struct lispobj *env_var_lookup(struct lispobj *var, struct lispobj *env)
{
struct lispobj *frame, *cell;
char error[64];
while(env != NULL) {
frame = ENV_FIRST(env);
while(frame != NULL) {
cell = CAR(frame);
if(CAR(cell) == var) {
/* Return whole cell, e.g. (foo . 1). */
return cell;
}
frame = CDR(frame);
}
env = ENV_REST(env);
}
snprintf(error, 64, "Unbound variable: %s.\n", SYMBOL_VALUE(var));
return NEW_ERROR(error);
}
static struct mdebug_extra_func_info *
find_proc_desc (CORE_ADDR pc)
{
struct block *b = block_for_pc (pc);
struct mdebug_extra_func_info *proc_desc = NULL;
struct symbol *sym = NULL;
if (b)
{
CORE_ADDR startaddr;
find_pc_partial_function (pc, NULL, &startaddr, NULL);
if (startaddr > BLOCK_START (b))
/* This is the "pathological" case referred to in a comment in
print_frame_info. It might be better to move this check into
symbol reading. */
sym = NULL;
else
sym = lookup_symbol (MDEBUG_EFI_SYMBOL_NAME, b, LABEL_DOMAIN, 0, NULL);
}
if (sym)
{
proc_desc = (struct mdebug_extra_func_info *) SYMBOL_VALUE (sym);
/* If we never found a PDR for this function in symbol reading,
then examine prologues to find the information. */
if (proc_desc->pdr.framereg == -1)
proc_desc = NULL;
}
return proc_desc;
}
void env_debug(void)
{
struct lispobj *tmp_env = environment;
while(tmp_env != NULL) {
struct lispobj *frame = ENV_FIRST(tmp_env);
printf(" (");
while(frame != NULL) {
struct lispobj *cell = CAR(frame);
printf(" [%s %d; 0x%x %d] ",
SYMBOL_VALUE(CAR(cell)),
OBJ_REFS(CAR(cell)),
CDR(cell),
CDR(cell) != NULL ? OBJ_REFS(CDR(cell)) : -1);
frame = CDR(frame);
}
printf(") ");
tmp_env = CDR(tmp_env);
}
printf("\n");
}
struct lispobj *env_var_define(struct lispobj *var, struct lispobj *val, struct lispobj *env)
{
struct lispobj *frame, *pair, *cell, *lookup;
/* Checking on variable existence. */
lookup = env_var_lookup(var, env);
/* If variable exists return error. */
if(OBJ_TYPE(lookup) != ERROR) {
char error[64];
snprintf(error, 64, "Variable already exists: %s.\n", SYMBOL_VALUE(var));
return NEW_ERROR(error);
}
/* Remove not necessary object. */
heap_release(lookup);
/* Get top frame from environment. */
frame = ENV_FIRST(env);
/* Creating cell for new variable. */
cell = NEW_CONS(var, val);
/* Appending new cell into the frame. */
pair = NEW_CONS(cell, frame);
frame = heap_grab(pair);
/* Appending the frame into the environment. */
CAR(env) = frame;
return val;
}
struct lispobj *symbol_table_lookup(char *symbol)
{
struct lispobj *tmp = symbol_table;
while(tmp != NULL) {
if(!strcmp(SYMBOL_VALUE(CAR(tmp)), symbol)) {
return CAR(tmp);
}
tmp = CDR(tmp);
}
return NULL;
}
void symbol_table_debug(void)
{
struct lispobj *tmp_symt;
