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target-alpha: Add various symbolic constants. 

The EXC_M_* constants were being set for the EV6, not as set for
the Unix kernel entry point.

Use PS_USER_MODE instead of hard-coding access to the PS register.

Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2011-04-18 14:19:17 -07:00 committed by Richard Henderson
parent 2d9671d391
commit ea879fc719
2 changed files with 44 additions and 14 deletions
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56
target-alpha/cpu.h
View File

@ -274,11 +274,6 @@ struct CPUAlphaState {
#define cpu_gen_code cpu_alpha_gen_code
#define cpu_signal_handler cpu_alpha_signal_handler
static inline int cpu_mmu_index (CPUState *env)
{
return (env->ps >> 3) & 1;
}
#include "cpu-all.h"
enum {
@ -305,14 +300,49 @@ enum {
EXCP_STQ_C,
};
/* Arithmetic exception */
#define EXC_M_IOV (1<<16) /* Integer Overflow */
#define EXC_M_INE (1<<15) /* Inexact result */
#define EXC_M_UNF (1<<14) /* Underflow */
#define EXC_M_FOV (1<<13) /* Overflow */
#define EXC_M_DZE (1<<12) /* Division by zero */
#define EXC_M_INV (1<<11) /* Invalid operation */
#define EXC_M_SWC (1<<10) /* Software completion */
/* Hardware interrupt (entInt) constants. */
enum {
INT_K_IP,
INT_K_CLK,
INT_K_MCHK,
INT_K_DEV,
INT_K_PERF,
};
/* Memory management (entMM) constants. */
enum {
MM_K_TNV,
MM_K_ACV,
MM_K_FOR,
MM_K_FOE,
MM_K_FOW
};
/* Arithmetic exception (entArith) constants. */
enum {
EXC_M_SWC = 1, /* Software completion */
EXC_M_INV = 2, /* Invalid operation */
EXC_M_DZE = 4, /* Division by zero */
EXC_M_FOV = 8, /* Overflow */
EXC_M_UNF = 16, /* Underflow */
EXC_M_INE = 32, /* Inexact result */
EXC_M_IOV = 64 /* Integer Overflow */
};
/* Processor status constants. */
enum {
/* Low 3 bits are interrupt mask level. */
PS_INT_MASK = 7,
/* Bits 4 and 5 are the mmu mode. The VMS PALcode uses all 4 modes;
The Unix PALcode only uses bit 4. */
PS_USER_MODE = 8
};
static inline int cpu_mmu_index(CPUState *env)
{
return (env->ps & PS_USER_MODE) != 0;
}
enum {
IR_V0 = 0,

2
target-alpha/translate.c
View File

@ -3269,7 +3269,7 @@ CPUAlphaState * cpu_alpha_init (const char *cpu_model)
env->amask = amask;
#if defined (CONFIG_USER_ONLY)
env->ps = 1 << 3;
env->ps = PS_USER_MODE;
cpu_alpha_store_fpcr(env, (FPCR_INVD | FPCR_DZED | FPCR_OVFD
| FPCR_UNFD | FPCR_INED | FPCR_DNOD));
#endif