diff options
Diffstat (limited to 'fdt_internal.h')
| -rw-r--r-- | fdt_internal.h | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/fdt_internal.h b/fdt_internal.h index 1ac9d68..4d7ca47 100644 --- a/fdt_internal.h +++ b/fdt_internal.h @@ -100,12 +100,27 @@ static void *_fdt_grab_space(void *fdt, size_t len) { return _fdt_offset_ptr_w(fdt, offset); } -static int _fdt_add_string(void *fdt, const char *s) { +static const char *_fdt_find_string(const char *strtab, int tabsize, + const char *s) { + int len = dto_strlen(s) + 1; + const char *last = strtab + tabsize - len; + const char *p; + + for (p = strtab; p <= last; p++) + if (dto_memcmp(p, s, len) == 0) return p; + return NULL; +} + +static int _fdt_find_add_string(void *fdt, const char *s) { char *strtab = (char *)fdt + fdt_totalsize(fdt); + const char *p; int strtabsize = fdt_size_dt_strings(fdt); int len = dto_strlen(s) + 1; int struct_top, offset; + p = _fdt_find_string(strtab - strtabsize, strtabsize, s); + if (p) return p - strtab; + /* Add it */ offset = -strtabsize - len; struct_top = fdt_off_dt_struct(fdt) + fdt_size_dt_struct(fdt); @@ -128,7 +143,7 @@ static int fast_fdt_sw_property(void *fdt, const char *name, const void *val, FDT_SW_CHECK_HEADER(fdt); if (*pnameoff == 0) { - *pnameoff = _fdt_add_string(fdt, name); + *pnameoff = _fdt_find_add_string(fdt, name); if (*pnameoff == 0) return -FDT_ERR_NOSPACE; } |