diff options
author | bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162> | 2005-02-22 19:27:29 +0000 |
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committer | bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162> | 2005-02-22 19:27:29 +0000 |
commit | b7bcbe9524c05d5134136cce2d5d2a09c09a4f83 (patch) | |
tree | eca1dfcc0112e820adf13e28f1c24c486f11ba09 /target-arm | |
parent | 55754d9ef27178cf0e13aea85062fc4c32e25f83 (diff) | |
download | hqemu-b7bcbe9524c05d5134136cce2d5d2a09c09a4f83.zip hqemu-b7bcbe9524c05d5134136cce2d5d2a09c09a4f83.tar.gz |
ARM VFP support (Paul Brook)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1309 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'target-arm')
-rw-r--r-- | target-arm/cpu.h | 28 | ||||
-rw-r--r-- | target-arm/exec.h | 32 | ||||
-rw-r--r-- | target-arm/op.c | 255 | ||||
-rw-r--r-- | target-arm/op_helper.c | 229 | ||||
-rw-r--r-- | target-arm/translate.c | 565 |
5 files changed, 1096 insertions, 13 deletions
diff --git a/target-arm/cpu.h b/target-arm/cpu.h index c0994c0..a5f4f94 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 e17302e..64fce71 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 5618834..6c608f1 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 0000000..38c97fe --- /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 2eb325e..db38e33 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) |