parms:
parm
{ push_parm_decl ($1); }
/* This is what appears inside the parens in a function declarator.
Is value is represented in the format that grokdeclarator expects. */
parmlist_2: /* empty */
{ $$ = get_parm_info (0); }
| parms
{ $$ = get_parm_info (1); }
| parms ‘,‘ ELLIPSIS
{ $$ = get_parm_info (0); }
ELLIPSIS 表示...
/* Given a parsed parameter declaration,
decode it into a PARM_DECL and push that on the current binding level. */<tree_list 95680表示push_parm_decl ()函数的参数。
<parm_decl 941c0表示grokdeclarator ()函数的返回结果。
in push_parm_decl
<tree_list 95680 permanent
purpose <tree_list 95650 permanent
value <identifier_node 82038 char permanent global <type_decl 82650 char>
chain <tree_list 95638 permanent
value <identifier_node 82210 const permanent chain <tree_list 95638>
value <indirect_ref 95668 permanent
in build_pointer_type
<integer_type 91130 char readonly permanent QI
size <integer_cst 82638 type <integer_type 82848* unsigned int> literal permanent 1
align 8 size_unit 8 sep_unit 8 symtab 0
sep <integer_cst 82608 type <integer_type 825bc* char> literal permanent -128 precision 8 min <integer_cst 82608 -128>
max <integer_cst 82620 type <integer_type 825bc* char> literal permanent 127
pointer_to_this <pointer_type 9117c>
<parm_decl 941c0
type <pointer_type 9117c
type <integer_type 91130 char readonly permanent QI
size <integer_cst 82638 literal permanent 1
align 8 size_unit 8 sep_unit 8 symtab 0
sep <integer_cst 82608 literal permanent -128 precision 8 min <integer_cst 82608 -128>
max <integer_cst 82620 literal permanent 127
pointer_to_this <pointer_type 9117c>
permanent unsigned SI
size <integer_cst 8254c literal permanent 4
align 32 size_unit 8 sep_unit 32 symtab 0
chain <function_type 912c0>
unsigned SI file /usr/include/stdio.h line 214 size <integer_cst 8254c 4>
align 32 size_unit 8 offset 0 arguments <pointer_type 9117c>
in finish_decl
<parm_decl 941c0
type <pointer_type 9117c
type <integer_type 91130 char readonly permanent QI
size <integer_cst 82638 literal permanent 1
align 8 size_unit 8 sep_unit 8 symtab 0
sep <integer_cst 82608 literal permanent -128 precision 8 min <integer_cst 82608 -128>
max <integer_cst 82620 literal permanent 127
pointer_to_this <pointer_type 9117c>
permanent unsigned SI
size <integer_cst 8254c literal permanent 4
align 32 size_unit 8 sep_unit 32 symtab 0
chain <function_type 912c0>
unsigned SI file /usr/include/stdio.h line 214 size <integer_cst 8254c 4>
align 32 size_unit 8 offset 0 arguments <pointer_type 9117c>
gcc源代码分析，finish_decl ()函数和push_parm_decl ()函数分析
原文地址：http://blog.csdn.net/oldlinux/article/details/42716355
