diff options
Diffstat (limited to 'klibc/klibc/arch/arm/sysstub.ph')
| -rw-r--r-- | klibc/klibc/arch/arm/sysstub.ph | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/klibc/klibc/arch/arm/sysstub.ph b/klibc/klibc/arch/arm/sysstub.ph new file mode 100644 index 0000000000..bf953ccd80 --- /dev/null +++ b/klibc/klibc/arch/arm/sysstub.ph @@ -0,0 +1,44 @@ +# -*- perl -*- +# +# arch/arm/sysstub.ph +# +# Script to generate system call stubs +# + + +sub make_sysstub($$$$@) { + my($fname, $type, $sname, $stype, @args) = @_; + + open(OUT, '>', "syscalls/${fname}.S"); + print OUT "#include <asm/unistd.h>\n"; + + print OUT "\t.text\n"; + print OUT "\t.type\t${fname}, #function\n"; + print OUT "\t.globl ${fname}\n"; + print OUT "\t.align\t4\n"; + + print OUT "#ifndef __thumb__\n"; + + # ARM version first + print OUT "${fname}:\n"; + print OUT "\tstmfd\tsp!,{r4,r5,lr}\n"; + print OUT "\tldr\tr4,[sp,#12]\n"; + print OUT "\tldr\tr5,[sp,#16]\n"; + print OUT "\tswi\t# __NR_${sname}\n"; + print OUT "\tb\t__syscall_common\n"; + + print OUT "#else\n"; + + # Thumb version + print OUT "\t.thumb_func\n"; + print OUT "${fname}:\n"; + print OUT "\tpush\t{r4,r5,r7,pc}\n"; + print OUT "\tmov\tr7, # __NR_${sname}\n"; + print OUT "\tb\t__syscall_common\n"; + + print OUT "#endif\n"; + + print OUT "\t.size\t__syscall${i},.-__syscall${i}\n"; +} + +1; |