195 lines
6.4 KiB
ArmAsm
195 lines
6.4 KiB
ArmAsm
// picoChip ASM file
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//
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// Support for 64-bit addition.
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//
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// Copyright (C) 2003-2013 Free Software Foundation, Inc.
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// Contributed by Picochip Ltd.
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// Maintained by Hariharan Sandanagobalane (hariharan@picochip.com)
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//
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// This file is free software; you can redistribute it and/or modify it
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// under the terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option) any
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// later version.
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//
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// This file is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License 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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.section .text
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.align 8
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.global __adddi3
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__adddi3:
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_picoMark_FUNCTION_BEGIN=
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// picoChip Function Prologue : &__adddi3 = 12 bytes
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// The first operand of add is completely in registers r[2-5]
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// The second operand of sub is in stack FP(0-3)
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// and result need to be written pointed to by the register r0.
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// All we need to do is to load the appropriate values, add them
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// appropriately (with add or addc ) and then store the values back.
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ldw (FP)0, r1
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stl r[7:6], (FP)-1
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add.0 r2, r1, r6
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ldw (FP)1, r1
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addc.0 r3, r1, r7
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ldl (FP)1, r[3:2]
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stl r[7:6], (r0)0
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addc.0 r4, r2, r6
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addc.0 r5, r3, r7
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stl r[7:6], (r0)1
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jr (r12)
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=-> ldl (FP)-1, r[7:6]
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_picoMark_FUNCTION_END=
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// picoChip Function Epilogue : __adddi3
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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 relevant 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 0xe // <-- 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#61# 16#64# 16#64# 16#63# 16#69# 16#33# 16#0# // Function name `_adddi3'
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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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