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* config/tc-mips.c (load_address): When calling frag_grow, allow
for the (up to) two nops which may be inserted by append_insn if mips_optimize is 0. (macro): Likewise.
This commit is contained in:
Ian Lance Taylor
parent
7f0638d54b
commit
8ea7f4e854
@ -1,3 +1,10 @@
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Mon Mar 7 16:08:25 1994 Ian Lance Taylor (ian@tweedledumb.cygnus.com)
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* config/tc-mips.c (load_address): When calling frag_grow, allow
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for the (up to) two nops which may be inserted by append_insn if
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mips_optimize is 0.
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(macro): Likewise.
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Thu Mar 3 11:37:55 1994 Doug Evans (dje@canuck.cygnus.com)
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* config/atof-ieee.c (make_invalid_floating_point_number):
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@ -107,6 +107,10 @@ static int file_mips_isa;
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SVR4 ABI PIC calls. 1 doesn't mean anything. */
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static int mips_pic;
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/* 1 if trap instructions should used for overflow rather than break
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instructions. */
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static int mips_trap;
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static int mips_warn_about_macros;
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static int mips_noreorder;
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static int mips_any_noreorder;
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@ -479,6 +483,9 @@ md_begin ()
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mips_isa = 1;
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}
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if (mips_isa < 2 && mips_trap)
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as_bad ("trap exception not supported at ISA 1");
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switch (mips_isa)
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{
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case 1:
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@ -1564,7 +1571,7 @@ load_address (counter, reg, ep)
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p = NULL;
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else
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{
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frag_grow (12);
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frag_grow (20);
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macro_build ((char *) NULL, counter, ep,
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mips_isa < 3 ? "addiu" : "daddiu",
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"t,r,j", reg, GP, (int) BFD_RELOC_MIPS_GPREL);
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@ -1592,7 +1599,7 @@ load_address (counter, reg, ep)
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If there is a constant, it must be added in afterward. */
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ex.X_add_number = ep->X_add_number;
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ep->X_add_number = 0;
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frag_grow (12);
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frag_grow (20);
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macro_build ((char *) NULL, counter, ep,
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mips_isa < 3 ? "lw" : "ld",
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"t,o(b)", reg, (int) BFD_RELOC_MIPS_GOT16, GP);
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@ -2121,7 +2128,10 @@ macro (ip)
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if (treg == 0)
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{
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as_warn ("Divide by zero.");
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macro_build ((char *) NULL, &icnt, NULL, "break", "c", 7);
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if (mips_trap)
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macro_build ((char *) NULL, &icnt, NULL, "teq", "s,t", 0, 0);
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else
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macro_build ((char *) NULL, &icnt, NULL, "break", "c", 7);
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return;
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}
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@ -2131,15 +2141,20 @@ macro (ip)
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macro_build ((char *) NULL, &icnt, NULL,
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dbl ? "ddiv" : "div",
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"z,s,t", sreg, treg);
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expr1.X_add_number = 8;
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macro_build ((char *) NULL, &icnt, &expr1, "bne", "s,t,p", treg, 0);
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macro_build ((char *) NULL, &icnt, NULL, "nop", "", 0);
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macro_build ((char *) NULL, &icnt, NULL, "break", "c", 7);
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if (mips_trap)
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macro_build ((char *) NULL, &icnt, NULL, "teq", "s,t", treg, 0);
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else
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{
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expr1.X_add_number = 8;
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macro_build ((char *) NULL, &icnt, &expr1, "bne", "s,t,p", treg, 0);
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macro_build ((char *) NULL, &icnt, NULL, "nop", "", 0);
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macro_build ((char *) NULL, &icnt, NULL, "break", "c", 7);
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}
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expr1.X_add_number = -1;
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macro_build ((char *) NULL, &icnt, &expr1,
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dbl ? "daddiu" : "addiu",
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"t,r,j", AT, 0, (int) BFD_RELOC_LO16);
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expr1.X_add_number = dbl ? 20 : 16;
