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author | bunnei <bunneidev@gmail.com> | 2014-10-30 03:25:54 +0100 |
---|---|---|
committer | bunnei <bunneidev@gmail.com> | 2014-11-02 07:04:41 +0100 |
commit | bc6989b0752b601762499fc1f3a0771980fd88f5 (patch) | |
tree | d07786caf1858fb41812d6b38b9865260e2178f4 /src/core/arm/skyeye_common/vfp/vfp.cpp | |
parent | Merge pull request #178 from archshift/errf (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | src/core/arm/skyeye_common/vfp/vfp.cpp | 476 |
1 files changed, 258 insertions, 218 deletions
diff --git a/src/core/arm/skyeye_common/vfp/vfp.cpp b/src/core/arm/skyeye_common/vfp/vfp.cpp index e4fa3c20a..454f60099 100644 --- a/src/core/arm/skyeye_common/vfp/vfp.cpp +++ b/src/core/arm/skyeye_common/vfp/vfp.cpp @@ -28,230 +28,270 @@ #include "core/arm/skyeye_common/armdefs.h" #include "core/arm/skyeye_common/vfp/vfp.h" +#define DEBUG DBG + //ARMul_State* persistent_state; /* function calls from SoftFloat lib don't have an access to ARMul_state. */ unsigned VFPInit (ARMul_State *state) { - state->VFP[VFP_OFFSET(VFP_FPSID)] = VFP_FPSID_IMPLMEN<<24 | VFP_FPSID_SW<<23 | VFP_FPSID_SUBARCH<<16 | - VFP_FPSID_PARTNUM<<8 | VFP_FPSID_VARIANT<<4 | VFP_FPSID_REVISION; - state->VFP[VFP_OFFSET(VFP_FPEXC)] = 0; - state->VFP[VFP_OFFSET(VFP_FPSCR)] = 0; - - //persistent_state = state; - /* Reset only specify VFP_FPEXC_EN = '0' */ - - return No_exp; + state->VFP[VFP_OFFSET(VFP_FPSID)] = VFP_FPSID_IMPLMEN<<24 | VFP_FPSID_SW<<23 | VFP_FPSID_SUBARCH<<16 | + VFP_FPSID_PARTNUM<<8 | VFP_FPSID_VARIANT<<4 | VFP_FPSID_REVISION; + state->VFP[VFP_OFFSET(VFP_FPEXC)] = 0; + state->VFP[VFP_OFFSET(VFP_FPSCR)] = 0; + + //persistent_state = state; + /* Reset only specify VFP_FPEXC_EN = '0' */ + + return 0; } unsigned -VFPMRC (ARMul_State * state, unsigned type, ARMword instr, ARMword * value) +VFPMRC (ARMul_State * state, unsigned type, u32 instr, u32 * value) { - /* MRC<c> <coproc>,<opc1>,<Rt>,<CRn>,<CRm>{,<opc2>} */ - int CoProc = BITS (8, 11); /* 10 or 11 */ - int OPC_1 = BITS (21, 23); - int Rt = BITS (12, 15); - int CRn = BITS (16, 19); - int CRm = BITS (0, 3); - int OPC_2 = BITS (5, 7); - - /* TODO check access permission */ - - /* CRn/opc1 CRm/opc2 */ - - if (CoProc == 10 || CoProc == 11) - { - #define VFP_MRC_TRANS - #include "core/arm/skyeye_common/vfp/vfpinstr.cpp" - #undef VFP_MRC_TRANS - } - DEBUG_LOG(ARM11, "Can't identify %x, CoProc %x, OPC_1 %x, Rt %x, CRn %x, CRm %x, OPC_2 %x\n", - instr, CoProc, OPC_1, Rt, CRn, CRm, OPC_2); - - return ARMul_CANT; + /* MRC<c> <coproc>,<opc1>,<Rt>,<CRn>,<CRm>{,<opc2>} */ + int CoProc = BITS (8, 11); /* 10 or 11 */ + int OPC_1 = BITS (21, 23); + int Rt = BITS (12, 15); + int CRn = BITS (16, 19); + int