本文整理汇总了Golang中sevki/org/build.Context.Printf方法的典型用法代码示例。如果您正苦于以下问题：Golang Context.Printf方法的具体用法？Golang Context.Printf怎么用？Golang Context.Printf使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类sevki/org/build.Context的用法示例。
在下文中一共展示了Context.Printf方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Golang代码示例。
示例1: Build
func (etc *ElfToC) Build(c *build.Context) error {
fileName := ""
if xf, err := c.Open(etc.Elf); err != nil {
return fmt.Errorf("open :%s", err.Error())
} else {
fileName = xf.Name()
xf.Close()
}
f, err := elf.Open(fileName)
if err != nil {
return err
}
var dataend, codeend, end uint64
var datastart, codestart, start uint64
datastart, codestart, start = math.MaxUint64, math.MaxUint64, math.MaxUint64
mem := []byte{}
for _, v := range f.Progs {
if v.Type != elf.PT_LOAD {
continue
}
c.Printf("processing %v\n", v)
// MUST alignt to 2M page boundary.
// then MUST allocate a []byte that
// is the right size. And MUST
// see if by some off chance it
// joins to a pre-existing segment.
// It's easier than it seems. We produce ONE text
// array and ONE data array. So it's a matter of creating
// a virtual memory space with an assumed starting point of
// 0x200000, and filling it. We just grow that as needed.
curstart := v.Vaddr & ^uint64(0xfff) // 0x1fffff)
curend := v.Vaddr + v.Memsz
c.Printf("s %x e %x\n", curstart, curend)
if curend > end {
nmem := make([]byte, curend)
copy(nmem, mem)
mem = nmem
}
if curstart < start {
start = curstart
}
if v.Flags&elf.PF_X == elf.PF_X {
if curstart < codestart {
codestart = curstart
}
if curend > codeend {
codeend = curend
}
c.Printf("code s %v e %v\n", codestart, codeend)
} else {
if curstart < datastart {
datastart = curstart
}
if curend > dataend {
dataend = curend
}
c.Printf("data s %v e %v\n", datastart, dataend)
}
for i := uint64(0); i < v.Filesz; i++ {
if amt, err := v.ReadAt(mem[v.Vaddr+i:], int64(i)); err != nil && err != io.EOF {
err := fmt.Errorf("%v: %v\n", amt, err)
c.Println(err)
return err
} else if amt == 0 {
if i < v.Filesz {
err := fmt.Errorf("%v: Short read: %v of %v\n", v, i, v.Filesz)
c.Println(err)
return err
}
break
} else {
i = i + uint64(amt)
c.Printf("i now %d\n", i)
}
}
c.Printf("Processed %v\n", v)
}
c.Printf("gencode\n")
// Gen code to stdout. For each file, create an array, a start, and an end variable.
outfile, err := c.Create(fmt.Sprintf("%s.h", etc.Name))
if err != nil {
return err
}
_, file := path.Split(etc.Elf)
gencode(outfile, file, "code", mem, codestart, codeend)
gencode(outfile, file, "data", mem, datastart, dataend)
return nil
}