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root/cebix/SheepShaver/src/Unix/ppc_asm.S

Comparing SheepShaver/src/Unix/ppc_asm.S (file contents):
Revision 1.2 by gbeauche, 2005-02-27T21:52:06Z vs.
Revision 1.9 by gbeauche, 2006-05-03T22:11:49Z

#	Line 180 | Line 180 | C_SYMBOL_NAME(test_and_set):
180		isync
181		lwarx   r5,0,r3
182		cmpi    0,r5,0x0000
183	<	beq     1f
183	>	bne     1f
184		stwcx.  r4,0,r3
185		bne-    0b
186		1:      isync
#	Line 344 | Line 344 | C_SYMBOL_NAME(jump_to_rom):
344		lwz     r0,56+19*4+18*8+4(r1)
345		mtlr    r0
346		addi    r1,r1,56+19*4+18*8
347	+	RESTORE_SYSTEM_R2
348	+	RESTORE_SYSTEM_R13
349		blr
350
351
#	Line 380 | Line 382 | C_SYMBOL_NAME(jump_to_rom):
382		mfxer   r0
383		stw     r0,16(r1)
384		stw     r2,12(r1)
385	<	stwu    r1,-(24+16*4+15*8)(r1)
384	<	RESTORE_SYSTEM_R2
385	>	stwu    r1,-(56+16*4+15*8)(r1)
386
387		// Save 68k registers (M68kRegisters)
388	<	stw     r8,24+0*4(r1)   // d[0]..d[7]
389	<	stw     r9,24+1*4(r1)
390	<	stw     r10,24+2*4(r1)
391	<	stw     r11,24+3*4(r1)
392	<	stw     r12,24+4*4(r1)
393	<	stw     r13,24+5*4(r1)
394	<	stw     r14,24+6*4(r1)
395	<	stw     r15,24+7*4(r1)
396	<	stw     r16,24+8*4(r1)  // a[0]..a[7]
397	<	stw     r17,24+9*4(r1)
398	<	stw     r18,24+10*4(r1)
399	<	stw     r19,24+11*4(r1)
400	<	stw     r20,24+12*4(r1)
401	<	stw     r21,24+13*4(r1)
402	<	stw     r22,24+14*4(r1)
403	<	stw     r3,24+15*4(r1)
404	<	stfd    f0,24+16*4+0*8(r1)
405	<	stfd    f1,24+16*4+1*8(r1)
406	<	stfd    f2,24+16*4+2*8(r1)
407	<	stfd    f3,24+16*4+3*8(r1)
408	<	stfd    f4,24+16*4+4*8(r1)
409	<	stfd    f5,24+16*4+5*8(r1)
410	<	stfd    f6,24+16*4+6*8(r1)
411	<	stfd    f7,24+16*4+7*8(r1)
388	>	stw     r8,56+0*4(r1)   // d[0]..d[7]
389	>	stw     r9,56+1*4(r1)
390	>	stw     r10,56+2*4(r1)
391	>	stw     r11,56+3*4(r1)
392	>	stw     r12,56+4*4(r1)
393	>	stw     r13,56+5*4(r1)
394	>	stw     r14,56+6*4(r1)
395	>	stw     r15,56+7*4(r1)
396	>	stw     r16,56+8*4(r1)  // a[0]..a[7]
397	>	stw     r17,56+9*4(r1)
398	>	stw     r18,56+10*4(r1)
399	>	stw     r19,56+11*4(r1)
400	>	stw     r20,56+12*4(r1)
401	>	stw     r21,56+13*4(r1)
402	>	stw     r22,56+14*4(r1)
403	>	stw     r3,56+15*4(r1)
404	>	stfd    f0,56+16*4+0*8(r1)
405	>	stfd    f1,56+16*4+1*8(r1)
406	>	stfd    f2,56+16*4+2*8(r1)
407	>	stfd    f3,56+16*4+3*8(r1)
408	>	stfd    f4,56+16*4+4*8(r1)
409	>	stfd    f5,56+16*4+5*8(r1)
410	>	stfd    f6,56+16*4+6*8(r1)
411	>	stfd    f7,56+16*4+7*8(r1)
412		mffs    f0
413	<	stfd    f8,24+16*4+8*8(r1)
414	<	stfd    f9,24+16*4+9*8(r1)
415	<	stfd    f10,24+16*4+10*8(r1)
416	<	stfd    f11,24+16*4+11*8(r1)
417	<	stfd    f12,24+16*4+12*8(r1)
418	<	stfd    f13,24+16*4+13*8(r1)
419	<	stfd    f0,24+16*4+14*8(r1)
413	>	stfd    f8,56+16*4+8*8(r1)
414	>	stfd    f9,56+16*4+9*8(r1)
415	>	stfd    f10,56+16*4+10*8(r1)
416	>	stfd    f11,56+16*4+11*8(r1)
