Moved:
memcmp from bootmap.h to libc.h (renamed from _memcmp)
strlen from sclp.c to libc.h (renamed from _strlen)
Added C standard functions:
isdigit
atoi
Added non-C standard function:
itostr
Signed-off-by: Collin L. Walling <wall...@linux.vnet.ibm.com>
Acked-by: Christian Borntraeger <borntrae...@de.ibm.com>
Reviewed-by: Janosch Frank <fran...@linux.vnet.ibm.com>
---
pc-bios/s390-ccw/Makefile | 2 +-
pc-bios/s390-ccw/bootmap.c | 4 +--
pc-bios/s390-ccw/bootmap.h | 16 +--------
pc-bios/s390-ccw/libc.c | 83 ++++++++++++++++++++++++++++++++++++++++++++++
pc-bios/s390-ccw/libc.h | 31 +++++++++++++++++
pc-bios/s390-ccw/main.c | 17 +---------
pc-bios/s390-ccw/sclp.c | 10 +-----
7 files changed, 120 insertions(+), 43 deletions(-)
create mode 100644 pc-bios/s390-ccw/libc.c
diff --git a/pc-bios/s390-ccw/Makefile b/pc-bios/s390-ccw/Makefile
index 6d0c2ee..9f7904f 100644
--- a/pc-bios/s390-ccw/Makefile
+++ b/pc-bios/s390-ccw/Makefile
@@ -9,7 +9,7 @@ $(call set-vpath, $(SRC_PATH)/pc-bios/s390-ccw)
.PHONY : all clean build-all
-OBJECTS = start.o main.o bootmap.o sclp.o virtio.o virtio-scsi.o
virtio-blkdev.o
+OBJECTS = start.o main.o bootmap.o sclp.o virtio.o virtio-scsi.o
virtio-blkdev.o libc.o
QEMU_CFLAGS := $(filter -W%, $(QEMU_CFLAGS))
QEMU_CFLAGS += -ffreestanding -fno-delete-null-pointer-checks -msoft-float
QEMU_CFLAGS += -march=z900 -fPIE -fno-strict-aliasing
diff --git a/pc-bios/s390-ccw/bootmap.c b/pc-bios/s390-ccw/bootmap.c
index 67a6123..6f8e30f 100644
--- a/pc-bios/s390-ccw/bootmap.c
+++ b/pc-bios/s390-ccw/bootmap.c
@@ -512,7 +512,7 @@ static bool is_iso_bc_entry_compatible(IsoBcSection *s)
"Failed to read image sector 0");
/* Checking bytes 8 - 32 for S390 Linux magic */
- return !_memcmp(magic_sec + 8, linux_s390_magic, 24);
+ return !memcmp(magic_sec + 8, linux_s390_magic, 24);
}
/* Location of the current sector of the directory */
@@ -641,7 +641,7 @@ static uint32_t find_iso_bc(void)
if (vd->type == VOL_DESC_TYPE_BOOT) {
IsoVdElTorito *et = &vd->vd.boot;
- if (!_memcmp(&et->el_torito[0], el_torito_magic, 32)) {
+ if (!memcmp(&et->el_torito[0], el_torito_magic, 32)) {
return bswap32(et->bc_offset);
}
}
diff --git a/pc-bios/s390-ccw/bootmap.h b/pc-bios/s390-ccw/bootmap.h
index cf99a4c..4980838 100644
--- a/pc-bios/s390-ccw/bootmap.h
+++ b/pc-bios/s390-ccw/bootmap.h
@@ -310,20 +310,6 @@ static inline bool magic_match(const void *data, const
void *magic)
return *((uint32_t *)data) == *((uint32_t *)magic);
}
-static inline int _memcmp(const void *s1, const void *s2, size_t n)
-{
- int i;
- const uint8_t *p1 = s1, *p2 = s2;
-
- for (i = 0; i < n; i++) {
- if (p1[i] != p2[i]) {
- return p1[i] > p2[i] ? 1 : -1;
- }
- }
-
- return 0;
-}
-
static inline uint32_t iso_733_to_u32(uint64_t x)
{
return (uint32_t)x;
@@ -416,7 +402,7 @@ const uint8_t vol_desc_magic[] = "CD001";
static inline bool is_iso_vd_valid(IsoVolDesc *vd)
{
- return !_memcmp(&vd->ident[0], vol_desc_magic, 5) &&
+ return !memcmp(&vd->ident[0], vol_desc_magic, 5) &&
vd->version == 0x1 &&
vd->type <= VOL_DESC_TYPE_PARTITION;
}
diff --git a/pc-bios/s390-ccw/libc.c b/pc-bios/s390-ccw/libc.c
new file mode 100644
index 0000000..3ce0fb7
--- /dev/null
+++ b/pc-bios/s390-ccw/libc.c
@@ -0,0 +1,83 @@
+/*
+ * libc-style definitions and functions
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include "libc.h"
+#include "s390-ccw.h"
+
+/**
+ * atoi:
+ * @str: the string to be converted.
