diff options
Diffstat (limited to 'crypto/chacha/chacha_vec_arm_generate.go')
| -rw-r--r-- | crypto/chacha/chacha_vec_arm_generate.go | 153 |
1 files changed, 0 insertions, 153 deletions
diff --git a/crypto/chacha/chacha_vec_arm_generate.go b/crypto/chacha/chacha_vec_arm_generate.go deleted file mode 100644 index 82aa847f..00000000 --- a/crypto/chacha/chacha_vec_arm_generate.go +++ /dev/null @@ -1,153 +0,0 @@ -// Copyright (c) 2014, Google Inc. -// -// Permission to use, copy, modify, and/or distribute this software for any -// purpose with or without fee is hereby granted, provided that the above -// copyright notice and this permission notice appear in all copies. -// -// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES -// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF -// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY -// SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES -// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION -// OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN -// CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - -// This package generates chacha_vec_arm.S from chacha_vec.c. Install the -// arm-linux-gnueabihf-gcc compiler as described in BUILDING.md. Then: -// `(cd crypto/chacha && go run chacha_vec_arm_generate.go)`. - -package main - -import ( - "bufio" - "bytes" - "os" - "os/exec" - "strings" -) - -const defaultCompiler = "/opt/gcc-linaro-4.9-2014.11-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-gcc" - -func main() { - compiler := defaultCompiler - if len(os.Args) > 1 { - compiler = os.Args[1] - } - - args := []string{ - "-O3", - "-mcpu=cortex-a8", - "-mfpu=neon", - "-fpic", - "-DASM_GEN", - "-I", "../../include", - "-S", "chacha_vec.c", - "-o", "-", - } - - output, err := os.OpenFile("chacha_vec_arm.S", os.O_CREATE|os.O_TRUNC|os.O_WRONLY, 0644) - if err != nil { - panic(err) - } - defer output.Close() - - output.WriteString(preamble) - output.WriteString(compiler) - output.WriteString(" ") - output.WriteString(strings.Join(args, " ")) - output.WriteString("\n\n#if !defined(OPENSSL_NO_ASM)\n") - output.WriteString("#if defined(__arm__)\n\n") - - cmd := exec.Command(compiler, args...) - cmd.Stderr = os.Stderr - asm, err := cmd.StdoutPipe() - if err != nil { - panic(err) - } - if err := cmd.Start(); err != nil { - panic(err) - } - - attr28 := []byte(".eabi_attribute 28,") - globalDirective := []byte(".global\t") - newLine := []byte("\n") - attr28Handled := false - - scanner := bufio.NewScanner(asm) - for scanner.Scan() { - line := scanner.Bytes() - - if bytes.Contains(line, attr28) { - output.WriteString(attr28Block) - attr28Handled = true - continue - } - - output.Write(line) - output.Write(newLine) - - if i := bytes.Index(line, globalDirective); i >= 0 { - output.Write(line[:i]) - output.WriteString(".hidden\t") - output.Write(line[i+len(globalDirective):]) - output.Write(newLine) - } - } - - if err := scanner.Err(); err != nil { - panic(err) - } - - if !attr28Handled { - panic("EABI attribute 28 not seen in processing") - } - - if err := cmd.Wait(); err != nil { - panic(err) - } - - output.WriteString(trailer) -} - -const preamble = `# Copyright (c) 2014, Google Inc. -# -# Permission to use, copy, modify, and/or distribute this software for any -# purpose with or without fee is hereby granted, provided that the above -# copyright notice and this permission notice appear in all copies. -# -# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES -# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF -# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY -# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES -# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION -# OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN -# CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - -# This file contains a pre-compiled version of chacha_vec.c for ARM. This is -# needed to support switching on NEON code at runtime. If the whole of OpenSSL -# were to be compiled with the needed flags to build chacha_vec.c, then it -# wouldn't be possible to run on non-NEON systems. -# -# This file was generated by chacha_vec_arm_generate.go using the following -# compiler command: -# -# ` - -const attr28Block = ` -# EABI attribute 28 sets whether VFP register arguments were used to build this -# file. If object files are inconsistent on this point, the linker will refuse -# to link them. Thus we report whatever the compiler expects since we don't use -# VFP arguments. - -#if defined(__ARM_PCS_VFP) - .eabi_attribute 28, 1 -#else - .eabi_attribute 28, 0 -#endif - -` - -const trailer = ` -#endif /* __arm__ */ -#endif /* !OPENSSL_NO_ASM */ -` |