tmp_symt = symbol_table;
printf("__DEBUG_SYMT__: symbol table:\n");
while(tmp_symt != NULL) {
printf("[%s %d]\n",
SYMBOL_VALUE(CAR(tmp_symt)),
OBJ_REFS(CAR(tmp_symt)));
tmp_symt = CDR(tmp_symt);
}
printf("\n");
return;
}
//#ifdef __DEBUG_HEAP__
void heap_debug_object(struct lispobj *obj)
{
if(obj == NULL) {
printf(" null pointer");
} else {
printf(" [%p ", obj);
if(OBJ_TYPE(obj) == SYMBOL) {
printf("(symbol %s) ", SYMBOL_VALUE(obj));
} else if(OBJ_TYPE(obj) == NUMBER) {
printf("(number %d) ", NUMBER_VALUE(obj));
} else if(OBJ_TYPE(obj) == STRING) {
printf("(string %s) ", STRING_VALUE(obj));
} else {
printf("(cons) ");
}
printf("%d] ", OBJ_REFS(obj));
}
}
static struct mdebug_extra_func_info *
find_proc_desc (CORE_ADDR pc)
{
struct block *b = block_for_pc (pc);
struct mdebug_extra_func_info *proc_desc = NULL;
struct symbol *sym = NULL;
char *sh_name = NULL;
if (b)
{
CORE_ADDR startaddr;
find_pc_partial_function (pc, &sh_name, &startaddr, NULL);
if (startaddr > BLOCK_START (b))
/* This is the "pathological" case referred to in a comment in
print_frame_info. It might be better to move this check into
symbol reading. */
sym = NULL;
else
sym = lookup_symbol (MDEBUG_EFI_SYMBOL_NAME, b, LABEL_DOMAIN, 0);
}
if (sym)
{
proc_desc = (struct mdebug_extra_func_info *) SYMBOL_VALUE (sym);
/* Correct incorrect setjmp procedure descriptor from the library
to make backtrace through setjmp work. */
if (proc_desc->pdr.pcreg == 0
&& strcmp (sh_name, "setjmp") == 0)
{
proc_desc->pdr.pcreg = ALPHA_RA_REGNUM;
proc_desc->pdr.regmask = 0x80000000;
proc_desc->pdr.regoffset = -4;
}
/* If we never found a PDR for this function in symbol reading,
then examine prologues to find the information. */
if (proc_desc->pdr.framereg == -1)
proc_desc = NULL;
}
return proc_desc;
}
void print(struct lispobj *obj)
{
#ifdef __DEBUG_PRINT__
printf("[");
#endif /* __DEBUG_PRINT__ */
if(obj == NULL) {
printf("NIL");
} else if(OBJ_TYPE(obj) == ERROR) {
printf("Error: %s", ERROR_VALUE(obj));
} else if(OBJ_TYPE(obj) == SYMBOL) {
printf("%s", SYMBOL_VALUE(obj));
} else if(OBJ_TYPE(obj) == NUMBER) {
printf("%d", NUMBER_VALUE(obj));
} else if(OBJ_TYPE(obj) == STRING) {
printf("\"%s\"", STRING_VALUE(obj));
} else {
if(CAR(obj) == NEW_SYMBOL("PROC")) {
printf("<procedure ");
if(CADR(obj) != NEW_SYMBOL("NIL")) {
print_list(CADR(obj));
} else {
printf("()");
}
printf(" %p>", CADDDR(obj));
} else if(CAR(obj) == NEW_SYMBOL("SUBR")) {
printf("<primitive-procedure %p>", CADR(obj));
} else {
print_list(obj);
}
}
#ifdef __DEBUG_PRINT__
if(obj != NULL) {
printf(" => %d]", OBJ_REFS(obj));
} else {
printf(" => nil]");
}
#endif /* __DEBUG_PRINT__ */
return;
}
static void
convert_one_symbol (struct compile_c_instance *context,
