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#include "machine.h"
#include "preproc_private.h"
machine_t machine_x86_64;
// machine_t machine_x86;
// machine_t machine_arm64;
#define PASTE2(a, b) a ## b
#define PASTE(a, b) PASTE2(a, b)
#define STRINGIFY2(a) #a
#define STRINGIFY(a) STRINGIFY2(a)
#define MACHINE_STR STRINGIFY(CUR_MACHINE)
#define INIT_PATHS \
PASTE(machine_, CUR_MACHINE).npaths = 1 + npaths;
#define INCR_NPATHS(_path) \
++PASTE(machine_, CUR_MACHINE).npaths;
#define DO_PATHS \
if (!(PASTE(machine_, CUR_MACHINE).include_path = \
malloc(PASTE(machine_, CUR_MACHINE).npaths * sizeof *PASTE(machine_, CUR_MACHINE).include_path))) { \
printf("Failed to add include path to " MACHINE_STR " platform\n"); \
goto PASTE(failed_, PASTE(CUR_MACHINE, _nopath)); \
} \
failure_id = 0; \
ADD_PATH("include-fixed") \
for (; failure_id < npaths + 1; ++failure_id) { \
if (!(PASTE(machine_, CUR_MACHINE).include_path[failure_id] = strdup(extra_include_path[failure_id - 1]))) { \
printf("Failed to add include path to " MACHINE_STR " platform\n"); \
goto PASTE(failed_, PASTE(CUR_MACHINE, _paths)); \
} \
}
#define ADD_PATH(path) \
if (!(PASTE(machine_, CUR_MACHINE).include_path[failure_id] = strdup(path))) { \
printf("Failed to add include path to " MACHINE_STR " platform\n"); \
goto PASTE(failed_, PASTE(CUR_MACHINE, _paths)); \
} \
++failure_id;
#define EXTRA_MACROS \
PASTE(machine_, CUR_MACHINE).npredefs = PASTE(CUR_MACHINE, _NPREDEFS); \
if (!(PASTE(machine_, CUR_MACHINE).predef_macros_name = \
malloc((PASTE(CUR_MACHINE, _NPREDEFS)) * sizeof *PASTE(machine_, CUR_MACHINE).predef_macros_name))) { \
printf("Failed to add predefined macro to " MACHINE_STR " platform\n"); \
goto PASTE(failed_, PASTE(CUR_MACHINE, _paths)); \
} \
if (!(PASTE(machine_, CUR_MACHINE).predef_macros = \
malloc((PASTE(CUR_MACHINE, _NPREDEFS)) * sizeof *PASTE(machine_, CUR_MACHINE).predef_macros))) { \
printf("Failed to add predefined macro to " MACHINE_STR " platform\n"); \
free(machine_x86_64.predef_macros_name); \
goto PASTE(failed_, PASTE(CUR_MACHINE, _paths)); \
} \
failure_id = 0;
#define ADD_NAME(mname) \
if (!(PASTE(machine_, CUR_MACHINE).predef_macros_name[failure_id] = strdup(#mname))) { \
printf("Failed to add predefined macro to " MACHINE_STR " platform\n"); \
goto PASTE(failed_, PASTE(CUR_MACHINE, _macros)); \
}
#define ADD_MACRO(ntoks) \
if (!(PASTE(machine_, CUR_MACHINE).predef_macros[failure_id] = \
malloc(sizeof *PASTE(machine_, CUR_MACHINE).predef_macros[failure_id]))) { \
printf("Failed to add predefined macro to " MACHINE_STR " platform\n"); \
free(machine_x86_64.predef_macros_name[failure_id]); \
goto PASTE(failed_, PASTE(CUR_MACHINE, _macros)); \
} \
*PASTE(machine_, CUR_MACHINE).predef_macros[failure_id] = (macro_t){ \
.is_funlike = 0, \
.has_varargs = 0, \
.nargs = 0, \
.toks = vector_new_cap(mtoken, (ntoks)), \
}; \
++failure_id; \
if (!PASTE(machine_, CUR_MACHINE).predef_macros[failure_id - 1]->toks) { \
