diff options
author | Bob Wilson <bob.wilson@acm.org> | 2003-09-09 23:41:43 +0000 |
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committer | Bob Wilson <bob.wilson@acm.org> | 2003-09-09 23:41:43 +0000 |
commit | 1745fcbaff257e7333fce4b8dcea1d5f72dcc4da (patch) | |
tree | b386c82feb8fe9c3ef4775c6f812d0cb7b660ff1 | |
parent | 932644f03fce4dda6e686956f0a90e41901b075c (diff) | |
download | gdb-1745fcbaff257e7333fce4b8dcea1d5f72dcc4da.zip gdb-1745fcbaff257e7333fce4b8dcea1d5f72dcc4da.tar.gz gdb-1745fcbaff257e7333fce4b8dcea1d5f72dcc4da.tar.bz2 |
* config/tc-xtensa.c (xtensa_literal_pseudo): Remove code for
combining identical literals.
(expression_maybe_register): Remove call to find_lit_sym_translation.
(is_duplicate_expression, cache_literal, is_duplicate_literal,
add_lit_sym_translation, find_lit_sym_translation): Delete.
-rw-r--r-- | gas/ChangeLog | 8 | ||||
-rw-r--r-- | gas/config/tc-xtensa.c | 197 |
2 files changed, 9 insertions, 196 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog index 52e3608..bc9e697 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -1,3 +1,11 @@ +2003-09-09 Bob Wilson <bob.wilson@acm.org> + + * config/tc-xtensa.c (xtensa_literal_pseudo): Remove code for + combining identical literals. + (expression_maybe_register): Remove call to find_lit_sym_translation. + (is_duplicate_expression, cache_literal, is_duplicate_literal, + add_lit_sym_translation, find_lit_sym_translation): Delete. + 2003-09-07 Nick Clifton <nickc@redhat.com> * doc/as.texinfo (Comments): Comment character for PPC is #. diff --git a/gas/config/tc-xtensa.c b/gas/config/tc-xtensa.c index b4ea9e8..9e0349e 100644 --- a/gas/config/tc-xtensa.c +++ b/gas/config/tc-xtensa.c @@ -715,13 +715,6 @@ static void add_section_rename PARAMS ((char *, char *)); #endif -#ifdef XTENSA_COMBINE_LITERALS -static void find_lit_sym_translation - PARAMS ((expressionS *)); -static void add_lit_sym_translation - PARAMS ((char *, offsetT, symbolS *)); -#endif - /* ISA imported from bfd. */ extern xtensa_isa xtensa_default_isa; @@ -1441,15 +1434,8 @@ xtensa_literal_pseudo (ignored) int ignored ATTRIBUTE_UNUSED; { emit_state state; - char *base_name; -#ifdef XTENSA_COMBINE_LITERALS - char *next_name; - symbolS *duplicate; - bfd_boolean used_name = FALSE; - int offset = 0; -#endif + char *p, *base_name; char c; - char *p; expressionS expP; segT dest_seg; @@ -1485,21 +1471,7 @@ xtensa_literal_pseudo (ignored) } *p = 0; -#ifdef XTENSA_COMBINE_LITERALS - /* We need next name to start out equal to base_name, - but we modify it later to refer to a symbol and an offset. */ - next_name = xmalloc (strlen (base_name) + 1); - strcpy (next_name, base_name); - - /* We need a copy of base_name because we refer to it in the - lit_sym_translations and the source is somewhere in the input stream. */ - base_name = xmalloc (strlen (base_name) + 1); - strcpy (base_name, next_name); - -#else - colon (base_name); -#endif do { @@ -1507,41 +1479,12 @@ xtensa_literal_pseudo (ignored) expr (0, &expP); -#ifdef XTENSA_COMBINE_LITERALS - duplicate = is_duplicate_literal (&expP, dest_seg); - if (duplicate) - { - add_lit_sym_translation (base_name, offset, duplicate); - used_name = TRUE; - continue; - } - colon (next_name); -#endif - /* We only support 4-byte literals with .literal. */ emit_expr (&expP, 4); - -#ifdef XTENSA_COMBINE_LITERALS - cache_literal (next_name, &expP, dest_seg); - free (next_name); - - if (*input_line_pointer == ',') - { - offset += 4; - next_name = xmalloc (strlen (base_name) + - strlen (XTENSA_LIT_PLUS_OFFSET) + 10); - sprintf (next_name, "%s%s%d", - XTENSA_LIT_PLUS_OFFSET, base_name, offset); - } -#endif } while (*input_line_pointer == ','); *p = c; -#ifdef XTENSA_COMBINE_LITERALS - if (!used_name) - free (base_name); -#endif demand_empty_rest_of_line (); @@ -1708,9 +1651,6 @@ expression_maybe_register (opnd, tok) tok->X_add_symbol->sy_tc.plt = 1; input_line_pointer += strlen (plt_suffix); } -#ifdef XTENSA_COMBINE_LITERALS - find_lit_sym_translation (tok); -#endif } else { @@ -8872,138 +8812,3 @@ xtensa_section_rename (name) } #endif /* XTENSA_SECTION_RENAME */ - - -/* Combining identical literals. */ - -#ifdef XTENSA_COMBINE_LITERALS - -/* This code records all the .literal values that are ever seen and - detects duplicates so that identical values can be combined. This - is currently disabled because it's only half-baked. */ - -#define XTENSA_LIT_PLUS_OFFSET ".xtensa_litsym_offset_" - -/* TODO: make this into a more efficient data structure. */ -typedef struct literal_list_elem -{ - symbolS *sym; /* The symbol that points to this literal. */ - expressionS expr; /* The expression. */ - segT seg; - struct literal_list_elem *next; /* Next in the list. */ -} literal_list_elem; - -literal_list_elem *lit_cache = NULL; - -typedef struct lit_sym_translation -{ - char *name; /* This name. */ - offsetT offset; /* Plus this offset. */ - symbolS *sym; /* Should really mean this symbol. */ - struct lit_sym_translation *next; -} lit_sym_translation; - -lit_sym_translation *translations = NULL; - -static bfd_boolean is_duplicate_expression - PARAMS ((expressionS *, expressionS *)); -static void cache_literal - PARAMS ((char *sym_name, expressionS *, segT)); -static symbolS *is_duplicate_literal - PARAMS ((expressionS *, segT)); - - -static bfd_boolean -is_duplicate_expression (e1, e2) - expressionS *e1; - expressionS *e2; -{ - if (e1->X_op != e2->X_op) - return FALSE; - if (e1->X_add_symbol != e2->X_add_symbol) - return FALSE; - if (e1->X_op_symbol != e2->X_op_symbol) - return FALSE; - if (e1->X_add_number != e2->X_add_number) - return FALSE; - if (e1->X_unsigned != e2->X_unsigned) - return FALSE; - if (e1->X_md != e2->X_md) - return FALSE; - return TRUE; -} - - -static void -cache_literal (sym_name, expP, seg) - char *sym_name; - expressionS *expP; - segT seg; -{ - literal_list_elem *lit = xmalloc (sizeof (literal_list_elem)); - - lit->sym = symbol_find (sym_name); - lit->expr = *expP; - lit->seg = seg; - lit->next = lit_cache; - lit_cache = lit; -} - - -static symbolS * -is_duplicate_literal (expr, seg) - expressionS *expr; - segT seg; -{ - literal_list_elem *lit = lit_cache; - - while (lit != NULL) - { - if (is_duplicate_expression (&lit->expr, expr) && seg == lit->seg) - return lit->sym; - lit = lit->next; - } - - return NULL; -} - - -static void -add_lit_sym_translation (name, offset, target) - char * name; - offsetT offset; - symbolS * target; -{ - lit_sym_translation *lit_trans = xmalloc (sizeof (lit_sym_translation)); - - lit_trans->name = name; - lit_trans->offset = offset; - lit_trans->sym = target; - lit_trans->next = translations; - translations = lit_trans; -} - - -static void -find_lit_sym_translation (expr) - expressionS *expr; -{ - lit_sym_translation *lit_trans = translations; - - if (expr->X_op != O_symbol) - return; - - while (lit_trans != NULL) - { - if (lit_trans->offset == expr->X_add_number - && strcmp (lit_trans->name, S_GET_NAME (expr->X_add_symbol)) == 0) - { - expr->X_add_symbol = lit_trans->sym; - expr->X_add_number = 0; - return; - } - lit_trans = lit_trans->next; - } -} - -#endif /* XTENSA_COMBINE_LITERALS */ |