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* config/tc-mips.c (load_delay_nop): New function.

Browse Source 
(load_address, macro): Use load_delay_nop() to build a nop
which can be omitted with gpr_interlocks.

* gas/mips/lb-xgot-ilocks.d: Remove nops in load delay slot.
* gas/mips/mips-abi32-pic.d: Likewise.
* gas/mips/mips-abi32-pic2.d: Likewise.
* gas/mips/mips-gp32-fp32-pic.d: Likewise.
* gas/mips/mips-gp32-fp64-pic.d: Likewise.
* gas/mips/mips-gp64-fp32-pic.d: Likewise.
* gas/mips/mips-gp64-fp64-pic.d: Likewise.
* gas/mips/relax-swap1-mips2.d: Likewise.
* gas/mips/lb-svr4pic-ilocks.d: New test.
* gas/mips/mips.exp: Run it.
This commit is contained in:
Thiemo Seufer
2004-04-22 18:13:56 +00:00
parent 24772049ed
commit 269137b29a
13 changed files with 936 additions and 870 deletions
Download Patch File Download Diff File Expand all files Collapse all files

45
gas/config/tc-mips.c
View File

@@ -3783,6 +3783,13 @@ load_register (int reg, expressionS *ep, int dbl)
macro_build (&lo32, "ori", "t,r,i", reg, freg, BFD_RELOC_LO16);
}
static inline void
load_delay_nop (void)
{
if (!gpr_interlocks)
macro_build (NULL, "nop", "");
}
/* Load an address into a register. */
static void
@@ -3916,7 +3923,7 @@ load_address (int reg, expressionS *ep, int *used_at)
ep->X_add_number = 0;
macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg,
BFD_RELOC_MIPS_GOT16, mips_gp_register);
macro_build (NULL, "nop", "");
load_delay_nop ();
relax_start (ep->X_add_symbol);
relax_switch ();
macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, reg,
@@ -4001,7 +4008,7 @@ load_address (int reg, expressionS *ep, int *used_at)
}
macro_build (ep, ADDRESS_LOAD_INSN, "t,o(b)", reg,
BFD_RELOC_MIPS_GOT16, mips_gp_register);
macro_build (NULL, "nop", "");
load_delay_nop ();
macro_build (ep, ADDRESS_ADDI_INSN, "t,r,j", reg, reg,
BFD_RELOC_LO16);
relax_end ();
@@ -5063,12 +5070,12 @@ macro (struct mips_cl_insn *ip)
/* We're going to put in an addu instruction using
tempreg, so we may as well insert the nop right
now. */
macro_build (NULL, "nop", "");
load_delay_nop ();
}
relax_switch ();
macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)",
tempreg, BFD_RELOC_MIPS_GOT16, mips_gp_register);
macro_build (NULL, "nop", "");
load_delay_nop ();
macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j",
tempreg, tempreg, BFD_RELOC_LO16);
relax_end ();
@@ -5080,7 +5087,7 @@ macro (struct mips_cl_insn *ip)
&& offset_expr.X_add_number < 0x8000)
{
load_got_offset (tempreg, &offset_expr);
macro_build (NULL, "nop", "");
load_delay_nop ();
add_got_offset (tempreg, &offset_expr);
}
else
@@ -5099,7 +5106,7 @@ macro (struct mips_cl_insn *ip)
not using a base register. */
if (breg == treg)
{
macro_build (NULL, "nop", "");
load_delay_nop ();
macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t",
treg, AT, breg);
breg = 0;
@@ -5282,13 +5289,13 @@ macro (struct mips_cl_insn *ip)
/* We're going to put in an addu instruction using
tempreg, so we may as well insert the nop right
now. */
macro_build (NULL, "nop", "");
load_delay_nop ();
}
}
else if (expr1.X_add_number >= -0x8000
&& expr1.X_add_number < 0x8000)
{
macro_build (NULL, "nop", "");
load_delay_nop ();
macro_build (&expr1, ADDRESS_ADDI_INSN, "t,r,j",
tempreg, tempreg, BFD_RELOC_LO16);
}
@@ -5308,7 +5315,7 @@ macro (struct mips_cl_insn *ip)
else
{
assert (tempreg == AT);
