[thirdparty/gcc.git] / libgcc / config / picochip / subdi3.S

// picoChip ASM file
//
//   Support for 64-bit subtraction.
//
//   Copyright (C) 2003, 2004, 2005, 2008, 2009  Free Software Foundation, Inc.
//   Contributed by Picochip Ltd.
//   Maintained by Hariharan Sandanagobalane (hariharan@picochip.com)
//
//   This file is free software; you can redistribute it and/or modify it
//   under the terms of the GNU General Public License as published by the
//   Free Software Foundation; either version 3, or (at your option) any
//   later version.
//
//   This file 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
//   General Public License for more details.
//
//   Under Section 7 of GPL version 3, you are granted additional
//   permissions described in the GCC Runtime Library Exception, version
//   3.1, as published by the Free Software Foundation.
//
//   You should have received a copy of the GNU General Public License and
//   a copy of the GCC Runtime Library Exception along with this program;
//   see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
//   <http://www.gnu.org/licenses/>.

.section .text

.align 8		
.global __subdi3
__subdi3:

_picoMark_FUNCTION_BEGIN=
// picoChip Function Prologue : &__subdi3 = 4 bytes

	// The first operand of sub is completely in registers r[2-5]
        // The second operand of sub is in stack FP(0-3)
        // and result need to be written pointed to by the register r0.
	// All we need to do is to load the appropriate values, sub them 
        // appropriately (with sub or subb) and then store the values back.
	ldw (FP)0, r1
	stl r[7:6], (FP)-1
	sub.0 r2, r1, r6
	ldw (FP)1, r1
	subb.0 r3, r1, r7
	ldl (FP)1, r[3:2]
	stl r[7:6], (r0)0
	subb.0 r4, r2, r6
	subb.0 r5, r3, r7
	stl r[7:6], (r0)1
	jr (r12)
=->	ldl (FP)2, r[7:6]

_picoMark_FUNCTION_END=
// picoChip Function Epilogue : __subdi3
	
//============================================================================
// All DWARF information between this marker, and the END OF DWARF
// marker should be included in the source file. Search for
// FUNCTION_STACK_SIZE_GOES_HERE and FUNCTION NAME GOES HERE, and
// provide the relevent information. Add markers called
// _picoMark_FUNCTION_BEGIN and _picoMark_FUNCTION_END around the
// function in question.
//============================================================================

//============================================================================
// Frame information. 
//============================================================================

.section .debug_frame
_picoMark_DebugFrame=

// Common CIE header.
.unalignedInitLong _picoMark_CieEnd-_picoMark_CieBegin
_picoMark_CieBegin=
.unalignedInitLong 0xffffffff
.initByte 0x1	// CIE Version
.ascii 16#0#	// CIE Augmentation
.uleb128 0x1	// CIE Code Alignment Factor
.sleb128 2	// CIE Data Alignment Factor
.initByte 0xc	// CIE RA Column
.initByte 0xc	// DW_CFA_def_cfa
.uleb128 0xd
.uleb128 0x0
.align 2
_picoMark_CieEnd=

// FDE 
_picoMark_LSFDE0I900821033007563=
.unalignedInitLong _picoMark_FdeEnd-_picoMark_FdeBegin
_picoMark_FdeBegin=
.unalignedInitLong _picoMark_DebugFrame	// FDE CIE offset
.unalignedInitWord _picoMark_FUNCTION_BEGIN	// FDE initial location
.unalignedInitWord _picoMark_FUNCTION_END-_picoMark_FUNCTION_BEGIN
.initByte 0xe	// DW_CFA_def_cfa_offset
.uleb128 0x4	// <-- FUNCTION_STACK_SIZE_GOES_HERE
.initByte 0x4	// DW_CFA_advance_loc4
.unalignedInitLong _picoMark_FUNCTION_END-_picoMark_FUNCTION_BEGIN
.initByte 0xe	// DW_CFA_def_cfa_offset
.uleb128 0x0
.align 2
_picoMark_FdeEnd=

//============================================================================
// Abbrevation information.
//============================================================================