struct symbol *sym,
int is_global,
int is_local)
{
gcc_type sym_type;
const char *filename = symbol_symtab (sym)->filename;
unsigned short line = SYMBOL_LINE (sym);
error_symbol_once (context, sym);
if (SYMBOL_CLASS (sym) == LOC_LABEL)
sym_type = 0;
else
sym_type = convert_type (context, SYMBOL_TYPE (sym));
if (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN)
{
/* Binding a tag, so we don't need to build a decl. */
C_CTX (context)->c_ops->tagbind (C_CTX (context),
SYMBOL_NATURAL_NAME (sym),
sym_type, filename, line);
}
else
{
gcc_decl decl;
enum gcc_c_symbol_kind kind;
CORE_ADDR addr = 0;
char *symbol_name = NULL;
switch (SYMBOL_CLASS (sym))
{
case LOC_TYPEDEF:
kind = GCC_C_SYMBOL_TYPEDEF;
break;
case LOC_LABEL:
kind = GCC_C_SYMBOL_LABEL;
addr = SYMBOL_VALUE_ADDRESS (sym);
break;
case LOC_BLOCK:
kind = GCC_C_SYMBOL_FUNCTION;
addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym));
if (is_global && TYPE_GNU_IFUNC (SYMBOL_TYPE (sym)))
addr = gnu_ifunc_resolve_addr (target_gdbarch (), addr);
break;
case LOC_CONST:
if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_ENUM)
{
/* Already handled by convert_enum. */
return;
}
C_CTX (context)->c_ops->build_constant (C_CTX (context), sym_type,
SYMBOL_NATURAL_NAME (sym),
SYMBOL_VALUE (sym),
filename, line);
return;
case LOC_CONST_BYTES:
error (_("Unsupported LOC_CONST_BYTES for symbol \"%s\"."),
SYMBOL_PRINT_NAME (sym));
case LOC_UNDEF:
internal_error (__FILE__, __LINE__, _("LOC_UNDEF found for \"%s\"."),
SYMBOL_PRINT_NAME (sym));
case LOC_COMMON_BLOCK:
error (_("Fortran common block is unsupported for compilation "
"evaluaton of symbol \"%s\"."),
SYMBOL_PRINT_NAME (sym));
case LOC_OPTIMIZED_OUT:
error (_("Symbol \"%s\" cannot be used for compilation evaluation "
"as it is optimized out."),
SYMBOL_PRINT_NAME (sym));
case LOC_COMPUTED:
if (is_local)
goto substitution;
/* Probably TLS here. */
warning (_("Symbol \"%s\" is thread-local and currently can only "
"be referenced from the current thread in "
"compiled code."),
SYMBOL_PRINT_NAME (sym));
/* FALLTHROUGH */
case LOC_UNRESOLVED:
/* 'symbol_name' cannot be used here as that one is used only for
local variables from compile_dwarf_expr_to_c.
Global variables can be accessed by GCC only by their address, not
by their name. */
{
struct value *val;
struct frame_info *frame = NULL;
if (symbol_read_needs_frame (sym))
{
frame = get_selected_frame (NULL);
if (frame == NULL)
error (_("Symbol \"%s\" cannot be used because "
"there is no selected frame"),
SYMBOL_PRINT_NAME (sym));
}
val = read_var_value (sym, frame);
if (VALUE_LVAL (val) != lval_memory)
error (_("Symbol \"%s\" cannot be used for compilation "
