Archipelago » qemu

/*

   SPARC micro operations

   Copyright (C) 2003 Thomas M. Ogrisegg <tom@fnord.at>

   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 "exec.h"

 /*XXX*/

#define REGNAME g0

#define REG (env->gregs[0])

#include "op_template.h"

#define REGNAME g1

#define REG (env->gregs[1])

#include "op_template.h"

#define REGNAME g2

#define REG (env->gregs[2])

#include "op_template.h"

#define REGNAME g3

#define REG (env->gregs[3])

#include "op_template.h"

#define REGNAME g4

#define REG (env->gregs[4])

#include "op_template.h"

#define REGNAME g5

#define REG (env->gregs[5])

#include "op_template.h"

#define REGNAME g6

#define REG (env->gregs[6])

#include "op_template.h"

#define REGNAME g7

#define REG (env->gregs[7])

#include "op_template.h"

#define REGNAME i0

#define REG (env->regwptr[16])

#include "op_template.h"

#define REGNAME i1

#define REG (env->regwptr[17])

#include "op_template.h"

#define REGNAME i2

#define REG (env->regwptr[18])

#include "op_template.h"

#define REGNAME i3

#define REG (env->regwptr[19])

#include "op_template.h"

#define REGNAME i4

#define REG (env->regwptr[20])

#include "op_template.h"

#define REGNAME i5

#define REG (env->regwptr[21])

#include "op_template.h"

#define REGNAME i6

#define REG (env->regwptr[22])

#include "op_template.h"

#define REGNAME i7

#define REG (env->regwptr[23])

#include "op_template.h"

#define REGNAME l0

#define REG (env->regwptr[8])

#include "op_template.h"

#define REGNAME l1

#define REG (env->regwptr[9])

#include "op_template.h"

#define REGNAME l2

#define REG (env->regwptr[10])

#include "op_template.h"

#define REGNAME l3

#define REG (env->regwptr[11])

#include "op_template.h"

#define REGNAME l4

#define REG (env->regwptr[12])

#include "op_template.h"

#define REGNAME l5

#define REG (env->regwptr[13])

#include "op_template.h"

#define REGNAME l6

#define REG (env->regwptr[14])

#include "op_template.h"

#define REGNAME l7

#define REG (env->regwptr[15])

#include "op_template.h"

#define REGNAME o0

#define REG (env->regwptr[0])

#include "op_template.h"

#define REGNAME o1

#define REG (env->regwptr[1])

#include "op_template.h"

#define REGNAME o2

#define REG (env->regwptr[2])

#include "op_template.h"

#define REGNAME o3

#define REG (env->regwptr[3])

#include "op_template.h"

#define REGNAME o4

#define REG (env->regwptr[4])

#include "op_template.h"

#define REGNAME o5

#define REG (env->regwptr[5])

#include "op_template.h"

#define REGNAME o6

#define REG (env->regwptr[6])

#include "op_template.h"

#define REGNAME o7

#define REG (env->regwptr[7])

#include "op_template.h"

#define EIP (env->pc)

#define FLAG_SET(x) (env->psr&x)?1:0

void OPPROTO op_movl_T0_0(void)

{

    T0 = 0;

}

void OPPROTO op_movl_T0_1(void)

{

    T0 = 1;

}

void OPPROTO op_movl_T0_im(void)

{

    T0 = PARAM1;

}

void OPPROTO op_movl_T1_im(void)

{

    T1 = PARAM1;

}

void OPPROTO op_movl_T2_im(void)

{

    T2 = PARAM1;

}

void OPPROTO op_addl_T1_im(void)

{

    T1 += PARAM1;

}

void OPPROTO op_addl_T1_T2(void)

{

    T1 += T2;

}

void OPPROTO op_subl_T1_T2(void)

{

    T1 -= T2;

}

void OPPROTO op_add_T1_T0(void)

{

    T0 += T1;

}

void OPPROTO op_add_T1_T0_cc(void)

{

    unsigned int src1;

    src1 = T0;

    T0 += T1;

    env->psr = 0;

    if (!T0)

        env->psr |= PSR_ZERO;

    if ((int) T0 < 0)

        env->psr |= PSR_NEG;

    if (T0 < src1)

        env->psr |= PSR_CARRY;

    if (((src1 ^ T1 ^ -1) & (src1 ^ T0)) & (1 << 31))

        env->psr |= PSR_OVF;

