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-rw-r--r--Changelog1
-rw-r--r--Makefile.target4
-rw-r--r--cpu-exec.c4
-rw-r--r--target-arm/cpu.h28
-rw-r--r--target-arm/exec.h32
-rw-r--r--target-arm/op.c255
-rw-r--r--target-arm/op_helper.c229
-rw-r--r--target-arm/translate.c565
8 files changed, 1104 insertions, 14 deletions
diff --git a/Changelog b/Changelog
index 2d1c067272..8898eba361 100644
--- a/Changelog
+++ b/Changelog
@@ -15,6 +15,7 @@ version 0.6.2:
- PC parallel port support (Mark Jonckheere)
- initial SPARC64 support (Blue Swirl)
- armv5te user mode support (Paul Brook)
+ - ARM VFP support (Paul Brook)
version 0.6.1:
diff --git a/Makefile.target b/Makefile.target
index 5ed2b92546..25f4719a32 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -259,6 +259,10 @@ ifeq ($(TARGET_BASE_ARCH), sparc)
LIBOBJS+= op_helper.o helper.o
endif
+ifeq ($(TARGET_BASE_ARCH), arm)
+LIBOBJS+= op_helper.o
+endif
+
# NOTE: the disassembler code is only needed for debugging
LIBOBJS+=disas.o
ifeq ($(findstring i386, $(TARGET_ARCH) $(ARCH)),i386)
diff --git a/cpu-exec.c b/cpu-exec.c
index 835ca42478..94c35e31b5 100644
--- a/cpu-exec.c
+++ b/cpu-exec.c
@@ -346,7 +346,8 @@ int cpu_exec(CPUState *env1)
cs_base = env->segs[R_CS].base;
pc = cs_base + env->eip;
#elif defined(TARGET_ARM)
- flags = env->thumb;
+ flags = env->thumb | (env->vfp.vec_len << 1)
+ | (env->vfp.vec_stride << 4);
cs_base = 0;
pc = env->regs[15];
#elif defined(TARGET_SPARC)
@@ -619,6 +620,7 @@ int cpu_exec(CPUState *env1)
#endif
#elif defined(TARGET_ARM)
env->cpsr = compute_cpsr();
+ /* XXX: Save/restore host fpu exception state?. */
#elif defined(TARGET_SPARC)
#elif defined(TARGET_PPC)
#else
diff --git a/target-arm/cpu.h b/target-arm/cpu.h
index c0994c0c64..a5f4f94e5f 100644
--- a/target-arm/cpu.h
+++ b/target-arm/cpu.h
@@ -29,6 +29,14 @@
#define EXCP_PREFETCH_ABORT 3
#define EXCP_DATA_ABORT 4
+/* We currently assume float and double are IEEE single and double
+ precision respectively.
+ Doing runtime conversions is tricky because VFP registers may contain
+ integer values (eg. as the result of a FTOSI instruction).
+ A double precision register load/store must also load/store the
+ corresponding single precision pair, although it is undefined how
+ these overlap. */
+
typedef struct CPUARMState {
uint32_t regs[16];
uint32_t cpsr;
@@ -50,6 +58,7 @@ typedef struct CPUARMState {
int interrupt_request;
struct TranslationBlock *current_tb;
int user_mode_only;
+ uint32_t address;
/* in order to avoid passing too many arguments to the memory
write helpers, we store some rarely used information in the CPU
@@ -58,6 +67,25 @@ typedef struct CPUARMState {
written */
unsigned long mem_write_vaddr; /* target virtual addr at which the
memory was written */
+ /* VFP coprocessor state. */
+ struct {
+ union {
+ float s[32];
+ double d[16];
+ } regs;
+
+ /* We store these fpcsr fields separately for convenience. */
+ int vec_len;
+ int vec_stride;
+
+ uint32_t fpscr;
+
+ /* Temporary variables if we don't have spare fp regs. */
+ float tmp0s, tmp1s;
+ double tmp0d, tmp1d;
+
+ } vfp;
+
/* user data */
void *opaque;
} CPUARMState;
diff --git a/target-arm/exec.h b/target-arm/exec.h
index e17302e0b5..64fce71537 100644
--- a/target-arm/exec.h
+++ b/target-arm/exec.h
@@ -24,13 +24,16 @@ register uint32_t T0 asm(AREG1);