macro_build (NULL, "nop", "");
load_delay_nop ();
macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t",
treg, AT, breg);
dreg = treg;
@@ -5335,7 +5342,7 @@ macro (struct mips_cl_insn *ip)
if (expr1.X_add_number >= -0x8000
&& expr1.X_add_number < 0x8000)
{
macro_build (NULL, "nop", "");
load_delay_nop ();
macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j",
tempreg, tempreg, BFD_RELOC_LO16);
/* FIXME: If add_number is 0, and there was no base
@@ -5351,7 +5358,7 @@ macro (struct mips_cl_insn *ip)
/* We must add in the base register now, as in the
external symbol case. */
assert (tempreg == AT);
macro_build (NULL, "nop", "");
load_delay_nop ();
macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t",
treg, AT, breg);
tempreg = treg;
@@ -5637,7 +5644,7 @@ macro (struct mips_cl_insn *ip)
macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)",
PIC_CALL_REG, BFD_RELOC_MIPS_CALL16,
mips_gp_register);
macro_build (NULL, "nop", "");
load_delay_nop ();
relax_switch ();
}
else
@@ -5652,7 +5659,7 @@ macro (struct mips_cl_insn *ip)
macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)",
PIC_CALL_REG, BFD_RELOC_MIPS_CALL_LO16,
PIC_CALL_REG);
macro_build (NULL, "nop", "");
load_delay_nop ();
relax_switch ();
if (gpdelay)
macro_build (NULL, "nop", "");
@@ -5660,7 +5667,7 @@ macro (struct mips_cl_insn *ip)
macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)",
PIC_CALL_REG, BFD_RELOC_MIPS_GOT16,
mips_gp_register);
macro_build (NULL, "nop", "");
load_delay_nop ();
macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j",
PIC_CALL_REG, PIC_CALL_REG, BFD_RELOC_LO16);
relax_end ();
@@ -6160,7 +6167,7 @@ macro (struct mips_cl_insn *ip)
as_bad (_("PIC code offset overflow (max 16 signed bits)"));
macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg,
lw_reloc_type, mips_gp_register);
macro_build (NULL, "nop", "");
load_delay_nop ();
relax_start (offset_expr.X_add_symbol);
relax_switch ();
macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", tempreg,
@@ -6210,7 +6217,7 @@ macro (struct mips_cl_insn *ip)
macro_build (NULL, "nop", "");
macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", tempreg,
BFD_RELOC_MIPS_GOT16, mips_gp_register);
macro_build (NULL, "nop", "");
load_delay_nop ();
macro_build (&offset_expr, ADDRESS_ADDI_INSN, "t,r,j", tempreg,
tempreg, BFD_RELOC_LO16);
relax_end ();
@@ -6685,7 +6692,7 @@ macro (struct mips_cl_insn *ip)
|| expr1.X_add_number >= 0x8000 - 4)
as_bad (_("PIC code offset overflow (max 16 signed bits)"));
load_got_offset (AT, &offset_expr);
macro_build (NULL, "nop", "");
load_delay_nop ();
if (breg != 0)
macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT);
@@ -6744,7 +6751,7 @@ macro (struct mips_cl_insn *ip)
AT, AT, mips_gp_register);
macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)",
AT, BFD_RELOC_MIPS_GOT_LO16, AT);
macro_build (NULL, "nop", "");
load_delay_nop ();
if (breg != 0)
macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT);
/* Itbl support may require additional care here. */
@@ -6768,7 +6775,7 @@ macro (struct mips_cl_insn *ip)
macro_build (NULL, "nop", "");
macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", AT,
BFD_RELOC_MIPS_GOT16, mips_gp_register);
macro_build (NULL, "nop", "");
load_delay_nop ();
if (breg != 0)
macro_build (NULL, ADDRESS_ADD_INSN, "d,v,t", AT, breg, AT);
/* Itbl support may require additional care here. */