#include "dwarf2loc.h"
#include "dwarf2-frame.h"
#include "compile/compile.h"
+#include <algorithm>
extern int dwarf_always_disassemble;
/* Intersect callers. */
- callers = min (result->callers, length);
+ callers = std::min ((long) result->callers, length);
for (idx = 0; idx < callers; idx++)
if (result->call_site[idx] != VEC_index (call_sitep, chain, idx))
{
/* Intersect callees. */
- callees = min (result->callees, length);
+ callees = std::min ((long) result->callees, length);
for (idx = 0; idx < callees; idx++)
if (result->call_site[result->length - 1 - idx]
!= VEC_index (call_sitep, chain, length - 1 - idx))
}
\f
-/* Helper functions and baton for dwarf2_loc_desc_needs_frame. */
+/* Helper functions and baton for dwarf2_loc_desc_get_symbol_read_needs. */
-struct needs_frame_baton
+struct symbol_needs_baton
{
- int needs_frame;
+ enum symbol_needs_kind needs;
struct dwarf2_per_cu_data *per_cu;
};
/* Reads from registers do require a frame. */
static CORE_ADDR
-needs_frame_read_addr_from_reg (void *baton, int regnum)
+symbol_needs_read_addr_from_reg (void *baton, int regnum)
{
- struct needs_frame_baton *nf_baton = (struct needs_frame_baton *) baton;
+ struct symbol_needs_baton *nf_baton = (struct symbol_needs_baton *) baton;
- nf_baton->needs_frame = 1;
+ nf_baton->needs = SYMBOL_NEEDS_FRAME;
return 1;
}
Reads from registers do require a frame. */
static struct value *
-needs_frame_get_reg_value (void *baton, struct type *type, int regnum)
+symbol_needs_get_reg_value (void *baton, struct type *type, int regnum)
{
- struct needs_frame_baton *nf_baton = (struct needs_frame_baton *) baton;
+ struct symbol_needs_baton *nf_baton = (struct symbol_needs_baton *) baton;
- nf_baton->needs_frame = 1;
+ nf_baton->needs = SYMBOL_NEEDS_FRAME;
return value_zero (type, not_lval);
}
/* Reads from memory do not require a frame. */
static void
-needs_frame_read_mem (void *baton, gdb_byte *buf, CORE_ADDR addr, size_t len)
+symbol_needs_read_mem (void *baton, gdb_byte *buf, CORE_ADDR addr, size_t len)
{
memset (buf, 0, len);
}
/* Frame-relative accesses do require a frame. */
static void
-needs_frame_frame_base (void *baton, const gdb_byte **start, size_t * length)
+symbol_needs_frame_base (void *baton, const gdb_byte **start, size_t * length)
{
static gdb_byte lit0 = DW_OP_lit0;
- struct needs_frame_baton *nf_baton = (struct needs_frame_baton *) baton;
+ struct symbol_needs_baton *nf_baton = (struct symbol_needs_baton *) baton;
*start = &lit0;
*length = 1;
- nf_baton->needs_frame = 1;
+ nf_baton->needs = SYMBOL_NEEDS_FRAME;
}
/* CFA accesses require a frame. */
static CORE_ADDR
-needs_frame_frame_cfa (void *baton)
+symbol_needs_frame_cfa (void *baton)
{
- struct needs_frame_baton *nf_baton = (struct needs_frame_baton *) baton;
+ struct symbol_needs_baton *nf_baton = (struct symbol_needs_baton *) baton;
- nf_baton->needs_frame = 1;
+ nf_baton->needs = SYMBOL_NEEDS_FRAME;
return 1;
}
-/* Thread-local accesses do require a frame. */
+/* Thread-local accesses require registers, but not a frame. */
static CORE_ADDR
-needs_frame_tls_address (void *baton, CORE_ADDR offset)
