUCT_F, cls_retstruct_d_d
	490	l.s $f0, V0_OFF2($sp)
	491	b cls_epilogue
	492
	493	cls_retstruct_d_d:
	494	bne v0, FFI_TYPE_STRUCT_DD, cls_retstruct_f_f
	495	l.d $f0, V0_OFF2($sp)
	496	l.d $f2, V1_OFF2($sp)
	497	b cls_epilogue
	498
	499	cls_retstruct_f_f:
	500	bne v0, FFI_TYPE_STRUCT_FF, cls_retstruct_d_f
	501	l.s $f0, V0_OFF2($sp)
	502	l.s $f2, V1_OFF2($sp)
	503	b cls_epilogue
	504
	505	cls_retstruct_d_f:
	506	bne v0, FFI_TYPE_STRUCT_DF, cls_retstruct_f_d
	507	l.d $f0, V0_OFF2($sp)
	508	l.s $f2, V1_OFF2($sp)
	509	b cls_epilogue
	510
	511	cls_retstruct_f_d:
	512	bne v0, FFI_TYPE_STRUCT_FD, cls_retstruct_small2
	513	l.s $f0, V0_OFF2($sp)
	514	l.d $f2, V1_OFF2($sp)
	515	b cls_epilogue
	516
	517	cls_retstruct_small2:
	518	REG_L v0, V0_OFF2($sp)
	519	REG_L v1, V1_OFF2($sp)
	520
	521	# Epilogue
	522	cls_epilogue:
	523	REG_L ra, RA_OFF2($sp) # Restore return address
	524	.cpreturn
	525	ADDU $sp, SIZEOF_FRAME2
	526	j ra
	527	.LFE2:
	528	.end ffi_closure_N32
	529
	530	.section .eh_frame,"aw",@progbits
	531	.Lframe1:
	532	.4byte .LECIE1-.LSCIE1 # length
533	.LSCIE1:
534	.4byte 0x0 # CIE
535	.byte 0x1 # Version 1
536	.ascii "\000" # Augmentation
537	.uleb128 0x1 # Code alignment 1
538	.sleb128 -4 # Data alignment -4
539	.byte 0x1f # Return Address $31
540	.byte 0xc # DW_CFA_def_cfa
541	.uleb128 0x1d # in $sp
542	.uleb128 0x0 # offset 0
543	.align EH_FRAME_ALIGN
544	.LECIE1:
545
546	.LSFDE1:
547	.4byte .LEFDE1-.LASFDE1 # length.
548	.LASFDE1:
549	.4byte .LASFDE1-.Lframe1 # CIE_pointer.
550	FDE_ADDR_BYTES .LFB3 # initial_location.
551	FDE_ADDR_BYTES .LFE3-.LFB3 # address_range.
552	.byte 0x4 # DW_CFA_advance_loc4
553	.4byte .LCFI0-.LFB3 # to .LCFI0
554	.byte 0xe # DW_CFA_def_cfa_offset
555	.uleb128 SIZEOF_FRAME # adjust stack.by SIZEOF_FRAME
556	.byte 0x4 # DW_CFA_advance_loc4
557	.4byte .LCFI1-.LCFI0 # to .LCFI1
558	.byte 0x9e # DW_CFA_offset of $fp
559	.uleb128 2*FFI_SIZEOF_ARG/4 #
560	.byte 0x9f # DW_CFA_offset of ra
561	.uleb128 1*FFI_SIZEOF_ARG/4 #
562	.byte 0x4 # DW_CFA_advance_loc4
563	.4byte .LCFI3-.LCFI1 # to .LCFI3
564	.byte 0xd # DW_CFA_def_cfa_register
565	.uleb128 0x1e # in $fp
566	.align EH_FRAME_ALIGN
567	.LEFDE1:
568	.LSFDE3:
569	.4byte .LEFDE3-.LASFDE3 # length
570	.LASFDE3:
571	.4byte .LASFDE3-.Lframe1 # CIE_pointer.
572	FDE_ADDR_BYTES .LFB2 # initial_location.
573	FDE_ADDR_BYTES .LFE2-.LFB2 # address_range.
574	.byte 0x4 # DW_CFA_advance_loc4
575	.4byte .LCFI5-.LFB2 # to .LCFI5
576	.byte 0xe # DW_CFA_def_cfa_offset
577	.uleb128 SIZEOF_FRAME2 # adjust stack.by SIZEOF_FRAME
578	.byte 0x4 # DW_CFA_advance_loc4
579	.4byte .LCFI6-.LCFI5 # to .LCFI6
580	.byte 0x9c # DW_CFA_offset of $gp ($28)
581	.uleb128 (SIZEOF_FRAME2 - GP_OFF2)/4
582	.byte 0x9f # DW_CFA_offset of ra ($31)
583	.uleb128 (SIZEOF_FRAME2 - RA_OFF2)/4
584	.align EH_FRAME_ALIGN
585	.LEFDE3:
63e5e3e0 AG	586
63e5e3e0 AG	587	#endif