register uint32_t T1 asm(AREG2);
register uint32_t T2 asm(AREG3);
+/* TODO: Put these in FP regs on targets that have such things. */
+/* It is ok for FT0s and FT0d to overlap. Likewise FT1s and FT1d. */
+#define FT0s env->vfp.tmp0s
+#define FT1s env->vfp.tmp1s
+#define FT0d env->vfp.tmp0d
+#define FT1d env->vfp.tmp1d
+
#include "cpu.h"
#include "exec-all.h"
-void cpu_lock(void);
-void cpu_unlock(void);
-void cpu_loop_exit(void);
-
/* Implemented CPSR bits. */
#define CACHED_CPSR_BITS 0xf8000000
static inline int compute_cpsr(void)
@@ -51,3 +54,24 @@ static inline void regs_to_env(void)
int cpu_arm_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
int is_user, int is_softmmu);
+
+/* In op_helper.c */
+
+void cpu_lock(void);
+void cpu_unlock(void);
+void cpu_loop_exit(void);
+
+void raise_exception(int);
+
+void do_vfp_abss(void);
+void do_vfp_absd(void);
+void do_vfp_negs(void);
+void do_vfp_negd(void);
+void do_vfp_sqrts(void);
+void do_vfp_sqrtd(void);
+void do_vfp_cmps(void);
+void do_vfp_cmpd(void);
+void do_vfp_cmpes(void);
+void do_vfp_cmped(void);
+void do_vfp_set_fpscr(void);
+void do_vfp_get_fpscr(void);
diff --git a/target-arm/op.c b/target-arm/op.c
index 561883457d..6c608f1414 100644
--- a/target-arm/op.c
+++ b/target-arm/op.c
@@ -2,6 +2,7 @@
* ARM micro operations
*
* Copyright (c) 2003 Fabrice Bellard
+ * Copyright (c) 2005 CodeSourcery, LLC
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@@ -857,17 +858,259 @@ void OPPROTO op_undef_insn(void)
cpu_loop_exit();
}
-/* thread support */
+/* VFP support. We follow the convention used for VFP instrunctions:
+ Single precition routines have a "s" suffix, double precision a
+ "d" suffix. */
-spinlock_t global_cpu_lock = SPIN_LOCK_UNLOCKED;
+#define VFP_OP(name, p) void OPPROTO op_vfp_##name##p(void)
-void cpu_lock(void)
+#define VFP_BINOP(name, op) \
+VFP_OP(name, s) \
+{ \
+ FT0s = FT0s op FT1s; \
+} \
+VFP_OP(name, d) \
+{ \
+ FT0d = FT0d op FT1d; \
+}
+VFP_BINOP(add, +)
+VFP_BINOP(sub, -)
+VFP_BINOP(mul, *)
+VFP_BINOP(div, /)
+#undef VFP_BINOP
+
+#define VFP_HELPER(name) \
+VFP_OP(name, s) \
+{ \
+ do_vfp_##name##s(); \
+} \
+VFP_OP(name, d) \
+{ \
+ do_vfp_##name##d(); \
+}
+VFP_HELPER(abs)
+VFP_HELPER(sqrt)
+VFP_HELPER(cmp)
+VFP_HELPER(cmpe)
+#undef VFP_HELPER
+
+/* XXX: Will this do the right thing for NANs. Should invert the signbit
+ without looking at the rest of the value. */
+VFP_OP(neg, s)
+{
+ FT0s = -FT0s;
+}
+
+VFP_OP(neg, d)
+{
+ FT0d = -FT0d;
+}
+
+VFP_OP(F1_ld0, s)
+{
+ FT1s = 0.0f;
+}
+
+VFP_OP(F1_ld0, d)
+{
+ FT1d = 0.0;
+}
+
+/* Helper routines to perform bitwise copies between float and int. */
+static inline float vfp_itos(uint32_t i)
+{
+ union {
+ uint32_t i;
+ float s;
+ } v;
+
+ v.i = i;
+ return v.s;
+}
+
+static inline uint32_t vfp_stoi(float s)
+{
+ union {
+ uint32_t i;
+ float s;
+ } v;
+
+ v.s = s;
+ return v.i;
+}
+
+/* Integer to float conversion. */
+VFP_OP(uito, s)
+{
+ FT0s = (float)(uint32_t)vfp_stoi(FT0s);
+}
+
+VFP_OP(uito, d)
+{
+ FT0d = (double)(uint32_t)vfp_stoi(FT0s);
+}
+
+VFP_OP(sito, s)
+{
+ FT0s = (float)(int32_t)vfp_stoi(FT0s);
+}
+
+VFP_OP(sito, d)
+{
+ FT0d = (double)(int32_t)vfp_stoi(FT0s);
+}
+
+/* Float to integer conversion. */
+VFP_OP(toui, s)
+{
+ FT0s = vfp_itos((uint32_t)FT0s);
+}
+
+VFP_OP(toui, d)
+{
+ FT0s = vfp_itos((uint32_t)FT0d);
