op.c.svn-base

我们自己开发的一个OSEK操作系统！不知道可不可以？

}

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;
}

/* Load immediate.  PARAM1 is the 32 most significant bits of the value.  */
void OPPROTO op_vfp_fconstd(void)
{
    CPU_DoubleU u;
    u.l.upper = PARAM1;
    u.l.lower = 0;
    FT0d = u.d;
}

void OPPROTO op_vfp_fconsts(void)
{
    FT0s = vfp_itos(PARAM1);
}

/* Copy the most significant bit of T0 to all bits of T1.  */
void OPPROTO op_signbit_T1_T0(void)
{
    T1 = (int32_t)T0 >> 31;
}

void OPPROTO op_movl_cp_T0(void)
{
    helper_set_cp(env, PARAM1, T0);
    FORCE_RET();
}

void OPPROTO op_movl_T0_cp(void)
{
    T0 = helper_get_cp(env, PARAM1);
    FORCE_RET();
}

void OPPROTO op_movl_cp15_T0(void)
{
    helper_set_cp15(env, PARAM1, T0);
    FORCE_RET();
}

void OPPROTO op_movl_T0_cp15(void)
{
    T0 = helper_get_cp15(env, PARAM1);
    FORCE_RET();
}

/* Access to user mode registers from privileged modes.  */
void OPPROTO op_movl_T0_user(void)
{
    int regno = PARAM1;
    if (regno == 13) {
        T0 = env->banked_r13[0];
    } else if (regno == 14) {
        T0 = env->banked_r14[0];
    } else if ((env->uncached_cpsr & 0x1f) == ARM_CPU_MODE_FIQ) {
        T0 = env->usr_regs[regno - 8];
    } else {
        T0 = env->regs[regno];
    }
    FORCE_RET();
}


void OPPROTO op_movl_user_T0(void)
{
    int regno = PARAM1;
    if (regno == 13) {
        env->banked_r13[0] = T0;
    } else if (regno == 14) {
        env->banked_r14[0] = T0;
    } else if ((env->uncached_cpsr & 0x1f) == ARM_CPU_MODE_FIQ) {
        env->usr_regs[regno - 8] = T0;
    } else {
        env->regs[regno] = T0;
    }
    FORCE_RET();
}

void OPPROTO op_movl_T0_T1(void)
{
    T0 = T1;
}

void OPPROTO op_movl_T0_T2(void)
{
    T0 = T2;
}

void OPPROTO op_movl_T1_T0(void)
{
    T1 = T0;
}

void OPPROTO op_movl_T1_T2(void)
{
    T1 = T2;
}

void OPPROTO op_movl_T2_T0(void)
{
    T2 = T0;
}

/* ARMv6 Media instructions.  */

/* Note that signed overflow is undefined in C.  The following routines are
   careful to use unsigned types where modulo arithmetic is required.
   Failure to do so _will_ break on newer gcc.  */

/* Signed saturating arithmetic.  */

/* Perform 16-bit signed satruating addition.  */
static inline uint16_t add16_sat(uint16_t a, uint16_t b)
{
    uint16_t res;

    res = a + b;
    if (((res ^ a) & 0x8000) && !((a ^ b) & 0x8000)) {
        if (a & 0x8000)
            res = 0x8000;
        else
            res = 0x7fff;
    }
    return res;
}

/* Perform 8-bit signed satruating addition.  */
static inline uint8_t add8_sat(uint8_t a, uint8_t b)
{
    uint8_t res;

    res = a + b;
    if (((res ^ a) & 0x80) && !((a ^ b) & 0x80)) {
        if (a & 0x80)
            res = 0x80;
        else
            res = 0x7f;
    }
    return res;
}

/* Perform 16-bit signed satruating subtraction.  */
static inline uint16_t sub16_sat(uint16_t a, uint16_t b)
{
    uint16_t res;

    res = a - b;
    if (((res ^ a) & 0x8000) && ((a ^ b) & 0x8000)) {
        if (a & 0x8000)
            res = 0x8000;
        else
            res = 0x7fff;
    }
    return res;
}

/* Perform 8-bit signed satruating subtraction.  */
static inline uint8_t sub8_sat(uint8_t a, uint8_t b)
{
    uint8_t res;

    res = a - b;
    if (((res ^ a) & 0x80) && ((a ^ b) & 0x80)) {
        if (a & 0x80)
            res = 0x80;
        else
            res = 0x7f;
    }
    return res;
}