417	>	stfd    f12,56+16*4+12*8(r1)
418	>	stfd    f13,56+16*4+13*8(r1)
419	>	stfd    f0,56+16*4+14*8(r1)
420
421		// Execute native routine
422		RESTORE_SYSTEM_R2
423		RESTORE_SYSTEM_R13
424	<	addi    r3,r1,24
424	>	addi    r3,r1,56
425		mr      r4,r24
426		bl      C_SYMBOL_NAME(EmulOp)
427
428		// Restore 68k registers (M68kRegisters)
429	<	lwz     r8,24+0*4(r1)   // d[0]..d[7]
430	<	lwz     r9,24+1*4(r1)
431	<	lwz     r10,24+2*4(r1)
432	<	lwz     r11,24+3*4(r1)
433	<	lwz     r12,24+4*4(r1)
434	<	lwz     r13,24+5*4(r1)
435	<	lwz     r14,24+6*4(r1)
436	<	lwz     r15,24+7*4(r1)
437	<	lwz     r16,24+8*4(r1)  // a[0]..a[7]
438	<	lwz     r17,24+9*4(r1)
439	<	lwz     r18,24+10*4(r1)
440	<	lwz     r19,24+11*4(r1)
441	<	lwz     r20,24+12*4(r1)
442	<	lwz     r21,24+13*4(r1)
443	<	lwz     r22,24+14*4(r1)
444	<	lwz     r3,24+15*4(r1)
445	<	lfd     f13,24+16*4+14*8(r1)
446	<	lfd     f0,24+16*4+0*8(r1)
447	<	lfd     f1,24+16*4+1*8(r1)
448	<	lfd     f2,24+16*4+2*8(r1)
449	<	lfd     f3,24+16*4+3*8(r1)
450	<	lfd     f4,24+16*4+4*8(r1)
451	<	lfd     f5,24+16*4+5*8(r1)
452	<	lfd     f6,24+16*4+6*8(r1)
453	<	lfd     f7,24+16*4+7*8(r1)
429	>	lwz     r8,56+0*4(r1)   // d[0]..d[7]
430	>	lwz     r9,56+1*4(r1)
431	>	lwz     r10,56+2*4(r1)
432	>	lwz     r11,56+3*4(r1)
433	>	lwz     r12,56+4*4(r1)
434	>	lwz     r13,56+5*4(r1)
435	>	lwz     r14,56+6*4(r1)
436	>	lwz     r15,56+7*4(r1)
437	>	lwz     r16,56+8*4(r1)  // a[0]..a[7]
438	>	lwz     r17,56+9*4(r1)
439	>	lwz     r18,56+10*4(r1)
440	>	lwz     r19,56+11*4(r1)
441	>	lwz     r20,56+12*4(r1)
442	>	lwz     r21,56+13*4(r1)
443	>	lwz     r22,56+14*4(r1)
444	>	lwz     r3,56+15*4(r1)
445	>	lfd     f13,56+16*4+14*8(r1)
446	>	lfd     f0,56+16*4+0*8(r1)
447	>	lfd     f1,56+16*4+1*8(r1)
448	>	lfd     f2,56+16*4+2*8(r1)
449	>	lfd     f3,56+16*4+3*8(r1)
450	>	lfd     f4,56+16*4+4*8(r1)
451	>	lfd     f5,56+16*4+5*8(r1)
452	>	lfd     f6,56+16*4+6*8(r1)
453	>	lfd     f7,56+16*4+7*8(r1)
454		mtfsf   0xff,f13
455	<	lfd     f8,24+16*4+8*8(r1)
456	<	lfd     f9,24+16*4+9*8(r1)
457	<	lfd     f10,24+16*4+10*8(r1)
458	<	lfd     f11,24+16*4+11*8(r1)
459	<	lfd     f12,24+16*4+12*8(r1)
460	<	lfd     f13,24+16*4+13*8(r1)
455	>	lfd     f8,56+16*4+8*8(r1)
456	>	lfd     f9,56+16*4+9*8(r1)
457	>	lfd     f10,56+16*4+10*8(r1)
458	>	lfd     f11,56+16*4+11*8(r1)
459	>	lfd     f12,56+16*4+12*8(r1)
460	>	lfd     f13,56+16*4+13*8(r1)
461
462		// Delete PowerPC stack frame
463	<	lwz     r2,24+16*4+15*8+12(r1)
464	<	lwz     r0,24+16*4+15*8+16(r1)
463	>	lwz     r2,56+16*4+15*8+12(r1)
464	>	lwz     r0,56+16*4+15*8+16(r1)
465		mtxer   r0
466	<	lwz     r0,24+16*4+15*8+4(r1)
466	>	lwz     r0,56+16*4+15*8+4(r1)
467		mtcrf   0xff,r0
468		mr      r1,r3
469
#	Line 595 | Line 596 | ASM_MACRO_START        prolog
596		ASM_MACRO_END
597
598		ASM_MACRO_START epilog
598	–	RESTORE_SYSTEM_R2