+}
+
+VFP_OP(tosi, s)
+{
+ FT0s = vfp_itos((int32_t)FT0s);
+}
+
+VFP_OP(tosi, d)
+{
+ FT0s = vfp_itos((int32_t)FT0d);
+}
+
+/* TODO: Set rounding mode properly. */
+VFP_OP(touiz, s)
+{
+ FT0s = vfp_itos((uint32_t)FT0s);
+}
+
+VFP_OP(touiz, d)
+{
+ FT0s = vfp_itos((uint32_t)FT0d);
+}
+
+VFP_OP(tosiz, s)
+{
+ FT0s = vfp_itos((int32_t)FT0s);
+}
+
+VFP_OP(tosiz, d)
{
- spin_lock(&global_cpu_lock);
+ FT0s = vfp_itos((int32_t)FT0d);
}
-void cpu_unlock(void)
+/* floating point conversion */
+VFP_OP(fcvtd, s)
{
- spin_unlock(&global_cpu_lock);
+ FT0d = (double)FT0s;
}
+VFP_OP(fcvts, d)
+{
+ FT0s = (float)FT0d;
+}
+
+/* Get and Put values from registers. */
+VFP_OP(getreg_F0, d)
+{
+ FT0d = *(double *)((char *) env + PARAM1);
+}
+
+VFP_OP(getreg_F0, s)
+{
+ FT0s = *(float *)((char *) env + PARAM1);
+}
+
+VFP_OP(getreg_F1, d)
+{
+ FT1d = *(double *)((char *) env + PARAM1);
+}
+
+VFP_OP(getreg_F1, s)
+{
+ FT1s = *(float *)((char *) env + PARAM1);
+}
+
+VFP_OP(setreg_F0, d)
+{
+ *(double *)((char *) env + PARAM1) = FT0d;
+}
+
+VFP_OP(setreg_F0, s)
+{
+ *(float *)((char *) env + PARAM1) = FT0s;
+}
+
+VFP_OP(foobar, d)
+{
+ FT0d = env->vfp.regs.s[3];
+}
+
+void OPPROTO op_vfp_movl_T0_fpscr(void)
+{
+ do_vfp_get_fpscr ();
+}
+
+void OPPROTO op_vfp_movl_T0_fpscr_flags(void)
+{
+ T0 = env->vfp.fpscr & (0xf << 28);
+}
+
+void OPPROTO op_vfp_movl_fpscr_T0(void)
+{
+ do_vfp_set_fpscr();
+}
+
+/* Move between FT0s to T0 */
+void OPPROTO op_vfp_mrs(void)
+{
+ T0 = vfp_stoi(FT0s);
+}
+
+void OPPROTO op_vfp_msr(void)
+{
+ FT0s = vfp_itos(T0);
+}
+
+/* Move between FT0d and {T0,T1} */
+void OPPROTO op_vfp_mrrd(void)
+{
+ CPU_DoubleU u;
+
+ u.d = FT0d;
+ T0 = u.l.lower;
+ T1 = u.l.upper;
+}
+
+void OPPROTO op_vfp_mdrr(void)
+{
+ CPU_DoubleU u;
+
+ u.l.lower = T0;
+ u.l.upper = T1;
+ FT0d = u.d;
+}
+
+/* Floating point load/store. Address is in T1 */
+void OPPROTO op_vfp_lds(void)
+{
+ FT0s = ldfl((void *)T1);
+}
+
+void OPPROTO op_vfp_ldd(void)
+{
+ FT0d = ldfq((void *)T1);
+}
+
+void OPPROTO op_vfp_sts(void)
+{
+ stfl((void *)T1, FT0s);
+}
+
+void OPPROTO op_vfp_std(void)
+{
+ stfq((void *)T1, FT0d);
+}
diff --git a/target-arm/op_helper.c b/target-arm/op_helper.c
new file mode 100644
index 0000000000..38c97fe68f
--- /dev/null
+++ b/target-arm/op_helper.c
@@ -0,0 +1,229 @@
+/*
+ * ARM helper routines
+ *
+ * Copyright (c) 2005 CodeSourcery, LLC
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <math.h>
+#include <fenv.h>
+#include "exec.h"
+
+/* If the host doesn't define C99 math intrinsics then use the normal
+ operators. This may generate excess exceptions, but it's probably
+ near enough for most things. */
+#ifndef isless
+#define isless(x, y) (x < y)
+#endif
+#ifndef isgreater
+#define isgreater(x, y) (x > y)
+#endif
+#ifndef isunordered
+#define isunordered(x, y) (!((x < y) || (x >= y)))
+#endif
+
+void raise_exception(int tt)
+{
+ env->exception_index = tt;
+ cpu_loop_exit();
+}
+
+/* thread support */
+
+spinlock_t global_cpu_lock = SPIN_LOCK_UNLOCKED;
+
+void cpu_lock(void)
+{
+ spin_lock(&global_cpu_lock);
+}
+
+void cpu_unlock(void)
+{
+ spin_unlock(&global_cpu_lock);
+}
+
+/* VFP support. */
+
+void do_vfp_abss(void)
+{
+ FT0s = fabsf(FT0s);
+}
+
+void do_vfp_absd(void)
+{
+ FT0d = fabs(FT0d);
+}
+
+void do_vfp_sqrts(void)
+{
+ FT0s = sqrtf(FT0s);