"evaluation as its address has not been found."),
SYMBOL_PRINT_NAME (sym));
kind = GCC_C_SYMBOL_VARIABLE;
addr = value_address (val);
}
break;
case LOC_REGISTER:
case LOC_ARG:
case LOC_REF_ARG:
case LOC_REGPARM_ADDR:
case LOC_LOCAL:
substitution:
kind = GCC_C_SYMBOL_VARIABLE;
symbol_name = symbol_substitution_name (sym);
break;
case LOC_STATIC:
kind = GCC_C_SYMBOL_VARIABLE;
addr = SYMBOL_VALUE_ADDRESS (sym);
break;
case LOC_FINAL_VALUE:
default:
gdb_assert_not_reached ("Unreachable case in convert_one_symbol.");
}
/* Don't emit local variable decls for a raw expression. */
if (context->base.scope != COMPILE_I_RAW_SCOPE
|| symbol_name == NULL)
{
decl = C_CTX (context)->c_ops->build_decl (C_CTX (context),
SYMBOL_NATURAL_NAME (sym),
kind,
sym_type,
symbol_name, addr,
filename, line);
C_CTX (context)->c_ops->bind (C_CTX (context), decl, is_global);
}
xfree (symbol_name);
}
}
void garbage_collect(long min_space) {
char *p;
object **gcp;
object *op;
long i, max, count;
int old_interrupt;
if (*will_gc_hook) (*will_gc_hook)();
old_interrupt = enable_interrupts(0);
/* switch heap space */
gc_count++;
/* printf("[GC]\n"); */
heap += heap_size;
if (heap >= max_heap)
heap = min_memory;
heap_pointer = heap;
heap_end = heap + heap_size;
/* migrate objects */
count = gc_root_stack_pointer - gc_root_stack_begin;
migrate_object(gc_root_stack_buffer);
if (FORWARDED_P(gc_root_stack_buffer)) gc_root_stack_buffer = FORWARDED_POINTER(gc_root_stack_buffer);
gc_root_stack_begin = (object **)BUFFER_DATA(gc_root_stack_buffer);
gc_root_stack_end = gc_root_stack_begin + GC_ROOT_STACK_MAX;
gc_root_stack_pointer = gc_root_stack_begin + count;
gcp = gc_root_stack_begin;
for (i=0; i<count; i++)
migrate_object(*gcp[i]);
for (op = sp; op < stack_top; op++)
migrate_object(*op);
/* eliminate forwarding pointers */
gcp = gc_root_stack_begin;
for (i=0; i<count; i++) {
object o = *gcp[i];
if (FORWARDED_P(o))
*gcp[i] = FORWARDED_POINTER(o);
}
for (op = sp; op < stack_top; op++) {
object o = *op;
if (FORWARDED_P(o))
*op = FORWARDED_POINTER(o);
}
p = heap;
while (p < heap_pointer) {
object *q, obj, o;
obj = (object)p;
switch (POINTER_TYPE(obj)) {
case PAIR_TYPE:
o = CAR(obj); if (FORWARDED_P(o)) CAR(obj) = FORWARDED_POINTER(o);
o = CDR(obj); if (FORWARDED_P(o)) CDR(obj) = FORWARDED_POINTER(o);
break;
case WEAK_TYPE:
if (FORWARDED_P(WEAK_VALUE(obj))) {
WEAK_BOUND(obj) = 1;
} else {
WEAK_BOUND(obj) = 0;
migrate_object(WEAK_VALUE(obj));
}
o = WEAK_VALUE(obj); if (FORWARDED_P(o)) WEAK_VALUE(obj) = FORWARDED_POINTER(o);
break;
case SYMBOL_TYPE:
o = SYMBOL_VALUE(obj); if (FORWARDED_P(o)) SYMBOL_VALUE(obj) = FORWARDED_POINTER(o);
break;
case VECTOR_TYPE:
max = VECTOR_LENGTH(obj);
