[PATCH v2 1/3] Use standard C string APIs in FDT helper
Anup Patel
Anup.Patel at wdc.com
Wed Jul 29 03:06:25 EDT 2020
> -----Original Message-----
> From: Abner Chang <abner.chang at hpe.com>
> Sent: 25 July 2020 15:01
> To: opensbi at lists.infradead.org
> Cc: abner.chang at hpe.com; Atish Patra <Atish.Patra at wdc.com>; Anup Patel
> <Anup.Patel at wdc.com>; Daniel Schaefer <daniel.schaefer at hpe.com>
> Subject: [PATCH v2 1/3] Use standard C string APIs in FDT helper
>
> Use strncmp instead of using sbi_strcmp directly in fdthelp.c.
> - This commit add implementation of sbi_strncmp.
>
> Signed-off-by: Abner Chang <abner.chang at hpe.com>
> Reviewed-by: Atish Patra <atish.patra at wdc.com>
> Reviewed-by: Anup Patel <anup.patel at wdc.com>
>
> Cc: Atish Patra <atish.patra at wdc.com>
> Cc: Anup Patel <anup.patel at wdc.com>
> Cc: Daniel Schaefer <daniel.schaefer at hpe.com>
> ---
> include/sbi/sbi_string.h | 7 +++++++
> lib/sbi/sbi_string.c | 13 +++++++++++++
> 2 files changed, 20 insertions(+)
>
> diff --git a/include/sbi/sbi_string.h b/include/sbi/sbi_string.h index
> 338075f..b7c2bc2 100644
> --- a/include/sbi/sbi_string.h
> +++ b/include/sbi/sbi_string.h
> @@ -12,8 +12,15 @@
>
> #include <sbi/sbi_types.h>
>
> +/*
> + Provides sbi_strcmp for the completeness of supporting string functions.
> + it is not recommended to use sbi_strcmp() but use sbi_strncmp instead.
> +*/
> +
> int sbi_strcmp(const char *a, const char *b);
>
> +int sbi_strncmp(const char *a, const char *b, size_t count);
> +
> size_t sbi_strlen(const char *str);
>
> size_t sbi_strnlen(const char *str, size_t count); diff --git
> a/lib/sbi/sbi_string.c b/lib/sbi/sbi_string.c index 38b700b..7805ba4 100644
> --- a/lib/sbi/sbi_string.c
> +++ b/lib/sbi/sbi_string.c
> @@ -14,6 +14,10 @@
>
> #include <sbi/sbi_string.h>
>
> +/*
> + Provides sbi_strcmp for the completeness of supporting string functions.
> + it is not recommended to use sbi_strcmp() but use sbi_strncmp instead.
> +*/
> int sbi_strcmp(const char *a, const char *b) {
> /* search first diff or end of string */ @@ -23,6 +27,15 @@ int
> sbi_strcmp(const char *a, const char *b)
> return *a - *b;
> }
>
> +int sbi_strncmp(const char *a, const char *b, size_t count) {
> + /* search first diff or end of string */
> + for (; count > 0 && *a == *b && *a != '\0'; a++, b++, count--)
> + ;
> +
> + return *a - *b;
> +}
> +
> size_t sbi_strlen(const char *str)
> {
> unsigned long ret = 0;
> --
> 2.25.0
Fixed patch subject at time of applying patch.
Applied this patch to the riscv/opensbi repo.
Thanks,
Anup
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