599	–	RESTORE_SYSTEM_R13
599		lwz     r0,64+4(r1)
600		mtlr    r0
601		addi    r1,r1,64
602	+	RESTORE_SYSTEM_R2
603	+	RESTORE_SYSTEM_R13
604		blr
605		ASM_MACRO_END
606
#	Line 708 | Line 709 | C_SYMBOL_NAME(call_macos7):
709		*  Native resource manager patches
710		*/
711
712	<	ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(get_resource)
712	<	C_SYMBOL_NAME(get_resource):
712	>	ASM_MACRO_START do_get_resource ASM_MACRO_ARG0_DEF
713		// Create stack frame
714		mflr    r0
715		stw     r0,8(r1)
#	Line 720 | Line 720 | C_SYMBOL_NAME(get_resource):
720		stw     r4,56+4(r1)
721
722		// Call old routine
723	<	lwz     r0,XLM_GET_RESOURCE(0)
723	>	lwz     r0,ASM_MACRO_ARG0(0)
724		lwz     r2,XLM_RES_LIB_TOC(0)
725		mtctr   r0
726		bctrl
727	–	RESTORE_SYSTEM_R2
727		stw     r3,56+8(r1)             // Save handle
728
729		// Call CheckLoad
730	+	RESTORE_SYSTEM_R2
731	+	RESTORE_SYSTEM_R13
732		lwz     r3,56(r1)
733		lha     r4,56+6(r1)
734		lwz     r5,56+8(r1)
#	Line 739 | Line 740 | C_SYMBOL_NAME(get_resource):
740		mtlr    r0
741		addi    r1,r1,56+12
742		blr
743	+	ASM_MACRO_END
744	+
745	+	ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(get_resource)
746	+	C_SYMBOL_NAME(get_resource):
747	+	do_get_resource XLM_GET_RESOURCE
748
749		ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(get_1_resource)
750		C_SYMBOL_NAME(get_1_resource):
751	<	// Create stack frame
746	<	mflr    r0
747	<	stw     r0,8(r1)
748	<	stwu    r1,-(56+12)(r1)
749	<
750	<	// Save type/ID
751	<	stw     r3,56(r1)
752	<	stw     r4,56+4(r1)
753	<
754	<	// Call old routine
755	<	lwz     r0,XLM_GET_1_RESOURCE(0)
756	<	lwz     r2,XLM_RES_LIB_TOC(0)
757	<	mtctr   r0
758	<	bctrl
759	<	RESTORE_SYSTEM_R2
760	<	stw     r3,56+8(r1)             // Save handle
761	<
762	<	// Call CheckLoad
763	<	lwz     r3,56(r1)
764	<	lha     r4,56+6(r1)
765	<	lwz     r5,56+8(r1)
766	<	bl      C_SYMBOL_NAME(check_load_invoc)
767	<	lwz     r3,56+8(r1)             // Restore handle
768	<
769	<	// Return to caller
770	<	lwz     r0,56+12+8(r1)
771	<	mtlr    r0
772	<	addi    r1,r1,56+12
773	<	blr
751	>	do_get_resource XLM_GET_1_RESOURCE
752
753		ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(get_ind_resource)
754		C_SYMBOL_NAME(get_ind_resource):
755	<	// Create stack frame
778	<	mflr    r0
779	<	stw     r0,8(r1)
780	<	stwu    r1,-(56+12)(r1)
781	<
782	<	// Save type/index
783	<	stw     r3,56(r1)
784	<	stw     r4,56+4(r1)
785	<
786	<	// Call old routine
787	<	lwz     r0,XLM_GET_IND_RESOURCE(0)
788	<	lwz     r2,XLM_RES_LIB_TOC(0)
789	<	mtctr   r0
790	<	bctrl
791	<	RESTORE_SYSTEM_R2
792	<	stw     r3,56+8(r1)             // Save handle
793	<
794	<	// Call CheckLoad
795	<	lwz     r3,56(r1)
796	<	lha     r4,56+6(r1)
797	<	lwz     r5,56+8(r1)
798	<	bl      C_SYMBOL_NAME(check_load_invoc)
799	<	lwz     r3,56+8(r1)             // Restore handle
