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* dwarf2-frame.c (dwarf2_frame_ops init_reg): Add "next_frame" 

argument.
	(dwarf2_frame_default_init_reg): Likewise.
	(dwarf2_frame_set_init_reg): Update init_reg arg.
	(dwarf2_frame_init_reg): Take "next_frame" and pass it to
	ops->init_reg().
	(dwarf2_frame_cache): Pass next_frame to dwarf2_frame_init_reg.
	* dwarf2-frame.h (dwarf2-frame_set_init_reg): Update declaration.
	* cris-tdep.c (cris_dwarf2_frame_init_reg): Add next_frame arg.
	* s390-tdep.c (s390_dwarf2_frame_init_reg): Likewise.
	* sh-tdep.c (sh_dwarf2_frame_init_reg): Likewise.
	* sparc64-tdep.c (sparc64_dwarf2_frame_init_reg): Likewise.
	* sparc-tdep.c (sparc32_struct_return_from_sym): New function.
	(sparc32_frame_cache): Call it.
	(sparc32_dwarf2_struct_return_p): New function.
	(sparc_dwarf2_frame_init_reg): Use it to determine if the function
	returns a structure and thus we have to indicate the return PC and
	NPC are 4 bytes later than usual.
cr-0x5f1
David S. Miller 21 years ago
parent
0781db9f10
commit
aff37fc18f
8 changed files with 77 additions and 26 deletions
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  1. 18
      gdb/ChangeLog
  2. 3
      gdb/cris-tdep.c
  3. 16
      gdb/dwarf2-frame.c
  4. 3
      gdb/dwarf2-frame.h
  5. 3
      gdb/s390-tdep.c
  6. 3
      gdb/sh-tdep.c
  7. 54
      gdb/sparc-tdep.c
  8. 3
      gdb/sparc64-tdep.c

18
gdb/ChangeLog
View File

@ -6,6 +6,24 @@
* sparc-linux-tdep.c (sparc32_linux_sigframe_init): Pull register
window out of the correct stack frame.
* sparc64-linux-tdep.c (sparc64_linux_sigframe_init): Likewise.
* dwarf2-frame.c (dwarf2_frame_ops init_reg): Add "next_frame"
argument.
(dwarf2_frame_default_init_reg): Likewise.
(dwarf2_frame_set_init_reg): Update init_reg arg.
(dwarf2_frame_init_reg): Take "next_frame" and pass it to
ops->init_reg().
(dwarf2_frame_cache): Pass next_frame to dwarf2_frame_init_reg.
* dwarf2-frame.h (dwarf2-frame_set_init_reg): Update declaration.
* cris-tdep.c (cris_dwarf2_frame_init_reg): Add next_frame arg.
* s390-tdep.c (s390_dwarf2_frame_init_reg): Likewise.
* sh-tdep.c (sh_dwarf2_frame_init_reg): Likewise.
* sparc64-tdep.c (sparc64_dwarf2_frame_init_reg): Likewise.
* sparc-tdep.c (sparc32_struct_return_from_sym): New function.
(sparc32_frame_cache): Call it.
(sparc32_dwarf2_struct_return_p): New function.
(sparc_dwarf2_frame_init_reg): Use it to determine if the function
returns a structure and thus we have to indicate the return PC and
NPC are 4 bytes later than usual.
2006-04-04 David S. Miller <davem@davemloft.net>

3
gdb/cris-tdep.c
View File

@ -1852,7 +1852,8 @@ cris_dwarf2_reg_to_regnum (int reg)
static void
cris_dwarf2_frame_init_reg (struct gdbarch *gdbarch, int regnum,
struct dwarf2_frame_state_reg *reg)
struct dwarf2_frame_state_reg *reg,
struct frame_info *next_frame)
{
/* The return address column. */
if (regnum == PC_REGNUM)

16
gdb/dwarf2-frame.c
View File

@ -506,7 +506,8 @@ static struct gdbarch_data *dwarf2_frame_data;
struct dwarf2_frame_ops
{
/* Pre-initialize the register state REG for register REGNUM. */
void (*init_reg) (struct gdbarch *, int, struct dwarf2_frame_state_reg *);
void (*init_reg) (struct gdbarch *, int, struct dwarf2_frame_state_reg *,
struct frame_info *);
/* Check whether the frame preceding NEXT_FRAME will be a signal
trampoline. */
@ -518,7 +519,8 @@ struct dwarf2_frame_ops
static void
dwarf2_frame_default_init_reg (struct gdbarch *gdbarch, int regnum,
struct dwarf2_frame_state_reg *reg)
struct dwarf2_frame_state_reg *reg,
struct frame_info *next_frame)
{
/* If we have a register that acts as a program counter, mark it as
a destination for the return address. If we have a register that
@ -570,7 +572,8 @@ dwarf2_frame_init (struct obstack *obstack)
void
dwarf2_frame_set_init_reg (struct gdbarch *gdbarch,
void (*init_reg) (struct gdbarch *, int,
struct dwarf2_frame_state_reg *))
struct dwarf2_frame_state_reg *,
struct frame_info *))
{
struct dwarf2_frame_ops *ops = gdbarch_data (gdbarch, dwarf2_frame_data);
@ -581,11 +584,12 @@ dwarf2_frame_set_init_reg (struct gdbarch *gdbarch,
static void
dwarf2_frame_init_reg (struct gdbarch *gdbarch, int regnum,
struct dwarf2_frame_state_reg *reg)
struct dwarf2_frame_state_reg *reg,
struct frame_info *next_frame)
{
struct dwarf2_frame_ops *ops = gdbarch_data (gdbarch, dwarf2_frame_data);
ops->init_reg (gdbarch, regnum, reg);
ops->init_reg (gdbarch, regnum, reg, next_frame);
}
/* Set the architecture-specific signal trampoline recognition
@ -713,7 +717,7 @@ dwarf2_frame_cache (struct frame_info *next_frame, void **this_cache)
int regnum;
for (regnum = 0; regnum < num_regs; regnum++)
dwarf2_frame_init_reg (gdbarch, regnum, &cache->reg[regnum]);
dwarf2_frame_init_reg (gdbarch, regnum, &cache->reg[regnum], next_frame);
}
/* Go through the DWARF2 CFI generated table and save its register