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expr1.X_add_number = mips_trap ? (dbl ? 12 : 8) : (dbl ? 20 : 16);
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macro_build ((char *) NULL, &icnt, &expr1, "bne", "s,t,p", treg, AT);
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if (dbl)
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{
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@ -2154,10 +2169,15 @@ macro (ip)
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expr1.X_add_number = 0x80000000;
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macro_build ((char *) NULL, &icnt, &expr1, "lui", "t,u", AT);
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}
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expr1.X_add_number = 8;
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macro_build ((char *) NULL, &icnt, &expr1, "bne", "s,t,p", sreg, AT);
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macro_build ((char *) NULL, &icnt, NULL, "nop", "", 0);
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macro_build ((char *) NULL, &icnt, NULL, "break", "c", 6);
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if (mips_trap)
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macro_build ((char *) NULL, &icnt, NULL, "teq", "s,t", sreg, AT);
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else
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{
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expr1.X_add_number = 8;
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macro_build ((char *) NULL, &icnt, &expr1, "bne", "s,t,p", sreg, AT);
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macro_build ((char *) NULL, &icnt, NULL, "nop", "", 0);
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macro_build ((char *) NULL, &icnt, NULL, "break", "c", 6);
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}
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--mips_noreorder;
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macro_build ((char *) NULL, &icnt, NULL, s, "d", dreg);
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break;
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@ -2201,7 +2221,10 @@ macro (ip)
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if (imm_expr.X_add_number == 0)
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{
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as_warn ("Divide by zero.");
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macro_build ((char *) NULL, &icnt, NULL, "break", "c", 7);
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if (mips_trap)
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macro_build ((char *) NULL, &icnt, NULL, "teq", "s,t", 0, 0);
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else
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macro_build ((char *) NULL, &icnt, NULL, "break", "c", 7);
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return;
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}
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if (imm_expr.X_add_number == 1)
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@ -2255,10 +2278,15 @@ macro (ip)
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++mips_noreorder;
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mips_any_noreorder = 1;
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macro_build ((char *) NULL, &icnt, NULL, s, "z,s,t", sreg, treg);
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expr1.X_add_number = 8;
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macro_build ((char *) NULL, &icnt, &expr1, "bne", "s,t,p", treg, 0);
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macro_build ((char *) NULL, &icnt, NULL, "nop", "", 0);
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macro_build ((char *) NULL, &icnt, NULL, "break", "c", 7);
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if (mips_trap)
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macro_build ((char *) NULL, &icnt, NULL, "teq", "s,t", treg, 0);
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else
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{
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expr1.X_add_number = 8;
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macro_build ((char *) NULL, &icnt, &expr1, "bne", "s,t,p", treg, 0);
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macro_build ((char *) NULL, &icnt, NULL, "nop", "", 0);
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macro_build ((char *) NULL, &icnt, NULL, "break", "c", 7);
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}
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--mips_noreorder;
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macro_build ((char *) NULL, &icnt, NULL, s2, "d", dreg);
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return;
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@ -2299,7 +2327,7 @@ macro (ip)
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p = NULL;
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else
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{
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frag_grow (12);
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frag_grow (20);
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macro_build ((char *) NULL, &icnt, &offset_expr,
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mips_isa < 3 ? "addiu" : "daddiu",
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"t,r,j", tempreg, GP, (int) BFD_RELOC_MIPS_GPREL);
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@ -2346,7 +2374,7 @@ macro (ip)
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addiu instruction. */
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expr1.X_add_number = offset_expr.X_add_number;
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offset_expr.X_add_number = 0;
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frag_grow (24);
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frag_grow (32);
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macro_build ((char *) NULL, &icnt, &offset_expr,
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mips_isa < 3 ? "lw" : "ld",
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"t,o(b)", tempreg, (int) BFD_RELOC_MIPS_GOT16, GP);
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@ -2515,7 +2543,7 @@ macro (ip)
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nop
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lw $gp,cprestore($sp)
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*/
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frag_grow (12);
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frag_grow (20);