.section .debug_abbrev
_picoMark_ABBREVIATIONS=

.section .debug_abbrev
	.uleb128 0x1	// (abbrev code)
	.uleb128 0x11	// (TAG: DW_TAG_compile_unit)
	.initByte 0x1	// DW_children_yes
	.uleb128 0x10	// (DW_AT_stmt_list)
	.uleb128 0x6	// (DW_FORM_data4)
	.uleb128 0x12	// (DW_AT_high_pc)
	.uleb128 0x1	// (DW_FORM_addr)
	.uleb128 0x11	// (DW_AT_low_pc)
	.uleb128 0x1	// (DW_FORM_addr)
	.uleb128 0x25	// (DW_AT_producer)
	.uleb128 0x8	// (DW_FORM_string)
	.uleb128 0x13	// (DW_AT_language)
	.uleb128 0x5	// (DW_FORM_data2)
	.uleb128 0x3	// (DW_AT_name)
	.uleb128 0x8	// (DW_FORM_string)
.initByte 0x0
.initByte 0x0

	.uleb128 0x2	;# (abbrev code)
	.uleb128 0x2e	;# (TAG: DW_TAG_subprogram)
.initByte 0x0	;# DW_children_no
	.uleb128 0x3	;# (DW_AT_name)
	.uleb128 0x8	;# (DW_FORM_string)
	.uleb128 0x11	;# (DW_AT_low_pc)
	.uleb128 0x1	;# (DW_FORM_addr)
	.uleb128 0x12	;# (DW_AT_high_pc)
	.uleb128 0x1	;# (DW_FORM_addr)
.initByte 0x0
.initByte 0x0

.initByte 0x0

//============================================================================
// Line information. DwarfLib requires this to be present, but it can
// be empty.
//============================================================================

.section .debug_line
_picoMark_LINES=

//============================================================================
// Debug Information
//============================================================================
.section .debug_info

//Fixed header.
.unalignedInitLong _picoMark_DEBUG_INFO_END-_picoMark_DEBUG_INFO_BEGIN
_picoMark_DEBUG_INFO_BEGIN=
.unalignedInitWord 0x2
.unalignedInitLong _picoMark_ABBREVIATIONS
.initByte 0x2

// Compile unit information.
.uleb128 0x1	// (DIE 0xb) DW_TAG_compile_unit)
.unalignedInitLong _picoMark_LINES
.unalignedInitWord _picoMark_FUNCTION_END
.unalignedInitWord _picoMark_FUNCTION_BEGIN
// Producer is `picoChip'
.ascii 16#70# 16#69# 16#63# 16#6f# 16#43# 16#68# 16#69# 16#70# 16#00#
.unalignedInitWord 0xcafe // ASM language
.ascii 16#0# // Name. DwarfLib expects this to be present.

.uleb128 0x2	;# (DIE DW_TAG_subprogram)

// FUNCTION NAME GOES HERE. Use `echo name | od -t x1' to get the hex. Each hex
// digit is specified using the format 16#XX#
.ascii 16#5f# 16#73# 16#75# 16#62# 16#64# 16#69# 16#33# 16#0# // Function name `_subdi3'
.unalignedInitWord _picoMark_FUNCTION_BEGIN	// DW_AT_low_pc
.unalignedInitWord _picoMark_FUNCTION_END	// DW_AT_high_pc

.initByte 0x0	// end of compile unit children.

