diff --git a/src/x86_ops_shift.h b/src/x86_ops_shift.h index 1a31316..c248593 100644 --- a/src/x86_ops_shift.h +++ b/src/x86_ops_shift.h @@ -6,31 +6,20 @@ switch (rmdat & 0x38) \ { \ case 0x00: /*ROL b, c*/ \ - while (c > 0) \ - { \ - temp2 = (temp & 0x80) ? 1 : 0; \ - temp = (temp << 1) | temp2; \ - c--; \ - } \ - seteab(temp); if (cpu_state.abrt) return 1; \ - cpu_state.flags &= ~(C_FLAG | V_FLAG); \ - if (temp2) cpu_state.flags |= C_FLAG; \ - if ((cpu_state.flags & C_FLAG) ^ (temp >> 7)) cpu_state.flags |= V_FLAG; \ + temp = (temp << (c & 7)) | (temp >> (8-(c & 7))); \ + seteab(temp); if (cpu_state.abrt) return 1; \ + cpu_state.flags &= ~(C_FLAG | V_FLAG); \ + if (temp & 1) cpu_state.flags |= C_FLAG; \ + if ((temp ^ (temp >> 7)) & 1) cpu_state.flags |= V_FLAG; \ CLOCK_CYCLES((cpu_mod == 3) ? 3 : 7); \ PREFETCH_RUN((cpu_mod == 3) ? 3 : 7, 2, rmdat, (cpu_mod == 3) ? 0:1,0,(cpu_mod == 3) ? 0:1,0, ea32); \ break; \ case 0x08: /*ROR b,CL*/ \ - while (c > 0) \ - { \ - temp2 = temp & 1; \ - temp >>= 1; \ - if (temp2) temp |= 0x80; \ - c--; \ - } \ - seteab(temp); if (cpu_state.abrt) return 1; \ - cpu_state.flags &= ~(C_FLAG | V_FLAG); \ - if (temp2) cpu_state.flags |= C_FLAG; \ - if ((temp ^ (temp >> 1)) & 0x40) cpu_state.flags |= V_FLAG; \ + temp = (temp >> (c & 7)) | (temp << (8-(c & 7))); \ + seteab(temp); if (cpu_state.abrt) return 1; \ + cpu_state.flags &= ~(C_FLAG | V_FLAG); \ + if (temp & 0x80) cpu_state.flags |= C_FLAG; \ + if ((temp ^ (temp >> 1)) & 0x40) cpu_state.flags |= V_FLAG; \ CLOCK_CYCLES((cpu_mod == 3) ? 3 : 7); \ PREFETCH_RUN((cpu_mod == 3) ? 3 : 7, 2, rmdat, (cpu_mod == 3) ? 0:1,0,(cpu_mod == 3) ? 0:1,0, ea32); \ break; \ @@ -98,32 +87,21 @@ switch (rmdat & 0x38) \ { \ case 0x00: /*ROL w, c*/ \ - while (c > 0) \ - { \ - temp2 = (temp & 0x8000) ? 1 : 0; \ - temp = (temp << 1) | temp2; \ - c--; \ - } \ - seteaw(temp); if (cpu_state.abrt) return 1; \ - cpu_state.flags &= ~(C_FLAG | V_FLAG); \ - if (temp2) cpu_state.flags |= C_FLAG; \ - if ((cpu_state.flags & C_FLAG) ^ (temp >> 15)) cpu_state.flags |= V_FLAG; \ - CLOCK_CYCLES((cpu_mod == 3) ? 3 : 7); \ + temp = (temp << (c & 15)) | (temp >> (16-(c & 15))); \ + seteaw(temp); if (cpu_state.abrt) return 1; \ + cpu_state.flags &= ~(C_FLAG | V_FLAG); \ + if (temp & 1) cpu_state.flags |= C_FLAG; \ + if ((temp ^ (temp >> 15)) & 1) cpu_state.flags |= V_FLAG; \ + CLOCK_CYCLES((cpu_mod == 3) ? 3 : 7); \ PREFETCH_RUN((cpu_mod == 3) ? 3 : 7, 2, rmdat, (cpu_mod == 3) ? 0:1,0,(cpu_mod == 3) ? 