diff options
| author | Nicholas Piggin <npiggin@gmail.com> | 2023-11-22 17:08:45 +1000 |
|---|---|---|
| committer | Nicholas Piggin <npiggin@gmail.com> | 2024-02-23 23:24:43 +1000 |
| commit | 19e81ce51e68d9a1e6a317cd3f3e519757d16dfd (patch) | |
| tree | b91ae46be3c427e441eb9bf512948aa6b7799f04 /target/ppc/helper_regs.c | |
| parent | 0c0fc268dfd4dbaf59e59377ca8a390f362256ad (diff) | |
target/ppc: Rename TBL to TB on 64-bit
From the earliest PowerPC ISA, TBR (later SPR) 268 has been called TB
and accessed with mftb instruction. The problem is that TB is the name
of the 64-bit register, and 32-bit implementations can only read the
lower half with one instruction, so 268 has also been called TBL and
it does only read TBL on 32-bit.
Change SPR 268 to be called TB on 64-bit implementations.
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Diffstat (limited to 'target/ppc/helper_regs.c')
| -rw-r--r-- | target/ppc/helper_regs.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/target/ppc/helper_regs.c b/target/ppc/helper_regs.c index 8324ff22db..8f5bd1536e 100644 --- a/target/ppc/helper_regs.c +++ b/target/ppc/helper_regs.c @@ -460,7 +460,11 @@ void register_generic_sprs(PowerPCCPU *cpu) } /* Time base */ +#if defined(TARGET_PPC64) + spr_register(env, SPR_VTBL, "TB", +#else spr_register(env, SPR_VTBL, "TBL", +#endif &spr_read_tbl, SPR_NOACCESS, &spr_read_tbl, SPR_NOACCESS, 0x00000000); |