    FORCE_RET();

}

void OPPROTO op_sub_T1_T0(void)

{

    T0 -= T1;

}

void OPPROTO op_sub_T1_T0_cc(void)

{

    unsigned int src1;

    src1 = T0;

    T0 -= T1;

    env->psr = 0;

    if (!T0)

        env->psr |= PSR_ZERO;

    if ((int) T0 < 0)

        env->psr |= PSR_NEG;

    if (src1 < T1)

        env->psr |= PSR_CARRY;

    if (((src1 ^ T1) & (src1 ^ T0)) & (1 << 31))

        env->psr |= PSR_OVF;

    FORCE_RET();

}

void OPPROTO op_and_T1_T0(void)

{

    T0 &= T1;

}

void OPPROTO op_or_T1_T0(void)

{

    T0 |= T1;

}

void OPPROTO op_xor_T1_T0(void)

{

    T0 ^= T1;

}

void OPPROTO op_andn_T1_T0(void)

{

    T0 &= ~T1;

}

void OPPROTO op_orn_T1_T0(void)

{

    T0 |= ~T1;

}

void OPPROTO op_xnor_T1_T0(void)

{

    T0 ^= ~T1;

}

void OPPROTO op_addx_T1_T0(void)

{

    T0 += T1 + ((env->psr & PSR_CARRY) ? 1 : 0);

}

void OPPROTO op_umul_T1_T0(void)

{

    uint64_t res;

    res = (uint64_t) T0 *(uint64_t) T1;

    T0 = res & 0xffffffff;

    env->y = res >> 32;

}

void OPPROTO op_smul_T1_T0(void)

{

    uint64_t res;

    res = (int64_t) ((int32_t) T0) * (int64_t) ((int32_t) T1);

    T0 = res & 0xffffffff;

    env->y = res >> 32;

}

void OPPROTO op_mulscc_T1_T0(void)

{

    unsigned int b1, C, V, b2, src1;

    C = FLAG_SET(PSR_CARRY);

    V = FLAG_SET(PSR_OVF);

    b1 = C ^ V;

    b2 = T0 & 1;

    T0 = (b1 << 31) | (T0 >> 1);

    if (!(env->y & 1))

        T1 = 0;

    /* do addition and update flags */

    src1 = T0;

    T0 += T1;

    env->psr = 0;

    if (!T0)

        env->psr |= PSR_ZERO;

    if ((int) T0 < 0)

        env->psr |= PSR_NEG;

    if (T0 < src1)

        env->psr |= PSR_CARRY;

    if (((src1 ^ T1 ^ -1) & (src1 ^ T0)) & (1 << 31))

        env->psr |= PSR_OVF;

    env->y = (b2 << 31) | (env->y >> 1);

    FORCE_RET();

}

void OPPROTO op_udiv_T1_T0(void)

{

    uint64_t x0;

    uint32_t x1;

    x0 = T0 | ((uint64_t) (env->y) << 32);

    x1 = T1;

    x0 = x0 / x1;

    if (x0 > 0xffffffff) {

        T0 = 0xffffffff;

        T1 = 1;

    } else {

        T0 = x0;

        T1 = 0;

    }

    FORCE_RET();

}

void OPPROTO op_sdiv_T1_T0(void)

{

    int64_t x0;

    int32_t x1;

    x0 = T0 | ((uint64_t) (env->y) << 32);

    x1 = T1;

    x0 = x0 / x1;

    if ((int32_t) x0 != x0) {

        T0 = x0 >> 63;

        T1 = 1;

    } else {

        T0 = x0;

        T1 = 0;

    }

    FORCE_RET();

}

void OPPROTO op_div_cc(void)

{

    env->psr = 0;

    if (!T0)

        env->psr |= PSR_ZERO;

    if ((int) T0 < 0)

        env->psr |= PSR_NEG;

    if (T1)

        env->psr |= PSR_OVF;

    FORCE_RET();

}

void OPPROTO op_subx_T1_T0(void)

{

    T0 -= T1 + ((env->psr & PSR_CARRY) ? 1 : 0);

}

void OPPROTO op_logic_T0_cc(void)

