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powerpc64: Add initial support for HTM (kABI)

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This patch adds the very initial support for HTM that might come at FreeBSD
version 12.1. This basic support defines a new kABI, so, we do not need to change
it later during 12.1 time frame, when the full implementation will come.

Reviewed by: jhibbits
Approved by: re(marius), jhibbits (mentor)
Differential Revision: https://reviews.freebsd.org/D16889
This commit is contained in:
Breno Leitao 2018-09-06 17:07:21 +00:00
parent 21f01f4584
commit 03e83a838e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=338500
2 changed files with 7 additions and 0 deletions
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6
sys/powerpc/include/pcb.h
View File

@ -56,6 +56,7 @@ struct pcb {
#define PCB_VEC 0x4 /* Process had Altivec initialized */
#define PCB_VSX 0x8 /* Process had VSX initialized */
#define PCB_CDSCR 0x10 /* Process had Custom DSCR initialized */
#define PCB_HTM 0x20 /* Process had HTM initialized */
struct fpu {
union {
double fpr;
@ -73,6 +74,11 @@ struct pcb {
} pcb_vec __aligned(16); /* Vector processor */
unsigned int pcb_veccpu; /* which CPU had our vector
stuff. */
struct htm {
uint64_t tfhar;
uint64_t texasr;
uint64_t tfiar;
} pcb_htm;
union {
struct {

1
sys/powerpc/include/pcpu.h
View File

@ -45,6 +45,7 @@ struct pvo_entry;
struct pmap *pc_curpmap; /* current pmap */ \
struct thread *pc_fputhread; /* current fpu user */ \
struct thread *pc_vecthread; /* current vec user */ \
struct thread *pc_htmthread; /* current htm user */ \
uintptr_t pc_hwref; \
int pc_bsp; \
volatile int pc_awake; \