4 // Support for
32-bit signed compare.
6 // Copyright
(C
) 2003, 2004, 2005, 2008, 2009 Free Software Foundation
, Inc.
7 // Contributed by picoChip Designs Ltd.
8 // Maintained by Daniel Towner
(daniel.towner
@picochip.com
)
10 // This file is free software
; you can redistribute it and/or modify it
11 // under the terms of the GNU General
Public License as published by the
12 // Free Software Foundation
; either version 3, or (at your option) any
15 // This file is distributed
in the hope that it will be useful
, but
16 // WITHOUT ANY WARRANTY
; without even the implied warranty of
17 // MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 // General
Public License for more details.
20 // Under
Section 7 of GPL version
3, you are granted additional
21 // permissions described
in the GCC Runtime Library Exception
, version
22 // 3.1, as published by the Free Software Foundation.
24 // You should have received a copy of the GNU General
Public License
and
25 // a copy of the GCC Runtime Library Exception along with
this program
;
26 // see the files COPYING3
and COPYING.RUNTIME respectively. If
not, see
27 // <http://www.gnu.
org/licenses
/>.
29 // Compiled from the following
, and then hand optimised.
31 // int __cmpsi2
(USItype x
, USItype y
)
34 // SIunion lx; lx.l = x;
35 // SIunion ly; ly.l = y;
37 // if (lx.s.high < ly.s.high)
39 // else if (lx.s.high > ly.s.high)
41 // if (lx.s.low < ly.s.low)
43 // else if (lx.s.low > ly.s.low)
53 _picoMark_FUNCTION_BEGIN
=
55 // picoChip Function Prologue
: &___cmpsi2
= 0 bytes
60 =-> SUB.0 R3
,R1
,r15 \ COPY
.1 0,R5
63 =-> SUB.0 R0
,R2
,r15 \ COPY
.1 2,R5
66 =-> SUB.0 R2
,R0
,r15 \ COPY
.1 0,R5
76 _picoMark_FUNCTION_END
=
77 // picoChip Function Epilogue
: __cmpsi2
78 //============================================================================
79 // All DWARF information between
this marker
, and the
END OF DWARF
80 // marker should be included
in the source file. Search for
81 // FUNCTION_STACK_SIZE_GOES_HERE
and FUNCTION
NAME GOES HERE
, and
82 // provide the relevent information.
Add markers called
83 // _picoMark_FUNCTION_BEGIN
and _picoMark_FUNCTION_END around the
84 // function
in question.
85 //============================================================================
87 //============================================================================
89 //============================================================================
95 .unalignedInitLong _picoMark_CieEnd
-_picoMark_CieBegin
97 .unalignedInitLong
0xffffffff
98 .initByte
0x1 // CIE Version
99 .ascii
16#
0#
// CIE Augmentation
100 .uleb128
0x1 // CIE Code Alignment Factor
101 .sleb128
2 // CIE Data Alignment Factor
102 .initByte
0xc // CIE RA Column
103 .initByte
0xc // DW_CFA_def_cfa
110 _picoMark_LSFDE0I900821033007563
=
111 .unalignedInitLong _picoMark_FdeEnd
-_picoMark_FdeBegin
113 .unalignedInitLong _picoMark_DebugFrame
// FDE CIE
offset
114 .unalignedInitWord _picoMark_FUNCTION_BEGIN
// FDE initial location
115 .unalignedInitWord _picoMark_FUNCTION_END
-_picoMark_FUNCTION_BEGIN
116 .initByte
0xe // DW_CFA_def_cfa_offset
117 .uleb128
0x0 // <-- FUNCTION_STACK_SIZE_GOES_HERE
118 .initByte
0x4 // DW_CFA_advance_loc4
119 .unalignedInitLong _picoMark_FUNCTION_END
-_picoMark_FUNCTION_BEGIN
120 .initByte
0xe // DW_CFA_def_cfa_offset
125 //============================================================================
126 // Abbrevation information.
127 //============================================================================
129 .
section .debug_abbrev
130 _picoMark_ABBREVIATIONS
=
132 .
section .debug_abbrev
133 .uleb128
0x1 // (abbrev code
)
134 .uleb128
0x11 // (TAG: DW_TAG_compile_unit
)
135 .initByte
0x1 // DW_children_yes
136 .uleb128
0x10 // (DW_AT_stmt_list
)
137 .uleb128
0x6 // (DW_FORM_data4
)
138 .uleb128
0x12 // (DW_AT_high_pc
)
139 .uleb128
0x1 // (DW_FORM_addr
)
140 .uleb128
0x11 // (DW_AT_low_pc
)
141 .uleb128
0x1 // (DW_FORM_addr
)
142 .uleb128
0x25 // (DW_AT_producer
)
143 .uleb128
0x8 // (DW_FORM_string
)
144 .uleb128
0x13 // (DW_AT_language
)
145 .uleb128
0x5 // (DW_FORM_data2
)
146 .uleb128
0x3 // (DW_AT_name
)
147 .uleb128
0x8 // (DW_FORM_string
)
151 .uleb128
0x2 ;# (abbrev code)
152 .uleb128
0x2e ;# (TAG: DW_TAG_subprogram)
153 .initByte
0x0 ;# DW_children_no
154 .uleb128
0x3 ;# (DW_AT_name)
155 .uleb128
0x8 ;# (DW_FORM_string)
156 .uleb128
0x11 ;# (DW_AT_low_pc)
157 .uleb128
0x1 ;# (DW_FORM_addr)
158 .uleb128
0x12 ;# (DW_AT_high_pc)
159 .uleb128
0x1 ;# (DW_FORM_addr)
165 //============================================================================
166 // Line information. DwarfLib requires
this to be present
, but it can
168 //============================================================================
173 //============================================================================
175 //============================================================================
179 .unalignedInitLong _picoMark_DEBUG_INFO_END
-_picoMark_DEBUG_INFO_BEGIN
180 _picoMark_DEBUG_INFO_BEGIN
=
181 .unalignedInitWord
0x2
182 .unalignedInitLong _picoMark_ABBREVIATIONS
185 // Compile unit information.
186 .uleb128
0x1 // (DIE
0xb) DW_TAG_compile_unit
)
187 .unalignedInitLong _picoMark_LINES
188 .unalignedInitWord _picoMark_FUNCTION_END
189 .unalignedInitWord _picoMark_FUNCTION_BEGIN
190 // Producer is `picoChip
'
191 .ascii 16#70# 16#69# 16#63# 16#6f# 16#43# 16#68# 16#69# 16#70# 16#00#
192 .unalignedInitWord 0xcafe // ASM language
193 .ascii 16#0# // Name. DwarfLib expects this to be present.
195 .uleb128 0x2 ;# (DIE DW_TAG_subprogram)
197 // FUNCTION NAME GOES HERE. Use `echo name | od -t x1' to get the hex. Each hex
198 // digit is specified using the format
16#XX#
199 .ascii
16#
5f#
16#
5f#
16#
63#
16#
6d#
16#
70#
16#
73#
16#
69#
16#
32#
16#
0#
// Function
name `__cmpsi2
'
200 .unalignedInitWord _picoMark_FUNCTION_BEGIN // DW_AT_low_pc
201 .unalignedInitWord _picoMark_FUNCTION_END // DW_AT_high_pc
203 .initByte 0x0 // end of compile unit children.
205 _picoMark_DEBUG_INFO_END=
207 //============================================================================
209 //============================================================================
212 // End of picoChip ASM file