_picoMark_DEBUG_INFO_END=

//============================================================================
// END OF DWARF
//============================================================================
.section .endFile
Commit	Line	Data
358da97e HS	1	// picoChip ASM file
	2	//
	3	// Support for 64-bit subtraction.
	4	//
748086b7	5	// Copyright (C) 2003, 2004, 2005, 2008, 2009 Free Software Foundation, Inc.
b7b25842	6	// Contributed by Picochip Ltd.
358da97e HS	7	// Maintained by Hariharan Sandanagobalane (hariharan@picochip.com)
	8	//
	9	// This file is free software; you can redistribute it and/or modify it
	10	// under the terms of the GNU General Public License as published by the
748086b7	11	// Free Software Foundation; either version 3, or (at your option) any
358da97e HS	12	// later version.
358da97e HS	13	//
358da97e HS	14	// This file is distributed in the hope that it will be useful, but
	15	// WITHOUT ANY WARRANTY; without even the implied warranty of
	16	// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	17	// General Public License for more details.
	18	//
748086b7 JJ	19	// Under Section 7 of GPL version 3, you are granted additional
	20	// permissions described in the GCC Runtime Library Exception, version
	21	// 3.1, as published by the Free Software Foundation.
	22	//
	23	// You should have received a copy of the GNU General Public License and
	24	// a copy of the GCC Runtime Library Exception along with this program;
	25	// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
	26	// <http://www.gnu.org/licenses/>.
358da97e HS	27
	28	.section .text
	29
	30	.align 8
	31	.global __subdi3
	32	__subdi3:
	33
	34	_picoMark_FUNCTION_BEGIN=
	35	// picoChip Function Prologue : &__subdi3 = 4 bytes
	36
	37	// The first operand of sub is completely in registers r[2-5]
	38	// The second operand of sub is in stack FP(0-3)
	39	// and result need to be written pointed to by the register r0.
	40	// All we need to do is to load the appropriate values, sub them
	41	// appropriately (with sub or subb) and then store the values back.
	42	ldw (FP)0, r1
	43	stl r[7:6], (FP)-1
	44	sub.0 r2, r1, r6
	45	ldw (FP)1, r1
	46	subb.0 r3, r1, r7
	47	ldl (FP)1, r[3:2]
	48	stl r[7:6], (r0)0
	49	subb.0 r4, r2, r6
	50	subb.0 r5, r3, r7
	51	stl r[7:6], (r0)1
	52	jr (r12)
	53	=-> ldl (FP)2, r[7:6]
	54
	55	_picoMark_FUNCTION_END=
	56	// picoChip Function Epilogue : __subdi3
	57
	58	//============================================================================
	59	// All DWARF information between this marker, and the END OF DWARF
	60	// marker should be included in the source file. Search for
	61	// FUNCTION_STACK_SIZE_GOES_HERE and FUNCTION NAME GOES HERE, and
	62	// provide the relevent information. Add markers called
	63	// _picoMark_FUNCTION_BEGIN and _picoMark_FUNCTION_END around the
	64	// function in question.
	65	//============================================================================
	66
	67	//============================================================================
	68	// Frame information.
	69	//============================================================================
	70
	71	.section .debug_frame
	72	_picoMark_DebugFrame=
	73
	74	// Common CIE header.
	75	.unalignedInitLong _picoMark_CieEnd-_picoMark_CieBegin
	76	_picoMark_CieBegin=
	77	.unalignedInitLong 0xffffffff
	78	.initByte 0x1 // CIE Version
	79	.ascii 16#0# // CIE Augmentation
	80	.uleb128 0x1 // CIE Code Alignment Factor
	81	.sleb128 2 // CIE Data Alignment Factor
	82	.initByte 0xc // CIE RA Column
	83	.initByte 0xc // DW_CFA_def_cfa
	84	.uleb128 0xd
	85	.uleb128 0x0
	86	.align 2
	87	_picoMark_CieEnd=
	88
	89	// FDE
	90	_picoMark_LSFDE0I900821033007563=
91	.unalignedInitLong _picoMark_FdeEnd-_picoMark_FdeBegin
