Messages in this thread Patch in this message | | | Date | Tue, 11 Jul 2006 12:42:15 +0800 | From | "Luke Yang" <> | Subject | [RFC] Add L1 symbol section supporting in kallsyms.c |
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Hi all,
We are maintaining linux kernel for the ADI Blackfin CPU which has L1 text and data rams. To make use of the L1 memory we add a new text section call text_l1. So kallsyms.c need to be modified to search the new section and generate the right Sysmap.map.
Currently we add the section support directly. Or do it in a more common way for future extending? Any comments? Thanks!
Index: git/linux-2.6/scripts/kallsyms.c =================================================================== --- git.orig/linux-2.6/scripts/kallsyms.c +++ git/linux-2.6/scripts/kallsyms.c @@ -12,6 +12,8 @@ * (25/Aug/2004) Paulo Marques <pmarques@grupopie.com> * Changed the compression method from stem compression to "table lookup" * compression + * (10/Jul/2006) Robin Getz <rgetz@blackfin.uclinux.org> + * Add _stext_l1, _etext_l1 for the L1 memory section in Blackfin. * * Table compression uses all the unused char codes on the symbols and * maps these to the most used substrings (tokens). For instance, it might @@ -44,6 +46,7 @@ struct sym_entry { static struct sym_entry *table; static unsigned int table_size, table_cnt; static unsigned long long _stext, _etext, _sinittext, _einittext, _sextratext, _eextratext; +static unsigned long long _stext_l1, _etext_l1; static int all_symbols = 0; static char symbol_prefix_char = '\0';
@@ -103,6 +106,10 @@ static int read_symbol(FILE *in, struct _sextratext = s->addr; else if (strcmp(sym, "_eextratext") == 0) _eextratext = s->addr; + else if (strcmp(sym, "_stext_l1" ) == 0) + _stext_l1 = s->addr; + else if (strcmp(sym, "_etext_l1" ) == 0) + _etext_l1 = s->addr; else if (toupper(stype) == 'A') { /* Keep these useful absolute symbols */ @@ -166,7 +173,8 @@ static int symbol_valid(struct sym_entry if (!all_symbols) { if ((s->addr < _stext || s->addr > _etext) && (s->addr < _sinittext || s->addr > _einittext) - && (s->addr < _sextratext || s->addr > _eextratext)) + && (s->addr < _sextratext || s->addr > _eextratext) + && (s->addr < _stext_l1 || s->addr > _etext_l1)) return 0; /* Corner case. Discard any symbols with the same value as * _etext _einittext or _eextratext; they can move between pass -- Best regards, Luke Yang luke.adi@gmail.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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