* simops.c (call:16 call:32): Stack adjustment is determined solely

by the imm8 field.
This commit is contained in:
Jeff Law 1997-11-11 17:37:04 +00:00
parent a94c5493a7
commit fc615b0b1e
1 changed files with 8 additions and 4 deletions

View File

@ -2586,8 +2586,10 @@ void OP_CD000000 (insn, extension)
sp -= 4;
}
/* Update the stack pointer. */
State.regs[REG_SP] = sp - extension;
/* Update the stack pointer, note that the register saves to do not
modify SP. The SP adjustment is derived totally from the imm8
field. */
State.regs[REG_SP] -= extension;
State.regs[REG_MDR] = next_pc;
State.regs[REG_PC] += SEXT16 ((insn & 0xffff00) >> 8) - 5;
}
@ -2651,8 +2653,10 @@ void OP_DD000000 (insn, extension)
sp -= 4;
}
/* Update the stack pointer. */
State.regs[REG_SP] = sp - (extension & 0xff);
/* Update the stack pointer, note that the register saves to do not
modify SP. The SP adjustment is derived totally from the imm8
field. */
State.regs[REG_SP] -= (extension & 0xff);
State.regs[REG_MDR] = next_pc;
State.regs[REG_PC] += (((insn & 0xffffff) << 8) | ((extension & 0xff0000) >> 16)) - 7;
}