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comparison gcc/config/picochip/libgccExtras/clzsi2.asm @ 0:a06113de4d67

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first commit
author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
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children 77e2b8dfacca
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-1:000000000000 0:a06113de4d67
1 // picoChip ASM file
2 //.file "clzsi2.asm"
3
4 .section .text
5
6 .global __clzsi2
7 __clzsi2:
8 _picoMark_FUNCTION_BEGIN=
9
10 // picoChip Function Prologue : &__clzsi2 = 0 bytes
11
12 // What value should be operated on? If the top word is empty
13 // then count the bits in the bottom word, and add 16. If the
14 // top word is not empty, then count the bits in the top word.
15
16 // R4 stores the constant 0
17
18 sub.0 R1,0,r15 \ copy.1 16,r2
19 copyeq r0,r1
20 copyne 0,r2
21
22 // R1 now stores value to count, and R2 stores current bit offset.
23 sbc r1,r0
24 asr.0 r1,15,r15 \ add.1 r0,1,r0
25 jr (lr) \ copyne 0,r0
26 =-> add.0 r0,r2,r0
27
28 _picoMark_FUNCTION_END=
29
30 // picoChip Function Epilogue : __clzsi2
31
32 //============================================================================
33 // All DWARF information between this marker, and the END OF DWARF
34 // marker should be included in the source file. Search for
35 // FUNCTION_STACK_SIZE_GOES_HERE and FUNCTION NAME GOES HERE, and
36 // provide the relevent information. Add markers called
37 // _picoMark_FUNCTION_BEGIN and _picoMark_FUNCTION_END around the
38 // function in question.
39 //============================================================================
40
41 //============================================================================
42 // Frame information.
43 //============================================================================
44
45 .section .debug_frame
46 _picoMark_DebugFrame=
47
48 // Common CIE header.
49 .unalignedInitLong _picoMark_CieEnd-_picoMark_CieBegin
50 _picoMark_CieBegin=
51 .unalignedInitLong 0xffffffff
52 .initByte 0x1 // CIE Version
53 .ascii 16#0# // CIE Augmentation
54 .uleb128 0x1 // CIE Code Alignment Factor
55 .sleb128 2 // CIE Data Alignment Factor
56 .initByte 0xc // CIE RA Column
57 .initByte 0xc // DW_CFA_def_cfa
58 .uleb128 0xd
59 .uleb128 0x0
60 .align 2
61 _picoMark_CieEnd=
62
63 // FDE
64 _picoMark_LSFDE0I900821033007563=
65 .unalignedInitLong _picoMark_FdeEnd-_picoMark_FdeBegin
66 _picoMark_FdeBegin=
67 .unalignedInitLong _picoMark_DebugFrame // FDE CIE offset
68 .unalignedInitWord _picoMark_FUNCTION_BEGIN // FDE initial location
69 .unalignedInitWord _picoMark_FUNCTION_END-_picoMark_FUNCTION_BEGIN
70 .initByte 0xe // DW_CFA_def_cfa_offset
71 .uleb128 0x0 // <-- FUNCTION_STACK_SIZE_GOES_HERE
72 .initByte 0x4 // DW_CFA_advance_loc4
73 .unalignedInitLong _picoMark_FUNCTION_END-_picoMark_FUNCTION_BEGIN
74 .initByte 0xe // DW_CFA_def_cfa_offset
75 .uleb128 0x0
76 .align 2
77 _picoMark_FdeEnd=
78
79 //============================================================================
80 // Abbrevation information.
81 //============================================================================
82
83 .section .debug_abbrev
84 _picoMark_ABBREVIATIONS=
85
86 .section .debug_abbrev
87 .uleb128 0x1 // (abbrev code)
88 .uleb128 0x11 // (TAG: DW_TAG_compile_unit)
89 .initByte 0x1 // DW_children_yes
90 .uleb128 0x10 // (DW_AT_stmt_list)
91 .uleb128 0x6 // (DW_FORM_data4)
92 .uleb128 0x12 // (DW_AT_high_pc)
93 .uleb128 0x1 // (DW_FORM_addr)
94 .uleb128 0x11 // (DW_AT_low_pc)
95 .uleb128 0x1 // (DW_FORM_addr)
96 .uleb128 0x25 // (DW_AT_producer)
97 .uleb128 0x8 // (DW_FORM_string)
98 .uleb128 0x13 // (DW_AT_language)
99 .uleb128 0x5 // (DW_FORM_data2)
100 .uleb128 0x3 // (DW_AT_name)
101 .uleb128 0x8 // (DW_FORM_string)
102 .initByte 0x0
103 .initByte 0x0
104
105 .uleb128 0x2 ;# (abbrev code)
106 .uleb128 0x2e ;# (TAG: DW_TAG_subprogram)
107 .initByte 0x0 ;# DW_children_no
108 .uleb128 0x3 ;# (DW_AT_name)
109 .uleb128 0x8 ;# (DW_FORM_string)
110 .uleb128 0x11 ;# (DW_AT_low_pc)
111 .uleb128 0x1 ;# (DW_FORM_addr)
112 .uleb128 0x12 ;# (DW_AT_high_pc)
113 .uleb128 0x1 ;# (DW_FORM_addr)
114 .initByte 0x0
115 .initByte 0x0
116
117 .initByte 0x0
118
119 //============================================================================
120 // Line information. DwarfLib requires this to be present, but it can
121 // be empty.
122 //============================================================================
123
124 .section .debug_line
125 _picoMark_LINES=
126
127 //============================================================================
128 // Debug Information
129 //============================================================================
130 .section .debug_info
131
132 //Fixed header.
133 .unalignedInitLong _picoMark_DEBUG_INFO_END-_picoMark_DEBUG_INFO_BEGIN
134 _picoMark_DEBUG_INFO_BEGIN=
135 .unalignedInitWord 0x2
136 .unalignedInitLong _picoMark_ABBREVIATIONS
137 .initByte 0x2
138
139 // Compile unit information.
140 .uleb128 0x1 // (DIE 0xb) DW_TAG_compile_unit)
141 .unalignedInitLong _picoMark_LINES
142 .unalignedInitWord _picoMark_FUNCTION_END
143 .unalignedInitWord _picoMark_FUNCTION_BEGIN
144 // Producer is `picoChip'
145 .ascii 16#70# 16#69# 16#63# 16#6f# 16#43# 16#68# 16#69# 16#70# 16#00#
146 .unalignedInitWord 0xcafe // ASM language
147 .ascii 16#0# // Name. DwarfLib expects this to be present.
148
149 .uleb128 0x2 ;# (DIE DW_TAG_subprogram)
150
151 // FUNCTION NAME GOES HERE. Use `echo name | od -t x1' to get the hex. Each hex
152 // digit is specified using the format 16#XX#
153 .ascii 16#5F# 16#63# 16#6C# 16#7A# 16#73# 16#69# 16#32# 16#0# // Function name `_clzsi2'
154 .unalignedInitWord _picoMark_FUNCTION_BEGIN // DW_AT_low_pc
155 .unalignedInitWord _picoMark_FUNCTION_END // DW_AT_high_pc
156
157 .initByte 0x0 // end of compile unit children.
158
159 _picoMark_DEBUG_INFO_END=
160
161 //============================================================================
162 // END OF DWARF
163 //============================================================================
164
165 .section .endFile
166 // End of picoChip ASM file