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Make sure llee can deal with compressed bytecode too. 

llvm-svn: 17652
This commit is contained in:
Reid Spencer 2004-11-09 20:21:25 +00:00
parent 623dc9c5c0
commit abbefecf8e
1 changed files with 7 additions and 5 deletions
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12
llvm/tools/llee/ExecveHandler.c
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@ -21,10 +21,11 @@
#include <string.h>
/*
* This is the expected header for all valid LLVM bytecode files.
* The first four characters must be exactly this.
* These are the expected headers for all valid LLVM bytecode files.
* The first four characters must be one of these.
*/
static const char llvmHeader[] = "llvm";
static const char llvmHeaderUncompressed[] = "llvm";
static const char llvmHeaderCompressed[] = "llvc";
/*
* This replacement execve() function first checks the file to be executed
@ -34,7 +35,7 @@ static const char llvmHeader[] = "llvm";
int execve(const char *filename, char *const argv[], char *const envp[])
{
/* Open the file, test to see if first four characters are "llvm" */
size_t headerSize = strlen(llvmHeader);
size_t headerSize = strlen(llvmHeaderCompressed);
char header[headerSize];
char* realFilename = 0;
/*
@ -57,7 +58,8 @@ int execve(const char *filename, char *const argv[], char *const envp[])
ssize_t bytesRead = read(file, header, headerSize);
close(file);
if (bytesRead != (ssize_t)headerSize) return EIO;
if (!memcmp(llvmHeader, header, headerSize)) {
if (!memcmp(llvmHeaderCompressed, header, headerSize) ||
!memcmp(llvmHeaderUncompressed, header, headerSize)) {
/*
* This is a bytecode file, so execute the JIT with the program and
* parameters.