#define ADD16(a, b, n) RESULT(add16_sat(a, b), n, 16);
#define SUB16(a, b, n) RESULT(sub16_sat(a, b), n, 16);
#define ADD8(a, b, n)  RESULT(add8_sat(a, b), n, 8);
#define SUB8(a, b, n)  RESULT(sub8_sat(a, b), n, 8);
#define PFX q

#include "op_addsub.h"

/* Unsigned saturating arithmetic.  */
static inline uint16_t add16_usat(uint16_t a, uint8_t b)
{
    uint16_t res;
    res = a + b;
    if (res < a)
        res = 0xffff;
    return res;
}

static inline uint16_t sub16_usat(uint16_t a, uint8_t b)
{
    if (a < b)
        return a - b;
    else
        return 0;
}

static inline uint8_t add8_usat(uint8_t a, uint8_t b)
{
    uint8_t res;
    res = a + b;
    if (res < a)
        res = 0xff;
    return res;
}

static inline uint8_t sub8_usat(uint8_t a, uint8_t b)
{
    if (a < b)
        return a - b;
    else
        return 0;
}

#define ADD16(a, b, n) RESULT(add16_usat(a, b), n, 16);
#define SUB16(a, b, n) RESULT(sub16_usat(a, b), n, 16);
#define ADD8(a, b, n)  RESULT(add8_usat(a, b), n, 8);
#define SUB8(a, b, n)  RESULT(sub8_usat(a, b), n, 8);
#define PFX uq

#include "op_addsub.h"

/* Signed modulo arithmetic.  */
#define SARITH16(a, b, n, op) do { \
    int32_t sum; \
    sum = (int16_t)((uint16_t)(a) op (uint16_t)(b)); \
    RESULT(sum, n, 16); \
    if (sum >= 0) \
        ge |= 3 << (n * 2); \
    } while(0)

#define SARITH8(a, b, n, op) do { \
    int32_t sum; \
    sum = (int8_t)((uint8_t)(a) op (uint8_t)(b)); \
    RESULT(sum, n, 8); \
    if (sum >= 0) \
        ge |= 1 << n; \
    } while(0)


#define ADD16(a, b, n) SARITH16(a, b, n, +)
#define SUB16(a, b, n) SARITH16(a, b, n, -)
#define ADD8(a, b, n)  SARITH8(a, b, n, +)
#define SUB8(a, b, n)  SARITH8(a, b, n, -)
#define PFX s
#define ARITH_GE

#include "op_addsub.h"

/* Unsigned modulo arithmetic.  */
#define ADD16(a, b, n) do { \
    uint32_t sum; \
    sum = (uint32_t)(uint16_t)(a) + (uint32_t)(uint16_t)(b); \
    RESULT(sum, n, 16); \
    if ((sum >> 16) == 0) \
        ge |= 3 << (n * 2); \
    } while(0)

#define ADD8(a, b, n) do { \
    uint32_t sum; \
    sum = (uint32_t)(uint8_t)(a) + (uint32_t)(uint8_t)(b); \
    RESULT(sum, n, 8); \
    if ((sum >> 8) == 0) \
        ge |= 3 << (n * 2); \
    } while(0)

#define SUB16(a, b, n) do { \
    uint32_t sum; \
    sum = (uint32_t)(uint16_t)(a) - (uint32_t)(uint16_t)(b); \
    RESULT(sum, n, 16); \
    if ((sum >> 16) == 0) \
        ge |= 3 << (n * 2); \
    } while(0)

#define SUB8(a, b, n) do { \
    uint32_t sum; \
    sum = (uint32_t)(uint8_t)(a) - (uint32_t)(uint8_t)(b); \
    RESULT(sum, n, 8); \
    if ((sum >> 8) == 0) \
        ge |= 3 << (n * 2); \
    } while(0)

#define PFX u
#define ARITH_GE

#include "op_addsub.h"

/* Halved signed arithmetic.  */
#define ADD16(a, b, n) \
  RESULT(((int32_t)(int16_t)(a) + (int32_t)(int16_t)(b)) >> 1, n, 16)
#define SUB16(a, b, n) \
  RESULT(((int32_t)(int16_t)(a) - (int32_t)(int16_t)(b)) >> 1, n, 16)
#define ADD8(a, b, n) \
  RESULT(((int32_t)(int8_t)(a) + (int32_t)(int8_t)(b)) >> 1, n, 8)
#define SUB8(a, b, n) \
  RESULT(((int32_t)(int8_t)(a) - (int32_t)(int8_t)(b)) >> 1, n, 8)
#define PFX sh