printf("Failed to add predefined macro to " MACHINE_STR " platform\n"); \
goto PASTE(failed_, PASTE(CUR_MACHINE, _macros)); \
}
#define ADD_SYM(s) \
mtok = mtoken_new_token((preproc_token_t){.tokt = PPTOK_SYM, .tokv.sym = SYM_ ## s}); \
if (!mtok) { \
printf("Failed to add predefined macro to " MACHINE_STR " platform\n"); \
goto PASTE(failed_, PASTE(CUR_MACHINE, _macros)); \
} \
vector_push(mtoken, PASTE(machine_, CUR_MACHINE).predef_macros[failure_id - 1]->toks, mtok);
#define ADD_STR(typ, n) \
s = string_new_cstr(#n); \
if (!s) { \
printf("Failed to add predefined macro to " MACHINE_STR " platform\n"); \
goto PASTE(failed_, PASTE(CUR_MACHINE, _macros)); \
} \
mtok = mtoken_new_token((preproc_token_t){.tokt = PPTOK_ ## typ, .tokv.str = s}); \
if (!mtok) { \
printf("Failed to add predefined macro to " MACHINE_STR " platform\n"); \
string_del(s); \
goto PASTE(failed_, PASTE(CUR_MACHINE, _macros)); \
} \
vector_push(mtoken, PASTE(machine_, CUR_MACHINE).predef_macros[failure_id - 1]->toks, mtok);
int init_machines(size_t npaths, const char *const *extra_include_path) {
size_t failure_id;
string_t *s;
mtoken_t *mtok;
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wanalyzer-malloc-leak"
#define CUR_MACHINE x86_64
machine_x86_64.size_long = 8;
machine_x86_64.align_valist = 8;
machine_x86_64.size_valist = 24;
INIT_PATHS
#define DO_PATH INCR_NPATHS
#include "machine.gen"
#undef DO_PATH
DO_PATHS
#define DO_PATH ADD_PATH
#include "machine.gen"
#undef DO_PATH
#define x86_64_NPREDEFS 9
EXTRA_MACROS
ADD_NAME(__x86_64__)
ADD_MACRO(1)
ADD_STR(NUM, 1)
ADD_NAME(__WCHAR_MAX__)
ADD_MACRO(1)
ADD_STR(NUM, 2147483647)
ADD_NAME(__WCHAR_MIN__)
ADD_MACRO(5)
ADD_SYM(LPAREN)
ADD_SYM(DASH)
ADD_STR(IDENT, __WCHAR_MAX__)
ADD_SYM(DASH)
ADD_STR(NUM, 1)
ADD_NAME(__CHAR_BIT__)
ADD_MACRO(1)
ADD_STR(NUM, 8)
ADD_NAME(__SCHAR_MAX__)
ADD_MACRO(1)
ADD_STR(NUM, 127)
ADD_NAME(__SHRT_MAX__)
ADD_MACRO(1)
ADD_STR(NUM, 32767)
ADD_NAME(__INT_MAX__)
ADD_MACRO(1)
ADD_STR(NUM, 2147483647)
ADD_NAME(__LONG_MAX__)
ADD_MACRO(1)
ADD_STR(NUM, 9223372036854775807L)
ADD_NAME(__LONG_LONG_MAX__)
ADD_MACRO(1)
ADD_STR(NUM, 9223372036854775807LL)
#undef CUR_MACHINE
#pragma GCC diagnostic pop
return 1;
failed_x86_64_macros:
while (failure_id--) {
macro_del(machine_x86_64.predef_macros[failure_id]);
free(machine_x86_64.predef_macros[failure_id]);
free(machine_x86_64.predef_macros_name[failure_id]);
}
free(machine_x86_64.predef_macros);
free(machine_x86_64.predef_macros_name);
failure_id = machine_x86_64.npaths;
failed_x86_64_paths:
while (failure_id--) {
free(machine_x86_64.include_path[failure_id]);
}
free(machine_x86_64.include_path);
failed_x86_64_nopath:
return 0;
}
static void machine_del(machine_t *m) {
for (size_t predef_id = m->npredefs; predef_id--;) {
macro_del(m->predef_macros[predef_id]);
free(m->predef_macros[predef_id]);
free(m->predef_macros_name[predef_id]);
}
free(m->predef_macros);