+}
+
+void do_vfp_sqrtd(void)
+{
+ FT0d = sqrt(FT0d);
+}
+
+/* We use an == operator first to generate teh correct floating point
+ exception. Subsequent comparisons use the exception-safe macros. */
+#define DO_VFP_cmp(p) \
+void do_vfp_cmp##p(void) \
+{ \
+ uint32_t flags; \
+ if (FT0##p == FT1##p) \
+ flags = 0xc; \
+ else if (isless (FT0##p, FT1##p)) \
+ flags = 0x8; \
+ else if (isgreater (FT0##p, FT1##p)) \
+ flags = 0x2; \
+ else /* unordered */ \
+ flags = 0x3; \
+ env->vfp.fpscr = (flags << 28) | (env->vfp.fpscr & 0x0fffffff); \
+ FORCE_RET(); \
+}
+DO_VFP_cmp(s)
+DO_VFP_cmp(d)
+#undef DO_VFP_cmp
+
+/* We use a > operator first to get FP exceptions right. */
+#define DO_VFP_cmpe(p) \
+void do_vfp_cmpe##p(void) \
+{ \
+ uint32_t flags; \
+ if (FT0##p > FT1##p) \
+ flags = 0x2; \
+ else if (isless (FT0##p, FT1##p)) \
+ flags = 0x8; \
+ else if (isunordered (FT0##p, FT1##p)) \
+ flags = 0x3; \
+ else /* equal */ \
+ flags = 0xc; \
+ env->vfp.fpscr = (flags << 28) | (env->vfp.fpscr & 0x0fffffff); \
+ FORCE_RET(); \
+}
+DO_VFP_cmpe(s)
+DO_VFP_cmpe(d)
+#undef DO_VFP_cmpe
+
+/* Convert host exception flags to vfp form. */
+int vfp_exceptbits_from_host(int host_bits)
+{
+ int target_bits = 0;
+
+#ifdef FE_INVALID
+ if (host_bits & FE_INVALID)
+ target_bits |= 1;
+#endif
+#ifdef FE_DIVBYZERO
+ if (host_bits & FE_DIVBYZERO)
+ target_bits |= 2;
+#endif
+#ifdef FE_OVERFLOW
+ if (host_bits & FE_OVERFLOW)
+ target_bits |= 4;
+#endif
+#ifdef FE_UNDERFLOW
+ if (host_bits & FE_UNDERFLOW)
+ target_bits |= 8;
+#endif
+#ifdef FE_INEXACT
+ if (host_bits & FE_INEXACT)
+ target_bits |= 0x10;
+#endif
+ /* C doesn't define an inexact exception. */
+ return target_bits;
+}
+
+/* Convert vfp exception flags to target form. */
+int vfp_host_exceptbits_to_host(int target_bits)
+{
+ int host_bits = 0;
+
+#ifdef FE_INVALID
+ if (target_bits & 1)
+ host_bits |= FE_INVALID;
+#endif
+#ifdef FE_DIVBYZERO
+ if (target_bits & 2)
+ host_bits |= FE_DIVBYZERO;
+#endif
+#ifdef FE_OVERFLOW
+ if (target_bits & 4)
+ host_bits |= FE_OVERFLOW;
+#endif
+#ifdef FE_UNDERFLOW
+ if (target_bits & 8)
+ host_bits |= FE_UNDERFLOW;
+#endif
+#ifdef FE_INEXACT
+ if (target_bits & 0x10)
+ host_bits |= FE_INEXACT;
+#endif
+ return host_bits;
+}
+
+void do_vfp_set_fpscr(void)
+{
+ int i;
+ uint32_t changed;
+
+ changed = env->vfp.fpscr;
+ env->vfp.fpscr = (T0 & 0xffc8ffff);
+ env->vfp.vec_len = (T0 >> 16) & 7;
+ env->vfp.vec_stride = (T0 >> 20) & 3;
+
+ changed ^= T0;
+ if (changed & (3 << 22)) {
+ i = (T0 >> 22) & 3;
+ switch (i) {
+ case 0:
+ i = FE_TONEAREST;
+ break;
+ case 1:
+ i = FE_UPWARD;
+ break;
+ case 2:
+ i = FE_DOWNWARD;
+ break;
+ case 3:
+ i = FE_TOWARDZERO;
+ break;
+ }
+ fesetround (i);
+ }
+
+ /* Clear host exception flags. */
+ feclearexcept(FE_ALL_EXCEPT);
+
+#ifdef feenableexcept
+ if (changed & 0x1f00) {
+ i = vfp_exceptbits_to_host((T0 >> 8) & 0x1f);
+ feenableexcept (i);
+ fedisableexcept (FE_ALL_EXCEPT & ~i);
+ }
+#endif
+ /* XXX: FZ and DN are not implemented. */
+}
+
+void do_vfp_get_fpscr(void)
+{
+ int i;
+
+ T0 = (env->vfp.fpscr & 0xffc8ffff) | (env->vfp.vec_len << 16)
+ | (env->vfp.vec_stride << 20);
+ i = fetestexcept(FE_ALL_EXCEPT);
+ T0 |= vfp_exceptbits_from_host(i);
+}
diff --git a/target-arm/translate.c b/target-arm/translate.c
index 2eb325e8e6..db38e331b6 100644
