diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 1997-01-07 02:33:00 +0000 |
|---|---|---|
| committer | <ralf@linux-mips.org> | 1997-01-07 02:33:00 +0000 |
| commit | beb116954b9b7f3bb56412b2494b562f02b864b1 (patch) | |
| tree | 120e997879884e1b9d93b265221b939d2ef1ade1 /arch/alpha/kernel/head.S | |
| parent | 908d4681a1dc3792ecafbe64265783a86c4cccb6 (diff) | |
Import of Linux/MIPS 2.1.14
Diffstat (limited to 'arch/alpha/kernel/head.S')
| -rw-r--r-- | arch/alpha/kernel/head.S | 70 |
1 files changed, 50 insertions, 20 deletions
diff --git a/arch/alpha/kernel/head.S b/arch/alpha/kernel/head.S index 2cff1159a..0c1fc8681 100644 --- a/arch/alpha/kernel/head.S +++ b/arch/alpha/kernel/head.S @@ -9,16 +9,17 @@ #define __ASSEMBLY__ #include <asm/system.h> -#include <linux/fd.h> -#define halt .long PAL_halt +#define halt call_pal PAL_halt .globl swapper_pg_dir +.globl _stext swapper_pg_dir=SWAPPER_PGD .set noreorder .globl __start .ent __start +_stext: __start: br $27,1f 1: ldgp $29,0($27) @@ -31,48 +32,48 @@ __start: .globl wrent .ent wrent wrent: - .long PAL_wrent - ret ($26) + call_pal PAL_wrent + ret ($26) .end wrent .align 3 .globl wrkgp .ent wrkgp wrkgp: - .long PAL_wrkgp - ret ($26) + call_pal PAL_wrkgp + ret ($26) .end wrkgp .align 3 .globl wrusp .ent wrusp wrusp: - .long PAL_wrusp - ret ($26) + call_pal PAL_wrusp + ret ($26) .end wrusp .align 3 .globl rdusp .ent rdusp rdusp: - .long PAL_rdusp - ret ($26) + call_pal PAL_rdusp + ret ($26) .end rdusp .align 3 .globl tbi .ent tbi tbi: - .long PAL_tbi - ret ($26) + call_pal PAL_tbi + ret ($26) .end tbi .align 3 .globl imb .ent imb imb: - .long PAL_imb - ret ($26) + call_pal PAL_imb + ret ($26) .end imb .align 3 @@ -80,7 +81,7 @@ imb: .ent rdmces rdmces: call_pal PAL_rdmces - ret ($26) + ret ($26) .end rdmces .align 3 @@ -88,10 +89,39 @@ rdmces: .ent wrmces wrmces: call_pal PAL_wrmces - ret ($26) + ret ($26) .end wrmces -.align 9 -.globl floppy_track_buffer -floppy_track_buffer: - .space 512*2*MAX_BUFFER_SECTORS,1 + # + # The following two functions don't need trapb/excb instructions + # around the mf_fpcr/mt_fpcr instructions because (a) the kernel + # never generates arithmetic faults and (b) call_pal instructions + # are implied trap barriers. + # + .align 3 + .globl rdfpcr + .ent rdfpcr +rdfpcr: + lda $30,-0x10($30) + stt $f0,0($30) + mf_fpcr $f0 + stt $f0,8($30) + ldt $f0,0($30) + ldq $0,8($30) + lda $30,0x10($30) + ret ($26) + .end rdfpcr + + .align 3 + .globl wrfpcr + .ent wrfpcr +wrfpcr: + lda $30,-0x10($30) + stt $f0,0($30) + stq $16,8($30) + ldt $f0,8($30) + mt_fpcr $f0 + ldt $f0,0($30) + lda $30,0x10($30) + ret ($26) + .end wrfpcr |