[hackers] [scc] Remove sizeof nodes || Roberto E. Vargas Caballero
commit 63284fa474d0474e85fd63a0b2fb00878f7efeee
Author: Roberto E. Vargas Caballero <k0ga_AT_shike2.com>
AuthorDate: Mon Jul 20 19:23:42 2015 +0200
Commit: Roberto E. Vargas Caballero <k0ga_AT_shike2.com>
CommitDate: Mon Jul 20 19:23:42 2015 +0200
Remove sizeof nodes
We need calculate sizeof expressions in cc1, because in other case
we will not be able of calculate types like:
int a[sizeof(int)];
diff --git a/cc1/cc1.h b/cc1/cc1.h
index f60053f..328343f 100644
--- a/cc1/cc1.h
+++ b/cc1/cc1.h
_AT_@ -13,11 +13,18 @@ typedef struct caselist Caselist;
typedef struct node Node;
typedef struct input Input;
+/*
+ * TODO: Some of the data stored in type is shared with
+ * cc2, so it should be stored in a table shared
+ * between both programs, and dependant of the target.
+ */
struct type {
unsigned char op; /* type builder operator */
unsigned char ns;
char letter; /* letter of the type */
bool defined; /* type defined */
+ size_t size; /* sizeof the type */
+ size_t align; /* align of the type */
Type *type; /* base type */
Type *next; /* next element in the hash */
Type **pars; /* type parameters */
_AT_@ -211,7 +218,6 @@ enum tokens {
enum {
OPTR,
OADD,
- OSIZE,
OMUL,
OSUB,
OINC,
_AT_@ -337,7 +343,7 @@ extern int lexmode;
extern Type *voidtype, *pvoidtype, *booltype,
*uchartype, *chartype,
- *uinttype, *inttype,
+ *uinttype, *inttype, *sizetp,
*ushortype, *shortype,
*longtype, *ulongtype,
*ullongtype, *llongtype,
diff --git a/cc1/code.c b/cc1/code.c
index c4e946b..e22908e 100644
--- a/cc1/code.c
+++ b/cc1/code.c
_AT_@ -10,7 +10,7 @@
static void emitbin(unsigned, void *),
emitcast(unsigned, void *), emitswitch(unsigned, void *),
emitsym(unsigned, void *), emitfield(unsigned, void *),
- emitsizeof(unsigned, void *), emitexp(unsigned, void *),
+ emitexp(unsigned, void *),
emitsymid(unsigned, void *), emittext(unsigned, void *),
emitprint(unsigned, void *), emitfun(unsigned, void *),
emitret(unsigned, void *), emitdcl(unsigned, void *);
_AT_@ -21,7 +21,6 @@ char *optxt[] = {
[OMUL] = "*",
[OINC] = ";+",
[ODEC] = ";-",
- [OSIZE] = "#",
[OPTR] = "_AT_",
[OMOD] = "%",
[ODIV] = "/",
_AT_@ -72,7 +71,6 @@ void (*opcode[])(unsigned, void *) = {
[OMUL] = emitbin,
[OINC] = emitbin,
[ODEC] = emitbin,
- [OSIZE] = emitsizeof,
[OPTR] = emitbin,
[OMOD] = emitbin,
[ODIV] = emitbin,
_AT_@ -235,13 +233,6 @@ emitbin(unsigned op, void *arg)
}
static void
-emitsizeof(unsigned op, void *arg)
-{
- Node *np = arg;
- printf("\t#%c", np->left->type->letter);
-}
-
-static void
emitexp(unsigned op, void *arg)
{
Node *np = arg;
_AT_@ -351,7 +342,10 @@ Node *
sizeofnode(Type *tp)
{
Node *np;
+ Symbol *sym;
