From: Ian Lance Taylor Date: Wed, 7 May 1997 19:41:17 +0000 (+0000) Subject: * config/tc-mips.c (macro): Handle constants for M_LI_D and X-Git-Tag: gdb-4_18~5568 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a5586bdc2fad7a2fcaa65702ada82102d2a65d78;p=platform%2Fupstream%2Fbinutils.git * config/tc-mips.c (macro): Handle constants for M_LI_D and M_LI_DD. (mips_ip): For 'F', 'L', 'f', and 'l', generate a constant rather than an address if the floating point value looks sufficiently simple. PR 12237. --- diff --git a/gas/ChangeLog b/gas/ChangeLog index 38add04..7e66d49 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -1,3 +1,11 @@ +Wed May 7 15:39:48 1997 Ian Lance Taylor + + * config/tc-mips.c (macro): Handle constants for M_LI_D and + M_LI_DD. + (mips_ip): For 'F', 'L', 'f', and 'l', generate a constant rather + than an address if the floating point value looks sufficiently + simple. + Tue May 6 12:18:09 1997 Ian Lance Taylor * config/tc-i386.c (md_section_align): If a.out and BFD, force diff --git a/gas/config/tc-mips.c b/gas/config/tc-mips.c index 8c7e24f..61623ae 100644 --- a/gas/config/tc-mips.c +++ b/gas/config/tc-mips.c @@ -4897,6 +4897,27 @@ macro (ip) } case M_LI_D: + /* If we have a constant in IMM_EXPR, then in mips3 mode it is + the entire value, and in mips1 mode it is the high order 32 + bits of the value and the low order 32 bits are either zero + or in offset_expr. */ + if (imm_expr.X_op == O_constant || imm_expr.X_op == O_big) + { + load_register (&icnt, treg, &imm_expr, mips_opts.isa >= 3); + if (mips_opts.isa < 3 && treg != 31) + { + if (offset_expr.X_op == O_absent) + macro_build ((char *) NULL, &icnt, NULL, "move", "d,s", + treg + 1, 0); + else + { + assert (offset_expr.X_op == O_constant); + load_register (&icnt, treg + 1, &offset_expr, 0); + } + } + return; + } + /* We know that sym is in the .rdata section. First we get the upper 16 bits of the address. */ if (mips_pic == NO_PIC) @@ -4949,6 +4970,34 @@ macro (ip) break; case M_LI_DD: + /* If we have a constant in IMM_EXPR, then in mips3 mode it is + the entire value, and in mips1 mode it is the high order 32 + bits of the value and the low order 32 bits are either zero + or in offset_expr. */ + if (imm_expr.X_op == O_constant || imm_expr.X_op == O_big) + { + load_register (&icnt, AT, &imm_expr, mips_opts.isa >= 3); + if (mips_opts.isa >= 3) + macro_build ((char *) NULL, &icnt, (expressionS *) NULL, + "dmtc1", "t,S", AT, treg); + else + { + macro_build ((char *) NULL, &icnt, (expressionS *) NULL, + "mtc1", "t,G", AT, treg + 1); + if (offset_expr.X_op == O_absent) + macro_build ((char *) NULL, &icnt, (expressionS *) NULL, + "mtc1", "t,G", 0, treg); + else + { + assert (offset_expr.X_op == O_constant); + load_register (&icnt, AT, &offset_expr, 0); + macro_build ((char *) NULL, &icnt, (expressionS *) NULL, + "mtc1", "t,G", AT, treg); + } + } + break; + } + assert (offset_expr.X_op == O_symbol && offset_expr.X_add_number == 0); s = segment_name (S_GET_SEGMENT (offset_expr.X_add_symbol)); @@ -6911,22 +6960,72 @@ mips_ip (str, ip) || (*args == 'l' && (! USE_GLOBAL_POINTER_OPT || mips_pic == EMBEDDED_PIC - || g_switch_value < 4) - )) + || g_switch_value < 4 + || (temp[0] == 0 && temp[1] == 0) + || (temp[2] == 0 && temp[3] == 0)))) { imm_expr.X_op = O_constant; if (! target_big_endian) - imm_expr.X_add_number = - (((((((int) temp[3] << 8) - | temp[2]) << 8) - | temp[1]) << 8) - | temp[0]); + imm_expr.X_add_number = bfd_getl32 (temp); else - imm_expr.X_add_number = - (((((((int) temp[0] << 8) - | temp[1]) << 8) - | temp[2]) << 8) - | temp[3]); + imm_expr.X_add_number = bfd_getb32 (temp); + } + else if (length > 4 + && ((temp[0] == 0 && temp[1] == 0) + || (temp[2] == 0 && temp[3] == 0)) + && ((temp[4] == 0 && temp[5] == 0) + || (temp[6] == 0 && temp[7] == 0))) + { + /* The value is simple enough to load with a + couple of instructions. In mips1 mode, set + imm_expr to the high order 32 bits and + offset_expr to the low order 32 bits. + Otherwise, set imm_expr to the entire 64 bit + constant. */ + if (mips_opts.isa < 3) + { + imm_expr.X_op = O_constant; + offset_expr.X_op = O_constant; + if (! target_big_endian) + { + imm_expr.X_add_number = bfd_getl32 (temp + 4); + offset_expr.X_add_number = bfd_getl32 (temp); + } + else + { + imm_expr.X_add_number = bfd_getb32 (temp); + offset_expr.X_add_number = bfd_getb32 (temp + 4); + } + if (offset_expr.X_add_number == 0) + offset_expr.X_op = O_absent; + } + else if (sizeof (imm_expr.X_add_number) > 4) + { + imm_expr.X_op = O_constant; + if (! target_big_endian) + imm_expr.X_add_number = bfd_getl64 (temp); + else + imm_expr.X_add_number = bfd_getb64 (temp); + } + else + { + imm_expr.X_op = O_big; + imm_expr.X_add_number = 4; + if (! target_big_endian) + { + generic_bignum[0] = bfd_getl16 (temp); + generic_bignum[1] = bfd_getl16 (temp + 2); + generic_bignum[2] = bfd_getl16 (temp + 4); + generic_bignum[3] = bfd_getl16 (temp + 6); + } + else + { + generic_bignum[0] = bfd_getb16 (temp + 6); + generic_bignum[1] = bfd_getb16 (temp + 4); + generic_bignum[2] = bfd_getb16 (temp + 2); + generic_bignum[3] = bfd_getb16 (temp); + } + } } else { @@ -9772,11 +9871,15 @@ nopic_need_relax (sym, before_relaxing) #ifndef NO_ECOFF_DEBUGGING || (sym->ecoff_extern_size != 0 && sym->ecoff_extern_size <= g_switch_value) +#endif /* We must defer this decision until after the whole file has been read, since there might be a .extern after the first use of this symbol. */ - || (sym->ecoff_extern_size == 0 && before_relaxing) + || (before_relaxing +#ifndef NO_ECOFF_DEBUGGING + && sym->ecoff_extern_size == 0 #endif + && S_GET_VALUE (sym) == 0) || (S_GET_VALUE (sym) != 0 && S_GET_VALUE (sym) <= g_switch_value))) change = 0;