From 05898c67c15d73fe50bd87fc939bd9ee6a4275ce Mon Sep 17 00:00:00 2001 From: David Gibson Date: Wed, 24 Feb 2010 18:22:17 +1100 Subject: dtc: Allow multiple labels on nodes and properties At present, both the grammar and our internal data structures mean that there can be only one label on a node or property. This is a fairly arbitrary constraint, given that any number of value labels can appear at the same point, and that in C you can have any number of labels on the same statement. This is pretty much a non-issue now, but it may become important with some of the extensions that Grant and I have in mind. It's not that hard to change, so this patch does so, allowing an arbitrary number of labels on any given node or property. As usual a testcase is added too. Signed-off-by: David Gibson Acked-by: Grant Likely --- flattree.c | 57 +++++++++++++++++++++++++++++++-------------------------- 1 file changed, 31 insertions(+), 26 deletions(-) (limited to 'flattree.c') diff --git a/flattree.c b/flattree.c index 8637407..ead0332 100644 --- a/flattree.c +++ b/flattree.c @@ -52,9 +52,9 @@ struct emitter { void (*string)(void *, char *, int); void (*align)(void *, int); void (*data)(void *, struct data); - void (*beginnode)(void *, const char *); - void (*endnode)(void *, const char *); - void (*property)(void *, const char *); + void (*beginnode)(void *, struct label *labels); + void (*endnode)(void *, struct label *labels); + void (*property)(void *, struct label *labels); }; static void bin_emit_cell(void *e, cell_t val) @@ -89,17 +89,17 @@ static void bin_emit_data(void *e, struct data d) *dtbuf = data_append_data(*dtbuf, d.val, d.len); } -static void bin_emit_beginnode(void *e, const char *label) +static void bin_emit_beginnode(void *e, struct label *labels) { bin_emit_cell(e, FDT_BEGIN_NODE); } -static void bin_emit_endnode(void *e, const char *label) +static void bin_emit_endnode(void *e, struct label *labels) { bin_emit_cell(e, FDT_END_NODE); } -static void bin_emit_property(void *e, const char *label) +static void bin_emit_property(void *e, struct label *labels) { bin_emit_cell(e, FDT_PROP); } @@ -191,37 +191,40 @@ static void asm_emit_data(void *e, struct data d) assert(off == d.len); } -static void asm_emit_beginnode(void *e, const char *label) +static void asm_emit_beginnode(void *e, struct label *labels) { FILE *f = e; + struct label *l; - if (label) { - fprintf(f, "\t.globl\t%s\n", label); - fprintf(f, "%s:\n", label); + for_each_label(labels, l) { + fprintf(f, "\t.globl\t%s\n", l->label); + fprintf(f, "%s:\n", l->label); } fprintf(f, "\t/* FDT_BEGIN_NODE */\n"); asm_emit_cell(e, FDT_BEGIN_NODE); } -static void asm_emit_endnode(void *e, const char *label) +static void asm_emit_endnode(void *e, struct label *labels) { FILE *f = e; + struct label *l; fprintf(f, "\t/* FDT_END_NODE */\n"); asm_emit_cell(e, FDT_END_NODE); - if (label) { - fprintf(f, "\t.globl\t%s_end\n", label); - fprintf(f, "%s_end:\n", label); + for_each_label(labels, l) { + fprintf(f, "\t.globl\t%s_end\n", l->label); + fprintf(f, "%s_end:\n", l->label); } } -static void asm_emit_property(void *e, const char *label) +static void asm_emit_property(void *e, struct label *labels) { FILE *f = e; + struct label *l; - if (label) { - fprintf(f, "\t.globl\t%s\n", label); - fprintf(f, "%s:\n", label); + for_each_label(labels, l) { + fprintf(f, "\t.globl\t%s\n", l->label); + fprintf(f, "%s:\n", l->label); } fprintf(f, "\t/* FDT_PROP */\n"); asm_emit_cell(e, FDT_PROP); @@ -260,7 +263,7 @@ static void flatten_tree(struct node *tree, struct emitter *emit, struct node *child; int seen_name_prop = 0; - emit->beginnode(etarget, tree->label); + emit->beginnode(etarget, tree->labels); if (vi->flags & FTF_FULLPATH) emit->string(etarget, tree->fullpath, 0); @@ -277,7 +280,7 @@ static void flatten_tree(struct node *tree, struct emitter *emit, nameoff = stringtable_insert(strbuf, prop->name); - emit->property(etarget, prop->label); + emit->property(etarget, prop->labels); emit->cell(etarget, prop->val.len); emit->cell(etarget, nameoff); @@ -304,7 +307,7 @@ static void flatten_tree(struct node *tree, struct emitter *emit, flatten_tree(child, emit, etarget, strbuf, vi); } - emit->endnode(etarget, tree->label); + emit->endnode(etarget, tree->labels); } static struct data flatten_reserve_list(struct reserve_info *reservelist, @@ -525,9 +528,11 @@ void dt_to_asm(FILE *f, struct boot_info *bi, int version) * as it appears .quad isn't available in some assemblers. */ for (re = bi->reservelist; re; re = re->next) { - if (re->label) { - fprintf(f, "\t.globl\t%s\n", re->label); - fprintf(f, "%s:\n", re->label); + struct label *l; + + for_each_label(re->labels, l) { + fprintf(f, "\t.globl\t%s\n", l->label); + fprintf(f, "%s:\n", l->label); } ASM_EMIT_BELONG(f, "0x%08x", (unsigned int)(re->re.address >> 32)); ASM_EMIT_BELONG(f, "0x%08x", @@ -684,7 +689,7 @@ static struct property *flat_read_property(struct inbuf *dtbuf, val = flat_read_data(dtbuf, proplen); - return build_property(name, val, NULL); + return build_property(name, val); } @@ -709,7 +714,7 @@ static struct reserve_info *flat_read_mem_reserve(struct inbuf *inb) if (re.size == 0) break; - new = build_reserve_entry(re.address, re.size, NULL); + new = build_reserve_entry(re.address, re.size); reservelist = add_reserve_entry(reservelist, new); } -- cgit v1.2.1