+symbol_needs_tls_address (void *baton, CORE_ADDR offset)
{
- struct needs_frame_baton *nf_baton = (struct needs_frame_baton *) baton;
+ struct symbol_needs_baton *nf_baton = (struct symbol_needs_baton *) baton;
- nf_baton->needs_frame = 1;
+ if (nf_baton->needs <= SYMBOL_NEEDS_REGISTERS)
+ nf_baton->needs = SYMBOL_NEEDS_REGISTERS;
return 1;
}
-/* Helper interface of per_cu_dwarf_call for dwarf2_loc_desc_needs_frame. */
+/* Helper interface of per_cu_dwarf_call for
+ dwarf2_loc_desc_get_symbol_read_needs. */
static void
-needs_frame_dwarf_call (struct dwarf_expr_context *ctx, cu_offset die_offset)
+symbol_needs_dwarf_call (struct dwarf_expr_context *ctx, cu_offset die_offset)
{
- struct needs_frame_baton *nf_baton = (struct needs_frame_baton *) ctx->baton;
+ struct symbol_needs_baton *nf_baton =
+ (struct symbol_needs_baton *) ctx->baton;
per_cu_dwarf_call (ctx, die_offset, nf_baton->per_cu,
ctx->funcs->get_frame_pc, ctx->baton);
enum call_site_parameter_kind kind,
union call_site_parameter_u kind_u, int deref_size)
{
- struct needs_frame_baton *nf_baton = (struct needs_frame_baton *) ctx->baton;
+ struct symbol_needs_baton *nf_baton =
+ (struct symbol_needs_baton *) ctx->baton;
- nf_baton->needs_frame = 1;
+ nf_baton->needs = SYMBOL_NEEDS_FRAME;
/* The expression may require some stub values on DWARF stack. */
dwarf_expr_push_address (ctx, 0, 0);
return 1;
}
-/* Virtual method table for dwarf2_loc_desc_needs_frame below. */
+/* Virtual method table for dwarf2_loc_desc_get_symbol_read_needs
+ below. */
-static const struct dwarf_expr_context_funcs needs_frame_ctx_funcs =
+static const struct dwarf_expr_context_funcs symbol_needs_ctx_funcs =
{
- needs_frame_read_addr_from_reg,
- needs_frame_get_reg_value,
- needs_frame_read_mem,
- needs_frame_frame_base,
- needs_frame_frame_cfa,
- needs_frame_frame_cfa, /* get_frame_pc */
- needs_frame_tls_address,
- needs_frame_dwarf_call,
+ symbol_needs_read_addr_from_reg,
+ symbol_needs_get_reg_value,
+ symbol_needs_read_mem,
+ symbol_needs_frame_base,
+ symbol_needs_frame_cfa,
+ symbol_needs_frame_cfa, /* get_frame_pc */
+ symbol_needs_tls_address,
+ symbol_needs_dwarf_call,
NULL, /* get_base_type */
needs_dwarf_reg_entry_value,
needs_get_addr_index,
needs_get_obj_addr
};
-/* Return non-zero iff the location expression at DATA (length SIZE)
- requires a frame to evaluate. */
+/* Compute the correct symbol_needs_kind value for the location
+ expression at DATA (length SIZE). */
-static int
-dwarf2_loc_desc_needs_frame (const gdb_byte *data, size_t size,
- struct dwarf2_per_cu_data *per_cu)
+static enum symbol_needs_kind
+dwarf2_loc_desc_get_symbol_read_needs (const gdb_byte *data, size_t size,
+ struct dwarf2_per_cu_data *per_cu)
{
- struct needs_frame_baton baton;
+ struct symbol_needs_baton baton;
struct dwarf_expr_context *ctx;
int in_reg;
struct cleanup *old_chain;
struct objfile *objfile = dwarf2_per_cu_objfile (per_cu);
- baton.needs_frame = 0;
+ baton.needs = SYMBOL_NEEDS_NONE;
baton.per_cu = per_cu;
ctx = new_dwarf_expr_context ();
ctx->ref_addr_size = dwarf2_per_cu_ref_addr_size (per_cu);
