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Generate the offsets for struct arm64_bootparams and use it in locore.S

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This removes one place with hard coded offsets in locore.S

Sponsored by:	Innovate UK
This commit is contained in:
Andrew Turner 2020-03-02 14:06:50 +00:00
parent 465454ebad
commit 15f8f7200f
2 changed files with 16 additions and 6 deletions
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10
sys/arm64/arm64/genassym.c
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@ -34,8 +34,18 @@ __FBSDID("$FreeBSD$");
#include <sys/proc.h>
#include <machine/frame.h>
#include <machine/machdep.h>
#include <machine/pcb.h>
/* Sizeof arm64_bootparams, rounded to keep stack alignment */
ASSYM(BOOTPARAMS_SIZE, roundup2(sizeof(struct arm64_bootparams),
STACKALIGNBYTES + 1));
ASSYM(BP_MODULEP, offsetof(struct arm64_bootparams, modulep));
ASSYM(BP_KERN_L1PT, offsetof(struct arm64_bootparams, kern_l1pt));
ASSYM(BP_KERN_DELTA, offsetof(struct arm64_bootparams, kern_delta));
ASSYM(BP_KERN_STACK, offsetof(struct arm64_bootparams, kern_stack));
ASSYM(BP_KERN_L0PT, offsetof(struct arm64_bootparams,kern_l0pt));
ASSYM(TDF_ASTPENDING, TDF_ASTPENDING);
ASSYM(TDF_NEEDRESCHED, TDF_NEEDRESCHED);

12
sys/arm64/arm64/locore.S
View File

@ -153,18 +153,18 @@ virtdone:
sub x26, x26, x29
sub x24, x24, x29
sub sp, sp, #(64 * 4)
sub sp, sp, #BOOTPARAMS_SIZE
mov x0, sp
/* Degate the delda so it is VA -> PA */
neg x29, x29
str x1, [x0] /* modulep */
str x26, [x0, 8] /* kern_l1pt */
str x29, [x0, 16] /* kern_delta */
str x1, [x0, #BP_MODULEP]
str x26, [x0, #BP_KERN_L1PT]
str x29, [x0, #BP_KERN_DELTA]
adr x25, initstack
str x25, [x0, 24] /* kern_stack */
str x24, [x0, 32] /* kern_l0pt */
str x25, [x0, #BP_KERN_STACK]
str x24, [x0, #BP_KERN_L0PT]
/* trace back starts here */
mov fp, #0