free(m->predef_macros_name);
for (size_t path_no = m->npaths; path_no--;) {
free(m->include_path[path_no]);
}
free(machine_x86_64.include_path);
}
void del_machines(void) {
machine_del(&machine_x86_64);
}
int validate_type(machine_t *target, type_t *typ) {
if (typ->is_validated) return 1;
typ->is_validated = 1;
if (typ->is_restrict) {
if (typ->typ != TYPE_PTR) {
printf("Error: only pointers to object types may be restrict-qualified\n");
return 0;
}
if (typ->val.typ->typ == TYPE_FUNCTION) {
printf("Error: only pointers to object types may be restrict-qualified\n");
return 0;
}
}
if (typ->is_atomic) {
if ((typ->typ == TYPE_ARRAY) || (typ->typ == TYPE_FUNCTION)) {
printf("Error: array types and function types may not be atomic-qualified\n");
return 0;
}
}
switch (typ->typ) {
case TYPE_BUILTIN:
switch (typ->val.builtin) {
case BTT_VOID: typ->szinfo.align = typ->szinfo.size = 0; break;
case BTT_BOOL: typ->szinfo.align = typ->szinfo.size = 1; break;
case BTT_CHAR: typ->szinfo.align = typ->szinfo.size = 1; break;
case BTT_SCHAR: typ->szinfo.align = typ->szinfo.size = 1; break;
case BTT_UCHAR: typ->szinfo.align = typ->szinfo.size = 1; break;
case BTT_SHORT: typ->szinfo.align = typ->szinfo.size = 2; break;
case BTT_SSHORT: typ->szinfo.align = typ->szinfo.size = 2; break;
case BTT_USHORT: typ->szinfo.align = typ->szinfo.size = 2; break;
case BTT_INT: typ->szinfo.align = typ->szinfo.size = 4; break;
case BTT_SINT: typ->szinfo.align = typ->szinfo.size = 4; break;
case BTT_UINT: typ->szinfo.align = typ->szinfo.size = 4; break;
case BTT_LONG: typ->szinfo.align = typ->szinfo.size = target->size_long; break;
case BTT_SLONG: typ->szinfo.align = typ->szinfo.size = target->size_long; break;
case BTT_ULONG: typ->szinfo.align = typ->szinfo.size = target->size_long; break;
case BTT_LONGLONG: typ->szinfo.align = typ->szinfo.size = 8; break;
case BTT_SLONGLONG: typ->szinfo.align = typ->szinfo.size = 8; break;
case BTT_ULONGLONG: typ->szinfo.align = typ->szinfo.size = 8; break;
case BTT_INT128: typ->szinfo.align = typ->szinfo.size = 16; break;
case BTT_SINT128: typ->szinfo.align = typ->szinfo.size = 16; break;
case BTT_UINT128: typ->szinfo.align = typ->szinfo.size = 16; break;
case BTT_S8: typ->szinfo.align = typ->szinfo.size = 1; break;
case BTT_U8: typ->szinfo.align = typ->szinfo.size = 1; break;
case BTT_S16: typ->szinfo.align = typ->szinfo.size = 2; break;
case BTT_U16: typ->szinfo.align = typ->szinfo.size = 2; break;
case BTT_S32: typ->szinfo.align = typ->szinfo.size = 4; break;
case BTT_U32: typ->szinfo.align = typ->szinfo.size = 4; break;
case BTT_S64: typ->szinfo.align = typ->szinfo.size = 8; break;
case BTT_U64: typ->szinfo.align = typ->szinfo.size = 8; break;
case BTT_FLOAT: typ->szinfo.align = typ->szinfo.size = 4; break;
case BTT_CFLOAT: typ->szinfo.align = typ->szinfo.size = 8; break;
case BTT_IFLOAT: typ->szinfo.align = typ->szinfo.size = 4; break;
