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* simops.c: "call" stores the callee saved registers into the

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stack!  Update the stack pointer properly when done with
        register saves.
This commit is contained in:
Jeff Law 1997-06-10 22:59:13 +00:00
parent 601acd6158
commit dbdb5bd881
2 changed files with 55 additions and 53 deletions
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4
sim/mn10300/ChangeLog
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@ -1,5 +1,9 @@
Tue Jun 10 12:31:32 1997 Jeffrey A Law (law@cygnus.com) Tue Jun 10 12:31:32 1997 Jeffrey A Law (law@cygnus.com)
* simops.c: "call" stores the callee saved registers into the
stack! Update the stack pointer properly when done with
register saves.
* simops.c: Fix return address computation for "call" instructions. * simops.c: Fix return address computation for "call" instructions.
Thu May 22 01:43:11 1997 Jeffrey A Law (law@cygnus.com) Thu May 22 01:43:11 1997 Jeffrey A Law (law@cygnus.com)

104
sim/mn10300/simops.c
View file

@ -2531,7 +2531,7 @@ void OP_DC000000 (insn, extension)
void OP_CD000000 (insn, extension) void OP_CD000000 (insn, extension)
unsigned long insn, extension; unsigned long insn, extension;
{ {
unsigned int next_pc, sp, adjust; unsigned int next_pc, sp;
unsigned long mask; unsigned long mask;
sp = State.regs[REG_SP]; sp = State.regs[REG_SP];
@ -2543,52 +2543,51 @@ void OP_CD000000 (insn, extension)
mask = insn & 0xff; mask = insn & 0xff;
adjust = 0;
if (mask & 0x80) if (mask & 0x80)
{ {
adjust -= 4; sp -= 4;
State.regs[REG_D0 + 2] = load_word (sp + adjust); store_word (sp, State.regs[REG_D0 + 2]);
} }
if (mask & 0x40) if (mask & 0x40)
{ {
adjust -= 4; sp -= 4;
State.regs[REG_D0 + 3] = load_word (sp + adjust); store_word (sp, State.regs[REG_D0 + 3]);
} }
if (mask & 0x20) if (mask & 0x20)
{ {
adjust -= 4; sp -= 4;
State.regs[REG_A0 + 2] = load_word (sp + adjust); store_word (sp, State.regs[REG_A0 + 2]);
} }
if (mask & 0x10) if (mask & 0x10)
{ {
adjust -= 4; sp -= 4;
State.regs[REG_A0 + 3] = load_word (sp + adjust); store_word (sp, State.regs[REG_A0 + 3]);
} }
if (mask & 0x8) if (mask & 0x8)
{ {
adjust -= 4; sp -= 4;
State.regs[REG_D0] = load_word (sp + adjust); store_word (sp, State.regs[REG_D0]);
adjust -= 4; sp -= 4;
State.regs[REG_D0 + 1] = load_word (sp + adjust); store_word (sp, State.regs[REG_D0 + 1]);
adjust -= 4; sp -= 4;
State.regs[REG_A0] = load_word (sp + adjust); store_word (sp, State.regs[REG_A0]);
adjust -= 4; sp -= 4;
State.regs[REG_A0 + 1] = load_word (sp + adjust); store_word (sp, State.regs[REG_A0 + 1]);
adjust -= 4; sp -= 4;
State.regs[REG_MDR] = load_word (sp + adjust); store_word (sp, State.regs[REG_MDR]);
adjust -= 4; sp -= 4;
State.regs[REG_LIR] = load_word (sp + adjust); store_word (sp, State.regs[REG_LIR]);
adjust -= 4; sp -= 4;
State.regs[REG_LAR] = load_word (sp + adjust); store_word (sp, State.regs[REG_LAR]);
adjust -= 4; sp -= 4;
} }
/* And make sure to update the stack pointer. */ /* Update the stack pointer. */
State.regs[REG_SP] -= extension; State.regs[REG_SP] = sp - extension;
State.regs[REG_MDR] = next_pc; State.regs[REG_MDR] = next_pc;
State.regs[REG_PC] += SEXT16 ((insn & 0xffff00) >> 8) - 5; State.regs[REG_PC] += SEXT16 ((insn & 0xffff00) >> 8) - 5;
} }
@ -2609,52 +2608,51 @@ void OP_DD000000 (insn, extension)
mask = (extension & 0xff00) >> 8; mask = (extension & 0xff00) >> 8;
adjust = 0;
if (mask & 0x80) if (mask & 0x80)
{ {
adjust -= 4; sp -= 4;
State.regs[REG_D0 + 2] = load_word (sp + adjust); store_word (sp, State.regs[REG_D0 + 2]);
} }
if (mask & 0x40) if (mask & 0x40)
{ {
adjust -= 4; sp -= 4;
State.regs[REG_D0 + 3] = load_word (sp + adjust); store_word (sp, State.regs[REG_D0 + 3]);
} }
if (mask & 0x20) if (mask & 0x20)
{ {
adjust -= 4; sp -= 4;
State.regs[REG_A0 + 2] = load_word (sp + adjust); store_word (sp, State.regs[REG_A0 + 2]);
} }
if (mask & 0x10) if (mask & 0x10)
{ {
adjust -= 4; sp -= 4;
State.regs[REG_A0 + 3] = load_word (sp + adjust); store_word (sp, State.regs[REG_A0 + 3]);
} }
if (mask & 0x8) if (mask & 0x8)
{ {
adjust -= 4; sp -= 4;
State.regs[REG_D0] = load_word (sp + adjust); store_word (sp, State.regs[REG_D0]);
adjust -= 4; sp -= 4;
State.regs[REG_D0 + 1] = load_word (sp + adjust); store_word (sp, State.regs[REG_D0 + 1]);
adjust -= 4; sp -= 4;
State.regs[REG_A0] = load_word (sp + adjust); store_word (sp, State.regs[REG_A0]);
adjust -= 4; sp -= 4;
State.regs[REG_A0 + 1] = load_word (sp + adjust); store_word (sp, State.regs[REG_A0 + 1]);
adjust -= 4; sp -= 4;
State.regs[REG_MDR] = load_word (sp + adjust); store_word (sp, State.regs[REG_MDR]);
adjust -= 4; sp -= 4;
State.regs[REG_LIR] = load_word (sp + adjust); store_word (sp, State.regs[REG_LIR]);
adjust -= 4; sp -= 4;
State.regs[REG_LAR] = load_word (sp + adjust); store_word (sp, State.regs[REG_LAR]);
adjust -= 4; sp -= 4;
} }
/* And make sure to update the stack pointer. */ /* Update the stack pointer. */
State.regs[REG_SP] -= (extension & 0xff); State.regs[REG_SP] = sp - extension;
State.regs[REG_MDR] = next_pc; State.regs[REG_MDR] = next_pc;
State.regs[REG_PC] += (((insn & 0xffffff) << 8) | ((extension & 0xff0000) >> 16)) - 7; State.regs[REG_PC] += (((insn & 0xffffff) << 8) | ((extension & 0xff0000) >> 16)) - 7;
} }