CRm = BITS (0, 3); + int OPC_2 = BITS (5, 7); + + /* TODO check access permission */ + + /* CRn/opc1 CRm/opc2 */ + + if (CoProc == 10 || CoProc == 11) { +#define VFP_MRC_TRANS +#include "core/arm/skyeye_common/vfp/vfpinstr.cpp" +#undef VFP_MRC_TRANS + } + DEBUG("Can't identify %x, CoProc %x, OPC_1 %x, Rt %x, CRn %x, CRm %x, OPC_2 %x\n", + instr, CoProc, OPC_1, Rt, CRn, CRm, OPC_2); + + return ARMul_CANT; } unsigned -VFPMCR (ARMul_State * state, unsigned type, ARMword instr, ARMword value) +VFPMCR (ARMul_State * state, unsigned type, u32 instr, u32 value) { - /* MCR<c> <coproc>,<opc1>,<Rt>,<CRn>,<CRm>{,<opc2>} */ - int CoProc = BITS (8, 11); /* 10 or 11 */ - int OPC_1 = BITS (21, 23); - int Rt = BITS (12, 15); - int CRn = BITS (16, 19); - int CRm = BITS (0, 3); - int OPC_2 = BITS (5, 7); - - /* TODO check access permission */ - - /* CRn/opc1 CRm/opc2 */ - if (CoProc == 10 || CoProc == 11) - { - #define VFP_MCR_TRANS - #include "core/arm/skyeye_common/vfp/vfpinstr.cpp" - #undef VFP_MCR_TRANS - } - DEBUG_LOG(ARM11, "Can't identify %x, CoProc %x, OPC_1 %x, Rt %x, CRn %x, CRm %x, OPC_2 %x\n", - instr, CoProc, OPC_1, Rt, CRn, CRm, OPC_2); - - return ARMul_CANT; + /* MCR<c> <coproc>,<opc1>,<Rt>,<CRn>,<CRm>{,<opc2>} */ + int CoProc = BITS (8, 11); /* 10 or 11 */ + int OPC_1 = BITS (21, 23); + int Rt = BITS (12, 15); + int CRn = BITS (16, 19); + int CRm = BITS (0, 3); + int OPC_2 = BITS (5, 7); + + /* TODO check access permission */ + + /* CRn/opc1 CRm/opc2 */ + if (CoProc == 10 || CoProc == 11) { +#define VFP_MCR_TRANS +#include "core/arm/skyeye_common/vfp/vfpinstr.cpp" +#undef VFP_MCR_TRANS + } + DEBUG("Can't identify %x, CoProc %x, OPC_1 %x, Rt %x, CRn %x, CRm %x, OPC_2 %x\n", + instr, CoProc, OPC_1, Rt, CRn, CRm, OPC_2); + + return ARMul_CANT; } unsigned -VFPMRRC (ARMul_State * state, unsigned type, ARMword instr, ARMword * value1, ARMword * value2) +VFPMRRC (ARMul_State * state, unsigned type, u32 instr, u32 * value1, u32 * value2) { - /* MCRR<c> <coproc>,<opc1>,<Rt>,<Rt2>,<CRm> */ - int CoProc = BITS (8, 11); /* 10 or 11 */ - int OPC_1 = BITS (4, 7); - int Rt = BITS (12, 15); - int Rt2 = BITS (16, 19); - int CRm = BITS (0, 3); - - if (CoProc == 10 || CoProc == 11) - { - #define VFP_MRRC_TRANS - #include "core/arm/skyeye_common/vfp/vfpinstr.cpp" - #undef VFP_MRRC_TRANS - } - DEBUG_LOG(ARM11, "Can't identify %x, CoProc %x, OPC_1 %x, Rt %x, Rt2 %x, CRm %x\n", - instr, CoProc, OPC_1, Rt, Rt2, CRm); - - return ARMul_CANT; + /* MCRR<c> <coproc>,<opc1>,<Rt>,<Rt2>,<CRm> */ + int CoProc = BITS (8, 11); /* 10 or 11 */ + int OPC_1 = BITS (4, 7); + int Rt = BITS (12, 15); + int Rt2 = BITS (16, 19); + int CRm = BITS (0, 3); + + if (CoProc == 10 || CoProc == 11) { +#define VFP_MRRC_TRANS +#include "core/arm/skyeye_common/vfp/vfpinstr.cpp" +#undef VFP_MRRC_TRANS + } + DEBUG("Can't identify %x, CoProc %x, OPC_1 %x, Rt %x, Rt2 %x, CRm %x\n", + instr, CoProc, OPC_1, Rt, Rt2, CRm); + + return ARMul_CANT; } unsigned -VFPMCRR (ARMul_State * state, unsigned type, ARMword instr, ARMword value1, ARMword value2) +VFPMCRR (ARMul_State * state, unsigned type, u32 instr, u32 value1, u32 value2) { - /* MCRR<c> <coproc>,<opc1>,<Rt>,<Rt2>,<CRm> */ - int CoProc = BITS (8, 11); /* 10 or 11 */ - int OPC_1 = BITS (4, 7); - int Rt = BITS (12, 15); - int Rt2 = BITS (16, 19); - int CRm = BITS (0, 3); - - /* TODO check access permission */ - - /* CRn/opc1 CRm/opc2 */ - - if (CoProc == 11 || CoProc == 10) - { - #define VFP_MCRR_TRANS - #include "core/arm/skyeye_common/vfp/vfpinstr.cpp" - #undef VFP_MCRR_TRANS - } - DEBUG_LOG(ARM11, "Can't identify %x, CoProc %x, OPC_1 %x, Rt %x, Rt2 %x, CRm %x\n", - instr, CoProc, OPC_1, Rt, Rt2, CRm); - - return ARMul_CANT; + /* MCRR<c> <coproc>,<opc1>,<Rt>,<Rt2>,<CRm> */ + int CoProc = BITS (8, 11); /* 10 or 11 */ + int OPC_1 = BITS (4, 7); + int Rt = BITS (12, 15); + int Rt2 = BITS (16, 19); + int CRm = BITS (0, 3); + + /* TODO check access permission */ + + /* CRn/opc1 CRm/opc2 */ + + if (CoProc == 11 || CoProc == 10) { +#define VFP_MCRR_TRANS +#include "core/arm/skyeye_common/vfp/vfpinstr.cpp" +#undef VFP_MCRR_TRANS + } + DEBUG("Can't identify %x, CoProc %x, OPC_1 %x, Rt %x, Rt2 %x, CRm %x\n", + instr, CoProc, OPC_1, Rt, Rt2, CRm); + + return ARMul_CANT; } unsigned -VFPSTC (ARMul_State * state, unsigned type, ARMword instr, ARMword * value) +VFPSTC (ARMul_State * state, unsigned type, u32 instr, u32 * value) { - /* STC{L}<c> <coproc>,<CRd>,[<Rn>],<option> */ - int CoProc = BITS (8, 11); /* 10 or 11 */ - int CRd = BITS (12, 15); - int Rn = BITS (16, 19); - int imm8 = BITS (0, 7); - int P = BIT(24); - int U = BIT(23); - int D = BIT(22); - int W = BIT(21); - - /* TODO check access permission */ - - /* VSTM */ - if ( (P|U|D|W) == 0 ) - { - DEBUG_LOG(ARM11, "In %s, UNDEFINED\n", __FUNCTION__); exit(-1); - } - if (CoProc == 10 || CoProc == 11) - { - #if 1 - if (P == 0 && U == 0 && W == 0) - { - DEBUG_LOG(ARM11, "VSTM Related encodings\n"); exit(-1); - } - if (P == U && W == 1) - { - DEBUG_LOG(ARM11, "UNDEFINED\n"); exit(-1); - } - #endif - - #define VFP_STC_TRANS - #include "core/arm/skyeye_common/vfp/vfpinstr.cpp" - #undef VFP_STC_TRANS - } - DEBUG_LOG(ARM11, "Can't identify %x, CoProc %x, CRd %x, Rn %x, imm8 %x, P %x, U %x, D %x, W %x\n", - instr, CoProc, CRd, Rn, imm8, P, U, D, W); - - return ARMul_CANT; + /* STC{L}<c> <coproc>,<CRd>,[<Rn>],<option> */ + int CoProc = BITS (8, 11); /* 10 or 11 */ + int CRd = BITS (12, 15); + int Rn = BITS (16, 