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-rw-r--r--gnu/usr.bin/gcc/config/m68k/m68k.h23
-rw-r--r--gnu/usr.bin/gcc/config/m68k/m68k.md40
2 files changed, 41 insertions, 22 deletions
diff --git a/gnu/usr.bin/gcc/config/m68k/m68k.h b/gnu/usr.bin/gcc/config/m68k/m68k.h
index 76d85d85e57..296fa0f8c75 100644
--- a/gnu/usr.bin/gcc/config/m68k/m68k.h
+++ b/gnu/usr.bin/gcc/config/m68k/m68k.h
@@ -90,9 +90,17 @@ extern int target_flags;
run on a 68030 and 68881/2. */
#define TARGET_68040 (target_flags & 01400)
-/* Use the 68040-only fp instructions (-m68040). */
+/* Use the 68040-only fp instructions (-m68040 or -m68060). */
#define TARGET_68040_ONLY (target_flags & 01000)
+/* Optimize for 68060, but still allow execution on 68020
+ (-m68060).
+ The 68060 will execute all 68030 and 68881/2 instructions, but some
+ of them must be emulated in software by the OS. When TARGET_68060 is
+ turned on, these instructions won't be used. This code will still
+ run on a 68030 and 68881/2. */
+#define TARGET_68060 (target_flags & 02000)
+
/* Macro to define tables used to set the flags.
This is a list in braces of pairs in braces,
each pair being { "NAME", VALUE }
@@ -100,15 +108,15 @@ extern int target_flags;
An empty string NAME is used to identify the default VALUE. */
#define TARGET_SWITCHES \
- { { "68020", -01400}, \
- { "c68020", -01400}, \
+ { { "68020", -03400}, \
+ { "c68020", -03400}, \
{ "68020", 5}, \
{ "c68020", 5}, \
{ "68881", 2}, \
{ "bitfield", 4}, \
- { "68000", -01405}, \
- { "c68000", -01405}, \
- { "soft-float", -01102}, \
+ { "68000", -03405}, \
+ { "c68000", -03405}, \
+ { "soft-float", -03102}, \
{ "nobitfield", -4}, \
{ "rtd", 8}, \
{ "nortd", -8}, \
@@ -119,9 +127,10 @@ extern int target_flags;
{ "sky", 0200}, \
{ "nosky", -0200}, \
{ "68020-40", 0407}, \
- { "68030", -01400}, \
+ { "68030", -03400}, \
{ "68030", 5}, \
{ "68040", 01007}, \
+ { "68060", 03007}, \
{ "68851", 0}, /* Affects *_SPEC and/or GAS. */ \
{ "no-68851", 0}, /* Affects *_SPEC and/or GAS. */ \
{ "68302", 0}, /* Affects *_SPEC and/or GAS. */ \
diff --git a/gnu/usr.bin/gcc/config/m68k/m68k.md b/gnu/usr.bin/gcc/config/m68k/m68k.md
index d73c0886c94..00175e7c2d9 100644
--- a/gnu/usr.bin/gcc/config/m68k/m68k.md
+++ b/gnu/usr.bin/gcc/config/m68k/m68k.md
@@ -92,6 +92,16 @@
;;- into play by defining "%$" and "%&" to expand to "s" and "d" rather
;;- than "".
+;;- Information about 68060 port.
+
+;;- The 68060 executes all 68030 and 68881/2 instructions, but some must
+;;- be emulated in software by the OS. It is faster to avoid these
+;;- instructions and issue a library call rather than trapping into
+;;- the kernel. The affected instructions are: divs.l <ea>,Dr:Dq;
+;;- divu.l <ea>,Dr:Dq; muls.l <ea>,Dr:Dq; mulu.l <ea>,Dr:Dq, fintrz;
+;;- and fscale. The TARGET_68060 flag turns the use of the opcodes
+;;- off.
+
;;- FPA port explanation:
@@ -1906,7 +1916,7 @@
(define_insn "ftruncdf2"
[(set (match_operand:DF 0 "general_operand" "=f")
(fix:DF (match_operand:DF 1 "general_operand" "fFm")))]
- "TARGET_68881 && !TARGET_68040"
+ "TARGET_68881 && !TARGET_68040 && !TARGET_68060"
"*
{
if (FP_REG_P (operands[1]))
@@ -1917,7 +1927,7 @@
(define_insn "ftruncsf2"
[(set (match_operand:SF 0 "general_operand" "=f")
(fix:SF (match_operand:SF 1 "general_operand" "dfFm")))]
- "TARGET_68881 && !TARGET_68040"
+ "TARGET_68881 && !TARGET_68040 && !TARGET_68060"
"*
{
if (FP_REG_P (operands[1]))
@@ -2939,7 +2949,7 @@
(truncate:SI (lshiftrt:DI (mult:DI (zero_extend:DI (match_dup 1))
(zero_extend:DI (match_dup 2)))
(const_int 32))))])]
- "TARGET_68020"
+ "TARGET_68020 && !TARGET_68060"
"")
(define_insn ""
@@ -2950,7 +2960,7 @@
(truncate:SI (lshiftrt:DI (mult:DI (zero_extend:DI (match_dup 1))
(zero_extend:DI (match_dup 2)))
(const_int 32))))]
- "TARGET_68020"
+ "TARGET_68020 && !TARGET_68060"
"mulu%.l %2,%3:%0")
; Match immediate case. For 2.4 only match things < 2^31.
