target/*/cpu.h: remove softfloat.h

As cpu.h is another typically widely included file which doesn't need
full access to the softfloat API we can remove the includes from here
as well. Where they do need types it's typically for float_status and
the rounding modes so we move that to softfloat-types.h as well.

As a result of not having softfloat in every cpu.h call we now need to
add it to various helpers that do need the full softfloat.h
definitions.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
[For PPC parts]
Acked-by: David Gibson <david@gibson.dropbear.id.au>

include/fpu/softfloat-types.h

@@ -80,6 +80,12 @@ this code that are retained.
 #ifndef SOFTFLOAT_TYPES_H
 #define SOFTFLOAT_TYPES_H
 
+/* This 'flag' type must be able to hold at least 0 and 1. It should
+ * probably be replaced with 'bool' but the uses would need to be audited
+ * to check that they weren't accidentally relying on it being a larger type.
+ */
+typedef uint8_t flag;
+
 /*
  * Software IEC/IEEE floating-point types.
  */
@@ -112,4 +118,62 @@ typedef struct {
 #define make_float128(high_, low_) ((float128) { .high = high_, .low = low_ })
 #define make_float128_init(high_, low_) { .high = high_, .low = low_ }
 
+/*
+ * Software IEC/IEEE floating-point underflow tininess-detection mode.
+ */
+
+enum {
+    float_tininess_after_rounding  = 0,
+    float_tininess_before_rounding = 1
+};
+
+/*
+ *Software IEC/IEEE floating-point rounding mode.
+ */
+
+enum {
+    float_round_nearest_even = 0,
+    float_round_down         = 1,
+    float_round_up           = 2,
+    float_round_to_zero      = 3,
+    float_round_ties_away    = 4,
+    /* Not an IEEE rounding mode: round to the closest odd mantissa value */
+    float_round_to_odd       = 5,
+};
+
+/*
+ * Software IEC/IEEE floating-point exception flags.
+ */
+
+enum {
+    float_flag_invalid   =  1,
+    float_flag_divbyzero =  4,
+    float_flag_overflow  =  8,
+    float_flag_underflow = 16,
+    float_flag_inexact   = 32,
+    float_flag_input_denormal = 64,
+    float_flag_output_denormal = 128
+};
+
+
+/*
+ * Floating Point Status. Individual architectures may maintain
+ * several versions of float_status for different functions. The
+ * correct status for the operation is then passed by reference to
+ * most of the softfloat functions.
+ */
+
+typedef struct float_status {
+    signed char float_detect_tininess;
+    signed char float_rounding_mode;
+    uint8_t     float_exception_flags;
+    signed char floatx80_rounding_precision;
+    /* should denormalised results go to zero and set the inexact flag? */
+    flag flush_to_zero;
+    /* should denormalised inputs go to zero and set the input_denormal flag? */
+    flag flush_inputs_to_zero;
+    flag default_nan_mode;
+    flag snan_bit_is_one;
+} float_status;
+
 #endif /* SOFTFLOAT_TYPES_H */

include/fpu/softfloat.h

@@ -82,12 +82,6 @@ this code that are retained.
 #ifndef SOFTFLOAT_H
 #define SOFTFLOAT_H
 
-/* This 'flag' type must be able to hold at least 0 and 1. It should
- * probably be replaced with 'bool' but the uses would need to be audited
- * to check that they weren't accidentally relying on it being a larger type.
- */
-typedef uint8_t flag;
-
 #define LIT64( a ) a##LL
 
 /*----------------------------------------------------------------------------
@@ -102,53 +96,6 @@ enum {
 
 #include "fpu/softfloat-types.h"
 
-/*----------------------------------------------------------------------------
-| Software IEC/IEEE floating-point underflow tininess-detection mode.
-*----------------------------------------------------------------------------*/
-enum {
-    float_tininess_after_rounding  = 0,
-    float_tininess_before_rounding = 1
-};
-
-/*----------------------------------------------------------------------------
-| Software IEC/IEEE floating-point rounding mode.
-*----------------------------------------------------------------------------*/
-enum {
-    float_round_nearest_even = 0,
-    float_round_down         = 1,
-    float_round_up           = 2,
-    float_round_to_zero      = 3,
-    float_round_ties_away    = 4,
-    /* Not an IEEE rounding mode: round to the closest odd mantissa value */
-    float_round_to_odd       = 5,
-};
-
-/*----------------------------------------------------------------------------
-| Software IEC/IEEE floating-point exception flags.
-*----------------------------------------------------------------------------*/
-enum {
-    float_flag_invalid   =  1,
-    float_flag_divbyzero =  4,
-    float_flag_overflow  =  8,
-    float_flag_underflow = 16,
-    float_flag_inexact   = 32,
-    float_flag_input_denormal = 64,
-    float_flag_output_denormal = 128
-};
-
-typedef struct float_status {
-    signed char float_detect_tininess;
-    signed char float_rounding_mode;
-    uint8_t     float_exception_flags;
-    signed char floatx80_rounding_precision;
-    /* should denormalised results go to zero and set the inexact flag? */
-    flag flush_to_zero;
-    /* should denormalised inputs go to zero and set the input_denormal flag? */
-    flag flush_inputs_to_zero;
-    flag default_nan_mode;
-    flag snan_bit_is_one;
-} float_status;
-
 static inline void set_float_detect_tininess(int val, float_status *status)
 {
     status->float_detect_tininess = val;

target/alpha/cpu.h

@@ -33,8 +33,6 @@
 
 #include "exec/cpu-defs.h"
 
