sun4u/ml/trap_table.s

5  * Common Development and Distribution License (the "License").
11  * and limitations under the License.
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
76  * blocks, and some are instantiated multiple times within
118  * It comes in both single and quadruple flavors.
139  * It also comes in single and quadruple versions.
165  * set to 'nosys') and legacy support of old SunOS 4.x syscalls (with
169  * SYSCALL_TRAP is used to support LP64 syscalls and SYSCALL_TRAP32
172  * points by the brand infrastructure to dynamically enable and disable
174  * and brand_plat_interposition_enable() for more information.
220  * correctable ECC error traps at  level 0 and 1 will use this macro.
291  * The mixed handler works by checking %sp, and branching to the correct
294  * 64b, mixed.  The 1: and 2: labels are offset into the routines to
300  * assumes that the kernel context and the nucleus context are the
370  * windows at tl>1 where performance isn't the primary concern and
404  * that the kernel context and the nucleus context are the same.  The
474  * windows at tl>1 where performance isn't the primary concern and
508  * assumes that the kernel context and the nucleus context are the
575  * windows at tl>1 where performance isn't the primary concern and
607  * that the kernel context and the nucleus context are the same.  The
674  * windows at tl>1 where performance isn't the primary concern and
747  * SPILL_32clean/SPILL_64clean spill 32-bit and 64-bit register windows,
754  * so when cansave == 0, canrestore == 6, and cleanwin == 6 the next save
758  * spill the appropriate window but also back up a window and clean the
850  * asynchronous traps at level 0 and level 1
996  * SPARC V9 IMPL. DEP. #109(1) and (2) and #110(1) and (2)
1035 	and	%g2, %g4, %g3			/* g3 = ctx */		;\
1037 	and	%g6, %g4, %g6			/* &= CTXREG_CTX_MASK */ ;\
1043 	and	%g6, %g4, %g6			/* &= CTXREG_CTX_MASK */ ;\
1242  * It first demaps the tlb entry which generated the fault and then
1256 					/* clobbers g1 and g6 */	;\
1591  * We get to exec_fault in the case of an instruction miss and tte
1766 	 * was interrupted) and use the value of t->t_dtrace_npc as the %npc.
1827 	andcc	%g1, %g4, %g4		! and instruction with mask
1853 	 * was interrupted) and use the value of t->t_dtrace_npc as the %npc.
1907 	 * via "fitod" and "fdtos" provided the following conditions are met:
1922 	 * flag to catch those traps and let the SFMMU code deal with page
1923 	 * fault and data access exception.
1935 	and	%g7, (FSR_FTT>>FSR_FTT_SHIFT), %g7
1949 	and	%g6, %g7, %g7
1957 	 * need to simulate "fitos" via "fitod" and "fdtos" instruction
1961 	 * both source and destination operands for the "fitos" instruction
1964 	 * dest operand. However, we do have to save and restore its value.
1966 	 * We use %d62 as a temporary FP register for the conversion and
1968 	 * based upon the rs2 and rd values.
1974 	and	%g7, FITOS_REG_MASK, %g7
2020 	and	%g7, FITOS_REG_MASK, %g7
2125  * .spill_clean: clean the previous window, restore the wstate, and
2319 	and	%g1, 1, %g1
2323 	and	%g1, 1, %g1
2328 	and	%g1, 0xFF, %g1		! imm_asi field
2353 	and	%g3, 0x1F, %g3		! %g3 has rd
2366 	set	fpu_trap, %g1		! goto C for the little and
2390 	and	%g1, 1, %g1
2394 	and	%g1, 1, %g1
2399 	and	%g1, 0xFF, %g1		! imm_asi field
2409 	and	%g6, 0x1F, %g6		! %g6 has rd
2429 	set	fpu_trap, %g1		! goto C for the little and
2461 	and	%o0, %g2, %o0			! mask out the rest
2481 	and	%g2, %g3, %g2			! mask out rest
2504 	and	%o0, %g2, %o0			! mask out the rest
2507 	and	%g1, FPRS_FEF, %g2		! mask out dirty upper/lower
2530 	and	%g2, %o0, %g2			! clear all but psr.icc bits
2535 	and	%g2, %o0, %g2			! clear all but fp enable bit
2678 	 * We are running on a Panther and have hit a DTLB parity error.
2712 	and	%g6, %g5, %g5
2726 	and	%g6, WTRAP_TTMASK, %g6
2751  * Several traps use kmdb_trap and kmdb_trap_tl1 as their handlers.  These
2947  * results in other traps, and if the corresponding trap handler runs
2963  * We check for any pending interrupts here and force a sys_trap to
2972  * boundary, we can't use the above optimization and always process
2994 	and	%g5, IRSR_BUSY, %g5
3026  * entry points are redirected to syscall_wrapper32 and syscall_wrapper
3027  * for ILP32 and LP64 syscalls respectively.  this is done in