19); + int imm8 = BITS (0, 7); + int P = BIT(24); + int U = BIT(23); + int D = BIT(22); + int W = BIT(21); + + /* TODO check access permission */ + + /* VSTM */ + if ( (P|U|D|W) == 0 ) { + DEBUG("In %s, UNDEFINED\n", __FUNCTION__); + exit(-1); + } + if (CoProc == 10 || CoProc == 11) { +#if 1 + if (P == 0 && U == 0 && W == 0) { + DEBUG("VSTM Related encodings\n"); + exit(-1); + } + if (P == U && W == 1) { + DEBUG("UNDEFINED\n"); + exit(-1); + } +#endif + +#define VFP_STC_TRANS +#include "core/arm/skyeye_common/vfp/vfpinstr.cpp" +#undef VFP_STC_TRANS + } + DEBUG("Can't identify %x, CoProc %x, CRd %x, Rn %x, imm8 %x, P %x, U %x, D %x, W %x\n", + instr, CoProc, CRd, Rn, imm8, P, U, D, W); + + return ARMul_CANT; } unsigned -VFPLDC (ARMul_State * state, unsigned type, ARMword instr, ARMword value) +VFPLDC (ARMul_State * state, unsigned type, u32 instr, u32 value) { - /* LDC{L}<c> <coproc>,<CRd>,[<Rn>] */ - int CoProc = BITS (8, 11); /* 10 or 11 */ - int CRd = BITS (12, 15); - int Rn = BITS (16, 19); - int imm8 = BITS (0, 7); - int P = BIT(24); - int U = BIT(23); - int D = BIT(22); - int W = BIT(21); - - /* TODO check access permission */ - - if ( (P|U|D|W) == 0 ) - { - DEBUG_LOG(ARM11, "In %s, UNDEFINED\n", __FUNCTION__); exit(-1); - } - if (CoProc == 10 || CoProc == 11) - { - #define VFP_LDC_TRANS - #include "core/arm/skyeye_common/vfp/vfpinstr.cpp" - #undef VFP_LDC_TRANS - } - DEBUG_LOG(ARM11, "Can't identify %x, CoProc %x, CRd %x, Rn %x, imm8 %x, P %x, U %x, D %x, W %x\n", - instr, CoProc, CRd, Rn, imm8, P, U, D, W); - - return ARMul_CANT; + /* LDC{L}<c> <coproc>,<CRd>,[<Rn>] */ + int CoProc = BITS (8, 11); /* 10 or 11 */ + int CRd = BITS (12, 15); + int Rn = BITS (16, 19); + int imm8 = BITS (0, 7); + int P = BIT(24); + int U = BIT(23); + int D = BIT(22); + int W = BIT(21); + + /* TODO check access permission */ + + if ( (P|U|D|W) == 0 ) { + DEBUG("In %s, UNDEFINED\n", __FUNCTION__); + exit(-1); + } + if (CoProc == 10 || CoProc == 11) { +#define VFP_LDC_TRANS +#include "core/arm/skyeye_common/vfp/vfpinstr.cpp" +#undef VFP_LDC_TRANS + } + DEBUG("Can't identify %x, CoProc %x, CRd %x, Rn %x, imm8 %x, P %x, U %x, D %x, W %x\n", + instr, CoProc, CRd, Rn, imm8, P, U, D, W); + + return ARMul_CANT; } unsigned -VFPCDP (ARMul_State * state, unsigned type, ARMword instr) +VFPCDP (ARMul_State * state, unsigned type, u32 instr) { - /* CDP<c> <coproc>,<opc1>,<CRd>,<CRn>,<CRm>,<opc2> */ - int CoProc = BITS (8, 11); /* 10 or 11 */ - int OPC_1 = BITS (20, 23); - int CRd = BITS (12, 15); - int CRn = BITS (16, 19); - int CRm = BITS (0, 3); - int OPC_2 = BITS (5, 7); - - /* TODO check access permission */ - - /* CRn/opc1 CRm/opc2 */ - - if (CoProc == 10 || CoProc == 11) - { - #define VFP_CDP_TRANS - #include "core/arm/skyeye_common/vfp/vfpinstr.cpp" - #undef VFP_CDP_TRANS - - int exceptions = 0; - if (CoProc == 10) - exceptions = vfp_single_cpdo(state, instr, state->VFP[VFP_OFFSET(VFP_FPSCR)]); - else - exceptions = vfp_double_cpdo(state, instr, state->VFP[VFP_OFFSET(VFP_FPSCR)]); - - vfp_raise_exceptions(state, exceptions, instr, state->VFP[VFP_OFFSET(VFP_FPSCR)]); - - return ARMul_DONE; - } - DEBUG_LOG(ARM11, "Can't identify %x\n", instr); - return ARMul_CANT; + /* CDP<c> <coproc>,<opc1>,<CRd>,<CRn>,<CRm>,<opc2> */ + int CoProc = BITS (8, 11); /* 10 or 11 */ + int OPC_1 = BITS (20, 23); + int CRd = BITS (12, 15); + int CRn = BITS (16, 19); + int CRm = BITS (0, 3); + int OPC_2 = BITS (5, 7); + + //ichfly + /*if ((instr & 0x0FBF0FD0) == 0x0EB70AC0) //vcvt.f64.f32 d8, s16 (s is bit 0-3 and LSB bit 22) (d is bit 12 - 15 MSB is Bit 6) + { + struct vfp_double vdd; + struct vfp_single vsd; + int dn = BITS(12, 15) + (BIT(22) << 4); + int sd = (BITS(0, 3) << 1) + BIT(5); + s32 n = vfp_get_float(state, sd); + vfp_single_unpack(&vsd, n); + if (vsd.exponent & 0x80) + { + vdd.exponent = (vsd.exponent&~0x80) | 0x400; + } + else + { + vdd.exponent = vsd.exponent | 0x380; + } + vdd.sign = vsd.sign; + vdd.significand = (u64)(vsd.significand & ~0xC0000000) << 32; // I have no idea why but the 2 uppern bits are not from the significand + vfp_put_double(state, vfp_double_pack(&vdd), dn); + return ARMul_DONE; + } + if ((instr & 0x0FBF0FD0) == 0x0EB70BC0) //vcvt.f32.f64 s15, d6 + { + struct vfp_double vdd; + struct vfp_single vsd; + int sd = BITS(0, 3) + (BIT(5) << 4); + int dn = (BITS(12, 15) << 1) + BIT(22); + vfp_double_unpack(&vdd, vfp_get_double(state, sd)); + if (vdd.exponent & 0x400) //todo if the exponent is to low or to high for this convert + { + vsd.exponent = (vdd.exponent) | 0x80; + } + else + { + vsd.exponent = vdd.exponent & ~0x80; + } + vsd.exponent &= 0xFF; + // vsd.exponent = vdd.exponent >> 3; + vsd.sign = vdd.sign; + vsd.significand = ((u64)(vdd.significand ) >> 32)& ~0xC0000000; + vfp_put_float(state, vfp_single_pack(&vsd), dn); + return ARMul_DONE; + }*/ + + /* TODO check access permission */ + + /* CRn/opc1 CRm/opc2 */ + + if (CoProc == 10 || CoProc == 11) { +#define VFP_CDP_TRANS +#include "core/arm/skyeye_common/vfp/vfpinstr.cpp" +#undef VFP_CDP_TRANS + + int exceptions = 0; + if (CoProc == 10) + exceptions = vfp_single_cpdo(state, instr, state->VFP[VFP_OFFSET(VFP_FPSCR)]); + else + exceptions = vfp_double_cpdo(state, instr, state->VFP[VFP_OFFSET(VFP_FPSCR)]); + + vfp_raise_exceptions(state, exceptions, instr, state->VFP[VFP_OFFSET(VFP_FPSCR)]); + + return ARMul_DONE; + } + DEBUG("Can't identify %x\n", instr); + return ARMul_CANT; } @@ -301,29 +341,29 @@ VFPCDP (ARMul_State * state, unsigned type, ARMword instr) /* Miscellaneous functions */ int32_t vfp_get_float(arm_core_t* state, unsigned int reg) { - DBG("VFP get float: s%d=[%08x]\n", reg, state->ExtReg[reg]); - return state->ExtReg[reg]; + DEBUG("VFP get float: s%d=[%08x]\n", reg, state->ExtReg[reg]); + return state->ExtReg[reg]; } void vfp_put_float(arm_core_t* state, int32_t val, unsigned int reg) { - DBG("VFP put float: s%d <= [%08x]\n", reg, val); - state->ExtReg[reg] = val; + DEBUG("VFP put float: s%d <= [%08x]\n", reg, val); + state->ExtReg[reg] = val; } uint64_t vfp_get_double(arm_core_t* state, unsigned int reg) { - uint64_t result; - result = ((uint64_t) state->ExtReg[reg*2+1])<<32 | state->ExtReg[reg*2]; - DBG("VFP get double: s[%d-%d]=[%016llx]\n", reg*2+1, reg*2, result); - return result; + uint64_t result; + result = ((uint64_t) state->ExtReg[reg*2+1])<<32 | state->ExtReg[reg*2]; + DEBUG("VFP get double: s[%d-%d]=[%016llx]\n", reg*2+1, reg*2, result); + return result; } void vfp_put_double(arm_core_t* state, uint64_t val, unsigned int reg) { - DBG("VFP put double: s[%d-%d] <= [%08x-%08x]\n", reg*2+1, reg*2, (uint32_t) (val>>32), (uint32_t) (val & 0xffffffff)); - state->ExtReg[reg*2] = (uint32_t) (val & 0xffffffff); - state->ExtReg[reg*2+1] = (uint32_t) (val>>32); + DEBUG("VFP put double: s[%d-%d] <= [%08x-%08x]\n", reg*2+1, reg*2, (uint32_t) (val>>32), (uint32_t) (val & 0xffffffff)); + state->ExtReg[reg*2] = (uint32_t) (val & 0xffffffff); + state->ExtReg[reg*2+1] = (uint32_t) (val>>32); } @@ -333,25 +373,25 @@ void vfp_put_double(arm_core_t* state, uint64_t val, unsigned int reg) */ void vfp_raise_exceptions(ARMul_State* state, u32 exceptions, u32 inst, u32 fpscr) { - int si_code = 0; + int si_code = 0; - vfpdebug("VFP: raising exceptions %08x\n", exceptions); + vfpdebug("VFP: raising exceptions %08x\n", exceptions); - if (exceptions == VFP_EXCEPTION_ERROR) { - DEBUG_LOG(ARM11, "unhandled bounce %x\n", inst); - exit(-1); - return; - } + if (exceptions == VFP_EXCEPTION_ERROR) { + DEBUG("unhandled bounce %x\n", inst); + exit(-1); + return; + } - /* - * If any of the status flags are set, update the FPSCR. - * Comparison instructions always return at least one of - * these flags set. - */ - if (exceptions & (FPSCR_N|FPSCR_Z|FPSCR_C|FPSCR_V)) - fpscr &= ~(FPSCR_N|FPSCR_Z|FPSCR_C|FPSCR_V); + /* + * If any of the status flags are set, update the FPSCR. + * Comparison instructions always return at least one of + * these flags set. + */ + if (exceptions & (FPSCR_N|FPSCR_Z|FPSCR_C|FPSCR_V)) + fpscr &= ~(FPSCR_N|FPSCR_Z|FPSCR_C|FPSCR_V); - fpscr |= exceptions; + fpscr |= exceptions; - state->VFP[VFP_OFFSET(VFP_FPSCR)] = fpscr; + state->VFP[VFP_OFFSET(VFP_FPSCR)] = fpscr; } |