-#include "fpu/softfloat.h"
-
 #define ICACHE_LINE_SIZE 32
 #define DCACHE_LINE_SIZE 32
 

target/arm/cpu.c

@@ -34,6 +34,7 @@
 #include "sysemu/hw_accel.h"
 #include "kvm_arm.h"
 #include "disas/capstone.h"
+#include "fpu/softfloat.h"
 
 static void arm_cpu_set_pc(CPUState *cs, vaddr value)
 {

target/arm/cpu.h

@@ -39,8 +39,6 @@
 #include "cpu-qom.h"
 #include "exec/cpu-defs.h"
 
-#include "fpu/softfloat.h"
-
 #define EXCP_UDEF            1   /* undefined instruction */
 #define EXCP_SWI             2   /* software interrupt */
 #define EXCP_PREFETCH_ABORT  3

target/arm/helper-a64.c

@@ -31,6 +31,7 @@
 #include "exec/cpu_ldst.h"
 #include "qemu/int128.h"
 #include "tcg.h"
+#include "fpu/softfloat.h"
 #include <zlib.h> /* For crc32 */
 
 /* C2.4.7 Multiply and divide */

target/arm/helper.c

@@ -15,6 +15,7 @@
 #include <zlib.h> /* For crc32 */
 #include "exec/semihost.h"
 #include "sysemu/kvm.h"
+#include "fpu/softfloat.h"
 
 #define ARM_CPU_FREQ 1000000000 /* FIXME: 1 GHz, should be configurable */
 

target/arm/neon_helper.c

@@ -11,6 +11,7 @@
 #include "cpu.h"
 #include "exec/exec-all.h"
 #include "exec/helper-proto.h"
+#include "fpu/softfloat.h"
 
 #define SIGNBIT (uint32_t)0x80000000
 #define SIGNBIT64 ((uint64_t)1 << 63)

target/hppa/cpu.c

@@ -23,6 +23,7 @@
 #include "cpu.h"
 #include "qemu-common.h"
 #include "exec/exec-all.h"
+#include "fpu/softfloat.h"
 
 
 static void hppa_cpu_set_pc(CPUState *cs, vaddr value)

target/hppa/cpu.h

@@ -51,7 +51,6 @@
 #define CPUArchState struct CPUHPPAState
 
 #include "exec/cpu-defs.h"
-#include "fpu/softfloat.h"
 
 #define TARGET_PAGE_BITS 12
 

target/hppa/op_helper.c

@@ -24,7 +24,7 @@
 #include "exec/cpu_ldst.h"
 #include "sysemu/sysemu.h"
 #include "qemu/timer.h"
-
+#include "fpu/softfloat.h"
 
 void QEMU_NORETURN HELPER(excp)(CPUHPPAState *env, int excp)
 {

target/i386/cpu.h

@@ -52,10 +52,6 @@
 
 #define CPUArchState struct CPUX86State
 
-#ifdef CONFIG_TCG
-#include "fpu/softfloat.h"
-#endif
-
 enum {
     R_EAX = 0,
     R_ECX = 1,

target/i386/fpu_helper.c

@@ -24,6 +24,7 @@
 #include "qemu/host-utils.h"
 #include "exec/exec-all.h"
 #include "exec/cpu_ldst.h"
+#include "fpu/softfloat.h"
 
 #define FPU_RC_MASK         0xc00
 #define FPU_RC_NEAR         0x000

target/m68k/cpu.c

@@ -24,7 +24,7 @@
 #include "qemu-common.h"
 #include "migration/vmstate.h"
 #include "exec/exec-all.h"
-
+#include "fpu/softfloat.h"
 
 static void m68k_cpu_set_pc(CPUState *cs, vaddr value)
 {

target/m68k/cpu.h

@@ -28,7 +28,6 @@
 #include "qemu-common.h"
 #include "exec/cpu-defs.h"
 #include "cpu-qom.h"
-#include "fpu/softfloat.h"
 
 #define OS_BYTE     0
 #define OS_WORD     1

target/m68k/fpu_helper.c

@@ -23,6 +23,7 @@
 #include "exec/helper-proto.h"
 #include "exec/exec-all.h"
 #include "exec/cpu_ldst.h"
+#include "fpu/softfloat.h"
 
 /* Undefined offsets may be different on various FPU.
  * On 68040 they return 0.0 (floatx80_zero)

target/m68k/helper.c

@@ -24,6 +24,7 @@
 #include "exec/gdbstub.h"
 
 #include "exec/helper-proto.h"
+#include "fpu/softfloat.h"
 
 #define SIGNBIT (1u << 31)
 

target/m68k/translate.c

@@ -32,6 +32,8 @@
 
 #include "trace-tcg.h"
 #include "exec/log.h"
+#include "fpu/softfloat.h"
+
 
 //#define DEBUG_DISPATCH 1
 

target/microblaze/cpu.c

@@ -28,6 +28,7 @@
 #include "hw/qdev-properties.h"
 #include "migration/vmstate.h"
 #include "exec/exec-all.h"
+#include "fpu/softfloat.h"
 
 static const struct {
     const char *name;

target/microblaze/cpu.h

@@ -28,7 +28,7 @@
 #define CPUArchState struct CPUMBState
 
 #include "exec/cpu-defs.h"
-#include "fpu/softfloat.h"
+#include "fpu/softfloat-types.h"
 struct CPUMBState;
 typedef struct CPUMBState CPUMBState;
 #if !defined(CONFIG_USER_ONLY)