800	<
801	<	// Return to caller
802	<	lwz     r0,56+12+8(r1)
803	<	mtlr    r0
804	<	addi    r1,r1,56+12
805	<	blr
755	>	do_get_resource XLM_GET_IND_RESOURCE
756
757		ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(get_1_ind_resource)
758		C_SYMBOL_NAME(get_1_ind_resource):
759	<	// Create stack frame
810	<	mflr    r0
811	<	stw     r0,8(r1)
812	<	stwu    r1,-(56+12)(r1)
813	<
814	<	// Save type/index
815	<	stw     r3,56(r1)
816	<	stw     r4,56+4(r1)
817	<
818	<	// Call old routine
819	<	lwz     r0,XLM_GET_1_IND_RESOURCE(0)
820	<	lwz     r2,XLM_RES_LIB_TOC(0)
821	<	mtctr   r0
822	<	bctrl
823	<	RESTORE_SYSTEM_R2
824	<	stw     r3,56+8(r1)             // Save handle
825	<
826	<	// Call CheckLoad
827	<	lwz     r3,56(r1)
828	<	lha     r4,56+6(r1)
829	<	lwz     r5,56+8(r1)
830	<	bl      C_SYMBOL_NAME(check_load_invoc)
831	<	lwz     r3,56+8(r1)             // Restore handle
832	<
833	<	// Return to caller
834	<	lwz     r0,56+12+8(r1)
835	<	mtlr    r0
836	<	addi    r1,r1,56+12
837	<	blr
759	>	do_get_resource XLM_GET_1_IND_RESOURCE
760
761		ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(r_get_resource)
762		C_SYMBOL_NAME(r_get_resource):
763	+	do_get_resource XLM_R_GET_RESOURCE
764	+
765	+	ASM_MACRO_START do_get_named_resource ASM_MACRO_ARG0_DEF
766		// Create stack frame
767		mflr    r0
768		stw     r0,8(r1)
#	Line 848 | Line 773 | C_SYMBOL_NAME(r_get_resource):
773		stw     r4,56+4(r1)
774
775		// Call old routine
776	<	lwz     r0,XLM_R_GET_RESOURCE(0)
776	>	lwz     r0,ASM_MACRO_ARG0(0)
777		lwz     r2,XLM_RES_LIB_TOC(0)
778		mtctr   r0
779		bctrl
855	–	RESTORE_SYSTEM_R2
780		stw     r3,56+8(r1)             // Save handle
781
782		// Call CheckLoad
783	+	RESTORE_SYSTEM_R2
784	+	RESTORE_SYSTEM_R13
785		lwz     r3,56(r1)
786	<	lha     r4,56+6(r1)
786	>	lwz     r4,56+4(r1)
787		lwz     r5,56+8(r1)
788	<	bl      C_SYMBOL_NAME(check_load_invoc)
788	>	bl      C_SYMBOL_NAME(named_check_load_invoc)
789		lwz     r3,56+8(r1)             // Restore handle
790
791		// Return to caller
#	Line 867 | Line 793 | C_SYMBOL_NAME(r_get_resource):
793		mtlr    r0
794		addi    r1,r1,56+12
795		blr
796	+	ASM_MACRO_END
797	+
798	+	ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(get_named_resource)
799	+	C_SYMBOL_NAME(get_named_resource):
800	+	do_get_named_resource XLM_GET_NAMED_RESOURCE
801	+
802	+	ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(get_1_named_resource)
803	+	C_SYMBOL_NAME(get_1_named_resource):
804	+	do_get_named_resource XLM_GET_1_NAMED_RESOURCE
805
806
807		/*
#	Line 919 | Line 854 | C_SYMBOL_NAME(ppc_interrupt):
854
855
856		/*
857	<	*  Glue for glibc with TLS support which clobbers r2
923	<	*
924	<	*  The following is derived from dietlibc and only provides
925	<	*  pass-through to kernel syscalls. You also lose asynchronous
926	<	*  cancellation support.