case BTT_DOUBLE: typ->szinfo.align = typ->szinfo.size = 8; break;
case BTT_CDOUBLE: typ->szinfo.align = typ->szinfo.size = 16; break;
case BTT_IDOUBLE: typ->szinfo.align = typ->szinfo.size = 8; break;
case BTT_LONGDOUBLE: typ->szinfo.align = typ->szinfo.size = 16; break;
case BTT_CLONGDOUBLE: typ->szinfo.align = typ->szinfo.size = 32; break;
case BTT_ILONGDOUBLE: typ->szinfo.align = typ->szinfo.size = 16; break;
case BTT_VA_LIST: typ->szinfo.align = target->align_valist; typ->szinfo.size = target->size_valist; break;
default:
printf("Unknown builtin %u, cannot fill size info\n", typ->val.builtin);
return 0;
}
return 1;
case TYPE_ARRAY:
if (typ->val.array.typ->is_incomplete || (typ->val.array.typ->typ == TYPE_FUNCTION)) {
printf("Error: array types must point to complete object types\n");
return 0;
}
if ((typ->val.array.typ->typ == TYPE_STRUCT_UNION) && typ->val.array.typ->val.st->has_incomplete) {
printf("Error: array types may not (inductively) point to structures which last element is incomplete\n");
return 0;
}
if ((typ->is_atomic) || (typ->is_const) || (typ->is_restrict) || (typ->is_volatile)) {
// qualifier-type-list in array declaration is only allowed in function argument declaration under certain circumstances
printf("Error: array types may not be qualified\n");
return 0;
}
if (!validate_type(target, typ->val.array.typ)) return 0;
if (typ->val.array.array_sz == (size_t)-1) {
typ->szinfo.size = 0;
typ->szinfo.align = (typ->val.array.typ->szinfo.align < 16) ? 16 : typ->val.array.typ->szinfo.align;
} else {
typ->szinfo.size = typ->val.array.array_sz * typ->val.array.typ->szinfo.size;
typ->szinfo.align =
((typ->szinfo.size >= 16) && (typ->val.array.typ->szinfo.align < 16)) ?
16 :
typ->val.array.typ->szinfo.align;
}
return 1;
case TYPE_PTR:
typ->szinfo.size = target->size_long;
typ->szinfo.align = target->size_long;
return validate_type(target, typ->val.typ);
case TYPE_FUNCTION:
if ((typ->val.fun.ret->typ == TYPE_FUNCTION) || (typ->val.fun.ret->typ == TYPE_ARRAY)) {
printf("Error: function types may not return function or array types\n");
return 0;
}
if (typ->val.fun.nargs != (size_t)-1) {
for (size_t i = 0; i < typ->val.fun.nargs; ++i) {
// Adjust the argument if necessary
if (typ->val.fun.args[i]->typ == TYPE_ARRAY) {
// Adjustment to pointer
typ->val.fun.args[i]->typ = TYPE_PTR;
typ->val.fun.args[i]->val.typ = typ->val.fun.args[i]->val.array.typ;
} else if (typ->val.fun.args[i]->typ == TYPE_FUNCTION) {
// Adjustment to pointer
type_t *t2 = type_new_ptr(typ->val.fun.args[i]);
if (!t2) {
printf("Error: failed to adjust type of argument from function to pointer\n");
return 0;
}
typ->val.fun.args[i] = t2;
}
if (!validate_type(target, typ->val.fun.args[i])) return 0;
}
}
typ->szinfo.size = 0;
typ->szinfo.align = 0;
return validate_type(target, typ->val.fun.ret);
case TYPE_STRUCT_UNION: {
if (!typ->val.st->is_defined) return typ->is_incomplete;
size_t max_align = 1, cur_sz = 0, cur_bit = 0;
