OpenE2K/binutils-gdb
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* simops.c: Fix restoring the PC for "ret" and "retf" instructions.

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This commit is contained in:
Jeff Law 1996-12-16 17:08:10 +00:00
parent 868c351306
commit 16d2e2b670
2 changed files with 23 additions and 4 deletions
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11
sim/mn10300/ChangeLog
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@ -1,3 +1,14 @@
Mon Dec 16 10:03:52 1996 Jeffrey A Law (law@cygnus.com)
* simops.c: Fix restoring the PC for "ret" and "retf" instructions.
Wed Dec 11 09:53:10 1996 Jeffrey A Law (law@cygnus.com)
* gencode.c (write_opcodes): Also write out the format of the
opcode.
* mn10300_sim.h (simops): Add "format" field.
* interp.c (sim_resume): Deal with endianness issues here.
Tue Dec 10 15:05:37 1996 Jeffrey A Law (law@cygnus.com)
* simops.c (REG0_4): Define.

16
sim/mn10300/simops.c
View File

@ -2690,7 +2690,6 @@ void OP_DF0000 (insn, extension)
unsigned long mask;
State.regs[REG_SP] += insn & 0xff;
State.pc = State.regs[REG_MDR] - 3;
sp = State.regs[REG_SP];
mask = (insn & 0xff00) >> 8;
@ -2737,6 +2736,14 @@ void OP_DF0000 (insn, extension)
State.regs[REG_D0 + 2] = load_mem (sp, 4);
sp += 4;
}
/* And make sure to update the stack pointer. */
State.regs[REG_SP] = sp;
/* Restore the PC value. */
State.pc = (State.mem[sp] | (State.mem[sp+1] << 8)
| (State.mem[sp+2] << 16) | (State.mem[sp+3] << 24));
State.pc -= 3;
}
/* retf reg_list,imm8 */
@ -2748,9 +2755,7 @@ void OP_DE0000 (insn, extension)
sp = State.regs[REG_SP] + (insn & 0xff);
State.regs[REG_SP] = sp;
State.pc = (State.mem[sp] | (State.mem[sp+1] << 8)
| (State.mem[sp+2] << 16) | (State.mem[sp+3] << 24));
State.pc -= 3;
State.pc = State.regs[REG_MDR] - 3;
sp = State.regs[REG_SP];
@ -2798,6 +2803,9 @@ void OP_DE0000 (insn, extension)
State.regs[REG_D0 + 2] = load_mem (sp, 4);
sp += 4;
}
/* And make sure to update the stack pointer. */
State.regs[REG_SP] = sp;
}
/* rets */