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macro_build ((char *) NULL, &icnt, &offset_expr,
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mips_isa < 3 ? "lw" : "ld",
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"t,o(b)", PIC_CALL_REG, (int) BFD_RELOC_MIPS_CALL16, GP);
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@ -2724,7 +2752,7 @@ macro (ip)
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p = NULL;
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else
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{
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frag_grow (12);
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frag_grow (20);
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macro_build ((char *) NULL, &icnt, &offset_expr, s, fmt,
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treg, (int) BFD_RELOC_MIPS_GPREL, GP);
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p = frag_var (rs_machine_dependent, 8, 0,
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@ -2747,7 +2775,7 @@ macro (ip)
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p = NULL;
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else
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{
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frag_grow (20);
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frag_grow (28);
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macro_build ((char *) NULL, &icnt, (expressionS *) NULL,
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mips_isa < 3 ? "addu" : "daddu",
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"d,v,t", tempreg, breg, GP);
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@ -2793,7 +2821,7 @@ macro (ip)
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if (expr1.X_add_number < -0x8000
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|| expr1.X_add_number >= 0x8000)
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as_bad ("PIC code offset overflow (max 16 signed bits)");
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frag_grow (12);
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frag_grow (20);
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macro_build ((char *) NULL, &icnt, &offset_expr,
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mips_isa < 3 ? "lw" : "ld",
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"t,o(b)", tempreg, (int) BFD_RELOC_MIPS_GOT16, GP);
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@ -3028,14 +3056,14 @@ macro (ip)
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if (breg == 0)
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{
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frag_grow (20);
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frag_grow (28);
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tempreg = GP;
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off = 0;
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used_at = 0;
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}
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else
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{
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frag_grow (28);
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frag_grow (36);
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macro_build ((char *) NULL, &icnt, (expressionS *) NULL,
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mips_isa < 3 ? "addu" : "daddu",
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"d,v,t", AT, breg, GP);
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@ -3117,7 +3145,7 @@ macro (ip)
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off = 0;
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else
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off = 4;
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frag_grow (16 + off);
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frag_grow (24 + off);
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macro_build ((char *) NULL, &icnt, &offset_expr,
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mips_isa < 3 ? "lw" : "ld",
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"t,o(b)", AT, (int) BFD_RELOC_MIPS_GOT16, GP);
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@ -3236,10 +3264,15 @@ macro2 (ip)
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dbl ? "dsra32" : "sra",
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"d,w,<", dreg, dreg, 31);
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macro_build ((char *) NULL, &icnt, NULL, "mfhi", "d", AT);
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expr1.X_add_number = 8;
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macro_build ((char *) NULL, &icnt, &expr1, "beq", "s,t,p", dreg, AT);
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macro_build ((char *) NULL, &icnt, NULL, "nop", "", 0);
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macro_build ((char *) NULL, &icnt, NULL, "break", "c", 6);
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if (mips_trap)
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macro_build ((char *) NULL, &icnt, NULL, "tne", "s,t", dreg, AT);
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else
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{
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expr1.X_add_number = 8;
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macro_build ((char *) NULL, &icnt, &expr1, "beq", "s,t,p", dreg, AT);
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macro_build ((char *) NULL, &icnt, NULL, "nop", "", 0);
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macro_build ((char *) NULL, &icnt, NULL, "break", "c", 6);
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}
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--mips_noreorder;
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macro_build ((char *) NULL, &icnt, NULL, "mflo", "d", dreg);
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break;
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@ -3255,10 +3288,15 @@ macro2 (ip)
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"s,t", sreg, treg);
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macro_build ((char *) NULL, &icnt, NULL, "mfhi", "d", AT);
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macro_build ((char *) NULL, &icnt, NULL, "mflo", "d", dreg);
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expr1.X_add_number = 8;
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macro_build ((char *) NULL, &icnt, &expr1, "beq", "s,t,p", AT, 0);
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macro_build ((char *) NULL, &icnt, NULL, "nop", "", 0);
