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Implement missing parts of the logic for the POWER PURR

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The PURR (Processor Utilization Resource Register) is a register found
on recent POWER CPUs.  The guts of implementing it at least enough to
get by are already present in qemu, however some of the helper
functions needed to actually wire it up are missing.

This patch adds the necessary glue, so that the PURR can be wired up
when we implement newer POWER CPU targets which include it.

Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
David Gibson 2011-04-01 15:15:12 +11:00 committed by Alexander Graf
parent efdef95fee
commit 3a7f009abc
3 changed files with 16 additions and 0 deletions
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1
target-ppc/helper.h
View File

@ -376,6 +376,7 @@ DEF_HELPER_0(load_601_rtcu, tl)
#if !defined(CONFIG_USER_ONLY)
#if defined(TARGET_PPC64)
DEF_HELPER_1(store_asr, void, tl)
DEF_HELPER_0(load_purr, tl)
#endif
DEF_HELPER_1(store_sdr1, void, tl)
DEF_HELPER_1(store_tbl, void, tl)

7
target-ppc/op_helper.c
View File

@ -86,6 +86,13 @@ target_ulong helper_load_atbu (void)
return cpu_ppc_load_atbu(env);
}
#if defined(TARGET_PPC64) && !defined(CONFIG_USER_ONLY)
target_ulong helper_load_purr (void)
{
return (target_ulong)cpu_ppc_load_purr(env);
}
#endif
target_ulong helper_load_601_rtcl (void)
{
return cpu_ppc601_load_rtcl(env);

8
target-ppc/translate_init.c
View File

@ -251,6 +251,14 @@ static void spr_write_atbu (void *opaque, int sprn, int gprn)
{
gen_helper_store_atbu(cpu_gpr[gprn]);
}
#if defined(TARGET_PPC64)
__attribute__ (( unused ))
static void spr_read_purr (void *opaque, int gprn, int sprn)
{
gen_helper_load_purr(cpu_gpr[gprn]);
}
#endif
#endif
#if !defined(CONFIG_USER_ONLY)