diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/powerpc/powerpc64/getcontext.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/powerpc/powerpc64/getcontext.S | 127 |
1 files changed, 63 insertions, 64 deletions
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/getcontext.S b/sysdeps/unix/sysv/linux/powerpc/powerpc64/getcontext.S index 279a36d68d..c950316b2f 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/getcontext.S +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/getcontext.S @@ -73,12 +73,12 @@ ENTRY(__novec_getcontext) std r0,(SIGCONTEXT_GP_REGS+(PT_XER*8))(r3) mfcr r0 std r0,(SIGCONTEXT_GP_REGS+(PT_CCR*8))(r3) - - /* Set the return value of swapcontext to "success". R3 is the only + + /* Set the return value of swapcontext to "success". R3 is the only register whose value is not preserved in the saved context. */ li r0,0 std r0,(SIGCONTEXT_GP_REGS+(PT_R3*8))(r3) - + /* Zero fill fields that can't be set in user state or are unused. */ std r0,(SIGCONTEXT_GP_REGS+(PT_MSR*8))(r3) std r0,(SIGCONTEXT_GP_REGS+(34*8))(r3) @@ -87,14 +87,14 @@ ENTRY(__novec_getcontext) std r0,(SIGCONTEXT_GP_REGS+(41*8))(r3) std r0,(SIGCONTEXT_GP_REGS+(42*8))(r3) std r0,(SIGCONTEXT_GP_REGS+(PT_RESULT*8))(r3) - - /* Set the PT_REGS pointer to the address of sigcontext's gp_regs - field. Struct pt_regs and elf_gregset_t are the same thing. + + /* Set the PT_REGS pointer to the address of sigcontext's gp_regs + field. Struct pt_regs and elf_gregset_t are the same thing. We kept the regs field for backwards compatibility with libraries built before we extended sigcontext. */ addi r0,r3,SIGCONTEXT_GP_REGS std r0,SIGCONTEXT_PT_REGS(r3) - + stfd fp0,(SIGCONTEXT_FP_REGS+(PT_R0*8))(r3) stfd fp1,(SIGCONTEXT_FP_REGS+(PT_R1*8))(r3) stfd fp2,(SIGCONTEXT_FP_REGS+(PT_R2*8))(r3) @@ -145,8 +145,8 @@ ENTRY(__novec_getcontext) nop li r3,-1 #endif - - ld r0,128+FRAME_LR_SAVE(r1) + + ld r0,128+FRAME_LR_SAVE(r1) addi r1,r1,128 mtlr r0 blr @@ -159,10 +159,10 @@ compat_symbol (libc, __novec_getcontext, getcontext, GLIBC_2_3) .section ".toc","aw" .LC__dl_hwcap: #ifdef SHARED - .tc _rtld_global[TC],_rtld_global + .tc _rtld_global_ro[TC],_rtld_global_ro #else .tc _dl_hwcap[TC],_dl_hwcap -#endif +#endif .section ".text" ENTRY(__getcontext) @@ -209,12 +209,12 @@ ENTRY(__getcontext) std r0,(SIGCONTEXT_GP_REGS+(PT_XER*8))(r3) mfcr r0 std r0,(SIGCONTEXT_GP_REGS+(PT_CCR*8))(r3) - - /* Set the return value of swapcontext to "success". R3 is the only + + /* Set the return value of swapcontext to "success". R3 is the only register whose value is not preserved in the saved context. */ li r0,0 std r0,(SIGCONTEXT_GP_REGS+(PT_R3*8))(r3) - + /* Zero fill fields that can't be set in user state or are unused. */ std r0,(SIGCONTEXT_GP_REGS+(PT_MSR*8))(r3) std r0,(SIGCONTEXT_GP_REGS+(34*8))(r3) @@ -223,14 +223,14 @@ ENTRY(__getcontext) std r0,(SIGCONTEXT_GP_REGS+(41*8))(r3) std r0,(SIGCONTEXT_GP_REGS+(42*8))(r3) std r0,(SIGCONTEXT_GP_REGS+(PT_RESULT*8))(r3) - - /* Set the PT_REGS pointer to the