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Turns out I was returning values from syscalls in the wrong register; fixed.

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More tests pass.
This commit is contained in:
David Given 2018-06-17 10:22:20 +02:00
parent ab660a44e9
commit 78eaf836be
2 changed files with 9 additions and 9 deletions
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6
plat/linuxppc/emu/emu.c
View file

@ -303,7 +303,7 @@ void dump_state(FILE* stream)
int i;
fprintf(stream, "\n");
fprintf(stream, "pc=0x%08x lr=0x%08x ctr=0x%08x xer=0x%08x cr=0x%08x\n",
fprintf(stream, "pc=0x%08x lr=0x%08x ctr=0x%08x xer=0x%08x cr=0x%08x",
cpu.cia, cpu.lr, cpu.ctr, cpu.xer, cpu.cr);
for (i=0; i<32; i++)
{
@ -311,11 +311,11 @@ void dump_state(FILE* stream)
fprintf(stream, "\n");
fprintf(stream, "gpr%02d=0x%08x ", i, cpu.gpr[i]);
}
fprintf(stream, "\n");
fprintf(stderr, "\n");
/* This might fail and cause a reentrant trap if cia is invalid, so
* do it last. */
fprintf(stream, "insn=0x%08x", read_long(cpu.cia));
fprintf(stream, "insn=0x%08x\n", read_long(cpu.cia));
}
void single_step(void)

12
plat/linuxppc/emu/main.c
View file

@ -136,8 +136,8 @@ void system_call(uint8_t trapno)
uint32_t len = cpu.gpr[5];
void* ptr = ram + transform_address(address);
transform_address(address+len); /* bounds check */
cpu.gpr[4] = write(fd, ptr, len);
if (cpu.gpr[4] == -1)
cpu.gpr[3] = write(fd, ptr, len);
if (cpu.gpr[3] == -1)
goto error;
break;
}
@ -146,13 +146,13 @@ void system_call(uint8_t trapno)
{
uint32_t newpos = cpu.gpr[3];
if (newpos == 0)
cpu.gpr[4] = brkpos;
cpu.gpr[3] = brkpos;
else if ((newpos < brkbase) || (newpos >= BRK_TOP))
cpu.gpr[4] = -ENOMEM;
cpu.gpr[3] = -ENOMEM;
else
{
brkpos = newpos;
cpu.gpr[4] = 0;
cpu.gpr[3] = 0;
}
break;
}
@ -163,7 +163,7 @@ void system_call(uint8_t trapno)
case 67: /* sigaction */
case 78: /* gettimeofday */
case 126: /* sigprocmask */
cpu.gpr[4] = 0;
cpu.gpr[3] = 0;
break;
error: