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Revert use of integer_param_regs_saved_in_caller_frame in i386 gdbarch_tdep. 

This is no longer useful, as it was introduced to reuse the funcall
handling code in amd64-tdep.c in the context of x64-windows. But
we have since then changed the implementations to be completely
independent of each other.

This reverts the non-windows-specific part of the change called:
    amd64-windows: 32 bytes allocated on stack by caller for integer
    parameter regs
(the x64-windows portion has already been reverted)

gdb/ChangeLog:

        Revert:
        * i386-tdep.h (struct gdbarch_tdep): Add new field
        integer_param_regs_saved_in_caller_frame.
        * amd64-tdep.c (amd64_push_dummy_call): Allocate some memory on
        stack if tdep->integer_param_regs_saved_in_caller_frame is set.
This commit is contained in:
Joel Brobecker 2013-09-24 16:13:49 +00:00
parent 20c2e3e0a3
commit c1459fd652
3 changed files with 12 additions and 19 deletions
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8
gdb/ChangeLog
View File

@ -1,3 +1,11 @@
2013-09-24 Joel Brobecker <brobecker@adacore.com>
Revert:
* i386-tdep.h (struct gdbarch_tdep): Add new field
integer_param_regs_saved_in_caller_frame.
* amd64-tdep.c (amd64_push_dummy_call): Allocate some memory on
stack if tdep->integer_param_regs_saved_in_caller_frame is set.
2013-09-24 Joel Brobecker <brobecker@adacore.com>
* amd64-tdep.c: #include "value.h"

5
gdb/amd64-tdep.c
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@ -926,11 +926,6 @@ amd64_push_dummy_call (struct gdbarch *gdbarch, struct value *function,
regcache_cooked_write (regcache, arg_regnum, buf);
}
/* Reserve some memory on the stack for the integer-parameter registers,
if required by the ABI. */
if (tdep->integer_param_regs_saved_in_caller_frame)
sp -= tdep->call_dummy_num_integer_regs * 8;
/* Store return address. */
sp -= 8;
store_unsigned_integer (buf, 8, byte_order, bp_addr);

18
gdb/i386-tdep.h
View File

@ -81,12 +81,12 @@ struct gdbarch_tdep
int call_dummy_num_integer_regs;
int *call_dummy_integer_regs;
/* Used on amd64 only. Classify TYPE according to calling conventions,
and store the result in CLASS. */
/* Classify TYPE according to calling conventions, and store
the result in CLASS. Used on amd64 only. */
void (*classify) (struct type *type, enum amd64_reg_class class[2]);
/* Used on amd64 only. Non-zero if the first few MEMORY arguments
should be passed by pointer.
/* Non-zero if the first few MEMORY arguments should be passed by
pointer.
More precisely, MEMORY arguments are passed through the stack.
But certain architectures require that their address be passed
@ -94,16 +94,6 @@ struct gdbarch_tdep
available for argument passing. */
int memory_args_by_pointer;
/* Used on amd64 only.
If non-zero, then the callers of a function are expected to reserve
some space in the stack just before the area where the PC is saved
so that the callee may save the integer-parameter registers there.
The amount of space is dependent on the list of registers used for
integer parameter passing (see component call_dummy_num_integer_regs
above). */
int integer_param_regs_saved_in_caller_frame;
/* Floating-point registers. */
struct regset *fpregset;
size_t sizeof_fpregset;