for (size_t i = 0; i < typ->val.st->nmembers; ++i) {
// Adjust the argument if necessary
st_member_t *mem = &typ->val.st->members[i];
if (mem->typ->typ == TYPE_FUNCTION) {
printf("Error: structures may not contain function members\n");
return 0;
}
if (mem->typ->is_incomplete) {
if ((i != typ->val.st->nmembers - 1) || !typ->val.st->is_struct || (mem->typ->typ != TYPE_ARRAY)) {
// The last element of a structure may be a VLA
printf("Error: structures may not contain incomplete members\n");
return 0;
}
typ->val.st->has_incomplete = 1;
}
if (!validate_type(target, mem->typ)) return 0;
if (!typ->val.st->is_struct && (mem->typ->typ == TYPE_STRUCT_UNION)) {
typ->val.st->has_incomplete |= mem->typ->val.st->has_incomplete;
}
if (mem->is_bitfield) {
if (!typ->val.st->is_struct) {
printf("Error: TODO: bitfield in union\n");
return 0;
}
if (mem->typ->is_atomic) {
printf("Error: atomic bitfields are not supported\n");
return 0;
}
if (mem->typ->typ != TYPE_BUILTIN) {
printf("Error: bitfields can only have a specific subset of types\n");
return 0;
}
if ((mem->typ->val.builtin != BTT_BOOL) && (mem->typ->val.builtin != BTT_INT)
&& (mem->typ->val.builtin != BTT_SINT) && (mem->typ->val.builtin != BTT_UINT)) {
printf("Error: bitfields can only have a specific subset of types\n");
return 0;
}
if (!mem->name && (mem->typ->szinfo.align > max_align)) {
printf("Error: TODO: unnamed bitfield member with greater alignment (width=%zu)\n", mem->bitfield_width);
return 0;
}
if (mem->bitfield_width) {
if (mem->name && (max_align < mem->typ->szinfo.align)) max_align = mem->typ->szinfo.align;
size_t cur_block = cur_sz / mem->typ->szinfo.align;
size_t end_block = (cur_sz + (cur_bit + mem->bitfield_width - 1) / 8) / mem->typ->szinfo.align;
if (cur_block == end_block) {
cur_bit += mem->bitfield_width;
cur_sz += cur_bit / 8;
cur_bit %= 8;
} else {
cur_sz = ((cur_sz + mem->typ->szinfo.align - 1) & ~(mem->typ->szinfo.align - 1)) + (mem->bitfield_width / 8);
cur_bit = mem->bitfield_width % 8;
}
} else {
if (max_align < mem->typ->szinfo.align) max_align = mem->typ->szinfo.align;
cur_sz = ((cur_sz + mem->typ->szinfo.align - 1) & ~(mem->typ->szinfo.align - 1)) + mem->typ->szinfo.size;
printf("Error: TODO: unnamed zero-width bitfield member\n");
return 0;
}
} else {
if (max_align < mem->typ->szinfo.align) max_align = mem->typ->szinfo.align;
if (typ->val.st->is_struct) {
if (cur_bit) {
cur_bit = 0;
++cur_sz;
}
cur_sz = ((cur_sz + mem->typ->szinfo.align - 1) & ~(mem->typ->szinfo.align - 1)) + mem->typ->szinfo.size;
} else {
if (cur_sz < mem->typ->szinfo.size) cur_sz = mem->typ->szinfo.size;
}
}
}
if (cur_bit) {
cur_bit = 0;
++cur_sz;
}
typ->szinfo.align = max_align;
typ->szinfo.size = (cur_sz + max_align - 1) & ~(max_align - 1);
return 1; }
case TYPE_ENUM:
if (typ->val.typ->typ != TYPE_BUILTIN) return 0;
typ->szinfo = typ->val.typ->szinfo;
return 1;
}
return 0;
}
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