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Implement the PowerPC alternate time-base, following the 2.04 specification.

Browse source 
Share most code with the time-base management routines.
Remove time-base write routines from user-mode emulation environments.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3277 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
j_mayer 2007-09-30 00:38:38 +00:00
parent 4887d78b01
commit a062e36c58
6 changed files with 139 additions and 62 deletions
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22
linux-user/main.c
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@ -664,7 +664,6 @@ void cpu_loop (CPUSPARCState *env)
#endif
#ifdef TARGET_PPC
static inline uint64_t cpu_ppc_get_tb (CPUState *env)
{
/* TO FIX */
@ -681,32 +680,19 @@ uint32_t cpu_ppc_load_tbu (CPUState *env)
return cpu_ppc_get_tb(env) >> 32;
}
static void cpu_ppc_store_tb (CPUState *env, uint64_t value)
uint32_t cpu_ppc_load_atbl (CPUState *env)
{
/* TO FIX */
return cpu_ppc_get_tb(env) & 0xFFFFFFFF;
}
void cpu_ppc_store_tbu (CPUState *env, uint32_t value)
uint32_t cpu_ppc_load_atbu (CPUState *env)
{
cpu_ppc_store_tb(env, ((uint64_t)value << 32) | cpu_ppc_load_tbl(env));
return cpu_ppc_get_tb(env) >> 32;
}
void cpu_ppc_store_tbl (CPUState *env, uint32_t value)
{
cpu_ppc_store_tb(env, ((uint64_t)cpu_ppc_load_tbl(env) << 32) | value);
}
void cpu_ppc601_store_rtcu (CPUState *env, uint32_t value)
__attribute__ (( alias ("cpu_ppc_store_tbu") ));
uint32_t cpu_ppc601_load_rtcu (CPUState *env)
__attribute__ (( alias ("cpu_ppc_load_tbu") ));
void cpu_ppc601_store_rtcl (CPUState *env, uint32_t value)
{
cpu_ppc_store_tbl(env, value & 0x3FFFFF80);
}
uint32_t cpu_ppc601_load_rtcl (CPUState *env)
{
return cpu_ppc_load_tbl(env) & 0x3FFFFF80;