commit 78998efe6e308b35bbb723548e49d85b8d5d46de
parent 02741f466aea87b88a42ec4955132349ae38c8aa
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date: Tue, 14 Sep 2021 14:47:48 +0200
libc: Update arch/ppc/linux
This code is being updated out of the tree of scc and
it is time to synchroniza both copies now.
Diffstat:
5 files changed, 55 insertions(+), 34 deletions(-)
diff --git a/src/libc/arch/ppc/linux/.gitignore b/src/libc/arch/ppc/linux/.gitignore
@@ -0,0 +1,13 @@
+_close.s
+_creat.s
+_exit.s
+_getpid.s
+_kill.s
+_link.s
+_open.s
+_read.s
+_sys_brk.s
+_sys_errlist.c
+_unlink.s
+_waitpid.s
+_write.s
diff --git a/src/libc/arch/ppc/linux/Makefile b/src/libc/arch/ppc/linux/Makefile
@@ -1,38 +1,40 @@
.POSIX:
-PROJECTDIR =../../../../..
+PROJECTDIR = ../../../../..
+RULES = user
+
include $(PROJECTDIR)/scripts/rules.mk
include ../../../rules.mk
GENOBJS =\
- _Exit.$O\
- _read.$O\
- _write.$O\
- _open.$O\
_close.$O\
- _waitpid.$O\
- _create.$O\
+ _creat.$O\
+ _exit.$O\
+ _getpid.$O\
+ _kill.$O\
_link.$O\
+ _open.$O\
+ _read.$O\
+ _sys_brk.$O\
_unlink.$O\
- _getpid.$O\
- _brk.$O\
-
-GENSRC = $(GENOBJS:.$O=.s)
+ _waitpid.$O\
+ _write.$O\
-OBJS = \
+OBJS =\
+ _cerrno.o\
+ _sys_errlist.o\
$(GENOBJS)\
- _cerrno.$O\
-# Rules
+GENSRC = $(GENOBJS:.o=.s)
-all: $(OBJS) $(CRT)
+all: $(CRT) $(OBJS)
-crt.$O: ../crt-posix.s
+$(CRT): ../crt-posix.s
$(GENSRC): syscall.lst
./gensys.sh $(@:.s=)
clean:
- rm -f $(GENSRC)
+ rm -f $(GENSRC) _sys_errlist.c
include deps.mk
diff --git a/src/libc/arch/ppc/linux/_cerrno.s b/src/libc/arch/ppc/linux/_cerrno.s
@@ -1,12 +1,15 @@
.file "_cerrno.s"
+
+ .text
.globl _cerrno
_cerrno:
- cmpwi 0,0
- bne err
+ bso err
blr
+
err:
lis 14,errno@h
ori 14,14,errno@l
+ neg 3,3
stw 3,0(14)
xor 3,3,3
addi 3,3,-1
diff --git a/src/libc/arch/ppc/linux/gensys.sh b/src/libc/arch/ppc/linux/gensys.sh
@@ -1,17 +1,19 @@
#!/bin/sh
-awk '! /^#/ && $2 == "'$1'" {
- syscall=$2
- fname=$2".s"
+sed -n "
+ s/[ ]*#.*//
+ /$1/p" syscall.lst |
+while read num name nargs
+do
+cat <<EOF > $name.s
+ .file "$name.s"
- printf ("\t.file\t" \
- "\"%s\"\n" \
- "\t.globl\t%s\n" \
- "%s:\n",
- fname, syscall, syscall)
+ .globl $name
+$name:
+ li 0,$num
+ sc
+ mfcr 0
+ b _cerrno
+EOF
- printf ("\tli\t0,%d\n" \
- "\tsc\n" \
- "\tmfcr\t0\n" \
- "\tb\t_cerrno\n", $1)
-} ' syscall.lst >$1.s
+done
diff --git a/src/libc/arch/ppc/linux/syscall.lst b/src/libc/arch/ppc/linux/syscall.lst
@@ -1,5 +1,5 @@
#number name
-1 _Exit
+1 _exit
3 _read
4 _write
5 _open
@@ -9,4 +9,5 @@
9 _link
10 _unlink
20 _getpid
-45 _brk
+37 _kill
+45 _sys_brk
