diff options
Diffstat (limited to 'config/picochip/libgccExtras/ashrsi3.asm')
| -rw-r--r-- | config/picochip/libgccExtras/ashrsi3.asm | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/config/picochip/libgccExtras/ashrsi3.asm b/config/picochip/libgccExtras/ashrsi3.asm new file mode 100644 index 0000000..da540d7 --- /dev/null +++ b/config/picochip/libgccExtras/ashrsi3.asm @@ -0,0 +1,207 @@ +// picoChip ASM file +// +// Support for 32-bit arithmetic shift right. +// +// Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc. +// Contributed by picoChip Designs Ltd. +// Maintained by Hariharan Sandanagobalane (hariharan@picochip.com) +// +// This file 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 2, or (at your option) any +// later version. +// +// In addition to the permissions in the GNU General Public License, the +// Free Software Foundation gives you unlimited permission to link the +// compiled version of this file into combinations with other programs, +// and to distribute those combinations without any restriction coming +// from the use of this file. (The General Public License restrictions +// do apply in other respects; for example, they cover modification of +// the file, and distribution when not linked into a combine +// executable.) +// +// This file 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. +// +// You should have received a copy of the GNU General Public License +// along with this program; see the file COPYING. If not, write to +// the Free Software Foundation, 51 Franklin Street, Fifth Floor, +// Boston, MA 02110-1301, USA. + +.section .text + +.global ___ashrsi3 +___ashrsi3: +_picoMark_FUNCTION_BEGIN= + +// picoChip Function Prologue : &___ashrsi3 = 0 bytes + + // if (R2 > 15) goto _L2 + SUB.0 15,R2,r15 + JMPLT _L2 +=-> COPY.0 R1,R3 + + LSR.0 R1,R2,R1 // R1 := R1 >> R2 + // if (R2 == 0) goto _L4 + SUB.0 R2,0,r15 + JMPEQ _L4 +=-> LSR.0 R0,R2,R0 // R2 := R0 >> R2 + + SUB.0 16,R2,R4 // R4 := R4 - R2 (HI) + ASR.0 R3,15,R5 // R5 = R1 >>{arith} 15 + LSL.0 R5,R4,R5 // R5 := R5 << R4 + LSL.0 R3,R4,R4 // R4 := R1 << R4 + OR.0 R5,R1,R1 // R3 := R5 IOR R3 (HI) + BRA _L4 + =-> OR.0 R4,R0,R0 // R2 := R4 IOR R0 (HI) +_L2: + ASR.0 R1,15,R1 // R4 = R1 >>{arith} 15 + SUB.0 16,R2,R5 // R5 := R5 - R2 (HI) + LSR.0 R3,R2,R0 // R2 := R1 >> R2 + LSL.0 R1,R5,R5 // R5 := R4 << R5 + OR.0 R5,R0,R5 // R2 := R5 IOR R2 (HI) + SUB.0 R2,16,r15 // R5 := R5 - R2 (HI) + COPYNE R5,R0 +_L4: + JR (R12) // Return to caller + +_picoMark_FUNCTION_END= + +// picoChip Function Epilogue : __ashrsi3 +//============================================================================ +// 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 relevent 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#61# 16#73# 16#68# 16#72# 16#73# 16#69# 16#33# 16#0# // Function name `_ashrsi3' +.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 |