diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/vppinfra/longjmp.S | 140 |
1 files changed, 93 insertions, 47 deletions
diff --git a/src/vppinfra/longjmp.S b/src/vppinfra/longjmp.S index c151343cdc3..a3435ccb969 100644 --- a/src/vppinfra/longjmp.S +++ b/src/vppinfra/longjmp.S @@ -209,19 +209,6 @@ cdecl(clib_calljmp): #elif defined(__powerpc64__) - .text - -#define _prologue(n) \ - .align 2 ; \ - .globl n, .##n ; \ - .section ".opd", "aw" ; \ - .align 3 ; \ -n: .quad .##n, .TOC.@tocbase, 0 ; \ - .previous ; \ - .size n, 24 ; \ - .type .##n, @function ; \ -.##n: - #define _foreach_14_31 \ _ (14, 0) _ (15, 1) _ (16, 2) _ (17, 3) _ (18, 4) _ (19, 5) \ _ (20, 6) _ (21, 7) _ (22, 8) _ (23, 9) _ (24, 10) _ (25, 11) \ @@ -237,7 +224,53 @@ _ (26, 6) _ (27, 7) _ (28, 8) _ (29, 9) _ (30, 10) _ (31, 11) #define CLIB_POWERPC_ALTIVEC_N_REGS 0 #endif -_prologue (cdecl(clib_setjmp)) +#if _CALL_ELF == 2 + +#define _prologue(n) \ + .globl n ; \ + .p2align 4 ; \ + .type n, @function ; \ +n: ; \ +.L##n##_begin: ; + +#define _gep_lep(n) \ +.L##n##_gep: ; \ + addis 2, 12, .TOC.-.L##n##_gep@ha ; \ + addi 2, 2, .TOC.-.L##n##_gep@l ; \ +.L##n##_lep: ; \ + .localentry n, .L##n##_lep-.L##n##_gep + +#else /* _CALL_ELF == 1 */ + +#define _prologue(n) \ + .globl n ; \ + .p2align 4 ; \ + .type .##n, @function ; \ + .section ".opd", "aw" ,@progbits ; \ +n: ; \ + .p2align 3 ; \ + .quad .L##n##_begin ; \ + .quad .TOC.@tocbase ; \ + .quad 0 ; \ + .text ; \ +.L##n##_begin: ; + +#endif + +#define _epilogue(n) \ + .long 0 ; \ + .quad 0 ; \ +.L##n##_end: ; \ + .size n, .L##n##_end-.L##n##_begin + +#if _CALL_ELF == 2 + .abiversion 2 + .section ".text" +#else + .text +#endif + +_prologue(clib_setjmp) mflr 0 std 0, 8*0(3) std 1, 8*1(3) @@ -267,10 +300,10 @@ _prologue (cdecl(clib_setjmp)) /* Return value. */ mr 3, 4 - blr +_epilogue(clib_setjmp) -_prologue (cdecl(clib_longjmp)) +_prologue(clib_longjmp) ld 0, 8*0(3) mtlr 0 ld 1, 8*1(3) @@ -300,46 +333,59 @@ _prologue (cdecl(clib_longjmp)) /* Return value. */ mr 3, 4 - blr - - .globl cdecl(clib_calljmp) - .section ".opd","aw" - .align 3 -cdecl(clib_calljmp): - .quad .L.cdecl(clib_calljmp),.TOC.@tocbase,0 - .previous - .type cdecl(clib_calljmp), @function -.L.cdecl(clib_calljmp): - mflr 0 - mr 9,3 - std 0,16(1) - stdu 1,-112(1) -#APP - std 1,-8(5) - addi 5,5,-256 - mr 1,5 -#NO_APP +_epilogue(clib_longjmp) + +#if _CALL_ELF == 2 +_prologue(clib_calljmp) +_gep_lep(clib_calljmp) + mflr 0 /* get link register into r0 */ + std 0,16(1) /* store r0 into the stack frame */ + stdu 1,-32(1) /* move sp down for one frame */ + mr 12,3 /* move func pointer to r12 */ + mr 3,4 /* pass func_arg as first arg */ + std 1,-8(5) /* store old sp into the top of the new stack */ + addi 5,5,-256 /* stack_addr =- 256 */ + mr 1,5 /* set new sp */ + mtctr 12 /* put function pointer into CTR register */ + std 2,24(1) /* store TOC pointer into stack frame */ + bctrl /* unconditional branch to counter register */ + ld 2,24(1) /* load TOC pointer from stack frame */ + addi 1,1,256 /* go back to the start of the new stack */ + ld 1,-8(1) /* load old sp */ + addi 1,1,32 /* move sp back to previous frame */ + ld 0,16(1) /* get old link reg value from the stack */ + mtlr 0 /* restore link reg value */ + blr +_epilogue(clib_calljmp) + +#else /* v1 ABI */ + +_prologue(clib_calljmp) + mflr 0 /* get link register into r0 */ + mr 9,3 /* store function pointer into the r9 */ + std 0,16(1) /* store r0 into the stack frame */ + stdu 1,-112(1) /* move sp down for one frame */ + std 1,-8(5) /* store old sp into the top of the new stack */ + addi 5,5,-256 /* stack_addr =- 256 */ + mr 1,5 /* set new sp */ ld 10,0(9) - std 2,40(1) + std 2,40(1) /* store TOC pointer into the stack */ mr 3,4 mtctr 10 ld 11,16(9) ld 2,8(9) - bctrl - ld 2,40(1) -#APP - addi 1,1,256 - ld 1,-8(1) -#NO_APP - addi 1,1,112 - ld 0,16(1) + bctrl /* unconditional branch to counter register */ + ld 2,40(1) /* load TOC pointer from the stack */ + addi 1,1,256 /* go back to the start of the new stack */ + ld 1,-8(1) /* load the old sp */ + addi 1,1,112 /* move sp back to previous frame */ + ld 0,16(1) /* restore link register from the stack frame */ mtlr 0 blr - .long 0 - .byte 0,0,0,1,128,0,0,0 - .size cdecl(clib_calljmp),.-.L.cdecl(clib_calljmp) +_epilogue(clib_calljmp) +#endif #elif defined(__powerpc__) #define _foreach_14_31 \ |