857	>	*  Define signal handlers with alternate stack initialization magic
858		*/
859
860	<	#if defined(__linux__)
861	<	#define __NR_getpid             20
862	<	#define __NR__newselect         142
863	<
864	<	#define syscall_weak(name,wsym,sym) \
865	<	.text; \
866	<	.type wsym,@function; \
867	<	.weak wsym; \
868	<	wsym: ; \
869	<	.type sym,@function; \
870	<	.global sym; \
871	<	sym: \
872	<	li      0,__NR_##name; \
873	<	b       __unified_syscall
874	<
875	<	#define syscall(name,sym) \
876	<	.text; \
877	<	.type sym,@function; \
878	<	.global sym; \
879	<	sym: \
880	<	li      0,__NR_##name; \
881	<	b       __unified_syscall
882	<
883	<
884	<	.type __unified_syscall,@function
885	<	__unified_syscall:
886	<	sc
887	<	bnslr+
888	<	stwu    1,-16(1)
889	<	mflr    0
890	<	stw     0,20(1)
891	<	stw     3,12(1)
892	<	bl      __errno_location
893	<	lwz     0,12(1)
894	<	stw     0,0(3)
895	<	lwz     0,20(1)
896	<	mtlr    0
897	<	addi    1,1,16
898	<	blr
899	<
900	<	/*              name            weak symbol     symbol          */
901	<	syscall(        getpid,         getpid)
902	<	syscall_weak(   _newselect,     select,         __select)
903	<	#endif
860	>	#define SIG_STACK_SIZE 0x10000
861	>
862	>	ASM_MACRO_START do_define_signal_handler        \
863	>	ASM_MACRO_ARG0_DEF /* name */           \
864	>	ASM_MACRO_ARG1_DEF /* stack */          \
865	>	ASM_MACRO_ARG2_DEF /* stack id */       \
866	>	ASM_MACRO_ARG3_DEF /* signal handler */
867	>
868	>	// Alternate stack lower base for this signal handler
869	>	.lcomm ASM_MACRO_ARG1,SIG_STACK_SIZE,ASM_ALIGN_2(4)
870	>	ASM_TYPE(ASM_MACRO_ARG1,@object)
871	>
872	>	// Represents the current nest level for this signal handler
873	>	// Note that in SheepShaver, SIGUSR2 signals are blocked while
874	>	// handling other signals so, it's unlikely we ever get a nest
875	>	// level greater than 1
876	>	.lcomm ASM_MACRO_ARG2,4,ASM_ALIGN_2(2)
877	>	ASM_TYPE(ASM_MACRO_ARG2,@object)
878	>
879	>	ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(ASM_MACRO_ARG0)
880	>	C_SYMBOL_NAME(ASM_MACRO_ARG0):
881	>	// Preserve args in scratch registers
882	>	mflr    r14
883	>	mr      r15,r3
884	>	mr      r16,r4
885	>	mr      r17,r5
886	>	mr      r18,r1
887	>
888	>	// Atomically increase stack_id
889	>	lis     r19,ASM_HA16(ASM_MACRO_ARG2)
890	>	la      r19,ASM_LO16(ASM_MACRO_ARG2,r19)
891	>	li      r4,1
892	>	mr      r3,r19
893	>	bl      C_SYMBOL_NAME(atomic_add)
894	>	cmpwi   r3,0
895	>	bne-    1f
896	>
897	>	// ID was 0, we can use the local stack
898	>	lis     r9,ASM_HA16(ASM_MACRO_ARG1)
899	>	lis     r3,(SIG_STACK_SIZE>>16)
900	>	la      r9,ASM_LO16(ASM_MACRO_ARG1,r9)
901	>	addi    r3,r3,((SIG_STACK_SIZE&0xffff)-64)
902	>	add     r1,r9,r3
903	>
904	>	1:      // Invoke signal handler
905	>	stwu    r1,-16(r1)
906	>	mr      r3,r15
907	>	mr      r4,r16
908	>	mr      r5,r17
909	>	bl      C_SYMBOL_NAME(ASM_MACRO_ARG3)
910	>	addi    r1,r1,16
911	>
912	>	// Atomically decrease stack id
913	>	mr      r3,r19
914	>	li      r4,-1
915	>	bl      C_SYMBOL_NAME(atomic_add)
916	>
917	>	// Restore kernel stack and return
918	>	mtlr    r14
919	>	mr      r1,r18
920	>	blr
921	>	ASM_MACRO_END
922	>
923	>	#define DEFINE_SIGNAL_HANDLER(NAME)               \
924	>	do_define_signal_handler                  \
925	>	NAME##_handler_init     ASM_MACRO_ARG_SEP \
926	>	NAME##_stack            ASM_MACRO_ARG_SEP \
927	>	NAME##_stack_id         ASM_MACRO_ARG_SEP \
928	>	NAME##_handler
929	>
930	>	DEFINE_SIGNAL_HANDLER(sigusr2)

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