diff options
Diffstat (limited to 'include/ppc_asm.tmpl')
| -rw-r--r-- | include/ppc_asm.tmpl | 55 |
1 files changed, 26 insertions, 29 deletions
diff --git a/include/ppc_asm.tmpl b/include/ppc_asm.tmpl index 0019d46..84de146 100644 --- a/include/ppc_asm.tmpl +++ b/include/ppc_asm.tmpl @@ -50,13 +50,13 @@ .text 2 ; \ 0: .long .LCTOC1-1f ; \ .text ; \ -1: mflr r14 ; \ - lwz r0,0b-1b(r14) ; \ - add r14,r0,r14 ; +1: mflr r12 ; \ + lwz r0,0b-1b(r12) ; \ + add r12,r0,r12 ; #define GOT_ENTRY(NAME) .L_ ## NAME = . - .LCTOC1 ; .long NAME -#define GOT(NAME) .L_ ## NAME (r14) +#define GOT(NAME) .L_ ## NAME (r12) /*************************************************************************** @@ -257,46 +257,43 @@ * OFFSET values only; they must be relocated first before they can * be used! */ -#define STD_EXCEPTION(n, label, hdlr) \ - . = n; \ -label: \ - EXCEPTION_PROLOG(SRR0, SRR1); \ - lwz r3,GOT(transfer_to_handler); \ - mtlr r3; \ - addi r3,r1,STACK_FRAME_OVERHEAD; \ - li r20,MSR_KERNEL; \ +#define COPY_EE(d, s) rlwimi d,s,0,16,16 +#define NOCOPY(d, s) +#define EXC_XFER_TEMPLATE(label, hdlr, msr, copyee) \ + bl 1f; \ +1: mflr r20; \ + lwz r20,(.L_ ## label)-1b+8(r20); \ + mtlr r20; \ + li r20,msr; \ + copyee(r20,r23); \ rlwimi r20,r23,0,25,25; \ blrl; \ .L_ ## label : \ .long hdlr - _start + _START_OFFSET; \ - .long int_return - _start + _START_OFFSET + .long int_return - _start + _START_OFFSET; \ + .long transfer_to_handler - _start + _START_OFFSET + +#define STD_EXCEPTION(n, label, hdlr) \ + . = n; \ +label: \ + EXCEPTION_PROLOG(SRR0, SRR1); \ + addi r3,r1,STACK_FRAME_OVERHEAD; \ + EXC_XFER_TEMPLATE(label, hdlr, MSR_KERNEL, NOCOPY) \ #define CRIT_EXCEPTION(n, label, hdlr) \ . = n; \ label: \ EXCEPTION_PROLOG(CSRR0, CSRR1); \ - lwz r3,GOT(transfer_to_handler); \ - mtlr r3; \ addi r3,r1,STACK_FRAME_OVERHEAD; \ - li r20,(MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE)); \ - rlwimi r20,r23,0,25,25; \ - blrl; \ -.L_ ## label : \ - .long hdlr - _start + _START_OFFSET; \ - .long crit_return - _start + _START_OFFSET + EXC_XFER_TEMPLATE(label, hdlr, \ + MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE), NOCOPY) \ #define MCK_EXCEPTION(n, label, hdlr) \ . = n; \ label: \ EXCEPTION_PROLOG(MCSRR0, MCSRR1); \ - lwz r3,GOT(transfer_to_handler); \ - mtlr r3; \ addi r3,r1,STACK_FRAME_OVERHEAD; \ - li r20,(MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE)); \ - rlwimi r20,r23,0,25,25; \ - blrl; \ -.L_ ## label : \ - .long hdlr - _start + _START_OFFSET; \ - .long mck_return - _start + _START_OFFSET + EXC_XFER_TEMPLATE(label, hdlr, \ + MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE), NOCOPY) \ #endif /* __PPC_ASM_TMPL__ */ |