{

    env->psr = 0;

    if (!T0)

        env->psr |= PSR_ZERO;

    if ((int) T0 < 0)

        env->psr |= PSR_NEG;

    FORCE_RET();

}

void OPPROTO op_set_flags(void)

{

    env->psr = 0;

    if (!T0)

        env->psr |= PSR_ZERO;

    if ((unsigned int) T0 < (unsigned int) T1)

        env->psr |= PSR_CARRY;

    if ((int) T0 < (int) T1)

        env->psr |= PSR_OVF;

    if ((int) T0 < 0)

        env->psr |= PSR_NEG;

    FORCE_RET();

}

void OPPROTO op_sll(void)

{

    T0 <<= T1;

}

void OPPROTO op_srl(void)

{

    T0 >>= T1;

}

void OPPROTO op_sra(void)

{

    T0 = ((int32_t) T0) >> T1;

}

void OPPROTO op_st(void)

{

    stl((void *) T0, T1);

}

void OPPROTO op_stb(void)

{

    stb((void *) T0, T1);

}

void OPPROTO op_sth(void)

{

    stw((void *) T0, T1);

}

void OPPROTO op_std(void)

{

    stl((void *) T0, T1);

    stl((void *) (T0 + 4), T2);

}

void OPPROTO op_ld(void)

{

    T1 = ldl((void *) T0);

}

void OPPROTO op_ldub(void)

{

    T1 = ldub((void *) T0);

}

void OPPROTO op_lduh(void)

{

    T1 = lduw((void *) T0);

}

void OPPROTO op_ldsb(void)

{

    T1 = ldsb((void *) T0);

}

void OPPROTO op_ldsh(void)

{

    T1 = ldsw((void *) T0);

}

void OPPROTO op_ldstub(void)

{

    T1 = ldub((void *) T0);

    stb((void *) T0, 0xff);        /* XXX: Should be Atomically */

}

void OPPROTO op_swap(void)

{

    unsigned int tmp = ldl((void *) T0);

    stl((void *) T0, T1);        /* XXX: Should be Atomically */

    T1 = tmp;

}

void OPPROTO op_ldd(void)

{

    T1 = ldl((void *) T0);

    T0 = ldl((void *) (T0 + 4));

}

void OPPROTO op_wry(void)

{

    env->y = T0;

}

void OPPROTO op_rdy(void)

{

    T0 = env->y;

}

void raise_exception(int tt)

{

    env->exception_index = tt;

    cpu_loop_exit();

}   

void memcpy32(uint32_t *dst, const uint32_t *src)

{

    dst[0] = src[0];

    dst[1] = src[1];

    dst[2] = src[2];

    dst[3] = src[3];

    dst[4] = src[4];

    dst[5] = src[5];

    dst[6] = src[6];

    dst[7] = src[7];

}

static inline void set_cwp(int new_cwp)

{

    /* put the modified wrap registers at their proper location */

    if (env->cwp == (NWINDOWS - 1))

        memcpy32(env->regbase, env->regbase + NWINDOWS * 16);

    env->cwp = new_cwp;

    /* put the wrap registers at their temporary location */

    if (new_cwp == (NWINDOWS - 1))

        memcpy32(env->regbase + NWINDOWS * 16, env->regbase);

    env->regwptr = env->regbase + (new_cwp * 16);

}

/* XXX: use another pointer for %iN registers to avoid slow wrapping

   handling ? */

void OPPROTO op_save(void)

{

    int cwp;

    cwp = (env->cwp - 1) & (NWINDOWS - 1); 

    if (env->wim & (1 << cwp)) {

        raise_exception(TT_WIN_OVF);

    }

    set_cwp(cwp);

    FORCE_RET();

}

void OPPROTO op_restore(void)

{

    int cwp;

    cwp = (env->cwp + 1) & (NWINDOWS - 1); 

    if (env->wim & (1 << cwp)) {

        raise_exception(TT_WIN_UNF);

    }

    set_cwp(cwp);

    FORCE_RET();

}

void OPPROTO op_exception(void)

{

    env->exception_index = PARAM1;

    cpu_loop_exit();

}

void OPPROTO op_trap_T0(void)

{

    env->exception_index = TT_TRAP + (T0 & 0x7f);

    cpu_loop_exit();

