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190 lines
6.1 KiB
ArmAsm
190 lines
6.1 KiB
ArmAsm
// Copyright (C) 2008, 2011 Free Software Foundation, Inc.
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//
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// This file is part of GCC.
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//
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// GCC is free software; you can redistribute it and/or modify it under
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// the terms of the GNU General Public License as published by the Free
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// Software Foundation; either version 3, or (at your option) any later
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// version.
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//
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// GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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//
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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//
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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// picoChip ASM file
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//.file "clzsi2.S"
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.section .text
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.global __clzsi2
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__clzsi2:
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_picoMark_FUNCTION_BEGIN=
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// picoChip Function Prologue : &__clzsi2 = 0 bytes
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// What value should be operated on? If the top word is empty
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// then count the bits in the bottom word, and add 16. If the
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// top word is not empty, then count the bits in the top word.
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// R4 stores the constant 0
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sub.0 R1,0,r15 \ copy.1 16,r2
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copyeq r0,r1
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copyne 0,r2
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// R1 now stores value to count, and R2 stores current bit offset.
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sbc r1,r0
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asr.0 r1,15,r15 \ add.1 r0,1,r0
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jr (lr) \ copyne 0,r0
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=-> add.0 r0,r2,r0
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_picoMark_FUNCTION_END=
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// picoChip Function Epilogue : __clzsi2
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//============================================================================
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// All DWARF information between this marker, and the END OF DWARF
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// marker should be included in the source file. Search for
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// FUNCTION_STACK_SIZE_GOES_HERE and FUNCTION NAME GOES HERE, and
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// provide the relevent information. Add markers called
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// _picoMark_FUNCTION_BEGIN and _picoMark_FUNCTION_END around the
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// function in question.
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//============================================================================
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//============================================================================
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// Frame information.
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//============================================================================
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.section .debug_frame
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_picoMark_DebugFrame=
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// Common CIE header.
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.unalignedInitLong _picoMark_CieEnd-_picoMark_CieBegin
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_picoMark_CieBegin=
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.unalignedInitLong 0xffffffff
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.initByte 0x1 // CIE Version
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.ascii 16#0# // CIE Augmentation
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.uleb128 0x1 // CIE Code Alignment Factor
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.sleb128 2 // CIE Data Alignment Factor
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.initByte 0xc // CIE RA Column
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.initByte 0xc // DW_CFA_def_cfa
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.uleb128 0xd
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.uleb128 0x0
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.align 2
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_picoMark_CieEnd=
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// FDE
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_picoMark_LSFDE0I900821033007563=
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.unalignedInitLong _picoMark_FdeEnd-_picoMark_FdeBegin
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_picoMark_FdeBegin=
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.unalignedInitLong _picoMark_DebugFrame // FDE CIE offset
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.unalignedInitWord _picoMark_FUNCTION_BEGIN // FDE initial location
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.unalignedInitWord _picoMark_FUNCTION_END-_picoMark_FUNCTION_BEGIN
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.initByte 0xe // DW_CFA_def_cfa_offset
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.uleb128 0x0 // <-- FUNCTION_STACK_SIZE_GOES_HERE
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.initByte 0x4 // DW_CFA_advance_loc4
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.unalignedInitLong _picoMark_FUNCTION_END-_picoMark_FUNCTION_BEGIN
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.initByte 0xe // DW_CFA_def_cfa_offset
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.uleb128 0x0
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.align 2
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_picoMark_FdeEnd=
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//============================================================================
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// Abbrevation information.
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//============================================================================
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.section .debug_abbrev
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_picoMark_ABBREVIATIONS=
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.section .debug_abbrev
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.uleb128 0x1 // (abbrev code)
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.uleb128 0x11 // (TAG: DW_TAG_compile_unit)
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.initByte 0x1 // DW_children_yes
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.uleb128 0x10 // (DW_AT_stmt_list)
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.uleb128 0x6 // (DW_FORM_data4)
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.uleb128 0x12 // (DW_AT_high_pc)
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.uleb128 0x1 // (DW_FORM_addr)
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.uleb128 0x11 // (DW_AT_low_pc)
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.uleb128 0x1 // (DW_FORM_addr)
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.uleb128 0x25 // (DW_AT_producer)
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.uleb128 0x8 // (DW_FORM_string)
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.uleb128 0x13 // (DW_AT_language)
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.uleb128 0x5 // (DW_FORM_data2)
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.uleb128 0x3 // (DW_AT_name)
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.uleb128 0x8 // (DW_FORM_string)
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.initByte 0x0
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.initByte 0x0
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.uleb128 0x2 ;# (abbrev code)
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.uleb128 0x2e ;# (TAG: DW_TAG_subprogram)
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.initByte 0x0 ;# DW_children_no
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.uleb128 0x3 ;# (DW_AT_name)
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.uleb128 0x8 ;# (DW_FORM_string)
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.uleb128 0x11 ;# (DW_AT_low_pc)
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.uleb128 0x1 ;# (DW_FORM_addr)
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.uleb128 0x12 ;# (DW_AT_high_pc)
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.uleb128 0x1 ;# (DW_FORM_addr)
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.initByte 0x0
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.initByte 0x0
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.initByte 0x0
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//============================================================================
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// Line information. DwarfLib requires this to be present, but it can
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// be empty.
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//============================================================================
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.section .debug_line
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_picoMark_LINES=
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//============================================================================
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// Debug Information
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//============================================================================
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.section .debug_info
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//Fixed header.
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.unalignedInitLong _picoMark_DEBUG_INFO_END-_picoMark_DEBUG_INFO_BEGIN
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_picoMark_DEBUG_INFO_BEGIN=
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.unalignedInitWord 0x2
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.unalignedInitLong _picoMark_ABBREVIATIONS
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.initByte 0x2
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// Compile unit information.
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.uleb128 0x1 // (DIE 0xb) DW_TAG_compile_unit)
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.unalignedInitLong _picoMark_LINES
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.unalignedInitWord _picoMark_FUNCTION_END
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.unalignedInitWord _picoMark_FUNCTION_BEGIN
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// Producer is `picoChip'
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.ascii 16#70# 16#69# 16#63# 16#6f# 16#43# 16#68# 16#69# 16#70# 16#00#
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.unalignedInitWord 0xcafe // ASM language
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.ascii 16#0# // Name. DwarfLib expects this to be present.
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.uleb128 0x2 ;# (DIE DW_TAG_subprogram)
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// FUNCTION NAME GOES HERE. Use `echo name | od -t x1' to get the hex. Each hex
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// digit is specified using the format 16#XX#
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.ascii 16#5F# 16#63# 16#6C# 16#7A# 16#73# 16#69# 16#32# 16#0# // Function name `_clzsi2'
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.unalignedInitWord _picoMark_FUNCTION_BEGIN // DW_AT_low_pc
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.unalignedInitWord _picoMark_FUNCTION_END // DW_AT_high_pc
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.initByte 0x0 // end of compile unit children.
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_picoMark_DEBUG_INFO_END=
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//============================================================================
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// END OF DWARF
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//============================================================================
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.section .endFile
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// End of picoChip ASM file
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