diff options
| author | David Gibson <david@gibson.dropbear.id.au> | 2011-08-31 15:45:10 +0000 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2011-10-06 09:48:04 +0200 |
| commit | 697ab892786d47008807a49f57b2fd86adfcd098 (patch) | |
| tree | d64a416a4961237e980e9c5e3ab176adb95b44d8 /target-ppc/cpu.h | |
| parent | 2bd9543cd303d9f6cbd37b7466bb03543035156b (diff) | |
Implement POWER7's CFAR in TCG
This patch implements support for the CFAR SPR on POWER7 (Come From
Address Register), which snapshots the PC value at the time of a branch or
an rfid. The latest powerpc-next kernel also catches it and can show it in
xmon or in the signal frames.
This works well enough to let recent kernels boot (which otherwise oops
on the CFAR access). It hasn't been tested enough to be confident that the
CFAR values are actually accurate, but one thing at a time.
Signed-off-by: Ben Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'target-ppc/cpu.h')
| -rw-r--r-- | target-ppc/cpu.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/target-ppc/cpu.h b/target-ppc/cpu.h index 32706dff7a..3f4af22397 100644 --- a/target-ppc/cpu.h +++ b/target-ppc/cpu.h @@ -555,6 +555,8 @@ enum { /* Decrementer clock: RTC clock (POWER, 601) or bus clock */ POWERPC_FLAG_RTC_CLK = 0x00010000, POWERPC_FLAG_BUS_CLK = 0x00020000, + /* Has CFAR */ + POWERPC_FLAG_CFAR = 0x00040000, }; /*****************************************************************************/ @@ -872,6 +874,10 @@ struct CPUPPCState { target_ulong ctr; /* condition register */ uint32_t crf[8]; +#if defined(TARGET_PPC64) + /* CFAR */ + target_ulong cfar; +#endif /* XER */ target_ulong xer; /* Reservation address */ @@ -1204,6 +1210,7 @@ static inline void cpu_clone_regs(CPUState *env, target_ulong newsp) #define SPR_601_UDECR (0x006) #define SPR_LR (0x008) #define SPR_CTR (0x009) +#define SPR_DSCR (0x011) #define SPR_DSISR (0x012) #define SPR_DAR (0x013) /* DAE for PowerPC 601 */ #define SPR_601_RTCU (0x014) @@ -1212,6 +1219,7 @@ static inline void cpu_clone_regs(CPUState *env, target_ulong newsp) #define SPR_SDR1 (0x019) #define SPR_SRR0 (0x01A) #define SPR_SRR1 (0x01B) +#define SPR_CFAR (0x01C) #define SPR_AMR (0x01D) #define SPR_BOOKE_PID (0x030) #define SPR_BOOKE_DECAR (0x036) |