3
gdb/dwarf2-frame.h
View File

@ -79,7 +79,8 @@ struct dwarf2_frame_state_reg
extern void dwarf2_frame_set_init_reg (struct gdbarch *gdbarch,
void (*init_reg) (struct gdbarch *, int,
struct dwarf2_frame_state_reg *));
struct dwarf2_frame_state_reg *,
struct frame_info *));
/* Set the architecture-specific signal trampoline recognition
function for GDBARCH to SIGNAL_FRAME_P. */

3
gdb/s390-tdep.c
View File

@ -2279,7 +2279,8 @@ s390_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame)
static void
s390_dwarf2_frame_init_reg (struct gdbarch *gdbarch, int regnum,
struct dwarf2_frame_state_reg *reg)
struct dwarf2_frame_state_reg *reg,
struct frame_info *next_frame)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);

3
gdb/sh-tdep.c
View File

@ -2123,7 +2123,8 @@ sh_sh2a_register_sim_regno (int nr)
static void
sh_dwarf2_frame_init_reg (struct gdbarch *gdbarch, int regnum,
struct dwarf2_frame_state_reg *reg)
struct dwarf2_frame_state_reg *reg,
struct frame_info *next_frame)
{
/* Mark the PC as the destination for the return address. */
if (regnum == PC_REGNUM)

54
gdb/sparc-tdep.c
View File

@ -680,6 +680,23 @@ sparc_frame_cache (struct frame_info *next_frame, void **this_cache)
return cache;
}
static int
sparc32_struct_return_from_sym (struct symbol *sym)
{
struct type *type = check_typedef (SYMBOL_TYPE (sym));
enum type_code code = TYPE_CODE (type);
if (code == TYPE_CODE_FUNC || code == TYPE_CODE_METHOD)
{
type = check_typedef (TYPE_TARGET_TYPE (type));
if (sparc_structure_or_union_p (type)
|| (sparc_floating_p (type) && TYPE_LENGTH (type) == 16))
return 1;
}
return 0;
}
struct sparc_frame_cache *
sparc32_frame_cache (struct frame_info *next_frame, void **this_cache)
{
@ -694,16 +711,7 @@ sparc32_frame_cache (struct frame_info *next_frame, void **this_cache)
sym = find_pc_function (cache->pc);
if (sym)
{
struct type *type = check_typedef (SYMBOL_TYPE (sym));
enum type_code code = TYPE_CODE (type);
if (code == TYPE_CODE_FUNC || code == TYPE_CODE_METHOD)
{
type = check_typedef (TYPE_TARGET_TYPE (type));
if (sparc_structure_or_union_p (type)
|| (sparc_floating_p (type) && TYPE_LENGTH (type) == 16))
cache->struct_return_p = 1;
}
cache->struct_return_p = sparc32_struct_return_from_sym (sym);
}
else
{
@ -995,10 +1003,24 @@ sparc32_stabs_argument_has_addr (struct gdbarch *gdbarch, struct type *type)
|| (sparc_floating_p (type) && TYPE_LENGTH (type) == 16));
}
static int
sparc32_dwarf2_struct_return_p (struct frame_info *next_frame)
{
CORE_ADDR pc = frame_unwind_address_in_block (next_frame);
struct symbol *sym = find_pc_function (pc);
if (sym)
return sparc32_struct_return_from_sym (sym);
return 0;
}
static void
sparc32_dwarf2_frame_init_reg (struct gdbarch *gdbarch, int regnum,
struct dwarf2_frame_state_reg *reg)
struct dwarf2_frame_state_reg *reg,
struct frame_info *next_frame)
{
int off;
switch (regnum)
{
case SPARC_G0_REGNUM:
@ -1011,12 +1033,14 @@ sparc32_dwarf2_frame_init_reg (struct gdbarch *gdbarch, int regnum,
reg->how = DWARF2_FRAME_REG_CFA;
break;
case SPARC32_PC_REGNUM:
reg->how = DWARF2_FRAME_REG_RA_OFFSET;
reg->loc.offset = 8;
break;
case SPARC32_NPC_REGNUM:
reg->how = DWARF2_FRAME_REG_RA_OFFSET;
reg->loc.offset = 12;
off = 8;
if (sparc32_dwarf2_struct_return_p (next_frame))
off += 4;
if (regnum == SPARC32_NPC_REGNUM)
off += 4;
reg->loc.offset = off;
break;
}
}

3
gdb/sparc64-tdep.c
View File

@ -1106,7 +1106,8 @@ sparc64_return_value (struct gdbarch *gdbarch, struct type *type,
static void
sparc64_dwarf2_frame_init_reg (struct gdbarch *gdbarch, int regnum,
struct dwarf2_frame_state_reg *reg)
struct dwarf2_frame_state_reg *reg,
struct frame_info *next_frame)
{
switch (regnum)
{

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