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macro_build ((char *) NULL, &icnt, NULL, "break", "c", 6);
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if (mips_trap)
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macro_build ((char *) NULL, &icnt, NULL, "tne", "s,t", AT, 0);
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else
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{
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expr1.X_add_number = 8;
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macro_build ((char *) NULL, &icnt, &expr1, "beq", "s,t,p", AT, 0);
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macro_build ((char *) NULL, &icnt, NULL, "nop", "", 0);
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macro_build ((char *) NULL, &icnt, NULL, "break", "c", 6);
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}
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--mips_noreorder;
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break;
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@ -3615,11 +3653,17 @@ macro2 (ip)
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case M_ULHU:
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s = "lbu";
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ulh:
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if (offset_expr.X_add_number >= 0x7fff)
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as_bad ("operand overflow");
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/* avoid load delay */
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offset_expr.X_add_number += 1;
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if (byte_order == LITTLE_ENDIAN)
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offset_expr.X_add_number += 1;
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macro_build ((char *) NULL, &icnt, &offset_expr, s, "t,o(b)", treg,
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(int) BFD_RELOC_LO16, breg);
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offset_expr.X_add_number -= 1;
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if (byte_order == LITTLE_ENDIAN)
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offset_expr.X_add_number -= 1;
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else
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offset_expr.X_add_number += 1;
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macro_build ((char *) NULL, &icnt, &offset_expr, "lbu", "t,o(b)", AT,
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(int) BFD_RELOC_LO16, breg);
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macro_build ((char *) NULL, &icnt, NULL, "sll", "d,w,<", treg, treg, 8);
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@ -3627,11 +3671,16 @@ macro2 (ip)
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break;
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case M_ULW:
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/* does this work on a big endian machine? */
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offset_expr.X_add_number += 3;
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if (offset_expr.X_add_number >= 0x7ffd)
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as_bad ("operand overflow");
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if (byte_order == LITTLE_ENDIAN)
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offset_expr.X_add_number += 3;
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macro_build ((char *) NULL, &icnt, &offset_expr, "lwl", "t,o(b)", treg,
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(int) BFD_RELOC_LO16, breg);
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offset_expr.X_add_number -= 3;
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if (byte_order == LITTLE_ENDIAN)
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offset_expr.X_add_number -= 3;
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else
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offset_expr.X_add_number += 3;
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macro_build ((char *) NULL, &icnt, &offset_expr, "lwr", "t,o(b)", treg,
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(int) BFD_RELOC_LO16, breg);
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return;
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@ -3642,19 +3691,30 @@ macro2 (ip)
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load_address (&icnt, AT, &offset_expr);
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if (mask == M_ULW_A)
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{
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expr1.X_add_number = 3;
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if (byte_order == LITTLE_ENDIAN)
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expr1.X_add_number = 3;
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else
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expr1.X_add_number = 0;
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macro_build ((char *) NULL, &icnt, &expr1, "lwl", "t,o(b)", treg,
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(int) BFD_RELOC_LO16, AT);
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expr1.X_add_number = 0;
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if (byte_order == LITTLE_ENDIAN)
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expr1.X_add_number = 0;
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else
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expr1.X_add_number = 3;
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macro_build ((char *) NULL, &icnt, &expr1, "lwr", "t,o(b)", treg,
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(int) BFD_RELOC_LO16, AT);
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}
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else
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{
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if (byte_order == BIG_ENDIAN)
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expr1.X_add_number = 0;
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macro_build ((char *) NULL, &icnt, &expr1,
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mask == M_ULH_A ? "lb" : "lbu", "t,o(b)", treg,
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(int) BFD_RELOC_LO16, AT);
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expr1.X_add_number = 0;
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if (byte_order == BIG_ENDIAN)
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expr1.X_add_number = 1;
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else
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expr1.X_add_number = 0;