+ *
+ * Given a string @str, convert it to an integer. Any non-numerical value
+ * will terminate the conversion.
+ *
+ * Returns: an integer converted from the string @str.
+ */
+int atoi(const char *str)
+{
+ int i;
+ int val = 0;
+
+ for (i = 0; str[i]; i++) {
+ char c = str[i];
+ if (!isdigit(c)) {
+ break;
+ }
+ val *= 10;
+ val += c - '0';
+ }
+
+ return val;
+}
+
+/**
+ * itostr:
+ * @num: the integer to be converted.
+ * @str: a pointer to a string to store the conversion.
+ * @len: the length of the passed string.
+ *
+ * Given an integer @num, convert it to a string. The string @str must be
+ * allocated beforehand. The resulting string will be null terminated and
+ * returned.
+ *
+ * Returns: the string @str of the converted integer @num.
+ */
+static char *_itostr(int num, char *str, size_t len)
+{
+ long num_len = 1;
+ int tmp = num;
+ int i;
+
+ /* Count length of num */
+ while ((tmp /= 10) > 0) {
+ num_len++;
+ }
+
+ /* Check if we have enough space for num and null */
+ if (len <= num_len) {
+ return 0;
+ }
+
+ /* Convert int to string */
+ for (i = num_len - 1; i >= 0; i--) {
+ str[i] = num % 10 + '0';
+ num /= 10;
+ }
+
+ str[num_len] = '\0';
+
+ return str;
+}
+
+char *itostr(int num, char *str, size_t len)
+{
+ char *tmp = _itostr(num, str, len);
+ IPL_assert(tmp != 0, "array too small for itostr conversion");
+ return tmp;
+}
diff --git a/pc-bios/s390-ccw/libc.h b/pc-bios/s390-ccw/libc.h
index 0142ea8..00268e3 100644
--- a/pc-bios/s390-ccw/libc.h
+++ b/pc-bios/s390-ccw/libc.h
@@ -42,4 +42,35 @@ static inline void *memcpy(void *s1, const void *s2, size_t
n)
return s1;
}
+static inline int memcmp(const void *s1, const void *s2, size_t n)
+{
+ int i;
+ const uint8_t *p1 = s1, *p2 = s2;
+
+ for (i = 0; i < n; i++) {
+ if (p1[i] != p2[i]) {
+ return p1[i] > p2[i] ? 1 : -1;
+ }
+ }
+
+ return 0;
+}
+
+static inline size_t strlen(const char *str)
+{
+ size_t i;
+ for (i = 0; *str; i++) {
+ str++;
+ }
+ return i;
+}
+
+static inline int isdigit(int c)
+{
+ return (c >= '0') && (c <= '9');
+}
+
+int atoi(const char *str);
+char *itostr(int num, char *str, size_t len);
+
#endif
diff --git a/pc-bios/s390-ccw/main.c b/pc-bios/s390-ccw/main.c
index 401e9db..a8ef120 100644
--- a/pc-bios/s390-ccw/main.c
+++ b/pc-bios/s390-ccw/main.c
@@ -40,22 +40,7 @@ void panic(const char *string)
unsigned int get_loadparm_index(void)
{
- const char *lp = loadparm;
- int i;
- unsigned int idx = 0;
-
- for (i = 0; i < 8; i++) {
- char c = lp[i];
-
- if (c < '0' || c > '9') {
- break;
- }
-
- idx *= 10;
- idx += c - '0';
- }
-
- return idx;
+ return atoi(loadparm);
}
static bool find_dev(Schib *schib, int dev_no)
diff --git a/pc-bios/s390-ccw/sclp.c b/pc-bios/s390-ccw/sclp.c
index b1fc8ff..486fce1 100644
--- a/pc-bios/s390-ccw/sclp.c
+++ b/pc-bios/s390-ccw/sclp.c
@@ -65,14 +65,6 @@ void sclp_setup(void)
sclp_set_write_mask();
}
-static int _strlen(const char *str)
-{
- int i;
- for (i = 0; *str; i++)
- str++;
- return i;
-}
-
long write(int fd, const void *str, size_t len)
{
WriteEventData *sccb = (void *)_sccb;
@@ -95,7 +87,7 @@ long write(int fd, const void *str, size_t len)
void sclp_print(const char *str)
{
- write(1, str, _strlen(str));
+ write(1, str, strlen(str));
}
void sclp_get_loadparm_ascii(char *loadparm)
--
2.7.4
