mirror of
https://github.com/xemu-project/xemu.git
synced 2024-11-28 14:00:44 +00:00
24f91e81b6
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>
283 lines
12 KiB
C
283 lines
12 KiB
C
/*
|
|
* OpenRISC float helper routines
|
|
*
|
|
* Copyright (c) 2011-2012 Jia Liu <proljc@gmail.com>
|
|
* Feng Gao <gf91597@gmail.com>
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "cpu.h"
|
|
#include "exec/helper-proto.h"
|
|
#include "exception.h"
|
|
#include "fpu/softfloat.h"
|
|
|
|
static inline uint32_t ieee_ex_to_openrisc(OpenRISCCPU *cpu, int fexcp)
|
|
{
|
|
int ret = 0;
|
|
if (fexcp) {
|
|
if (fexcp & float_flag_invalid) {
|
|
cpu->env.fpcsr |= FPCSR_IVF;
|
|
ret = 1;
|
|
}
|
|
if (fexcp & float_flag_overflow) {
|
|
cpu->env.fpcsr |= FPCSR_OVF;
|
|
ret = 1;
|
|
}
|
|
if (fexcp & float_flag_underflow) {
|
|
cpu->env.fpcsr |= FPCSR_UNF;
|
|
ret = 1;
|
|
}
|
|
if (fexcp & float_flag_divbyzero) {
|
|
cpu->env.fpcsr |= FPCSR_DZF;
|
|
ret = 1;
|
|
}
|
|
if (fexcp & float_flag_inexact) {
|
|
cpu->env.fpcsr |= FPCSR_IXF;
|
|
ret = 1;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static inline void update_fpcsr(OpenRISCCPU *cpu)
|
|
{
|
|
int tmp = ieee_ex_to_openrisc(cpu,
|
|
get_float_exception_flags(&cpu->env.fp_status));
|
|
|
|
SET_FP_CAUSE(cpu->env.fpcsr, tmp);
|
|
if ((GET_FP_ENABLE(cpu->env.fpcsr) & tmp) &&
|
|
(cpu->env.fpcsr & FPCSR_FPEE)) {
|
|
helper_exception(&cpu->env, EXCP_FPE);
|
|
} else {
|
|
UPDATE_FP_FLAGS(cpu->env.fpcsr, tmp);
|
|
}
|
|
}
|
|
|
|
uint64_t HELPER(itofd)(CPUOpenRISCState *env, uint64_t val)
|
|
{
|
|
uint64_t itofd;
|
|
OpenRISCCPU *cpu = openrisc_env_get_cpu(env);
|
|
|
|
set_float_exception_flags(0, &cpu->env.fp_status);
|
|
itofd = int32_to_float64(val, &cpu->env.fp_status);
|
|
update_fpcsr(cpu);
|
|
|
|
return itofd;
|
|
}
|
|
|
|
uint32_t HELPER(itofs)(CPUOpenRISCState *env, uint32_t val)
|
|
{
|
|
uint32_t itofs;
|
|
OpenRISCCPU *cpu = openrisc_env_get_cpu(env);
|
|
|
|
set_float_exception_flags(0, &cpu->env.fp_status);
|
|
itofs = int32_to_float32(val, &cpu->env.fp_status);
|
|
update_fpcsr(cpu);
|
|
|
|
return itofs;
|
|
}
|
|
|
|
uint64_t HELPER(ftoid)(CPUOpenRISCState *env, uint64_t val)
|
|
{
|
|
uint64_t ftoid;
|
|
OpenRISCCPU *cpu = openrisc_env_get_cpu(env);
|
|
|
|
set_float_exception_flags(0, &cpu->env.fp_status);
|
|
ftoid = float32_to_int64(val, &cpu->env.fp_status);
|
|
update_fpcsr(cpu);
|
|
|
|
return ftoid;
|
|
}
|
|
|
|
uint32_t HELPER(ftois)(CPUOpenRISCState *env, uint32_t val)
|
|
{
|
|
uint32_t ftois;
|
|
OpenRISCCPU *cpu = openrisc_env_get_cpu(env);
|
|
|
|
set_float_exception_flags(0, &cpu->env.fp_status);
|
|
ftois = float32_to_int32(val, &cpu->env.fp_status);
|
|
update_fpcsr(cpu);
|
|
|
|
return ftois;
|
|
}
|
|
|
|
#define FLOAT_OP(name, p) void helper_float_##_##p(void)
|
|
|
|
#define FLOAT_CALC(name) \
|
|
uint64_t helper_float_ ## name ## _d(CPUOpenRISCState *env, \
|
|
uint64_t fdt0, uint64_t fdt1) \
|
|
{ \
|
|
uint64_t result; \
|
|
OpenRISCCPU *cpu = openrisc_env_get_cpu(env); \
|
|
set_float_exception_flags(0, &cpu->env.fp_status); \
|
|
result = float64_ ## name(fdt0, fdt1, &cpu->env.fp_status); \
|
|
update_fpcsr(cpu); \
|
|
return result; \
|
|
} \
|
|
\
|
|
uint32_t helper_float_ ## name ## _s(CPUOpenRISCState *env, \
|
|
uint32_t fdt0, uint32_t fdt1) \
|
|
{ \
|
|
uint32_t result; \
|
|
OpenRISCCPU *cpu = openrisc_env_get_cpu(env); \
|
|
set_float_exception_flags(0, &cpu->env.fp_status); \
|
|
result = float32_ ## name(fdt0, fdt1, &cpu->env.fp_status); \
|
|
update_fpcsr(cpu); \
|
|
return result; \
|
|
} \
|
|
|
|
FLOAT_CALC(add)
|
|
FLOAT_CALC(sub)
|
|
FLOAT_CALC(mul)
|
|
FLOAT_CALC(div)
|
|
FLOAT_CALC(rem)
|
|
#undef FLOAT_CALC
|
|
|
|
|
|
uint64_t helper_float_madd_d(CPUOpenRISCState *env, uint64_t a,
|
|
uint64_t b, uint64_t c)
|
|
{
|
|
OpenRISCCPU *cpu = openrisc_env_get_cpu(env);
|
|
uint64_t result;
|
|
set_float_exception_flags(0, &cpu->env.fp_status);
|
|
/* Note that or1ksim doesn't use merged operation. */
|
|
result = float64_mul(b, c, &cpu->env.fp_status);
|
|
result = float64_add(result, a, &cpu->env.fp_status);
|
|
update_fpcsr(cpu);
|
|
return result;
|
|
}
|
|
|
|
uint32_t helper_float_madd_s(CPUOpenRISCState *env, uint32_t a,
|
|
uint32_t b, uint32_t c)
|
|
{
|
|
OpenRISCCPU *cpu = openrisc_env_get_cpu(env);
|
|
uint32_t result;
|
|
set_float_exception_flags(0, &cpu->env.fp_status);
|
|
/* Note that or1ksim doesn't use merged operation. */
|
|
result = float32_mul(b, c, &cpu->env.fp_status);
|
|
result = float32_add(result, a, &cpu->env.fp_status);
|
|
update_fpcsr(cpu);
|
|
return result;
|
|
}
|
|
|
|
|
|
#define FLOAT_CMP(name) \
|
|
uint64_t helper_float_ ## name ## _d(CPUOpenRISCState *env, \
|
|
uint64_t fdt0, uint64_t fdt1) \
|
|
{ \
|
|
int res; \
|
|
OpenRISCCPU *cpu = openrisc_env_get_cpu(env); \
|
|
set_float_exception_flags(0, &cpu->env.fp_status); \
|
|
res = float64_ ## name(fdt0, fdt1, &cpu->env.fp_status); \
|
|
update_fpcsr(cpu); \
|
|
return res; \
|
|
} \
|
|
\
|
|
uint32_t helper_float_ ## name ## _s(CPUOpenRISCState *env, \
|
|
uint32_t fdt0, uint32_t fdt1)\
|
|
{ \
|
|
int res; \
|
|
OpenRISCCPU *cpu = openrisc_env_get_cpu(env); \
|