--- a/target-arm/translate.c
+++ b/target-arm/translate.c
@@ -2,6 +2,7 @@
* ARM translation
*
* Copyright (c) 2003 Fabrice Bellard
+ * Copyright (c) 2005 CodeSourcery, LLC
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@@ -354,7 +355,527 @@ static inline void gen_add_datah_offset(DisasContext *s, unsigned int insn)
}
}
-static void disas_arm_insn(DisasContext *s)
+#define VFP_OP(name) \
+static inline void gen_vfp_##name(int dp) \
+{ \
+ if (dp) \
+ gen_op_vfp_##name##d(); \
+ else \
+ gen_op_vfp_##name##s(); \
+}
+
+VFP_OP(add)
+VFP_OP(sub)
+VFP_OP(mul)
+VFP_OP(div)
+VFP_OP(neg)
+VFP_OP(abs)
+VFP_OP(sqrt)
+VFP_OP(cmp)
+VFP_OP(cmpe)
+VFP_OP(F1_ld0)
+VFP_OP(uito)
+VFP_OP(sito)
+VFP_OP(toui)
+VFP_OP(touiz)
+VFP_OP(tosi)
+VFP_OP(tosiz)
+VFP_OP(ld)
+VFP_OP(st)
+
+#undef VFP_OP
+
+static inline void gen_mov_F0_vreg(int dp, int reg)
+{
+ if (dp)
+ gen_op_vfp_getreg_F0d(offsetof(CPUARMState, vfp.regs.d[reg]));
+ else
+ gen_op_vfp_getreg_F0s(offsetof(CPUARMState, vfp.regs.s[reg]));
+}
+
+static inline void gen_mov_F1_vreg(int dp, int reg)
+{
+ if (dp)
+ gen_op_vfp_getreg_F1d(offsetof(CPUARMState, vfp.regs.d[reg]));
+ else
+ gen_op_vfp_getreg_F1s(offsetof(CPUARMState, vfp.regs.s[reg]));
+}
+
+static inline void gen_mov_vreg_F0(int dp, int reg)
+{
+ if (dp)
+ gen_op_vfp_setreg_F0d(offsetof(CPUARMState, vfp.regs.d[reg]));
+ else
+ gen_op_vfp_setreg_F0s(offsetof(CPUARMState, vfp.regs.s[reg]));
+}
+
+/* Disassemble a VFP instruction. Returns nonzero if an error occured
+ (ie. an undefined instruction). */
+static int disas_vfp_insn(CPUState * env, DisasContext *s, uint32_t insn)
+{
+ uint32_t rd, rn, rm, op, i, n, offset, delta_d, delta_m, bank_mask;
+ int dp, veclen;
+
+ dp = ((insn & 0xf00) == 0xb00);
+ switch ((insn >> 24) & 0xf) {
+ case 0xe:
+ if (insn & (1 << 4)) {
+ /* single register transfer */
+ if ((insn & 0x6f) != 0x00)
+ return 1;
+ rd = (insn >> 12) & 0xf;
+ if (dp) {
+ if (insn & 0x80)
+ return 1;
+ rn = (insn >> 16) & 0xf;
+ /* Get the existing value even for arm->vfp moves because
+ we only set half the register. */
+ gen_mov_F0_vreg(1, rn);
+ gen_op_vfp_mrrd();
+ if (insn & (1 << 20)) {
+ /* vfp->arm */
+ if (insn & (1 << 21))
+ gen_movl_reg_T1(s, rd);
+ else
+ gen_movl_reg_T0(s, rd);
+ } else {
+ /* arm->vfp */
+ if (insn & (1 << 21))
+ gen_movl_T1_reg(s, rd);
+ else
+ gen_movl_T0_reg(s, rd);
+ gen_op_vfp_mdrr();
+ gen_mov_vreg_F0(dp, rn);
+ }
+ } else {
+ rn = ((insn >> 15) & 0x1e) | ((insn >> 7) & 1);
+ if (insn & (1 << 20)) {
+ /* vfp->arm */
+ if (insn & (1 << 21)) {
+ /* system register */
+ switch (rn) {
+ case 0: /* fpsid */
+ n = 0x0091A0000;
+ break;
+ case 2: /* fpscr */
+ if (rd == 15)
+ gen_op_vfp_movl_T0_fpscr_flags();
+ else
+ gen_op_vfp_movl_T0_fpscr();
+ break;
+ default:
+ return 1;
+ }
+ } else {
+ gen_mov_F0_vreg(0, rn);
+ gen_op_vfp_mrs();
+ }
+ if (rd == 15) {
+ /* This will only set the 4 flag bits */
+ gen_op_movl_psr_T0();
+ } else
+ gen_movl_reg_T0(s, rd);
+ } else {
+ /* arm->vfp */
+ gen_movl_T0_reg(s, rd);
+ if (insn & (1 << 21)) {
+ /* system register */
+ switch (rn) {
+ case 0: /* fpsid */
+ /* Writes are ignored. */
+ break;
+ case 2: /* fpscr */
+ gen_op_vfp_movl_fpscr_T0();
+ /* This could change vector settings, so jump to
+ the next instuction. */
+ gen_op_movl_T0_im(s->pc);
+ gen_movl_reg_T0(s, 15);