q = VECTOR_ELEMENTS(obj);
for (i=0; i<max; i++) {
o = q[i]; if (FORWARDED_P(o)) q[i] = FORWARDED_POINTER(o);
}
o = VECTOR_TAG(obj); if (FORWARDED_P(o)) VECTOR_TAG(obj) = FORWARDED_POINTER(o);
break;
case PROCEDURE_TYPE:
o = PROC_MODULE(obj); if (FORWARDED_P(o)) PROC_MODULE(obj) = FORWARDED_POINTER(o);
break;
case FRAME_TYPE:
o = FRAME_PREVIOUS(obj); if (FORWARDED_P(o)) FRAME_PREVIOUS(obj) = FORWARDED_POINTER(o);
o = FRAME_ENV(obj); if (FORWARDED_P(o)) FRAME_ENV(obj) = FORWARDED_POINTER(o);
max = (POINTER_LENGTH(obj) - sizeof(struct frame_heap_structure))/sizeof(long);
q = FRAME_ELEMENTS(obj);
for (i=0; i<max; i++) {
o = q[i]; if (FORWARDED_P(o)) q[i] = FORWARDED_POINTER(o);
}
break;
case CLOSURE_TYPE:
o = CLOSURE_PROC(obj); if (FORWARDED_P(o)) CLOSURE_PROC(obj) = FORWARDED_POINTER(o);
o = CLOSURE_ENV(obj); if (FORWARDED_P(o)) CLOSURE_ENV(obj) = FORWARDED_POINTER(o);
break;
case CONTINUATION_TYPE:
o = CONTINUATION_FRAME(obj); if (FORWARDED_P(o)) CONTINUATION_FRAME(obj) = FORWARDED_POINTER(o);
max = CONTINUATION_STACKSIZE(obj);
q = CONTINUATION_STACK(obj);
for (i=0; i<max; i++) {
o = q[i]; if (FORWARDED_P(o)) q[i] = FORWARDED_POINTER(o);
}
break;
case SYMBOLTABLE_TYPE:
o = SYMBOLTABLE_MAPPINGS(obj); if (FORWARDED_P(o)) SYMBOLTABLE_MAPPINGS(obj) = FORWARDED_POINTER(o);
break;
case PORT_TYPE:
o = PORT_BUFFER(obj); if (FORWARDED_P(o)) PORT_BUFFER(obj) = FORWARDED_POINTER(o);
break;
default:
fatal_error("Unknown pointer type: heap.c#garbage_collect(): %p\n", obj);
return;
}
p += POINTER_LENGTH(obj);
}
/* finalization of ports */
close_stale_ports();
fix_runtime_pointers();
/* Finish up */
enable_interrupts(old_interrupt);
i = heap_size - (heap_pointer - heap);
if (i < min_space)
fatal_error("out of heap space: %d\n", i);
if (*did_gc_hook) (*did_gc_hook)();
}
static struct mdebug_extra_func_info *
non_heuristic_proc_desc (CORE_ADDR pc, CORE_ADDR *addrptr)
{
CORE_ADDR startaddr;
struct mdebug_extra_func_info *proc_desc;
struct block *b = block_for_pc (pc);
struct symbol *sym;
struct obj_section *sec;
struct mips_objfile_private *priv;
find_pc_partial_function (pc, NULL, &startaddr, NULL);
if (addrptr)
*addrptr = startaddr;
priv = NULL;
sec = find_pc_section (pc);
if (sec != NULL)
{
priv = (struct mips_objfile_private *) objfile_data (sec->objfile, mips_pdr_data);
/* Search the ".pdr" section generated by GAS. This includes most of
the information normally found in ECOFF PDRs. */
the_bfd = sec->objfile->obfd;
if (priv == NULL
&& (the_bfd->format == bfd_object
&& bfd_get_flavour (the_bfd) == bfd_target_elf_flavour
&& elf_elfheader (the_bfd)->e_ident[EI_CLASS] == ELFCLASS64))
{
/* Right now GAS only outputs the address as a four-byte sequence.
