diff options
Diffstat (limited to 'sys/ia64/ia64/exception.S')
| -rw-r--r-- | sys/ia64/ia64/exception.S | 220 |
1 files changed, 172 insertions, 48 deletions
diff --git a/sys/ia64/ia64/exception.S b/sys/ia64/ia64/exception.S index 5a15270..4a927e7 100644 --- a/sys/ia64/ia64/exception.S +++ b/sys/ia64/ia64/exception.S @@ -50,63 +50,185 @@ __FBSDID("$FreeBSD$"); .section .ivt.data, "aw" + .align 8 .global ia64_kptdir + .size ia64_kptdir, 8 ia64_kptdir: data8 0 -#ifdef EXCEPTION_TRACING +#ifdef XTRACE - .global xtrace, xhead -xtrace: .space 1024*5*8 -xhead: data8 xtrace + .align 8 + .global ia64_xtrace_mask + .size ia64_xtrace_mask, 8 +ia64_xtrace_mask: data8 0 -#define XTRACE(offset) \ -{ .mmi ; \ - mov r24=ar.itc ; \ - mov r25=cr.iip ; \ - mov r27=offset ; \ -} ; \ -{ .mlx ; \ - mov r28=cr.ifa ; \ - movl r29=xhead ;; \ -} ; \ -{ .mmi ; \ - ld8 r29=[r29] ;; \ - st8 [r29]=r24,8 ; \ - nop 0 ;; \ -} ; \ -{ .mmi ; \ - st8 [r29]=r27,8 ;; \ - mov r24=cr.isr ; \ - add r27=8,r29 ;; \ -} ; \ -{ .mmi ; \ - st8 [r29]=r25,16 ;; \ - st8 [r27]=r28,16 ; \ - mov r25=pr ;; \ + .align 4 + .global ia64_xtrace_enabled + .size ia64_xtrace_enabled, 4 +ia64_xtrace_enabled: data4 0 + +#define XTRACE_HOOK(offset) \ +{ .mii ; \ + nop 0 ; \ + mov r31 = b7 ; \ + mov r28 = pr ; \ } ; \ -{ .mlx ; \ - st8 [r29]=r24 ; \ - movl r28=xhead ;; \ +{ .mib ; \ + nop 0 ; \ + mov r25 = ip ; \ + br.sptk ia64_xtrace_write ;; \ } ; \ { .mii ; \ - cmp.eq p15,p0=r27,r28 ; \ - addl r29=1024*5*8,r0 ;; \ -(p15) sub r27=r28,r29 ;; \ -} ; \ -{ .mmi ; \ - st8 [r28]=r27 ; \ - nop 0 ; \ - mov pr=r25,0x1ffff ;; \ + nop 0 ; \ + mov b7 = r31 ; \ + mov pr = r28, 0x1ffff ;; \ } -#else + .section .ivt.text, "ax" -#define XTRACE(offset) +// We can only use r25, r26 & r27 +ENTRY_NOPROFILE(ia64_xtrace_write, 0) +{ .mlx + add r25 = 16, r25 + movl r26 = ia64_xtrace_enabled + ;; +} +{ .mmi + mov r27 = ar.k3 + ld4 r26 = [r26] + mov b7 = r25 + ;; +} +{ .mib + add r25 = -32, r25 + cmp.eq p15,p0 = r0, r26 +(p15) br.dptk.few b7 + ;; +} +{ .mib + nop 0 + cmp.eq p15,p0 = r0, r27 +(p15) br.dptk.few b7 + ;; +} +{ .mmi + st8 [r27] = r25, 8 // 0x00 IVT + mov r26 = ar.itc + nop 0 + ;; +} +{ .mmi + st8 [r27] = r26, 8 // 0x08 ITC + mov r25 = cr.iip + nop 0 + ;; +} +{ .mmi + st8 [r27] = r25, 8 // 0x10 IIP + mov r26 = cr.ifa + nop 0 + ;; +} +{ .mmi + st8 [r27] = r26, 8 // 0x18 IFA + mov r25 = cr.isr + nop 0 + ;; +} +{ .mmi + st8 [r27] = r25, 8 // 0x20 ISR + mov r26 = cr.ipsr + nop 0 + ;; +} +{ .mmi + st8 [r27] = r26, 8 // 0x28 IPSR + mov r25 = cr.itir + nop 0 + ;; +} +{ .mmi + st8 [r27] = r25, 8 // 0x30 ITIR + mov r26 = cr.iipa + nop 0 + ;; +} +{ .mmi + st8 [r27] = r26, 8 // 0x38 IIPA + mov r25 = cr.ifs + nop 0 + ;; +} +{ .mmi + st8 [r27] = r25, 8 // 0x40 IFS + mov r26 = cr.iim + nop 0 + ;; +} +{ .mmi + st8 [r27] = r26, 8 // 0x48 IIM + mov r25 = cr.iha + nop 0 + ;; +} +{ .mmi + st8 [r27] = r25, 8 // 0x50 IHA + mov r26 = ar.unat + nop 0 + ;; +} +{ .mmi + st8 [r27] = r26, 8 // 0x58 UNAT + mov r25 = ar.rsc + nop 0 + ;; +} +{ .mmi + st8 [r27] = r25, 8 // 0x60 RSC + mov r26 = ar.bsp + nop 0 + ;; +} +{ .mmi + st8 [r27] = r26, 8 // 0x68 BSP + mov r25 = r13 + nop 0 + ;; +} +{ .mmi + st8 [r27] = r25, 8 // 0x70 PCPU/TLS + mov r26 = r12 + nop 0 + ;; +} +{ .mlx + st8 [r27] = r26, 8 // 0x78 SP + movl r25 = ia64_xtrace_mask + ;; +} +{ .mmi + ld8 r26 = [r25] + ;; + and r25 = r27, r26 + nop 0 + ;; +} +{ .mib + mov ar.k3 = r25 + nop 0 + br.sptk b7 + ;; +} +END(ia64_xtrace_write) -#endif +#else /* XTRACE */ + +#define XTRACE_HOOK(offset) .section .ivt.text, "ax" +#endif /* XTRACE */ + /* * exception_save: save interrupted state * @@ -632,6 +754,7 @@ ENTRY_NOPROFILE(exception_restore, 0) ssm psr.dt ;; srlz.d + mov r16 = r25 exception_restore_restart: { .mmi @@ -649,20 +772,21 @@ exception_restore_restart: ;; } { .mmi + mov cr.ifs=r16 mov ar.k6=r31 - mov ar.rnat=r21 - nop 0 + mov pr=r18,0x1ffff ;; } { .mmi - mov ar.unat=r17 mov cr.iip=r19 + mov ar.unat=r17 nop 0 + ;; } { .mmi mov cr.ipsr=r24 - mov cr.ifs=r25 - mov pr=r18,0x1ffff + mov ar.rnat=r21 + nop 0 ;; } { .mmb @@ -713,7 +837,7 @@ END(exception_restore) .save rp, r0; \ .body; \ ivt_##name: \ - XTRACE(offset) + XTRACE_HOOK(offset) #define IVT_END(name) \ .endp ivt_##name |