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macro_build ((char *) NULL, &icnt, &expr1, "lbu", "t,o(b)", AT,
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(int) BFD_RELOC_LO16, AT);
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macro_build ((char *) NULL, &icnt, NULL, "sll", "d,w,<", treg,
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@ -3665,19 +3725,32 @@ macro2 (ip)
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break;
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case M_USH:
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if (offset_expr.X_add_number >= 0x7fff)
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as_bad ("operand overflow");
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if (byte_order == BIG_ENDIAN)
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offset_expr.X_add_number += 1;
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macro_build ((char *) NULL, &icnt, &offset_expr, "sb", "t,o(b)", treg,
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(int) BFD_RELOC_LO16, breg);
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macro_build ((char *) NULL, &icnt, NULL, "srl", "d,w,<", AT, treg, 8);
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offset_expr.X_add_number += 1;
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if (byte_order == BIG_ENDIAN)
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offset_expr.X_add_number -= 1;
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else
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offset_expr.X_add_number += 1;
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macro_build ((char *) NULL, &icnt, &offset_expr, "sb", "t,o(b)", AT,
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(int) BFD_RELOC_LO16, breg);
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break;
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case M_USW:
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offset_expr.X_add_number += 3;
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if (offset_expr.X_add_number >= 0x7ffd)
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as_bad ("operand overflow");
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if (byte_order == LITTLE_ENDIAN)
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offset_expr.X_add_number += 3;
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macro_build ((char *) NULL, &icnt, &offset_expr, "swl", "t,o(b)", treg,
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(int) BFD_RELOC_LO16, breg);
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offset_expr.X_add_number -= 3;
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if (byte_order == LITTLE_ENDIAN)
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offset_expr.X_add_number -= 3;
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else
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offset_expr.X_add_number += 3;
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macro_build ((char *) NULL, &icnt, &offset_expr, "swr", "t,o(b)", treg,
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(int) BFD_RELOC_LO16, breg);
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return;
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@ -3687,24 +3760,37 @@ macro2 (ip)
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load_address (&icnt, AT, &offset_expr);
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if (mask == M_USW_A)
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{
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expr1.X_add_number = 3;
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if (byte_order == LITTLE_ENDIAN)
|
||||
expr1.X_add_number = 3;
|
||||
else
|
||||
expr1.X_add_number = 0;
|
||||
macro_build ((char *) NULL, &icnt, &expr1, "swl", "t,o(b)", treg,
|
||||
(int) BFD_RELOC_LO16, AT);
|
||||
expr1.X_add_number = 0;
|
||||
if (byte_order == LITTLE_ENDIAN)
|
||||
expr1.X_add_number = 0;
|
||||
else
|
||||
expr1.X_add_number = 3;
|
||||
macro_build ((char *) NULL, &icnt, &expr1, "swr", "t,o(b)", treg,
|
||||
(int) BFD_RELOC_LO16, AT);
|
||||
}
|
||||
else
|
||||
{
|
||||
expr1.X_add_number = 0;
|
||||
if (byte_order == LITTLE_ENDIAN)
|
||||
expr1.X_add_number = 0;
|
||||
macro_build ((char *) NULL, &icnt, &expr1, "sb", "t,o(b)", treg,
|
||||
(int) BFD_RELOC_LO16, AT);
|
||||
macro_build ((char *) NULL, &icnt, NULL, "srl", "d,w,<", treg,
|
||||
treg, 8);
|
||||
expr1.X_add_number = 1;
|
||||
if (byte_order == LITTLE_ENDIAN)
|
||||
expr1.X_add_number = 1;
|
||||
else
|
||||
expr1.X_add_number = 0;
|
||||
macro_build ((char *) NULL, &icnt, &expr1, "sb", "t,o(b)", treg,
|
||||
(int) BFD_RELOC_LO16, AT);
|
||||
expr1.X_add_number = 0;
|
||||
if (byte_order == LITTLE_ENDIAN)
|
||||
expr1.X_add_number = 0;
|
||||
else
|
||||
expr1.X_add_number = 1;
|
||||
macro_build ((char *) NULL, &icnt, &expr1, "lbu", "t,o(b)", AT,
|
||||
(int) BFD_RELOC_LO16, AT);
|
||||
macro_build ((char *) NULL, &icnt, NULL, "sll", "d,w,<", treg,
|
||||
@ -4700,6 +4786,28 @@ md_parse_option (argP, cntP, vecP)
|
||||
return 1; /* pretend you parsed the character */
|
||||
}
|
||||
|
||||
/* Handle a long option name. */
|
||||
|
||||
int
|
||||
mips_parse_long_option (arg)
|
||||
const char *arg;
|
||||
{
|
||||
if (strcmp (arg, "--trap") == 0
|
||||
|| strcmp (arg, "--no-break") == 0)
|
||||
{
|
||||
mips_trap = 1;
|
||||
return 1;
|
||||
}
|
||||
else if (strcmp (arg, "--no-trap") == 0
|
||||
|| strcmp (arg, "--break") == 0)
|
||||
{
|
||||
mips_trap = 0;
|
||||
return 1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
long
|
||||
md_pcrel_from (fixP)
|
||||
fixS *fixP;
|
||||
@ -5082,13 +5190,10 @@ s_extern (x)
|
||||
if (*input_line_pointer == ',')
|
||||
input_line_pointer++;
|
||||
size = get_absolute_expression ();
|
||||
S_SET_VALUE (symbolP, size);
|
||||
S_SET_EXTERNAL (symbolP);
|
||||
|
||||
#ifdef ECOFF_DEBUGGING
|
||||
/* ECOFF needs to distinguish a .comm symbol from a .extern symbol,
|
||||
so we use an additional ECOFF specific field. */
|
||||
symbolP->ecoff_undefined = 1;
|
||||
symbolP->ecoff_extern_size = size;
|
||||
#endif
|
||||
}
|
||||
|
||||
@ -5480,8 +5585,10 @@ md_estimate_size_before_relax (fragp, segtype)
|
||||
|| strcmp (symname, "_gp_disp") == 0))
|
||||
change = 1;
|
||||
else if (! S_IS_DEFINED (fragp->fr_symbol)
|
||||
&& S_GET_VALUE (fragp->fr_symbol) != 0
|
||||
&& S_GET_VALUE (fragp->fr_symbol) <= g_switch_value)
|
||||
&& ((fragp->fr_symbol->ecoff_extern_size != 0
|
||||
&& fragp->fr_symbol->ecoff_extern_size <= g_switch_value)
|
||||
|| (S_GET_VALUE (fragp->fr_symbol) != 0
|
||||
&& S_GET_VALUE (fragp->fr_symbol) <= g_switch_value)))
|
||||
change = 0;
|
||||
else
|
||||
{
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user