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| author | grehan <grehan@FreeBSD.org> | 2004-02-04 12:56:15 +0000 |
|---|---|---|
| committer | grehan <grehan@FreeBSD.org> | 2004-02-04 12:56:15 +0000 |
| commit | 6a5c53abb63246e5af9fa4c880f09017047ea2ab (patch) | |
| tree | 72418719129c0ac441ed6389b6ef19d1a35fa3dc /sys | |
| parent | 506b2617301b6812d3d159a0d3ddbced596b3868 (diff) | |
| download | FreeBSD-src-6a5c53abb63246e5af9fa4c880f09017047ea2ab.zip FreeBSD-src-6a5c53abb63246e5af9fa4c880f09017047ea2ab.tar.gz | |
Move temporary register save area from exception-vector memory to
per-CPU memory. This allows for interrupt handling on multiple CPUs.
Obtained from: NetBSD
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/powerpc/include/pcpu.h | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/sys/powerpc/include/pcpu.h b/sys/powerpc/include/pcpu.h index a2c88c4..8c84ea2 100644 --- a/sys/powerpc/include/pcpu.h +++ b/sys/powerpc/include/pcpu.h @@ -34,13 +34,25 @@ #include <machine/cpufunc.h> struct pmap; +#define CPUSAVE_LEN 8 #define PCPU_MD_FIELDS \ int pc_inside_intr; \ - u_int32_t pc_next_asn; /* next ASN to alloc */ \ - u_int32_t pc_current_asngen; /* ASN rollover check */\ struct pmap *pc_curpmap; /* current pmap */ \ - struct thread *pc_fputhread /* current user of the fpu */ + struct thread *pc_fputhread; /* current fpu user */ \ + register_t pc_tempsave[CPUSAVE_LEN]; \ + register_t pc_disisave[CPUSAVE_LEN]; \ + register_t pc_ddbsave[CPUSAVE_LEN]; + +/* Definitions for register offsets within the exception tmp save areas */ +#define CPUSAVE_R28 0 /* where r28 gets saved */ +#define CPUSAVE_R29 1 /* where r29 gets saved */ +#define CPUSAVE_R30 2 /* where r30 gets saved */ +#define CPUSAVE_R31 3 /* where r31 gets saved */ +#define CPUSAVE_DAR 4 /* where SPR_DAR gets saved */ +#define CPUSAVE_DSISR 5 /* where SPR_DSISR gets saved */ +#define CPUSAVE_SRR0 6 /* where SRR0 gets saved */ +#define CPUSAVE_SRR1 7 /* where SRR1 gets saved */ #define PCPUP ((struct pcpu *) powerpc_get_pcpup()) |
