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add _nsec() syscall 53 for binary compatibility with labs distribution

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the new syscall is added under the symbol _nsec() for
binary compatibility.

nsec() is still a library function reading /dev/bintime.
This commit is contained in:
cinap_lenrek 2014-05-20 05:06:31 +02:00
parent 7abf926bcf
commit 3207e8b6a4
8 changed files with 31 additions and 177 deletions
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21
sys/src/libc/9syscall/mkfile
View file

@ -6,7 +6,7 @@ install:V:
for(I in $SYS) {
i=`{echo $I|tr A-Z a-z}
n=`{sed -n '/[ ]'$I'[ ]/s/.* //p' sys.h}
if(~ $i exits) i=_exits
if(~ $i (exits nsec)) i=_$i
{switch($objtype){
case 68000 68020
echo TEXT $i'(SB)', 1, '$0'
@ -18,7 +18,7 @@ install:V:
echo MOVW R1, '0(FP)'
echo MOVW '$'$n, R1
echo SYSCALL
if(~ $i seek) {
if(~ $i (seek _nsec)) {
echo 'MOVW $-1,R5
BNE R1,R5,4(PC)
MOVW a+0(FP),R5
@ -41,7 +41,7 @@ install:V:
echo ADD '$4',R29
echo SYSCALL
echo ADD '$-4',R29
if(~ $i seek) { # untested so far - geoff
if(~ $i (seek _nsec)) { # untested so far - geoff
echo 'MOVW $-1,R5
BNE R1,R5,4(PC)
MOVW a+0(FP),R5
@ -53,7 +53,7 @@ install:V:
echo TEXT $i'(SB)', 1, '$0'
echo MOVL '$'$n, AX
echo INT '$'64
if(~ $i seek) {
if(~ $i (seek _nsec)) {
echo 'CMPL AX,$-1
JNE 4(PC)
MOVL a+0(FP),CX
@ -62,10 +62,9 @@ install:V:
}
echo RET
case amd64
if(~ $i seek)
echo TEXT _seek'(SB)', 1, '$0'
if not
echo TEXT $i'(SB)', 1, '$0'
j=$i
if(~ $i seek) j=_seek
echo TEXT $j'(SB)', 1, '$0'
echo MOVQ RARG, 'a0+0(FP)'
echo MOVQ '$'$n, RARG
echo SYSCALL
@ -75,7 +74,7 @@ install:V:
echo MOVW R7, '0(FP)'
echo MOVW '$'$n, R7
echo TA R0
if(~ $i seek) {
if(~ $i (seek _nsec)) {
echo 'CMP R7,$-1
BNE 4(PC)
MOVW a+0(FP),R8
@ -100,7 +99,7 @@ install:V:
echo MOVW R0, '0(FP)'
echo MOVW '$'$n, R0
echo SWI 0
if(~ $i seek) {
if(~ $i (seek _nsec)) {
echo 'CMP $-1,R0
BNE 4(PC)
MOVW a+0(FP),R1
@ -113,7 +112,7 @@ install:V:
echo MOVW R3, '0(FP)'
echo MOVW '$'$n, R3
echo SYSCALL
if(~ $i seek) {
if(~ $i (seek _nsec)) {
echo 'CMP R3,$-1
BNE 4(PC)
MOVW a+0(FP),R8

1
sys/src/libc/9syscall/sys.h
View file

@ -49,3 +49,4 @@
#define PREAD 50
#define PWRITE 51
#define TSEMACQUIRE 52
#define _NSEC 53