| // Copyright (C) 2008-2014 Free Software Foundation, Inc. |
| // |
| // This file is part of GCC. |
| // |
| // GCC 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. |
| // |
| // GCC 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/>. |
| |
| // picoChip ASM file |
| //.file "clzsi2.S" |
| |
| .section .text |
| |
| .global __clzsi2 |
| __clzsi2: |
| _picoMark_FUNCTION_BEGIN= |
| |
| // picoChip Function Prologue : &__clzsi2 = 0 bytes |
| |
| // What value should be operated on? If the top word is empty |
| // then count the bits in the bottom word, and add 16. If the |
| // top word is not empty, then count the bits in the top word. |
| |
| // R4 stores the constant 0 |
| |
| sub.0 R1,0,r15 \ copy.1 16,r2 |
| copyeq r0,r1 |
| copyne 0,r2 |
| |
| // R1 now stores value to count, and R2 stores current bit offset. |
| sbc r1,r0 |
| asr.0 r1,15,r15 \ add.1 r0,1,r0 |
| jr (lr) \ copyne 0,r0 |
| =-> add.0 r0,r2,r0 |
| |
| _picoMark_FUNCTION_END= |
| |
| // picoChip Function Epilogue : __clzsi2 |
| |
| //============================================================================ |
| // 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 relevant 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 0x0 // <-- 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#63# 16#6C# 16#7A# 16#73# 16#69# 16#32# 16#0# // Function name `_clzsi2' |
| .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 |
| // End of picoChip ASM file |
