ShuriZma
/
mgba
mirror of https://github.com/mgba-emu/mgba.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Implement UMLAL

This commit is contained in:
Jeffrey Pfau 2013-05-01 23:11:00 -07:00
parent cd73c562ea
commit 61c6b7186e
1 changed files with 9 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
src/arm/isa-arm.c
View File

@ -594,8 +594,15 @@ DEFINE_MULTIPLY_INSTRUCTION_ARM(SMULL,
cpu->gprs[rd] = d;
cpu->gprs[rdHi] = d >> 32;,
ARM_NEUTRAL_HI_S(cpu->gprs[rd], cpu->gprs[rdHi]))
DEFINE_INSTRUCTION_ARM(UMLAL, ARM_STUB)
DEFINE_INSTRUCTION_ARM(UMLALS, ARM_STUB)
DEFINE_MULTIPLY_INSTRUCTION_ARM(UMLAL,
uint64_t d = ((uint64_t) cpu->gprs[rm]) * ((uint64_t) cpu->gprs[rs]);
int32_t dm = cpu->gprs[rd];
int32_t dn = d;
cpu->gprs[rd] = dm + dn;
cpu->gprs[rdHi] = cpu->gprs[rdHi] + (d >> 32) + ARM_CARRY_FROM(dm, dn, cpu->gprs[rd]);,
ARM_NEUTRAL_HI_S(cpu->gprs[rd], cpu->gprs[rdHi]))
DEFINE_MULTIPLY_INSTRUCTION_ARM(UMULL,
uint64_t d = ((uint64_t) cpu->gprs[rm]) * ((uint64_t) cpu->gprs[rs]);
cpu->gprs[rd] = d;