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h8300.c (F): New.

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* config/h8300/h8300.c (F): New.
(Fpa): New.
(h8300_emit_stack_adjustment): Call them.
(push): Likewise.
(h8300_push_pop): Likewise.
(h8300_expand_prologue): Likewise.
* config/h8300/h8300.h (DWARF2_DEBUGGING_INFO): Define.
(MUST_USE_SJLJ_EXCEPTIONS): Define.
(INCOMING_RETURN_ADDR_RTX): Define.
(INCOMING_FRAME_SP_OFFSET): Define.
(DWARF_CIE_DATA_ALIGNMENT): Define.

From-SVN: r152795
This commit is contained in:
DJ Delorie 2009-10-14 22:30:48 -04:00 committed by DJ Delorie
parent 5cab701369
commit 186746591a
3 changed files with 72 additions and 13 deletions
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14
gcc/ChangeLog
View File

@ -1,3 +1,17 @@
2009-10-14 DJ Delorie <dj@redhat.com>
* config/h8300/h8300.c (F): New.
(Fpa): New.
(h8300_emit_stack_adjustment): Call them.
(push): Likewise.
(h8300_push_pop): Likewise.
(h8300_expand_prologue): Likewise.
* config/h8300/h8300.h (DWARF2_DEBUGGING_INFO): Define.
(MUST_USE_SJLJ_EXCEPTIONS): Define.
(INCOMING_RETURN_ADDR_RTX): Define.
(INCOMING_FRAME_SP_OFFSET): Define.
(DWARF_CIE_DATA_ALIGNMENT): Define.
2009-10-14 Jakub Jelinek <jakub@redhat.com>
* stor-layout.c (place_field): Don't emit -Wpadded warnings for

60
gcc/config/h8300/h8300.c
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@ -507,6 +507,32 @@ byte_reg (rtx x, int b)
&& call_used_regs[regno] \
&& !current_function_is_leaf)))
/* We use this to wrap all emitted insns in the prologue. */
static rtx
F (rtx x)
{
RTX_FRAME_RELATED_P (x) = 1;
return x;
}
/* Mark all the subexpressions of the PARALLEL rtx PAR as
frame-related. Return PAR.
dwarf2out.c:dwarf2out_frame_debug_expr ignores sub-expressions of a
PARALLEL rtx other than the first if they do not have the
FRAME_RELATED flag set on them. */
static rtx
Fpa (rtx par)
{
int len = XVECLEN (par, 0);
int i;
for (i = 0; i < len; i++)
F (XVECEXP (par, 0, i));
return par;
}
/* Output assembly language to FILE for the operation OP with operand size
SIZE to adjust the stack pointer. */
@ -526,22 +552,27 @@ h8300_emit_stack_adjustment (int sign, HOST_WIDE_INT size)
&& !(cfun->static_chain_decl != NULL && sign < 0))
{
rtx r3 = gen_rtx_REG (Pmode, 3);
emit_insn (gen_movhi (r3, GEN_INT (sign * size)));
emit_insn (gen_addhi3 (stack_pointer_rtx,
stack_pointer_rtx, r3));
F (emit_insn (gen_movhi (r3, GEN_INT (sign * size))));
F (emit_insn (gen_addhi3 (stack_pointer_rtx,
stack_pointer_rtx, r3)));
}
else
{
/* The stack adjustment made here is further optimized by the
splitter. In case of H8/300, the splitter always splits the
addition emitted here to make the adjustment
interrupt-safe. */
addition emitted here to make the adjustment interrupt-safe.
FIXME: We don't always tag those, because we don't know what
the splitter will do. */
if (Pmode == HImode)
emit_insn (gen_addhi3 (stack_pointer_rtx,
stack_pointer_rtx, GEN_INT (sign * size)));
{
rtx x = emit_insn (gen_addhi3 (stack_pointer_rtx,
stack_pointer_rtx, GEN_INT (sign * size)));
if (size < 4)
F (x);
}
else
emit_insn (gen_addsi3 (stack_pointer_rtx,
stack_pointer_rtx, GEN_INT (sign * size)));
F (emit_insn (gen_addsi3 (stack_pointer_rtx,
stack_pointer_rtx, GEN_INT (sign * size))));
}
}
@ -591,7 +622,7 @@ push (int rn)
x = gen_push_h8300hs_advanced (reg);
else
x = gen_push_h8300hs_normal (reg);
x = emit_insn (x);
x = F (emit_insn (x));
REG_NOTES (x) = gen_rtx_EXPR_LIST (REG_INC, stack_pointer_rtx, 0);
}
@ -634,7 +665,7 @@ h8300_push_pop (int regno, int nregs, int pop_p, int return_p)
{
int i, j;
rtvec vec;
rtx sp, offset;
rtx sp, offset, x;
/* See whether we can use a simple push or pop. */
if (!return_p && nregs == 1)
@ -685,7 +716,10 @@ h8300_push_pop (int regno, int nregs, int pop_p, int return_p)
RTVEC_ELT (vec, i + j) = gen_rtx_SET (VOIDmode, sp,
gen_rtx_PLUS (Pmode, sp, offset));
emit_insn (gen_rtx_PARALLEL (VOIDmode, vec));
x = gen_rtx_PARALLEL (VOIDmode, vec);
if (!pop_p)
x = Fpa (x);
emit_insn (x);
}
/* Return true if X has the value sp + OFFSET. */
@ -820,7 +854,7 @@ h8300_expand_prologue (void)
{
/* Push fp. */
push (HARD_FRAME_POINTER_REGNUM);
emit_move_insn (hard_frame_pointer_rtx, stack_pointer_rtx);
F (emit_move_insn (hard_frame_pointer_rtx, stack_pointer_rtx));
}
/* Push the rest of the registers in ascending order. */

11
gcc/config/h8300/h8300.h
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@ -147,6 +147,17 @@ extern const char * const *h8_reg_names;
/* Show we can debug even without a frame pointer. */
/* #define CAN_DEBUG_WITHOUT_FP */
/* We want dwarf2 info available to gdb... */
#define DWARF2_DEBUGGING_INFO 1
/* ... but we don't actually support full dwarf2 EH. */
#define MUST_USE_SJLJ_EXCEPTIONS 1
/* The return address is pushed on the stack. */
#define INCOMING_RETURN_ADDR_RTX gen_rtx_MEM (Pmode, gen_rtx_REG (Pmode, STACK_POINTER_REGNUM))
#define INCOMING_FRAME_SP_OFFSET (POINTER_SIZE / 8)
#define DWARF_CIE_DATA_ALIGNMENT 2
/* Define this if addresses of constant functions
shouldn't be put through pseudo regs where they can be cse'd.
Desirable on machines where ordinary constants are expensive