+ s->is_jmp = DISAS_UPDATE;
+ break;
+ default:
+ return 1;
+ }
+ } else {
+ gen_op_vfp_msr();
+ gen_mov_vreg_F0(0, rn);
+ }
+ }
+ }
+ } else {
+ /* data processing */
+ /* The opcode is in bits 23, 21, 20 and 6. */
+ op = ((insn >> 20) & 8) | ((insn >> 19) & 6) | ((insn >> 6) & 1);
+ if (dp) {
+ if (op == 15) {
+ /* rn is opcode */
+ rn = ((insn >> 15) & 0x1e) | ((insn >> 7) & 1);
+ } else {
+ /* rn is register number */
+ if (insn & (1 << 7))
+ return 1;
+ rn = (insn >> 16) & 0xf;
+ }
+
+ if (op == 15 && (rn == 15 || rn > 17)) {
+ /* Integer or single precision destination. */
+ rd = ((insn >> 11) & 0x1e) | ((insn >> 22) & 1);
+ } else {
+ if (insn & (1 << 22))
+ return 1;
+ rd = (insn >> 12) & 0xf;
+ }
+
+ if (op == 15 && (rn == 16 || rn == 17)) {
+ /* Integer source. */
+ rm = ((insn << 1) & 0x1e) | ((insn >> 5) & 1);
+ } else {
+ if (insn & (1 << 5))
+ return 1;
+ rm = insn & 0xf;
+ }
+ } else {
+ rn = ((insn >> 15) & 0x1e) | ((insn >> 7) & 1);
+ if (op == 15 && rn == 15) {
+ /* Double precision destination. */
+ if (insn & (1 << 22))
+ return 1;
+ rd = (insn >> 12) & 0xf;
+ } else
+ rd = ((insn >> 11) & 0x1e) | ((insn >> 22) & 1);
+ rm = ((insn << 1) & 0x1e) | ((insn >> 5) & 1);
+ }
+
+ veclen = env->vfp.vec_len;
+ if (op == 15 && rn > 3)
+ veclen = 0;
+
+ /* Shut up compiler warnings. */
+ delta_m = 0;
+ delta_d = 0;
+ bank_mask = 0;
+
+ if (veclen > 0) {
+ if (dp)
+ bank_mask = 0xc;
+ else
+ bank_mask = 0x18;
+
+ /* Figure out what type of vector operation this is. */
+ if ((rd & bank_mask) == 0) {
+ /* scalar */
+ veclen = 0;
+ } else {
+ if (dp)
+ delta_d = (env->vfp.vec_stride >> 1) + 1;
+ else
+ delta_d = env->vfp.vec_stride + 1;
+
+ if ((rm & bank_mask) == 0) {
+ /* mixed scalar/vector */
+ delta_m = 0;
+ } else {
+ /* vector */
+ delta_m = delta_d;
+ }
+ }
+ }
+
+ /* Load the initial operands. */
+ if (op == 15) {
+ switch (rn) {
+ case 16:
+ case 17:
+ /* Integer source */
+ gen_mov_F0_vreg(0, rm);
+ break;
+ case 8:
+ case 9:
+ /* Compare */
+ gen_mov_F0_vreg(dp, rd);
+ gen_mov_F1_vreg(dp, rm);
+ break;
+ case 10:
+ case 11:
+ /* Compare with zero */
+ gen_mov_F0_vreg(dp, rd);
+ gen_vfp_F1_ld0(dp);
+ break;
+ default:
+ /* One source operand. */
+ gen_mov_F0_vreg(dp, rm);
+ }
+ } else {
+ /* Two source operands. */
+ gen_mov_F0_vreg(dp, rn);
+ gen_mov_F1_vreg(dp, rm);
+ }
+
+ for (;;) {
+ /* Perform the calculation. */
+ switch (op) {
+ case 0: /* mac: fd + (fn * fm) */
+ gen_vfp_mul(dp);
+ gen_mov_F1_vreg(dp, rd);
+ gen_vfp_add(dp);
+ break;
+ case 1: /* nmac: fd - (fn * fm) */
+ gen_vfp_mul(dp);
+ gen_vfp_neg(dp);
+ gen_mov_F1_vreg(dp, rd);
+ gen_vfp_add(dp);
+ break;
+ case 2: /* msc: -fd + (fn * fm) */
+ gen_vfp_mul(dp);
+ gen_mov_F1_vreg(dp, rd);
+ gen_vfp_sub(dp);
+ break;
+ case 3: /* nmsc: -fd - (fn * fm) */
+ gen_vfp_mul(dp);
+ gen_mov_F1_vreg(dp, rd);
+ gen_vfp_add(dp);
+ gen_vfp_neg(dp);
+ break;
+ case 4: /* mul: fn * fm */
+ gen_vfp_mul(dp);
+ break;
+ case 5: /* nmul: -(fn * fm) */
+ gen_vfp_mul(dp);
+ gen_vfp_neg(dp);
+ break;
+ case 6: /* add: fn + fm */
+ gen_vfp_add(dp);
+ break;
+ case 7: /* sub: fn - fm */
+ gen_vfp_sub(dp);
+ break;
+ case 8: /* div: fn / fm */
+ gen_vfp_div(dp);
+ break;
+ case 15: /* extension space */
+ switch (rn) {
+ case 0: /* cpy */
+ /* no-op */
+ break;
+ case 1: /* abs */
+ gen_vfp_abs(dp);
