diff options
Diffstat (limited to 'prog/encodingc.go')
| -rw-r--r-- | prog/encodingc.go | 117 |
1 files changed, 0 insertions, 117 deletions
diff --git a/prog/encodingc.go b/prog/encodingc.go deleted file mode 100644 index c22180ce5..000000000 --- a/prog/encodingc.go +++ /dev/null @@ -1,117 +0,0 @@ -// Copyright 2015 syzkaller project authors. All rights reserved. -// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file. - -package prog - -import ( - "bytes" - "fmt" - "io" - "unsafe" - - "github.com/google/syzkaller/sys" -) - -func (p *Prog) WriteCSource() []byte { - exec := p.SerializeForExec() - buf := new(bytes.Buffer) - writeCSource(buf, exec) - return buf.Bytes() -} - -func writeCSource(w io.Writer, exec []byte) { - fmt.Fprintf(w, `// autogenerated by syzkaller (http://github.com/google/syzkaller) -#include <syscall.h> -#include <string.h> -#include <stdint.h> - -int main() -{ -`) - read := func() uintptr { - if len(exec) < 8 { - panic("exec program overflow") - } - v := *(*uint64)(unsafe.Pointer(&exec[0])) - exec = exec[8:] - return uintptr(v) - } - resultRef := func() string { - arg := read() - res := fmt.Sprintf("r%v", arg) - if opDiv := read(); opDiv != 0 { - res = fmt.Sprintf("%v/%v", res, opDiv) - } - if opAdd := read(); opAdd != 0 { - res = fmt.Sprintf("%v+%v", res, opAdd) - } - return res - } - lastCall := 0 - for n := 0; ; n++ { - switch instr := read(); instr { - case instrEOF: - fmt.Fprintf(w, "\treturn 0;\n}\n") - return - case instrCopyin: - addr := read() - typ := read() - size := read() - switch typ { - case execArgConst: - arg := read() - fmt.Fprintf(w, "\t*(uint%v_t*)0x%x = 0x%x;\n", size*8, addr, arg) - case execArgResult: - fmt.Fprintf(w, "\t*(uint%v_t*)0x%x = %v;\n", size*8, addr, resultRef()) - case execArgData: - data := exec[:size] - exec = exec[(size+7)/8*8:] - var esc []byte - for _, v := range data { - hex := func(v byte) byte { - if v < 10 { - return '0' + v - } - return 'a' + v - 10 - } - esc = append(esc, '\\', 'x', hex(v>>4), hex(v<<4>>4)) - } - fmt.Fprintf(w, "\tmemcpy((void*)0x%x, \"%s\", %v);\n", addr, esc, size) - default: - panic("bad argument type") - } - case instrCopyout: - addr := read() - size := read() - fmt.Fprintf(w, "\tlong r%v = -1;\n", n) - fmt.Fprintf(w, "\tif (r%v != -1)\n", lastCall) - fmt.Fprintf(w, "\t\tr%v = *(uint%v_t*)0x%x;\n", n, size*8, addr) - case instrSetPad, instrCheckPad: - read() // addr - read() // size - default: - // Normal syscall. - meta := sys.Calls[instr] - fmt.Fprintf(w, "\tlong r%v = syscall(SYS_%v", n, meta.CallName) - nargs := read() - for i := uintptr(0); i < nargs; i++ { - typ := read() - size := read() - _ = size - switch typ { - case execArgConst: - fmt.Fprintf(w, ", 0x%xul", read()) - case execArgResult: - fmt.Fprintf(w, ", %v", resultRef()) - default: - panic("unknown arg type") - } - } - for i := nargs; i < 6; i++ { - fmt.Fprintf(w, ", 0") - } - fmt.Fprintf(w, ");\n") - lastCall = n - } - } -} |
