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fgetenv / fsetenv

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This commit is contained in:
Kelvin Sherlock 2014-12-14 19:52:49 -05:00
parent 294a0c901b
commit 80be590e76
1 changed files with 38 additions and 1 deletions
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39
toolbox/sane.cpp
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@ -47,6 +47,11 @@ namespace SANE
using std::to_string;
namespace {
uint16_t Environment = 0;
}
// long double is an 80-bit extended with an extra 48-bits of 0 padding.
typedef long double extended;
@ -667,6 +672,36 @@ using std::to_string;
return 0;
}
#pragma mark - environment
uint16_t fgetenv(void)
{
uint32_t address;
uint16_t op;
StackFrame<6>(address, op);
Log(" FGETENV(%08x)\n", address);
memoryWriteWord(Environment, address);
return 0;
}
uint16_t fsetenv(void)
{
uint32_t address;
uint16_t value;
uint16_t op;
StackFrame<6>(address, op);
value = memoryReadWord(address);
Log(" FSETENV(%08x (%04x))\n", address, value);
Environment = value;
return 0;
}
extern "C" void cpuSetFlagsAbs(UWO f);
uint16_t fp68k(uint16_t trap)
@ -677,7 +712,7 @@ using std::to_string;
sp = cpuGetAReg(7);
op = memoryReadWord(sp);
Log("%04x FP68K(%04x)\n", op);
Log("%04x FP68K(%04x)\n", trap, op);
cpuSetFlagsAbs(0x4);
@ -756,6 +791,8 @@ using std::to_string;
break;
case 0x0003: return fgetenv();
case 0x0001: return fsetenv();
}