0:1,0, ea32); \ break; \ - case 0x08: /*ROR w, c*/ \ - while (c > 0) \ - { \ - temp2 = temp & 1; \ - temp >>= 1; \ - if (temp2) temp |= 0x8000; \ - c--; \ - } \ - seteaw(temp); if (cpu_state.abrt) return 1; \ - cpu_state.flags &= ~(C_FLAG | V_FLAG); \ - if (temp2) cpu_state.flags |= C_FLAG; \ - if ((temp ^ (temp >> 1)) & 0x4000) cpu_state.flags |= V_FLAG; \ - CLOCK_CYCLES((cpu_mod == 3) ? 3 : 7); \ + case 0x08: /*ROR w,CL*/ \ + temp = (temp >> (c & 15)) | (temp << (16-(c & 15))); \ + seteaw(temp); if (cpu_state.abrt) return 1; \ + cpu_state.flags &= ~(C_FLAG | V_FLAG); \ + if (temp & 0x8000) cpu_state.flags |= C_FLAG; \ + if ((temp ^ (temp >> 1)) & 0x4000) cpu_state.flags |= V_FLAG; \ + CLOCK_CYCLES((cpu_mod == 3) ? 3 : 7); \ PREFETCH_RUN((cpu_mod == 3) ? 3 : 7, 2, rmdat, (cpu_mod == 3) ? 0:1,0,(cpu_mod == 3) ? 0:1,0, ea32); \ break; \ case 0x10: /*RCL w, c*/ \ @@ -190,33 +168,22 @@ switch (rmdat & 0x38) \ { \ case 0x00: /*ROL l, c*/ \ - while (c > 0) \ - { \ - temp2 = (temp & 0x80000000) ? 1 : 0; \ - temp = (temp << 1) | temp2; \ - c--; \ - } \ - seteal(temp); if (cpu_state.abrt) return 1; \ - cpu_state.flags &= ~(C_FLAG | V_FLAG); \ - if (temp2) cpu_state.flags |= C_FLAG; \ - if ((cpu_state.flags & C_FLAG) ^ (temp >> 31)) cpu_state.flags |= V_FLAG; \ - CLOCK_CYCLES((cpu_mod == 3) ? 3 : 7); \ - PREFETCH_RUN((cpu_mod == 3) ? 3 : 7, 2, rmdat, 0,(cpu_mod == 3) ? 0:1,0,(cpu_mod == 3) ? 0:1, ea32); \ + temp = (temp << c) | (temp >> (32-c)); \ + seteal(temp); if (cpu_state.abrt) return 1; \ + cpu_state.flags &= ~(C_FLAG | V_FLAG); \ + if (temp & 1) cpu_state.flags |= C_FLAG; \ + if ((temp ^ (temp >> 31)) & 1) cpu_state.flags |= V_FLAG; \ + CLOCK_CYCLES((cpu_mod == 3) ? 3 : 7); \ + PREFETCH_RUN((cpu_mod == 3) ? 3 : 7, 2, rmdat, (cpu_mod == 3) ? 0:1,0,(cpu_mod == 3) ? 0:1,0, ea32); \ break; \ - case 0x08: /*ROR l, c*/ \ - while (c > 0) \ - { \ - temp2 = temp & 1; \ - temp >>= 1; \ - if (temp2) temp |= 0x80000000; \ - c--; \ - } \ - seteal(temp); if (cpu_state.abrt) return 1; \ - cpu_state.flags &= ~(C_FLAG | V_FLAG); \ - if (temp2) cpu_state.flags |= C_FLAG; \ - if ((temp ^ (temp >> 1)) & 0x40000000) cpu_state.flags |= V_FLAG; \ - CLOCK_CYCLES((cpu_mod == 3) ? 3 : 7); \ - PREFETCH_RUN((cpu_mod == 3) ? 3 : 7, 2, rmdat, 0,(cpu_mod == 3) ? 0:1,0,(cpu_mod == 3) ? 0:1, ea32); \ + case 0x08: /*ROR l,CL*/ \ + temp = (temp >> c) | (temp << (32-c)); \ + seteal(temp); if (cpu_state.abrt) return 1; \ + cpu_state.flags &= ~(C_FLAG | V_FLAG); \ + if (temp & 0x80000000) cpu_state.flags |= C_FLAG; \ + if ((temp ^ (temp >> 1)) & 0x40000000) cpu_state.flags |= V_FLAG; \ + CLOCK_CYCLES((cpu_mod == 3) ? 3 : 7); \ + PREFETCH_RUN((cpu_mod == 3) ? 3 : 7, 2, rmdat, (cpu_mod == 3) ? 0:1,0,(cpu_mod == 3) ? 0:1,0, ea32); \ break; \ case 0x10: /*RCL l, c*/ \ temp2 = CF_SET(); \