+ break;
+ case 2: /* neg */
+ gen_vfp_neg(dp);
+ break;
+ case 3: /* sqrt */
+ gen_vfp_sqrt(dp);
+ break;
+ case 8: /* cmp */
+ gen_vfp_cmp(dp);
+ break;
+ case 9: /* cmpe */
+ gen_vfp_cmpe(dp);
+ break;
+ case 10: /* cmpz */
+ gen_vfp_cmp(dp);
+ break;
+ case 11: /* cmpez */
+ gen_vfp_F1_ld0(dp);
+ gen_vfp_cmpe(dp);
+ break;
+ case 15: /* single<->double conversion */
+ if (dp)
+ gen_op_vfp_fcvtsd();
+ else
+ gen_op_vfp_fcvtds();
+ break;
+ case 16: /* fuito */
+ gen_vfp_uito(dp);
+ break;
+ case 17: /* fsito */
+ gen_vfp_sito(dp);
+ break;
+ case 24: /* ftoui */
+ gen_vfp_toui(dp);
+ break;
+ case 25: /* ftouiz */
+ gen_vfp_touiz(dp);
+ break;
+ case 26: /* ftosi */
+ gen_vfp_tosi(dp);
+ break;
+ case 27: /* ftosiz */
+ gen_vfp_tosiz(dp);
+ break;
+ default: /* undefined */
+ printf ("rn:%d\n", rn);
+ return 1;
+ }
+ break;
+ default: /* undefined */
+ printf ("op:%d\n", op);
+ return 1;
+ }
+
+ /* Write back the result. */
+ if (op == 15 && (rn >= 8 && rn <= 11))
+ ; /* Comparison, do nothing. */
+ else if (op == 15 && rn > 17)
+ /* Integer result. */
+ gen_mov_vreg_F0(0, rd);
+ else if (op == 15 && rn == 15)
+ /* conversion */
+ gen_mov_vreg_F0(!dp, rd);
+ else
+ gen_mov_vreg_F0(dp, rd);
+
+ /* break out of the loop if we have finished */
+ if (veclen == 0)
+ break;
+
+ if (op == 15 && delta_m == 0) {
+ /* single source one-many */
+ while (veclen--) {
+ rd = ((rd + delta_d) & (bank_mask - 1))
+ | (rd & bank_mask);
+ gen_mov_vreg_F0(dp, rd);
+ }
+ break;
+ }
+ /* Setup the next operands. */
+ veclen--;
+ rd = ((rd + delta_d) & (bank_mask - 1))
+ | (rd & bank_mask);
+
+ if (op == 15) {
+ /* One source operand. */
+ rm = ((rm + delta_m) & (bank_mask - 1))
+ | (rm & bank_mask);
+ gen_mov_F0_vreg(dp, rm);
+ } else {
+ /* Two source operands. */
+ rn = ((rn + delta_d) & (bank_mask - 1))
+ | (rn & bank_mask);
+ gen_mov_F0_vreg(dp, rn);
+ if (delta_m) {
+ rm = ((rm + delta_m) & (bank_mask - 1))
+ | (rm & bank_mask);
+ gen_mov_F1_vreg(dp, rm);
+ }
+ }
+ }
+ }
+ break;
+ case 0xc:
+ case 0xd:
+ if (dp && (insn & (1 << 22))) {
+ /* two-register transfer */
+ rn = (insn >> 16) & 0xf;
+ rd = (insn >> 12) & 0xf;
+ if (dp) {
+ if (insn & (1 << 5))
+ return 1;
+ rm = insn & 0xf;
+ } else
+ rm = ((insn << 1) & 0x1e) | ((insn >> 5) & 1);
+
+ if (insn & (1 << 20)) {
+ /* vfp->arm */
+ if (dp) {
+ gen_mov_F0_vreg(1, rm);
+ gen_op_vfp_mrrd();
+ gen_movl_reg_T0(s, rd);
+ gen_movl_reg_T1(s, rn);
+ } else {
+ gen_mov_F0_vreg(0, rm);
+ gen_op_vfp_mrs();
+ gen_movl_reg_T0(s, rn);
+ gen_mov_F0_vreg(0, rm + 1);
+ gen_op_vfp_mrs();
+ gen_movl_reg_T0(s, rd);
+ }
+ } else {
+ /* arm->vfp */
+ if (dp) {
+ gen_movl_T0_reg(s, rd);
+ gen_movl_T1_reg(s, rn);
+ gen_op_vfp_mdrr();
+ gen_mov_vreg_F0(1, rm);
+ } else {
+ gen_movl_T0_reg(s, rn);
+ gen_op_vfp_msr();
+ gen_mov_vreg_F0(0, rm);
+ gen_movl_T0_reg(s, rd);
+ gen_op_vfp_msr();
+ gen_mov_vreg_F0(0, rm + 1);
+ }
+ }
+ } else {
+ /* Load/store */
+ rn = (insn >> 16) & 0xf;
+ if (dp)
+ rd = (insn >> 12) & 0xf;
+ else
+ rd = ((insn >> 11) & 0x1e) | ((insn >> 22) & 1);
+ gen_movl_T1_reg(s, rn);
+ if ((insn & 0x01200000) == 0x01000000) {
+ /* Single load/store */
+ offset = (insn & 0xff) << 2;
+ if ((insn & (1 << 23)) == 0)
+ offset = -offset;
+ gen_op_addl_T1_im(offset);
+ if (insn & (1 << 20)) {
+ gen_vfp_ld(dp);
+ gen_mov_vreg_F0(dp, rd);
