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[FIXED] compiler appends _exit code to binary output

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sjs 2009-05-19 18:09:28 -07:00
parent b7a4b408bb
commit d22e3b6306
4 changed files with 15 additions and 2 deletions
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2
elfwriter.c
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@ -277,7 +277,7 @@ main(int argc, const char *argv[])
}
fclose(fd);
printf("Writing x86 ELF binary to %s...\n", argv[1]);
printf("Writing x86 ELF binary to %s...\n", argv[3]);
result = elf_write(argv[3], code, code_size);
if (result < 0) {
printf("[error] elf_write failed.\n");

1
min.code Normal file
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@ -0,0 +1 @@
a=0

4
min2.asm Normal file
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@ -0,0 +1,4 @@
BITS 32
mov ebx,eax
mov eax,1
int 0x80

10
test.rb
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@ -1,6 +1,11 @@
require 'compiler'
require 'stringio'
X86_exit = [0x89, 0xc3, # mov ebx, eax (exit code)
0xb8, 1, 0, 0, 0, # mov eax, 1
0xcd, 0x80 # int 0x80
].pack('c*')
def error(msg) STDERR.puts(msg) end
def parse(input)
@ -33,7 +38,10 @@ def main(arg)
template = File.read("template.asm")
asm = interpolate(template, :data => data, :bss => bss, :code => code)
File.open("test.asm", "w") { |f| f.puts(asm) }
File.open("test.bin", "wb") { |f| f.write(binary) }
File.open("test.bin", "wb") { |f|
f.write(binary)
f.write(X86_exit)
}
end
main(ARGV[0].to_s)