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JIT: 

- fix bug in SMULW/SMLAW instructions on x86;
This commit is contained in:
mtabachenko 2012-12-09 09:38:45 +00:00
parent b66bbd5654
commit 27d4d5f92b
1 changed files with 17 additions and 1 deletions
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18
desmume/src/arm_jit.cpp
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@ -257,7 +257,6 @@ static GPVar total_cycles;
#ifndef ASMJIT_X64
#define r64 r32
#define movsxd movsx
#endif
// sequencer.reschedule = true;
@ -1295,6 +1294,7 @@ static int OP_SMLAL_T_T(const u32 i) { OP_MULxy_(c.imul(hi,lhs,rhs), H, H, 1, 1,
//-----------------------------------------------------------------------------
// SMULW / SMLAW
//-----------------------------------------------------------------------------
#ifdef ASMJIT_X64
#define OP_SMxxW_(x, accum, flags) \
GPVar lhs = c.newGP(VARIABLE_TYPE_GPN); \
GPVar rhs = c.newGP(VARIABLE_TYPE_GPN); \
@ -1306,6 +1306,22 @@ static int OP_SMLAL_T_T(const u32 i) { OP_MULxy_(c.imul(hi,lhs,rhs), H, H, 1, 1,
c.mov(reg_pos_ptr(16), lhs.r32()); \
if (flags) { SET_Q; } \
return 1;
#else
#define OP_SMxxW_(x, accum, flags) \
GPVar lhs = c.newGP(VARIABLE_TYPE_GPD); \
GPVar rhs = c.newGP(VARIABLE_TYPE_GPD); \
GPVar hi = c.newGP(VARIABLE_TYPE_GPD); \
c.movsx(lhs, reg_pos_ptr##x(8)); \
c.mov(rhs, reg_pos_ptr(0)); \
c.imul(hi, lhs, rhs); \
c.shr(lhs, 16); \
c.shl(hi, 16); \
c.or_(lhs, hi); \
if (accum) c.add(lhs, reg_pos_ptr(12)); \
c.mov(reg_pos_ptr(16), lhs); \
if (flags) { SET_Q; } \
return 1;
#endif
static int OP_SMULW_B(const u32 i) { OP_SMxxW_(L, 0, 0); }
static int OP_SMULW_T(const u32 i) { OP_SMxxW_(H, 0, 0); }