This means that we should not bother with this method on 64-bit
targets (until that is fixed). */
priv = obstack_alloc (&sec->objfile->objfile_obstack,
sizeof (struct mips_objfile_private));
priv->size = 0;
set_objfile_data (sec->objfile, mips_pdr_data, priv);
}
else if (priv == NULL)
{
asection *bfdsec;
priv = obstack_alloc (&sec->objfile->objfile_obstack,
sizeof (struct mips_objfile_private));
bfdsec = bfd_get_section_by_name (sec->objfile->obfd, ".pdr");
if (bfdsec != NULL)
{
priv->size = bfd_section_size (sec->objfile->obfd, bfdsec);
priv->contents = obstack_alloc (&sec->objfile->objfile_obstack,
priv->size);
bfd_get_section_contents (sec->objfile->obfd, bfdsec,
priv->contents, 0, priv->size);
/* In general, the .pdr section is sorted. However, in the
presence of multiple code sections (and other corner cases)
it can become unsorted. Sort it so that we can use a faster
binary search. */
qsort (priv->contents, priv->size / 32, 32,
compare_pdr_entries);
}
else
priv->size = 0;
set_objfile_data (sec->objfile, mips_pdr_data, priv);
}
the_bfd = NULL;
if (priv->size != 0)
{
int low, mid, high;
char *ptr;
CORE_ADDR pdr_pc;
low = 0;
high = priv->size / 32;
/* We've found a .pdr section describing this objfile. We want to
find the entry which describes this code address. The .pdr
information is not very descriptive; we have only a function
start address. We have to look for the closest entry, because
the local symbol at the beginning of this function may have
been stripped - so if we ask the symbol table for the start
address we may get a preceding global function. */
/* First, find the last .pdr entry starting at or before PC. */
do
{
mid = (low + high) / 2;
ptr = priv->contents + mid * 32;
pdr_pc = bfd_get_signed_32 (sec->objfile->obfd, ptr);
pdr_pc += ANOFFSET (sec->objfile->section_offsets,
SECT_OFF_TEXT (sec->objfile));
if (pdr_pc > pc)
high = mid;
else
low = mid + 1;
}
while (low != high);
/* Both low and high point one past the PDR of interest. If
both are zero, that means this PC is before any region
covered by a PDR, i.e. pdr_pc for the first PDR entry is
greater than PC. */
if (low > 0)
{
ptr = priv->contents + (low - 1) * 32;
pdr_pc = bfd_get_signed_32 (sec->objfile->obfd, ptr);
pdr_pc += ANOFFSET (sec->objfile->section_offsets,
SECT_OFF_TEXT (sec->objfile));
}
/* We don't have a range, so we have no way to know for sure
whether we're in the correct PDR or a PDR for a preceding
function and the current function was a stripped local
symbol. But if the PDR's PC is at least as great as the
best guess from the symbol table, assume that it does cover
the right area; if a .pdr section is present at all then
nearly every function will have an entry. The biggest exception
will be the dynamic linker stubs; conveniently these are
placed before .text instead of after. */
if (pc >= pdr_pc && pdr_pc >= startaddr)
{
struct symbol *sym = find_pc_function (pc);
if (addrptr)
*addrptr = pdr_pc;
/* Fill in what we need of the proc_desc. */
proc_desc = (struct mdebug_extra_func_info *)
obstack_alloc (&sec->objfile->objfile_obstack,
sizeof (struct mdebug_extra_func_info));
PROC_LOW_ADDR (proc_desc) = pdr_pc;
PROC_FRAME_OFFSET (proc_desc)
= bfd_get_signed_32 (sec->objfile->obfd, ptr + 20);
PROC_FRAME_REG (proc_desc) = bfd_get_32 (sec->objfile->obfd,
ptr + 24);
PROC_REG_MASK (proc_desc) = bfd_get_32 (sec->objfile->obfd,
ptr + 4);
PROC_FREG_MASK (proc_desc) = bfd_get_32 (sec->objfile->obfd,
ptr + 12);
PROC_REG_OFFSET (proc_desc)
= bfd_get_signed_32 (sec->objfile->obfd, ptr + 8);
PROC_FREG_OFFSET (proc_desc)
= bfd_get_signed_32 (sec->objfile->obfd, ptr + 16);
PROC_PC_REG (proc_desc) = bfd_get_32 (sec->objfile->obfd,
ptr + 28);
proc_desc->pdr.isym = (long) sym;
return proc_desc;
}
}
}
if (b == NULL)
return NULL;
if (startaddr > BLOCK_START (b))
{
/* This is the "pathological" case referred to in a comment in
print_frame_info. It might be better to move this check into
symbol reading. */
return NULL;
}
sym = lookup_symbol (MDEBUG_EFI_SYMBOL_NAME, b, LABEL_DOMAIN, 0);
/* If we never found a PDR for this function in symbol reading, then
examine prologues to find the information. */
if (sym)
{
proc_desc = (struct mdebug_extra_func_info *) SYMBOL_VALUE (sym);
if (PROC_FRAME_REG (proc_desc) == -1)
return NULL;
else
return proc_desc;
}
else
return NULL;
}