@@ -2965,7 +2975,7 @@
(truncate:SI (lshiftrt:DI (mult:DI (zero_extend:DI (match_dup 1))
(match_dup 2))
(const_int 32))))]
- "TARGET_68020
+ "TARGET_68020 && !TARGET_68060
&& (unsigned) INTVAL (operands[2]) <= 0x7fffffff"
"mulu%.l %2,%3:%0")
@@ -2978,7 +2988,7 @@
(truncate:SI (lshiftrt:DI (mult:DI (sign_extend:DI (match_dup 1))
(sign_extend:DI (match_dup 2)))
(const_int 32))))])]
- "TARGET_68020"
+ "TARGET_68020 && !TARGET_68060"
"")
(define_insn ""
@@ -2989,7 +2999,7 @@
(truncate:SI (lshiftrt:DI (mult:DI (sign_extend:DI (match_dup 1))
(sign_extend:DI (match_dup 2)))
(const_int 32))))]
- "TARGET_68020"
+ "TARGET_68020 && !TARGET_68060"
"muls%.l %2,%3:%0")
(define_insn ""
@@ -3000,7 +3010,7 @@
(truncate:SI (lshiftrt:DI (mult:DI (sign_extend:DI (match_dup 1))
(match_dup 2))
(const_int 32))))]
- "TARGET_68020
+ "TARGET_68020 && !TARGET_68060
/* This test is a noop on 32 bit machines,
but important for a cross-compiler hosted on 64-bit machines. */
&& INTVAL (operands[2]) <= 0x7fffffff
@@ -3016,7 +3026,7 @@
(zero_extend:DI (match_operand:SI 2 "general_operand" "")))
(const_int 32))))
(clobber (match_dup 3))])]
- "TARGET_68020"
+ "TARGET_68020 && !TARGET_68060"
"
{
operands[3] = gen_reg_rtx (SImode);
@@ -3040,7 +3050,7 @@
(zero_extend:DI (match_operand:SI 3 "nonimmediate_operand" "dm")))
(const_int 32))))
(clobber (match_operand:SI 1 "register_operand" "=d"))]
- "TARGET_68020"
+ "TARGET_68020 && !TARGET_68060"
"mulu%.l %3,%0:%1")
(define_insn "const_umulsi3_highpart"
@@ -3051,7 +3061,7 @@
(match_operand 3 "const_uint32_operand" ""))
(const_int 32))))
(clobber (match_operand:SI 1 "register_operand" "=d"))]
- "TARGET_68020"
+ "TARGET_68020 && !TARGET_68060"
"mulu%.l %3,%0:%1")
(define_expand "smulsi3_highpart"
@@ -3063,7 +3073,7 @@
(sign_extend:DI (match_operand:SI 2 "general_operand" "")))
(const_int 32))))
(clobber (match_dup 3))])]
- "TARGET_68020"
+ "TARGET_68020 && !TARGET_68060"
"
{
operands[3] = gen_reg_rtx (SImode);
@@ -3087,7 +3097,7 @@
(sign_extend:DI (match_operand:SI 3 "nonimmediate_operand" "dm")))
(const_int 32))))
(clobber (match_operand:SI 1 "register_operand" "=d"))]
- "TARGET_68020"
+ "TARGET_68020 && !TARGET_68060"
"muls%.l %3,%0:%1")
(define_insn "const_smulsi3_highpart"
@@ -3098,7 +3108,7 @@
(match_operand 3 "const_sint32_operand" ""))
(const_int 32))))
(clobber (match_operand:SI 1 "register_operand" "=d"))]
- "TARGET_68020"
+ "TARGET_68020 && !TARGET_68060"
"muls%.l %3,%0:%1")
(define_expand "muldf3"
@@ -3155,7 +3165,7 @@
"*
{
if (GET_CODE (operands[2]) == CONST_DOUBLE
- && floating_exact_log2 (operands[2]) && !TARGET_68040)
+ && floating_exact_log2 (operands[2]) && !TARGET_68040 && !TARGET_68060)
{
int i = floating_exact_log2 (operands[2]);
operands[2] = gen_rtx (CONST_INT, VOIDmode, i);
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-25 08:35:20 +0000