92	_picoMark_FdeBegin=
93	.unalignedInitLong _picoMark_DebugFrame // FDE CIE offset
94	.unalignedInitWord _picoMark_FUNCTION_BEGIN // FDE initial location
95	.unalignedInitWord _picoMark_FUNCTION_END-_picoMark_FUNCTION_BEGIN
96	.initByte 0xe // DW_CFA_def_cfa_offset
97	.uleb128 0x4 // <-- FUNCTION_STACK_SIZE_GOES_HERE
98	.initByte 0x4 // DW_CFA_advance_loc4
99	.unalignedInitLong _picoMark_FUNCTION_END-_picoMark_FUNCTION_BEGIN
100	.initByte 0xe // DW_CFA_def_cfa_offset
101	.uleb128 0x0
102	.align 2
103	_picoMark_FdeEnd=
104
105	//============================================================================
106	// Abbrevation information.
107	//============================================================================
108
109	.section .debug_abbrev
110	_picoMark_ABBREVIATIONS=
111
112	.section .debug_abbrev
113	.uleb128 0x1 // (abbrev code)
114	.uleb128 0x11 // (TAG: DW_TAG_compile_unit)
115	.initByte 0x1 // DW_children_yes
116	.uleb128 0x10 // (DW_AT_stmt_list)
117	.uleb128 0x6 // (DW_FORM_data4)
118	.uleb128 0x12 // (DW_AT_high_pc)
119	.uleb128 0x1 // (DW_FORM_addr)
120	.uleb128 0x11 // (DW_AT_low_pc)
121	.uleb128 0x1 // (DW_FORM_addr)
122	.uleb128 0x25 // (DW_AT_producer)
123	.uleb128 0x8 // (DW_FORM_string)
124	.uleb128 0x13 // (DW_AT_language)
125	.uleb128 0x5 // (DW_FORM_data2)
126	.uleb128 0x3 // (DW_AT_name)
127	.uleb128 0x8 // (DW_FORM_string)
128	.initByte 0x0
129	.initByte 0x0
130
131	.uleb128 0x2 ;# (abbrev code)
132	.uleb128 0x2e ;# (TAG: DW_TAG_subprogram)
133	.initByte 0x0 ;# DW_children_no
134	.uleb128 0x3 ;# (DW_AT_name)
135	.uleb128 0x8 ;# (DW_FORM_string)
136	.uleb128 0x11 ;# (DW_AT_low_pc)
137	.uleb128 0x1 ;# (DW_FORM_addr)
138	.uleb128 0x12 ;# (DW_AT_high_pc)
139	.uleb128 0x1 ;# (DW_FORM_addr)
140	.initByte 0x0
141	.initByte 0x0
142
143	.initByte 0x0
144
145	//============================================================================
146	// Line information. DwarfLib requires this to be present, but it can
147	// be empty.
148	//============================================================================
149
150	.section .debug_line
151	_picoMark_LINES=
152
153	//============================================================================
154	// Debug Information
155	//============================================================================
156	.section .debug_info
157
158	//Fixed header.
159	.unalignedInitLong _picoMark_DEBUG_INFO_END-_picoMark_DEBUG_INFO_BEGIN
160	_picoMark_DEBUG_INFO_BEGIN=
161	.unalignedInitWord 0x2
162	.unalignedInitLong _picoMark_ABBREVIATIONS
163	.initByte 0x2
164
165	// Compile unit information.
166	.uleb128 0x1 // (DIE 0xb) DW_TAG_compile_unit)
167	.unalignedInitLong _picoMark_LINES
168	.unalignedInitWord _picoMark_FUNCTION_END
169	.unalignedInitWord _picoMark_FUNCTION_BEGIN
170	// Producer is `picoChip'
171	.ascii 16#70# 16#69# 16#63# 16#6f# 16#43# 16#68# 16#69# 16#70# 16#00#
172	.unalignedInitWord 0xcafe // ASM language
173	.ascii 16#0# // Name. DwarfLib expects this to be present.
174
175	.uleb128 0x2 ;# (DIE DW_TAG_subprogram)
176
177	// FUNCTION NAME GOES HERE. Use `echo name \| od -t x1' to get the hex. Each hex
178	// digit is specified using the format 16#XX#
179	.ascii 16#5f# 16#73# 16#75# 16#62# 16#64# 16#69# 16#33# 16#0# // Function name `_subdi3'
180	.unalignedInitWord _picoMark_FUNCTION_BEGIN // DW_AT_low_pc
181	.unalignedInitWord _picoMark_FUNCTION_END // DW_AT_high_pc
182
183	.initByte 0x0 // end of compile unit children.
184
185	_picoMark_DEBUG_INFO_END=
186
187	//============================================================================
188	// END OF DWARF
189	//============================================================================
190	.section .endFile
191