scc

simple c99 compiler
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commit cbaa33552ffc4d811511544c8803303a1e4630d9
parent 99cc38df2baf6201cabaed55e39bb9d1815d1c41
Author: zerous Naveen Narayanan <zerous@simple-cc.org>
Date:   Mon, 20 Apr 2020 21:33:54 +0200

libc: Implement the following syscalls for ppc32

Exit
read
write
open
close
waitpid
creat
link
unlink
getpid

Diffstat:
Msrc/libc/arch/ppc32/linux/Makefile | 13++++++++++++-
Asrc/libc/arch/ppc32/linux/_cerrno.s | 12++++++++++++
Asrc/libc/arch/ppc32/linux/gensys.sh | 17+++++++++++++++++
Asrc/libc/arch/ppc32/linux/syscall.lst | 11+++++++++++
4 files changed, 52 insertions(+), 1 deletion(-)

diff --git a/src/libc/arch/ppc32/linux/Makefile b/src/libc/arch/ppc32/linux/Makefile @@ -3,12 +3,23 @@ PROJECTDIR =../../../../.. include $(PROJECTDIR)/scripts/rules.mk include ../../../rules.mk -GENOBJS = +GENOBJS =\ + _Exit.$O\ + _read.$O\ + _write.$O\ + _open.$O\ + _close.$O\ + _waitpid.$O\ + _create.$O\ + _link.$O\ + _unlink.$O\ + _getpid.$O\ GENSRC = $(GENOBJS:.$O=.s) OBJS = \ $(GENOBJS)\ + _cerrno.$O\ # Rules diff --git a/src/libc/arch/ppc32/linux/_cerrno.s b/src/libc/arch/ppc32/linux/_cerrno.s @@ -0,0 +1,12 @@ + .file "_cerrno.s" + .globl _cerrno +_cerrno: + cmpwi 0,0 + bne err + blr +err: + lis 0,errno@h + ori 0,0,errno@l + stw 3,0(0) + addi 3,3,-1 + blr diff --git a/src/libc/arch/ppc32/linux/gensys.sh b/src/libc/arch/ppc32/linux/gensys.sh @@ -0,0 +1,17 @@ +#!/bin/sh + +awk '! /^#/ && $2 == "'$1'" { + syscall=$2 + fname=$2".s" + + printf ("\t.file\t" \ + "\"%s\"\n" \ + "\t.globl\t%s\n" \ + "%s:\n", + fname, syscall, syscall) + + printf ("\tli\t0,%d\n" \ + "\tsc\n" \ + "\tmfcr\t0\n" \ + "\tb\t_cerrno\n", $1) +} ' syscall.lst >$1.s diff --git a/src/libc/arch/ppc32/linux/syscall.lst b/src/libc/arch/ppc32/linux/syscall.lst @@ -0,0 +1,11 @@ +#number name +1 _Exit +3 _read +4 _write +5 _open +6 _close +7 _waitpid +8 _creat +9 _link +10 _unlink +20 _getpid