Commit 3639f93f authored by Thomas Huth's avatar Thomas Huth Committed by Christian Borntraeger
Browse files

pc-bios/s390-ccw: Add a write() function for stdio 



The stdio functions from the SLOF libc need a write() function for
printing text to stdout/stderr. Let's implement this function by
refactoring the code from sclp_print().

Acked-by: default avatarCornelia Huck <cohuck@redhat.com>
Reviewed-by: default avatarDavid Hildenbrand <david@redhat.com>
Signed-off-by: default avatarThomas Huth <thuth@redhat.com>
Message-Id: <1499863793-18627-5-git-send-email-thuth@redhat.com>
Signed-off-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
parent 867e039a

pc-bios/s390-ccw/sclp.c

+14 −2
Original line number Diff line number Diff line
@@ -12,6 +12,8 @@ 
#include "s390-ccw.h"

#include "sclp.h"



long write(int fd, const void *str, size_t len);



static char _sccb[PAGE_SIZE] __attribute__((__aligned__(4096)));



const unsigned char ebc2asc[256] =
@@ -71,11 +73,14 @@ static int _strlen(const char *str) 
    return i;

}



void sclp_print(const char *str)

long write(int fd, const void *str, size_t len)

{

    int len = _strlen(str);

    WriteEventData *sccb = (void *)_sccb;



    if (fd != 1 && fd != 2) {

        return -EIO;

    }



    sccb->h.length = sizeof(WriteEventData) + len;

    sccb->h.function_code = SCLP_FC_NORMAL_WRITE;

    sccb->ebh.length = sizeof(EventBufferHeader) + len;
@@ -84,6 +89,13 @@ void sclp_print(const char *str) 
    memcpy(sccb->data, str, len);



    sclp_service_call(SCLP_CMD_WRITE_EVENT_DATA, sccb);



    return len;

}



void sclp_print(const char *str)

{

    write(1, str, _strlen(str));

}



void sclp_get_loadparm_ascii(char *loadparm)