}

void OPPROTO op_trapcc_T0(void)

{

    if (T2) {

        env->exception_index = TT_TRAP + (T0 & 0x7f);

        cpu_loop_exit();

    }

    FORCE_RET();

}

void OPPROTO op_exit_tb(void)

{

    EXIT_TB();

}

void OPPROTO op_eval_be(void)

{

    T2 = (env->psr & PSR_ZERO);

}

void OPPROTO op_eval_ble(void)

{

    unsigned int Z = FLAG_SET(PSR_ZERO), N = FLAG_SET(PSR_NEG), V = FLAG_SET(PSR_OVF);

    T2 = Z | (N ^ V);

}

void OPPROTO op_eval_bl(void)

{

    unsigned int N = FLAG_SET(PSR_NEG), V = FLAG_SET(PSR_OVF);

    T2 = N ^ V;

}

void OPPROTO op_eval_bleu(void)

{

    unsigned int Z = FLAG_SET(PSR_ZERO), C = FLAG_SET(PSR_CARRY);

    T2 = C | Z;

}

void OPPROTO op_eval_bcs(void)

{

    T2 = (env->psr & PSR_CARRY);

}

void OPPROTO op_eval_bvs(void)

{

    T2 = (env->psr & PSR_OVF);

}

void OPPROTO op_eval_bneg(void)

{

    T2 = (env->psr & PSR_NEG);

}

void OPPROTO op_eval_bne(void)

{

    T2 = !(env->psr & PSR_ZERO);

}

void OPPROTO op_eval_bg(void)

{

    unsigned int Z = FLAG_SET(PSR_ZERO), N = FLAG_SET(PSR_NEG), V = FLAG_SET(PSR_OVF);

    T2 = !(Z | (N ^ V));

}

void OPPROTO op_eval_bge(void)

{

    unsigned int N = FLAG_SET(PSR_NEG), V = FLAG_SET(PSR_OVF);

    T2 = !(N ^ V);

}

void OPPROTO op_eval_bgu(void)

{

    unsigned int Z = FLAG_SET(PSR_ZERO), C = FLAG_SET(PSR_CARRY);

    T2 = !(C | Z);

}

void OPPROTO op_eval_bcc(void)

{

    T2 = !(env->psr & PSR_CARRY);

}

void OPPROTO op_eval_bpos(void)

{

    T2 = !(env->psr & PSR_NEG);

}

void OPPROTO op_eval_bvc(void)

{

    T2 = !(env->psr & PSR_OVF);

}

void OPPROTO op_movl_T2_0(void)

{

    T2 = 0;

}

void OPPROTO op_movl_T2_1(void)

{

    T2 = 1;

}

void OPPROTO op_jmp_im(void)

{

    env->pc = PARAM1;

}

void OPPROTO op_movl_npc_im(void)

{

    env->npc = PARAM1;

}

void OPPROTO op_movl_npc_T0(void)

{

    env->npc = T0;

}

void OPPROTO op_next_insn(void)

{

    env->pc = env->npc;

    env->npc = env->npc + 4;

}

void OPPROTO op_branch(void)

{

    env->npc = PARAM3; /* XXX: optimize */

    JUMP_TB(op_branch, PARAM1, 0, PARAM2);

}

void OPPROTO op_branch2(void)

{

    if (T2) {

        env->npc = PARAM2 + 4; 

        JUMP_TB(op_branch2, PARAM1, 0, PARAM2);

    } else {

        env->npc = PARAM3 + 4; 

        JUMP_TB(op_branch2, PARAM1, 1, PARAM3);

    }

    FORCE_RET();

}

void OPPROTO op_branch_a(void)

{

    if (T2) {

        env->npc = PARAM2; /* XXX: optimize */

        JUMP_TB(op_generic_branch_a, PARAM1, 0, PARAM3);

    } else {

        env->npc = PARAM3 + 8; /* XXX: optimize */

        JUMP_TB(op_generic_branch_a, PARAM1, 1, PARAM3 + 4);

    }

    FORCE_RET();

}

void OPPROTO op_generic_branch(void)

{

    if (T2) {

        env->npc = PARAM1;

    } else {

        env->npc = PARAM2;

    }

    FORCE_RET();

}