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target-sparc: implement UA2005 scratchpad registers

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Signed-off-by: Artyom Tarasenko <atar4qemu@gmail.com>
This commit is contained in:
Artyom Tarasenko 2016-03-02 14:36:20 +01:00
parent e4d06ca74b
commit 4ec3e34654
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GPG Key ID: 3360C3F7411A125F
3 changed files with 26 additions and 0 deletions
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1
target/sparc/asi.h
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@ -211,6 +211,7 @@
#define ASI_AFSR 0x4c /* Async fault status register */
#define ASI_AFAR 0x4d /* Async fault address register */
#define ASI_EC_TAG_DATA 0x4e /* E-cache tag/valid ram diag acc */
#define ASI_HYP_SCRATCHPAD 0x4f /* (4V) Hypervisor scratchpad */
#define ASI_IMMU 0x50 /* Insn-MMU main register space */
#define ASI_IMMU_TSB_8KB_PTR 0x51 /* Insn-MMU 8KB TSB pointer reg */
#define ASI_IMMU_TSB_64KB_PTR 0x52 /* Insn-MMU 64KB TSB pointer reg */

1
target/sparc/cpu.h
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@ -523,6 +523,7 @@ struct CPUSPARCState {
uint32_t gl; // UA2005
/* UA 2005 hyperprivileged registers */
uint64_t hpstate, htstate[MAXTL_MAX], hintp, htba, hver, hstick_cmpr, ssr;
uint64_t scratch[8];
CPUTimer *hstick; // UA 2005
/* Interrupt vector registers */
uint64_t ivec_status;

24
target/sparc/ldst_helper.c
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@ -1351,6 +1351,18 @@ uint64_t helper_ld_asi(CPUSPARCState *env, target_ulong addr,
}
break;
}
case ASI_SCRATCHPAD: /* UA2005 privileged scratchpad */
if (unlikely((addr >= 0x20) && (addr < 0x30))) {
/* Hyperprivileged access only */
cpu_unassigned_access(cs, addr, false, false, 1, size);
}
/* fall through */
case ASI_HYP_SCRATCHPAD: /* UA2005 hyperprivileged scratchpad */
{
unsigned int i = (addr >> 3) & 0x7;
ret = env->scratch[i];
break;
}
case ASI_DCACHE_DATA: /* D-cache data */
case ASI_DCACHE_TAG: /* D-cache tag access */
case ASI_ESTATE_ERROR_EN: /* E-cache error enable */
@ -1603,6 +1615,18 @@ void helper_st_asi(CPUSPARCState *env, target_ulong addr, target_ulong val,
case ASI_INTR_RECEIVE: /* Interrupt data receive */
env->ivec_status = val & 0x20;
return;
case ASI_SCRATCHPAD: /* UA2005 privileged scratchpad */
if (unlikely((addr >= 0x20) && (addr < 0x30))) {
/* Hyperprivileged access only */
cpu_unassigned_access(cs, addr, true, false, 1, size);
}
/* fall through */
case ASI_HYP_SCRATCHPAD: /* UA2005 hyperprivileged scratchpad */
{
unsigned int i = (addr >> 3) & 0x7;
env->scratch[i] = val;
return;
}
case ASI_DCACHE_DATA: /* D-cache data */
case ASI_DCACHE_TAG: /* D-cache tag access */
case ASI_ESTATE_ERROR_EN: /* E-cache error enable */