|
set_float_exception_flags(0, &cpu->env.fp_status); \
|
|
res = float32_ ## name(fdt0, fdt1, &cpu->env.fp_status); \
|
|
update_fpcsr(cpu); \
|
|
return res; \
|
|
}
|
|
|
|
FLOAT_CMP(le)
|
|
FLOAT_CMP(eq)
|
|
FLOAT_CMP(lt)
|
|
#undef FLOAT_CMP
|
|
|
|
|
|
#define FLOAT_CMPNE(name) \
|
|
uint64_t helper_float_ ## name ## _d(CPUOpenRISCState *env, \
|
|
uint64_t fdt0, uint64_t fdt1) \
|
|
{ \
|
|
int res; \
|
|
OpenRISCCPU *cpu = openrisc_env_get_cpu(env); \
|
|
set_float_exception_flags(0, &cpu->env.fp_status); \
|
|
res = !float64_eq_quiet(fdt0, fdt1, &cpu->env.fp_status); \
|
|
update_fpcsr(cpu); \
|
|
return res; \
|
|
} \
|
|
\
|
|
uint32_t helper_float_ ## name ## _s(CPUOpenRISCState *env, \
|
|
uint32_t fdt0, uint32_t fdt1) \
|
|
{ \
|
|
int res; \
|
|
OpenRISCCPU *cpu = openrisc_env_get_cpu(env); \
|
|
set_float_exception_flags(0, &cpu->env.fp_status); \
|
|
res = !float32_eq_quiet(fdt0, fdt1, &cpu->env.fp_status); \
|
|
update_fpcsr(cpu); \
|
|
return res; \
|
|
}
|
|
|
|
FLOAT_CMPNE(ne)
|
|
#undef FLOAT_CMPNE
|
|
|
|
#define FLOAT_CMPGT(name) \
|
|
uint64_t helper_float_ ## name ## _d(CPUOpenRISCState *env, \
|
|
uint64_t fdt0, uint64_t fdt1) \
|
|
{ \
|
|
int res; \
|
|
OpenRISCCPU *cpu = openrisc_env_get_cpu(env); \
|
|
set_float_exception_flags(0, &cpu->env.fp_status); \
|
|
res = !float64_le(fdt0, fdt1, &cpu->env.fp_status); \
|
|
update_fpcsr(cpu); \
|
|
return res; \
|
|
} \
|
|
\
|
|
uint32_t helper_float_ ## name ## _s(CPUOpenRISCState *env, \
|
|
uint32_t fdt0, uint32_t fdt1) \
|
|
{ \
|
|
int res; \
|
|
OpenRISCCPU *cpu = openrisc_env_get_cpu(env); \
|
|
set_float_exception_flags(0, &cpu->env.fp_status); \
|
|
res = !float32_le(fdt0, fdt1, &cpu->env.fp_status); \
|
|
update_fpcsr(cpu); \
|
|
return res; \
|
|
}
|
|
FLOAT_CMPGT(gt)
|
|
#undef FLOAT_CMPGT
|
|
|
|
#define FLOAT_CMPGE(name) \
|
|
uint64_t helper_float_ ## name ## _d(CPUOpenRISCState *env, \
|
|
uint64_t fdt0, uint64_t fdt1) \
|
|
{ \
|
|
int res; \
|
|
OpenRISCCPU *cpu = openrisc_env_get_cpu(env); \
|
|
set_float_exception_flags(0, &cpu->env.fp_status); \
|
|
res = !float64_lt(fdt0, fdt1, &cpu->env.fp_status); \
|
|
update_fpcsr(cpu); \
|
|
return res; \
|
|
} \
|
|
\
|
|
uint32_t helper_float_ ## name ## _s(CPUOpenRISCState *env, \
|
|
uint32_t fdt0, uint32_t fdt1) \
|
|
{ \
|
|
int res; \
|
|
OpenRISCCPU *cpu = openrisc_env_get_cpu(env); \
|
|
set_float_exception_flags(0, &cpu->env.fp_status); \
|
|
res = !float32_lt(fdt0, fdt1, &cpu->env.fp_status); \
|
|
update_fpcsr(cpu); \
|
|
return res; \
|
|
}
|
|
|
|
FLOAT_CMPGE(ge)
|
|
#undef FLOAT_CMPGE
|