diff options
Diffstat (limited to 'target/ppc/cpu.c')
| -rw-r--r-- | target/ppc/cpu.c | 68 |
1 files changed, 64 insertions, 4 deletions
diff --git a/target/ppc/cpu.c b/target/ppc/cpu.c index d957d1a687..19d67b5b07 100644 --- a/target/ppc/cpu.c +++ b/target/ppc/cpu.c @@ -24,6 +24,8 @@ #include "exec/log.h" #include "fpu/softfloat-helpers.h" #include "mmu-hash64.h" +#include "helper_regs.h" +#include "sysemu/tcg.h" target_ulong cpu_read_xer(CPUPPCState *env) { @@ -77,13 +79,13 @@ void ppc_store_sdr1(CPUPPCState *env, target_ulong value) target_ulong htabsize = value & SDR_64_HTABSIZE; if (value & ~sdr_mask) { - error_report("Invalid bits 0x"TARGET_FMT_lx" set in SDR1", - value & ~sdr_mask); + qemu_log_mask(LOG_GUEST_ERROR, "Invalid bits 0x"TARGET_FMT_lx + " set in SDR1", value & ~sdr_mask); value &= sdr_mask; } if (htabsize > 28) { - error_report("Invalid HTABSIZE 0x" TARGET_FMT_lx" stored in SDR1", - htabsize); + qemu_log_mask(LOG_GUEST_ERROR, "Invalid HTABSIZE 0x" TARGET_FMT_lx + " stored in SDR1", htabsize); return; } } @@ -92,3 +94,61 @@ void ppc_store_sdr1(CPUPPCState *env, target_ulong value) env->spr[SPR_SDR1] = value; } #endif /* CONFIG_SOFTMMU */ + +/* GDBstub can read and write MSR... */ +void ppc_store_msr(CPUPPCState *env, target_ulong value) +{ + hreg_store_msr(env, value, 0); +} + +void ppc_store_lpcr(PowerPCCPU *cpu, target_ulong val) +{ + PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu); + CPUPPCState *env = &cpu->env; + + env->spr[SPR_LPCR] = val & pcc->lpcr_mask; + /* The gtse bit affects hflags */ + hreg_compute_hflags(env); +} + +static inline void fpscr_set_rounding_mode(CPUPPCState *env) +{ + int rnd_type; + + /* Set rounding mode */ + switch (fpscr_rn) { + case 0: + /* Best approximation (round to nearest) */ + rnd_type = float_round_nearest_even; + break; + case 1: + /* Smaller magnitude (round toward zero) */ + rnd_type = float_round_to_zero; + break; + case 2: + /* Round toward +infinite */ + rnd_type = float_round_up; + break; + default: + case 3: + /* Round toward -infinite */ + rnd_type = float_round_down; + break; + } + set_float_rounding_mode(rnd_type, &env->fp_status); +} + +void ppc_store_fpscr(CPUPPCState *env, target_ulong val) +{ + val &= ~(FP_VX | FP_FEX); + if (val & FPSCR_IX) { + val |= FP_VX; + } + if ((val >> FPSCR_XX) & (val >> FPSCR_XE) & 0x1f) { + val |= FP_FEX; + } + env->fpscr = val; + if (tcg_enabled()) { + fpscr_set_rounding_mode(env); + } +} |