+ } else {
+ gen_mov_F0_vreg(dp, rd);
+ gen_vfp_st(dp);
+ }
+ } else {
+ /* load/store multiple */
+ if (dp)
+ n = (insn >> 1) & 0x7f;
+ else
+ n = insn & 0xff;
+
+ if (insn & (1 << 24)) /* pre-decrement */
+ gen_op_addl_T1_im(-((insn & 0xff) << 2));
+
+ if (dp)
+ offset = 8;
+ else
+ offset = 4;
+ for (i = 0; i < n; i++) {
+ if (insn & (1 << 20)) {
+ /* load */
+ gen_vfp_ld(dp);
+ gen_mov_vreg_F0(dp, rd + i);
+ } else {
+ /* store */
+ gen_mov_F0_vreg(dp, rd + i);
+ gen_vfp_st(dp);
+ }
+ gen_op_addl_T1_im(offset);
+ }
+ if (insn & (1 << 21)) {
+ /* writeback */
+ if (insn & (1 << 24))
+ offset = -offset * n;
+ else if (dp && (insn & 1))
+ offset = 4;
+ else
+ offset = 0;
+
+ if (offset != 0)
+ gen_op_addl_T1_im(offset);
+ gen_movl_reg_T1(s, rn);
+ }
+ }
+ }
+ break;
+ default:
+ /* Should never happen. */
+ return 1;
+ }
+ return 0;
+}
+
+static void disas_arm_insn(CPUState * env, DisasContext *s)
{
unsigned int cond, insn, val, op1, i, shift, rm, rs, rn, rd, sh;
@@ -363,6 +884,7 @@ static void disas_arm_insn(DisasContext *s)
cond = insn >> 28;
if (cond == 0xf){
+ /* Unconditional instructions. */
if ((insn & 0x0d70f000) == 0x0550f000)
return; /* PLD */
else if ((insn & 0x0e000000) == 0x0a000000) {
@@ -381,6 +903,10 @@ static void disas_arm_insn(DisasContext *s)
gen_op_movl_T0_im(val);
gen_bx(s);
return;
+ } else if ((insn & 0x0fe00000) == 0x0c400000) {
+ /* Coprocessor double register transfer. */
+ } else if ((insn & 0x0f000010) == 0x0e000010) {
+ /* Additional coprocessor register transfer. */
}
goto illegal_op;
}
@@ -934,6 +1460,22 @@ static void disas_arm_insn(DisasContext *s)
s->is_jmp = DISAS_TB_JUMP;
}
break;
+ case 0xc:
+ case 0xd:
+ case 0xe:
+ /* Coprocessor. */
+ op1 = (insn >> 8) & 0xf;
+ switch (op1) {
+ case 10:
+ case 11:
+ if (disas_vfp_insn (env, s, insn))
+ goto illegal_op;
+ break;
+ default:
+ /* unknown coprocessor. */
+ goto illegal_op;
+ }
+ break;
case 0xf:
/* swi */
gen_op_movl_T0_im((long)s->pc);
@@ -1484,7 +2026,7 @@ static inline int gen_intermediate_code_internal(CPUState *env,
if (env->thumb)
disas_thumb_insn(dc);
else
- disas_arm_insn(dc);
+ disas_arm_insn(env, dc);
} while (!dc->is_jmp && gen_opc_ptr < gen_opc_end &&
(dc->pc - pc_start) < (TARGET_PAGE_SIZE - 32));
switch(dc->is_jmp) {
@@ -1557,6 +2099,11 @@ void cpu_dump_state(CPUState *env, FILE *f,
int flags)
{
int i;
+ struct {
+ uint32_t i;
+ float s;
+ } s0, s1;
+ CPU_DoubleU d;
for(i=0;i<16;i++) {
cpu_fprintf(f, "R%02d=%08x", i, env->regs[i]);
@@ -1566,11 +2113,23 @@ void cpu_dump_state(CPUState *env, FILE *f,
cpu_fprintf(f, " ");
}
cpu_fprintf(f, "PSR=%08x %c%c%c%c\n",
- env->cpsr,
+ env->cpsr,
env->cpsr & (1 << 31) ? 'N' : '-',
env->cpsr & (1 << 30) ? 'Z' : '-',
env->cpsr & (1 << 29) ? 'C' : '-',
env->cpsr & (1 << 28) ? 'V' : '-');
+
+ for (i = 0; i < 16; i++) {
+ s0.s = env->vfp.regs.s[i * 2];
+ s1.s = env->vfp.regs.s[i * 2 + 1];
+ d.d = env->vfp.regs.d[i];
+ cpu_fprintf(f, "s%02d=%08x(%8f) s%02d=%08x(%8f) d%02d=%08x%08x(%8f)\n",
+ i * 2, (int)s0.i, s0.s,
+ i * 2 + 1, (int)s0.i, s0.s,
+ i, (int)(uint32_t)d.l.upper, (int)(uint32_t)d.l.lower,
+ d.d);
+ cpu_fprintf(f, "FPSCR: %08x\n", (int)env->vfp.fpscr);
+ }
}
target_ulong cpu_get_phys_page_debug(CPUState *env, target_ulong addr)
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-05 01:06:16 +0000