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| author | rgrimes <rgrimes@FreeBSD.org> | 1993-09-29 02:37:41 +0000 |
|---|---|---|
| committer | rgrimes <rgrimes@FreeBSD.org> | 1993-09-29 02:37:41 +0000 |
| commit | 7b6449320312d30fe1302a16e10602d020af0283 (patch) | |
| tree | 0953ccd37d7b7f25e7e7ac49ff2cf65e6deb4d9a /sys/amd64 | |
| parent | 86d6cbf750658eb8c52561bad216206f54e9c640 (diff) | |
| download | FreeBSD-src-7b6449320312d30fe1302a16e10602d020af0283.zip FreeBSD-src-7b6449320312d30fe1302a16e10602d020af0283.tar.gz | |
Add symbolic name for system page directory end, and change constant to
a calculation for the system page directory tables.
Diffstat (limited to 'sys/amd64')
| -rw-r--r-- | sys/amd64/amd64/locore.S | 5 | ||||
| -rw-r--r-- | sys/amd64/amd64/locore.s | 5 |
2 files changed, 6 insertions, 4 deletions
diff --git a/sys/amd64/amd64/locore.S b/sys/amd64/amd64/locore.S index 74235a2..6f4d937 100644 --- a/sys/amd64/amd64/locore.S +++ b/sys/amd64/amd64/locore.S @@ -80,6 +80,7 @@ .set SYSTEM,0xFE000000 # virtual address of system start /*note: gas copys sign bit (e.g. arithmetic >>), can't do SYSTEM>>22! */ .set SYSPDROFF,0x3F8 # Page dir index of System Base + .set SYSPDREND,0x3FA # Page dir index of System End /* @@ -343,8 +344,8 @@ ENTRY(btext) movl %eax,(%esi) # which is where temp maps! /* kernel pde's */ - movl $ 3,%ecx # for this many pde s, - lea (SYSPDROFF*4)(%esi), %ebx # offset of pde for kernel + movl $(SYSPDREND-SYSPDROFF+1), %ecx # for this many pde s, + lea (SYSPDROFF*4)(%esi), %ebx # offset of pde for kernel fillkpt /* install a pde recursively mapping page directory as a page table! */ diff --git a/sys/amd64/amd64/locore.s b/sys/amd64/amd64/locore.s index 74235a2..6f4d937 100644 --- a/sys/amd64/amd64/locore.s +++ b/sys/amd64/amd64/locore.s @@ -80,6 +80,7 @@ .set SYSTEM,0xFE000000 # virtual address of system start /*note: gas copys sign bit (e.g. arithmetic >>), can't do SYSTEM>>22! */ .set SYSPDROFF,0x3F8 # Page dir index of System Base + .set SYSPDREND,0x3FA # Page dir index of System End /* @@ -343,8 +344,8 @@ ENTRY(btext) movl %eax,(%esi) # which is where temp maps! /* kernel pde's */ - movl $ 3,%ecx # for this many pde s, - lea (SYSPDROFF*4)(%esi), %ebx # offset of pde for kernel + movl $(SYSPDREND-SYSPDROFF+1), %ecx # for this many pde s, + lea (SYSPDROFF*4)(%esi), %ebx # offset of pde for kernel fillkpt /* install a pde recursively mapping page directory as a page table! */ |