#include "op_addsub.h"

/* Halved unsigned arithmetic.  */
#define ADD16(a, b, n) \
  RESULT(((uint32_t)(uint16_t)(a) + (uint32_t)(uint16_t)(b)) >> 1, n, 16)
#define SUB16(a, b, n) \
  RESULT(((uint32_t)(uint16_t)(a) - (uint32_t)(uint16_t)(b)) >> 1, n, 16)
#define ADD8(a, b, n) \
  RESULT(((uint32_t)(uint8_t)(a) + (uint32_t)(uint8_t)(b)) >> 1, n, 8)
#define SUB8(a, b, n) \
  RESULT(((uint32_t)(uint8_t)(a) - (uint32_t)(uint8_t)(b)) >> 1, n, 8)
#define PFX uh

#include "op_addsub.h"

void OPPROTO op_pkhtb_T0_T1(void)
{
    T0 = (T0 & 0xffff0000) | (T1 & 0xffff);
}

void OPPROTO op_pkhbt_T0_T1(void)
{
    T0 = (T0 & 0xffff) | (T1 & 0xffff0000);
}
void OPPROTO op_rev_T0(void)
{
    T0 =  ((T0 & 0xff000000) >> 24)
        | ((T0 & 0x00ff0000) >> 8)
        | ((T0 & 0x0000ff00) << 8)
        | ((T0 & 0x000000ff) << 24);
}

void OPPROTO op_revh_T0(void)
{
    T0 = (T0 >> 16) | (T0 << 16);
}

void OPPROTO op_rev16_T0(void)
{
    T0 =  ((T0 & 0xff000000) >> 8)
        | ((T0 & 0x00ff0000) << 8)
        | ((T0 & 0x0000ff00) >> 8)
        | ((T0 & 0x000000ff) << 8);
}

void OPPROTO op_revsh_T0(void)
{
    T0 = (int16_t)(  ((T0 & 0x0000ff00) >> 8)
                   | ((T0 & 0x000000ff) << 8));
}

void OPPROTO op_rbit_T0(void)
{
    T0 =  ((T0 & 0xff000000) >> 24)
        | ((T0 & 0x00ff0000) >> 8)
        | ((T0 & 0x0000ff00) << 8)
        | ((T0 & 0x000000ff) << 24);
    T0 =  ((T0 & 0xf0f0f0f0) >> 4)
        | ((T0 & 0x0f0f0f0f) << 4);
    T0 =  ((T0 & 0x88888888) >> 3)
        | ((T0 & 0x44444444) >> 1)
        | ((T0 & 0x22222222) << 1)
        | ((T0 & 0x11111111) << 3);
}

/* Swap low and high halfwords.  */
void OPPROTO op_swap_half_T1(void)
{
    T1 = (T1 >> 16) | (T1 << 16);
    FORCE_RET();
}

/* Dual 16-bit signed multiply.  */
void OPPROTO op_mul_dual_T0_T1(void)
{
    int32_t low;
    int32_t high;
    low = (int32_t)(int16_t)T0 * (int32_t)(int16_t)T1;
    high = (((int32_t)T0) >> 16) * (((int32_t)T1) >> 16);
    T0 = low;
    T1 = high;
}

void OPPROTO op_sel_T0_T1(void)
{
    uint32_t mask;
    uint32_t flags;

    flags = env->GE;
    mask = 0;
    if (flags & 1)
        mask |= 0xff;
    if (flags & 2)
        mask |= 0xff00;
    if (flags & 4)
        mask |= 0xff0000;
    if (flags & 8)
        mask |= 0xff000000;
    T0 = (T0 & mask) | (T1 & ~mask);
    FORCE_RET();
}

void OPPROTO op_roundqd_T0_T1(void)
{
    T0 = T1 + ((uint32_t)T0 >> 31);
}

/* Signed saturation.  */
static inline uint32_t do_ssat(int32_t val, int shift)
{
    int32_t top;
    uint32_t mask;

    shift = PARAM1;
    top = val >> shift;
    mask = (1u << shift) - 1;
    if (top > 0) {
        env->QF = 1;
        return mask;
    } else if (top < -1) {
        env->QF = 1;
        return ~mask;
    }
    return val;
}

/* Unsigned saturation.  */
static inline uint32_t do_usat(int32_t val, int shift)
{
    uint32_t max;

    shift = PARAM1;
    max = (1u << shift) - 1;
    if (val < 0) {
        env->QF = 1;
        return 0;
    } else if (val > max) {
        env->QF = 1;
        return max;
    }
    return val;
}

