haraldwolff/qemu-patch-raspberry4
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Fix FPA condition codes (Ulrich Hecht).

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1784 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
pbrook 2006-03-11 21:03:16 +00:00
parent b55669bf57
commit 19b045dec9
3 changed files with 11 additions and 25 deletions
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2
linux-user/main.c
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@ -345,7 +345,7 @@ void cpu_loop(CPUARMState *env)
/* we get the opcode */
opcode = ldl_raw((uint8_t *)env->regs[15]);
if (EmulateAll(opcode, &ts->fpa, env->regs) == 0) {
if (EmulateAll(opcode, &ts->fpa, env) == 0) {
info.si_signo = SIGILL;
info.si_errno = 0;
info.si_code = TARGET_ILL_ILLOPN;

5
target-arm/nwfpe/fpa11.c
View file

@ -36,7 +36,7 @@ unsigned int EmulateCPDT(const unsigned int);
unsigned int EmulateCPRT(const unsigned int);
FPA11* qemufpa=0;
unsigned int* user_registers=0;
CPUARMState* user_registers;
/* Reset the FPA11 chip. Called to initialize and reset the emulator. */
void resetFPA11(void)
@ -137,7 +137,8 @@ void SetRoundingPrecision(const unsigned int opcode)
}
/* Emulate the instruction in the opcode. */
unsigned int EmulateAll(unsigned int opcode, FPA11* qfpa, unsigned int* qregs)
/* ??? This is not thread safe. */
unsigned int EmulateAll(unsigned int opcode, FPA11* qfpa, CPUARMState* qregs)
{
unsigned int nRc = 0;
// unsigned long flags;

29
target-arm/nwfpe/fpa11.h
View file

@ -26,6 +26,8 @@
#include <stdio.h>
#include <errno.h>
#include <cpu.h>
#define GET_FPA11() (qemufpa)
/*
@ -33,7 +35,7 @@
* stack+task struct. Use the same method as 'current' uses to
* reach them.
*/
extern unsigned int *user_registers;
extern CPUARMState *user_registers;
#define GET_USERREG() (user_registers)
@ -94,7 +96,7 @@ extern void SetRoundingPrecision(const unsigned int);
static inline unsigned int readRegister(unsigned int reg)
{
return (user_registers[(reg)]);
return (user_registers->regs[(reg)]);
}
static inline void writeRegister(unsigned int x, unsigned int y)
@ -102,34 +104,17 @@ static inline void writeRegister(unsigned int x, unsigned int y)
#if 0
printf("writing %d to r%d\n",y,x);
#endif
user_registers[(x)]=(y);
user_registers->regs[(x)]=(y);
}
static inline void writeConditionCodes(unsigned int x)
{
#if 0
unsigned int y;
unsigned int ZF;
printf("setting flags to %x from %x\n",x,user_registers[16]);
#endif
user_registers[16]=(x); // cpsr
user_registers[17]=(x>>29)&1; // cf
user_registers[18]=(x<<3)&(1<<31); // vf
user_registers[19]=x&(1<<31); // nzf
if(!(x&(1<<30))) user_registers[19]++; // nzf must be non-zero for zf to be cleared
#if 0
ZF = (user_registers[19] == 0);
y=user_registers[16] | (user_registers[19] & 0x80000000) | (ZF << 30) |
(user_registers[17] << 29) | ((user_registers[18] & 0x80000000) >> 3);
if(y != x)
printf("GODDAM SHIIIIIIIIIIIIIIIIT! %x %x nzf %x zf %x\n",x,y,user_registers[19],ZF);
#endif
cpsr_write(user_registers,x,CPSR_NZCV);
}
#define REG_PC 15
unsigned int EmulateAll(unsigned int opcode, FPA11* qfpa, unsigned int* qregs);
unsigned int EmulateAll(unsigned int opcode, FPA11* qfpa, CPUARMState* qregs);
/* included only for get_user/put_user macros */
#include "qemu.h"