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Patch "info fpu":

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o uses FPRi instead of ST(i)" (which was not quite right, as ST(0) was not the FPR at the TOP but alwasy fpr0).
  o shows the TOP, and the tag as {s,d,e,?}.
This commit is contained in:
Kevin Lawton 2006-01-21 00:05:30 +00:00
parent c56b918a8e
commit 88183335e9
1 changed files with 7 additions and 2 deletions
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9
bochs/fpu/fpu.cc
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@ -1,5 +1,5 @@
/////////////////////////////////////////////////////////////////////////
// $Id: fpu.cc,v 1.15 2005-08-13 17:40:41 sshwarts Exp $
// $Id: fpu.cc,v 1.16 2006-01-21 00:05:30 kevinlawton Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2003 Stanislav Shwartsman
@ -501,6 +501,7 @@ void BX_CPU_C::print_state_FPU()
fprintf(stderr, "control word: 0x%04x\n", reg);
reg = BX_CPU_THIS_PTR the_i387.get_status_word();
fprintf(stderr, "status word: 0x%04x\n", reg);
fprintf(stderr, " TOP: %d\n", FPU_TOS&7);
reg = BX_CPU_THIS_PTR the_i387.get_tag_word();
fprintf(stderr, "tag word: 0x%04x\n", reg);
reg = BX_CPU_THIS_PTR the_i387.foo;
@ -515,6 +516,7 @@ void BX_CPU_C::print_state_FPU()
fprintf(stderr, "fds: 0x%04x\n", reg);
// print stack too
int tos = FPU_TOS & 7;
for (int i=0; i<8; i++) {
const floatx80 &fp = BX_FPU_REG(i);
double f = pow(2.0, ((0x7fff & fp.exp) - 0x3fff));
@ -524,7 +526,10 @@ void BX_CPU_C::print_state_FPU()
#else
f *= fp.fraction*scale_factor;
#endif
fprintf(stderr, "st(%d): %.10f (raw 0x%04x:%08x%08x)\n", i,
fprintf(stderr, "%sFPR%d(%c): %.10f (raw 0x%04x:%08x%08x)\n",
i==tos?"=>":" ",
i,
"v0s?"[BX_CPU_THIS_PTR the_i387.FPU_gettagi((i-tos)&7)],
f, fp.exp & 0xffff, fp.fraction >> 32, fp.fraction & 0xffffffff);
}
}