/* Signed saturate.  */
void OPPROTO op_ssat_T1(void)
{
    T0 = do_ssat(T0, PARAM1);
    FORCE_RET();
}

/* Dual halfword signed saturate.  */
void OPPROTO op_ssat16_T1(void)
{
    uint32_t res;

    res = (uint16_t)do_ssat((int16_t)T0, PARAM1);
    res |= do_ssat(((int32_t)T0) >> 16, PARAM1) << 16;
    T0 = res;
    FORCE_RET();
}

/* Unsigned saturate.  */
void OPPROTO op_usat_T1(void)
{
    T0 = do_usat(T0, PARAM1);
    FORCE_RET();
}

/* Dual halfword unsigned saturate.  */
void OPPROTO op_usat16_T1(void)
{
    uint32_t res;

    res = (uint16_t)do_usat((int16_t)T0, PARAM1);
    res |= do_usat(((int32_t)T0) >> 16, PARAM1) << 16;
    T0 = res;
    FORCE_RET();
}

/* Dual 16-bit add.  */
void OPPROTO op_add16_T1_T2(void)
{
    uint32_t mask;
    mask = (T0 & T1) & 0x8000;
    T0 ^= ~0x8000;
    T1 ^= ~0x8000;
    T0 = (T0 + T1) ^ mask;
}

static inline uint8_t do_usad(uint8_t a, uint8_t b)
{
    if (a > b)
        return a - b;
    else
        return b - a;
}

/* Unsigned sum of absolute byte differences.  */
void OPPROTO op_usad8_T0_T1(void)
{
    uint32_t sum;
    sum = do_usad(T0, T1);
    sum += do_usad(T0 >> 8, T1 >> 8);
    sum += do_usad(T0 >> 16, T1 >>16);
    sum += do_usad(T0 >> 24, T1 >> 24);
    T0 = sum;
}

/* Thumb-2 instructions.  */

/* Insert T1 into T0.  Result goes in T1.  */
void OPPROTO op_bfi_T1_T0(void)
{
    int shift = PARAM1;
    uint32_t mask = PARAM2;
    uint32_t bits;

    bits = (T1 << shift) & mask;
    T1 = (T0 & ~mask) | bits;
}

/* Unsigned bitfield extract.  */
void OPPROTO op_ubfx_T1(void)
{
    uint32_t shift = PARAM1;
    uint32_t mask = PARAM2;

    T1 >>= shift;
    T1 &= mask;
}

/* Signed bitfield extract.  */
void OPPROTO op_sbfx_T1(void)
{
    uint32_t shift = PARAM1;
    uint32_t width = PARAM2;
    int32_t val;

    val = T1 << (32 - (shift + width));
    T1 = val >> (32 - width);
}

void OPPROTO op_movtop_T0_im(void)
{
    T0 = (T0 & 0xffff) | PARAM1;
}

/* Used by table branch instructions.  */
void OPPROTO op_jmp_T0_im(void)
{
    env->regs[15] = PARAM1 + (T0 << 1);
}

void OPPROTO op_set_condexec(void)
{
    env->condexec_bits = PARAM1;
}

void OPPROTO op_sdivl_T0_T1(void)
{
  int32_t num;
  int32_t den;
  num = T0;
  den = T1;
  if (den == 0)
    T0 = 0;
  else
    T0 = num / den;
  FORCE_RET();
}

void OPPROTO op_udivl_T0_T1(void)
{
  uint32_t num;
  uint32_t den;
  num = T0;
  den = T1;
  if (den == 0)
    T0 = 0;
  else
    T0 = num / den;
  FORCE_RET();
}

void OPPROTO op_movl_T1_r13_banked(void)
{
    T1 = helper_get_r13_banked(env, PARAM1);
}

void OPPROTO op_movl_r13_T1_banked(void)
{
    helper_set_r13_banked(env, PARAM1, T1);
}

void OPPROTO op_v7m_mrs_T0(void)
{
    T0 = helper_v7m_mrs(env, PARAM1);
}

void OPPROTO op_v7m_msr_T0(void)
{
    helper_v7m_msr(env, PARAM1, T0);
}

void OPPROTO op_movl_T0_sp(void)
{
    if (PARAM1 == env->v7m.current_sp)
        T0 = env->regs[13];
    else
        T0 = env->v7m.other_sp;
    FORCE_RET();
}

#include "op_neon.h"

/* iwMMXt support */
#include "op_iwmmxt.c"