.globl asm_dumpregistersandcall
.globl asm_handle_exception
.globl asm_handle_nat_exception
- .globl asm_signal_exception
.globl asm_builtin_checkarraycast
.globl asm_builtin_aastore
.globl asm_builtin_monitorenter
srl t8,16,t8 /* isolate instruction code */
lda t8,-0x177b(t8) /* test for LDAH */
bne t8,noregchange
- ldl t8,0(ra) /* load instruction LDA PV,xxx(RA) */
+ ldl t8,4(ra) /* load instruction LDAH PV,xxx(PV) */
sll t8,16,t8 /* compute high offset */
addl t8,0,t8 /* sign extend high offset */
addq t8,$28,$28 /* compute update address */
srl t0,16,t0 /* isolate instruction code */
lda t0,-0x177b(t0) /* test for LDAH */
bne t0,asm_handle_exception
- ldl t0,0(ra) /* load instruction LDA PV,xxx(RA) */
+ ldl t0,4(ra) /* load instruction LDAH PV,xxx(PV) */
sll t0,16,t0 /* compute high offset */
addl t0,0,t0 /* sign extend high offset */
addq t0,pv,pv /* compute update address */
.end asm_handle_exception
-/********************* function asm_signal_exception ***************************
-* *
-* This function handles an exception which was catched by a signal. *
-* *
-* void asm_signal_exception (exceptionptr, signalcontext); *
-* *
-*******************************************************************************/
-
-#define sigctxstack 0*8 /* sigstack state to restore */
-#define sigctxmask 1*8 /* signal mask to restore */
-#define sigctxpc 2*8 /* pc at time of signal */
-#define sigctxpsl 3*8 /* psl to retore */
-#define sigctxr00 4*8 /* processor regs 0 to 31 */
-#define sigctxr01 5*8
-#define sigctxr02 6*8
-#define sigctxr03 7*8
-#define sigctxr04 8*8
-#define sigctxr05 9*8
-#define sigctxr06 10*8
-#define sigctxr07 11*8
-#define sigctxr08 12*8
-#define sigctxr09 13*8
-#define sigctxr10 14*8
-#define sigctxr11 15*8
-#define sigctxr12 16*8
-#define sigctxr13 17*8
-#define sigctxr14 18*8
-#define sigctxr15 19*8
-#define sigctxr16 20*8
-#define sigctxr17 21*8
-#define sigctxr18 22*8
-#define sigctxr19 23*8
-#define sigctxr20 24*8
-#define sigctxr21 25*8
-#define sigctxr22 26*8
-#define sigctxr23 27*8
-#define sigctxr24 28*8
-#define sigctxr25 29*8
-#define sigctxr26 30*8
-#define sigctxr27 31*8
-#define sigctxr28 32*8
-#define sigctxr29 33*8
-#define sigctxr30 34*8
-#define sigctxr31 35*8
-
-#define sigctxfpuse 36*8 /* fp has been used */
-#define sigctxf00 37*8 /* fp regs 0 to 31 */
-#define sigctxf01 38*8
-#define sigctxf02 39*8
-#define sigctxf03 40*8
-#define sigctxf04 41*8
-#define sigctxf05 42*8
-#define sigctxf06 43*8
-#define sigctxf07 44*8
-#define sigctxf08 45*8
-#define sigctxf09 46*8
-#define sigctxf10 47*8
-#define sigctxf11 48*8
-#define sigctxf12 49*8
-#define sigctxf13 50*8
-#define sigctxf14 51*8
-#define sigctxf15 52*8
-#define sigctxf16 53*8
-#define sigctxf17 54*8
-#define sigctxf18 55*8
-#define sigctxf19 56*8
-#define sigctxf20 57*8
-#define sigctxf21 58*8
-#define sigctxf22 59*8
-#define sigctxf23 60*8
-#define sigctxf24 61*8
-#define sigctxf25 62*8
-#define sigctxf26 63*8
-#define sigctxf27 64*8
-#define sigctxf28 65*8
-#define sigctxf29 66*8
-#define sigctxf30 67*8
-#define sigctxf31 68*8
-
-#define sigctxhfpcr 69*8 /* floating point control register */
-#define sigctxsfpcr 70*8 /* software fpcr */
-
- .ent asm_signal_exception
-asm_signal_exception:
-
- mov a0,xptr
- mov a1,sp
- ldq xpc,sigctxpc(sp)
- ldq v0,sigctxr00(sp) /* restore possible used registers */
- ldq t0,sigctxr01(sp)
- ldq t1,sigctxr02(sp)
- ldq t2,sigctxr03(sp)
- ldq t3,sigctxr04(sp)
- ldq t4,sigctxr05(sp)
- ldq t5,sigctxr06(sp)
- ldq t6,sigctxr07(sp)
- ldq t7,sigctxr08(sp)
- ldq s0,sigctxr09(sp)
- ldq s1,sigctxr10(sp)
- ldq s2,sigctxr11(sp)
- ldq s3,sigctxr12(sp)
- ldq s4,sigctxr13(sp)
- ldq s5,sigctxr14(sp)
- ldq s6,sigctxr15(sp)
- ldq a0,sigctxr16(sp)
- ldq a1,sigctxr17(sp)
- ldq a2,sigctxr18(sp)
- ldq a3,sigctxr19(sp)
- ldq a4,sigctxr20(sp)
- ldq a5,sigctxr21(sp)
- ldq t8,sigctxr22(sp)
- ldq t9,sigctxr23(sp)
- ldq t10,sigctxr24(sp)
- ldq ra,sigctxr26(sp)
- ldq pv,sigctxr27(sp)
- ldq sp,sigctxr30(sp)
- br asm_handle_nat_exception
- .end asm_signal_exception
-
-
/********************* function asm_builtin_monitorenter ***********************
* *
* Does null check and calls monitorenter or throws an exception *
} sigctx_struct;
-/* asm_signal_exception passes exception pointer and the signal context
- structure (contains the saved registers) to the assembler handler which
- restores registers and walks through the Java exception tables.
-*/
-
-void asm_signal_exception(void *xptr, void *sigctx);
-
-
/* NullPointerException signal handler for hardware null pointer check */
void catch_NullPointerException(int sig, int code, sigctx_struct *sigctx)
sigemptyset(&nsig);
sigaddset(&nsig, sig);
sigprocmask(SIG_UNBLOCK, &nsig, NULL); /* unblock signal */
- asm_signal_exception(proto_java_lang_NullPointerException, sigctx);
+ sigctx->sc_regs[REG_ITMP1_XPTR] =
+ (long) proto_java_lang_NullPointerException;
+ sigctx->sc_regs[REG_ITMP2_XPC] = sigctx->sc_pc;
+ sigctx->sc_pc = (long) asm_handle_nat_exception;
+ return;
}
else {
faultaddr += (long) ((instr << 16) >> 16);
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