address of sigcontext's gp_regs - field. Struct pt_regs and elf_gregset_t are the same thing. + + /* Set the PT_REGS pointer to the address of sigcontext's gp_regs + field. Struct pt_regs and elf_gregset_t are the same thing. We kept the regs field for backwards compatibility with libraries built before we extended sigcontext. */ addi r0,r3,SIGCONTEXT_GP_REGS std r0,SIGCONTEXT_PT_REGS(r3) - + stfd fp0,(SIGCONTEXT_FP_REGS+(PT_R0*8))(r3) stfd fp1,(SIGCONTEXT_FP_REGS+(PT_R1*8))(r3) stfd fp2,(SIGCONTEXT_FP_REGS+(PT_R2*8))(r3) @@ -265,120 +265,120 @@ ENTRY(__getcontext) stfd fp30,(SIGCONTEXT_FP_REGS+(PT_R30*8))(r3) stfd fp31,(SIGCONTEXT_FP_REGS+(PT_R31*8))(r3) stfd fp0,(SIGCONTEXT_FP_REGS+(32*8))(r3) - + ld r5,.LC__dl_hwcap@toc(r2) li r10,0 -#ifdef SHARED +#ifdef SHARED /* Load _rtld-global._dl_hwcap. */ - ld r5,RTLD_GLOBAL_DL_HWCAP_OFFSET(r5) -#else + ld r5,RTLD_GLOBAL_DL_HWCAP_OFFSET(r5) +#else ld r5,0(r5) /* Load extern _dl_hwcap. */ #endif andis. r5,r5,(PPC_FEATURE_HAS_ALTIVEC >> 16) beq L(has_no_vec) - + la r10,(SIGCONTEXT_V_RESERVE+8)(r3) la r9,(SIGCONTEXT_V_RESERVE+24)(r3) clrrdi r10,r10,4 clrrdi r9,r9,4 - - stvx v0,0,r10 + + stvx v0,0,r10 stvx v1,0,r9 addi r10,r10,32 addi r9,r9,32 - - stvx v2,0,r10 + + stvx v2,0,r10 stvx v3,0,r9 addi r10,r10,32 addi r9,r9,32 - - stvx v4,0,r10 + + stvx v4,0,r10 stvx v5,0,r9 addi r10,r10,32 addi r9,r9,32 - - stvx v6,0,r10 + + stvx v6,0,r10 stvx v7,0,r9 addi r10,r10,32 addi r9,r9,32 - - stvx v8,0,r10 + + stvx v8,0,r10 stvx v9,0,r9 addi r10,r10,32 addi r9,r9,32 - - stvx v10,0,r10 + + stvx v10,0,r10 stvx v11,0,r9 addi r10,r10,32 addi r9,r9,32 - - stvx v12,0,r10 + + stvx v12,0,r10 stvx v13,0,r9 addi r10,r10,32 addi r9,r9,32 - - stvx v14,0,r10 + + stvx v14,0,r10 stvx v15,0,r9 addi r10,r10,32 addi r9,r9,32 - - stvx v16,0,r10 + + stvx v16,0,r10 stvx v17,0,r9 addi r10,r10,32 addi r9,r9,32 - - stvx v18,0,r10 + + stvx v18,0,r10 stvx v11,0,r9 addi r19,r10,32 addi r9,r9,32 - - stvx v20,0,r10 + + stvx v20,0,r10 stvx v21,0,r9 addi r10,r10,32 addi r9,r9,32 - - stvx v22,0,r10 + + stvx v22,0,r10 stvx v23,0,r9 addi r10,r10,32 addi r9,r9,32 - - stvx v24,0,r10 + + stvx v24,0,r10 stvx v25,0,r9 addi r10,r10,32 addi r9,r9,32 - - stvx v26,0,r10 + + stvx v26,0,r10 stvx v27,0,r9 addi r10,r10,32 addi r9,r9,32 - - stvx v28,0,r10 + + stvx v28,0,r10 stvx v29,0,r9 addi r10,r10,32 addi r9,r9,32 - - stvx v30,0,r10 + + stvx v30,0,r10 stvx v31,0,r9 addi r10,r10,32 addi r9,r9,32 - - stvx v10,0,r10 + + stvx v10,0,r10 stvx v11,0,r9 addi r10,r10,32 addi r9,r9,32 - + mfvscr v0 mfspr r0,VRSAVE stvx v0,0,r10 stw r0,0(9) - + L(has_no_vec): -/* +/* Store either a NULL or a quadword aligned pointer to the Vector register array into *v_regs. */ std r10,(SIGCONTEXT_V_REGS_PTR)(r3) - + addi r5,r3,UCONTEXT_SIGMASK li r4,0 li r3,SIG_BLOCK @@ -394,12 +394,11 @@ L(has_no_vec): nop li r3,-1 #endif - - ld r0,128+FRAME_LR_SAVE(r1) + + ld r0,128+FRAME_LR_SAVE(r1) addi r1,r1,128 mtlr r0 blr PSEUDO_END(__getcontext) versioned_symbol (libc, __getcontext, getcontext, GLIBC_2_3_4) - |