- np = node(0, tp, NULL, NULL);
- return node(OSIZE, inttype, np, NULL);
+ sym = newsym(NS_IDEN);
+ sym->type = sizetp;
+ sym->u.i = tp->size;
+ return constnode(sym);
}
diff --git a/cc1/types.c b/cc1/types.c
index 5aef90d..5e2011c 100644
--- a/cc1/types.c
+++ b/cc1/types.c
_AT_@ -24,96 +24,128 @@ static Type types[] = {
},
{ /* 1 = pvoidtype */
.op = PTR,
- .letter = L_POINTER
+ .letter = L_POINTER,
+ .size = 2,
+ .align = 2
},
{ /* 2 = booltype */
.op = INT,
.letter = L_BOOL,
.defined = 1,
+ .size = 1,
+ .align = 1,
.n.rank = RANK_BOOL
},
{ /* 3 = schartype */
.op = INT,
.letter = L_SCHAR,
.defined = 1,
+ .size = 1,
+ .align = 1,
.n.rank = RANK_SCHAR
},
{ /* 4 = uchartype */
.op = INT,
.letter = L_UCHAR,
.defined = 1,
+ .size = 1,
+ .align = 1,
.n.rank = RANK_UCHAR
},
{ /* 5 = chartype */
.op = INT,
.letter = L_CHAR,
.defined = 1,
+ .size = 1,
+ .align = 1,
.n.rank = RANK_CHAR
},
{ /* 6 = ushortype */
.op = INT,
.letter = L_USHORT,
.defined = 1,
+ .size = 2,
+ .align = 1,
.n.rank = RANK_USHORT
},
{ /* 7 = shortype */
.op = INT,
.letter = L_SHORT,
.defined = 1,
+ .size = 2,
+ .align = 1,
.n.rank = RANK_SHORT
},
{ /* 8 = uinttype */
.op = INT,
.letter = L_UINT,
.defined = 1,
+ .size = 2,
+ .align = 1,
.n.rank = RANK_UINT
},
{ /* 9 = inttype */
.op = INT,
.letter = L_INT,
.defined = 1,
+ .size = 2,
+ .align = 1,
.n.rank = RANK_INT
},
{ /* 10 = longtype */
.op = INT,
.letter = L_LONG,
.defined = 1,
+ .size = 4,
+ .align = 1,
.n.rank = RANK_LONG
},
{ /* 11 = ulongtype */
.op = INT,
.letter = L_ULONG,
.defined = 1,
+ .size = 4,
+ .align = 1,
.n.rank = RANK_ULONG
},
{ /* 12 = ullongtype */
.op = INT,
.letter = L_ULLONG,
.defined = 1,
+ .size = 8,
+ .align = 1,
.n.rank = RANK_ULLONG
},
{ /* 13 = llongtype */
.op = INT,
.letter = L_LLONG,
.defined = 1,
+ .size = 8,
+ .align = 1,
.n.rank = RANK_LLONG
},
{ /* 14 = floattype */
.op = FLOAT,
.letter = L_FLOAT,
.defined = 1,
+ .size = 4,
+ .align = 1,
.n.rank = RANK_FLOAT
},
{ /* 15 = doubletype */
.op = FLOAT,
.letter = L_DOUBLE,
.defined = 1,
+ .size = 8,
+ .align = 1,
.n.rank = RANK_DOUBLE
},
{ /* 16 = ldoubletype */
.op = FLOAT,
.letter = L_LDOUBLE,
.defined = 1,
+ .size = 16,
+ .align = 1,
.n.rank = RANK_LDOUBLE
}
};
_AT_@ -128,6 +160,8 @@ Type *voidtype = &types[0], *pvoidtype = &types[1],
*floattype = &types[14], *doubletype = &types[15],
*ldoubletype = &types[16];
+Type *sizetp = &types[8]; /* TODO: This depend of the target */
+
static Symbol dummy0 = {.u.i = 0, .type = &types[9]},
dummy1 = {.u.i = 1, .type = &types[9]};
Symbol *zero = &dummy0, *one = &dummy1;
Received on Mon Jul 20 2015 - 19:28:02 CEST
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: Mon Jul 20 2015 - 19:36:15 CEST