ctx->offset = dwarf2_per_cu_text_offset (per_cu);
ctx->baton = &baton;
- ctx->funcs = &needs_frame_ctx_funcs;
+ ctx->funcs = &symbol_needs_ctx_funcs;
dwarf_expr_eval (ctx, data, size);
do_cleanups (old_chain);
- return baton.needs_frame || in_reg;
+ if (in_reg)
+ baton.needs = SYMBOL_NEEDS_FRAME;
+ return baton.needs;
}
/* A helper function that throws an unimplemented error mentioning a
break;
case DW_OP_GNU_push_tls_address:
+ case DW_OP_form_tls_address:
unimplemented (op);
break;
dlbaton->size);
}
-/* Return non-zero iff we need a frame to evaluate SYMBOL. */
-static int
-locexpr_read_needs_frame (struct symbol *symbol)
+/* Implementation of get_symbol_read_needs from
+ symbol_computed_ops. */
+
+static enum symbol_needs_kind
+locexpr_get_symbol_read_needs (struct symbol *symbol)
{
struct dwarf2_locexpr_baton *dlbaton
= (struct dwarf2_locexpr_baton *) SYMBOL_LOCATION_BATON (symbol);
- return dwarf2_loc_desc_needs_frame (dlbaton->data, dlbaton->size,
- dlbaton->per_cu);
+ return dwarf2_loc_desc_get_symbol_read_needs (dlbaton->data, dlbaton->size,
+ dlbaton->per_cu);
}
/* Return true if DATA points to the end of a piece. END is one past
&& (data[0] == DW_OP_addr
|| (addr_size == 4 && data[0] == DW_OP_const4u)
|| (addr_size == 8 && data[0] == DW_OP_const8u))
- && data[1 + addr_size] == DW_OP_GNU_push_tls_address
+ && (data[1 + addr_size] == DW_OP_GNU_push_tls_address
+ || data[1 + addr_size] == DW_OP_form_tls_address)
&& piece_end_p (data + 2 + addr_size, end))
{
ULONGEST offset;
&& data + 1 + (leb128_size = skip_leb128 (data + 1, end)) < end
&& data[0] == DW_OP_GNU_const_index
&& leb128_size > 0
- && data[1 + leb128_size] == DW_OP_GNU_push_tls_address
+ && (data[1 + leb128_size] == DW_OP_GNU_push_tls_address
+ || data[1 + leb128_size] == DW_OP_form_tls_address)
&& piece_end_p (data + 2 + leb128_size, end))
{
uint64_t offset;
const struct symbol_computed_ops dwarf2_locexpr_funcs = {
locexpr_read_variable,
locexpr_read_variable_at_entry,
- locexpr_read_needs_frame,
+ locexpr_get_symbol_read_needs,
locexpr_describe_location,
0, /* location_has_loclist */
locexpr_tracepoint_var_ref,
return value_of_dwarf_block_entry (SYMBOL_TYPE (symbol), frame, data, size);
}
-/* Return non-zero iff we need a frame to evaluate SYMBOL. */
-static int
-loclist_read_needs_frame (struct symbol *symbol)
+/* Implementation of get_symbol_read_needs from
+ symbol_computed_ops. */
+
+static enum symbol_needs_kind
+loclist_symbol_needs (struct symbol *symbol)
{
/* If there's a location list, then assume we need to have a frame
to choose the appropriate location expression. With tracking of
is disabled in GCC at the moment until we figure out how to
represent it. */
- return 1;
+ return SYMBOL_NEEDS_FRAME;
}
/* Print a natural-language description of SYMBOL to STREAM. This
const struct symbol_computed_ops dwarf2_loclist_funcs = {
loclist_read_variable,
loclist_read_variable_at_entry,
- loclist_read_needs_frame,
+ loclist_symbol_needs,
loclist_describe_location,
1, /* location_has_loclist */
loclist_tracepoint_var_ref,
projects / deliverable / binutils-gdb.git / blobdiff