pkubaj commented on code in PR #3696:
URL: https://github.com/apache/brpc/pull/3696#discussion_r4501292690
##########
src/bthread/context.h:
##########
@@ -45,6 +45,9 @@
#elif __riscv
#define BTHREAD_CONTEXT_PLATFORM_linux_riscv64
#define BTHREAD_CONTEXT_CALL_CONVENTION
+ #elif defined(__powerpc64__) && _CALL_ELF == 2
Review Comment:
Done.
##########
src/bthread/context.cpp:
##########
@@ -1012,3 +1012,253 @@ __asm (
" call _exit\n"
);
#endif
+
+#if defined(BTHREAD_CONTEXT_PLATFORM_linux_ppc64) &&
defined(BTHREAD_CONTEXT_COMPILER_gcc)
+__asm (
+".text\n"
+".align 2\n"
+".globl bthread_jump_fcontext\n"
+".type bthread_jump_fcontext, @function\n"
+"bthread_jump_fcontext:\n"
+" addis %r2, %r12, .TOC.-bthread_jump_fcontext@ha\n"
+" addi %r2, %r2, .TOC.-bthread_jump_fcontext@l\n"
+" .localentry bthread_jump_fcontext, . - bthread_jump_fcontext\n"
+" # reserve space on stack\n"
+" subi %r1, %r1, 528\n"
+" std %r14, 352(%r1)\n"
+" std %r15, 360(%r1)\n"
+" std %r16, 368(%r1)\n"
+" std %r17, 376(%r1)\n"
+" std %r18, 384(%r1)\n"
+" std %r19, 392(%r1)\n"
+" std %r20, 400(%r1)\n"
+" std %r21, 408(%r1)\n"
+" std %r22, 416(%r1)\n"
+" std %r23, 424(%r1)\n"
+" std %r24, 432(%r1)\n"
+" std %r25, 440(%r1)\n"
+" std %r26, 448(%r1)\n"
+" std %r27, 456(%r1)\n"
+" std %r28, 464(%r1)\n"
+" std %r29, 472(%r1)\n"
+" std %r30, 480(%r1)\n"
+" std %r31, 488(%r1)\n"
+" # save CR\n"
+" mfcr %r0\n"
+" std %r0, 496(%r1)\n"
+" # save LR, and LR as PC\n"
+" mflr %r0\n"
+" std %r0, 504(%r1)\n"
+" std %r0, 512(%r1)\n"
+" # the fourth argument (preserve_fpu) is ignored: the compiler may keep\n"
+" # any value in the non-volatile FPRs/VRs across the call\n"
+" stfd %f14, 200(%r1)\n"
+" stfd %f15, 208(%r1)\n"
+" stfd %f16, 216(%r1)\n"
+" stfd %f17, 224(%r1)\n"
+" stfd %f18, 232(%r1)\n"
+" stfd %f19, 240(%r1)\n"
+" stfd %f20, 248(%r1)\n"
+" stfd %f21, 256(%r1)\n"
+" stfd %f22, 264(%r1)\n"
+" stfd %f23, 272(%r1)\n"
+" stfd %f24, 280(%r1)\n"
+" stfd %f25, 288(%r1)\n"
+" stfd %f26, 296(%r1)\n"
+" stfd %f27, 304(%r1)\n"
+" stfd %f28, 312(%r1)\n"
+" stfd %f29, 320(%r1)\n"
+" stfd %f30, 328(%r1)\n"
+" stfd %f31, 336(%r1)\n"
+" mffs %f0\n"
+" stfd %f0, 344(%r1)\n"
+#ifdef __ALTIVEC__
+" mfspr %r0, 256\n"
+" std %r0, 192(%r1)\n"
+" li %r11, 0\n"
+" stvx %v20, %r1, %r11\n"
+" li %r11, 16\n"
+" stvx %v21, %r1, %r11\n"
+" li %r11, 32\n"
+" stvx %v22, %r1, %r11\n"
+" li %r11, 48\n"
+" stvx %v23, %r1, %r11\n"
+" li %r11, 64\n"
+" stvx %v24, %r1, %r11\n"
+" li %r11, 80\n"
+" stvx %v25, %r1, %r11\n"
+" li %r11, 96\n"
+" stvx %v26, %r1, %r11\n"
+" li %r11, 112\n"
+" stvx %v27, %r1, %r11\n"
+" li %r11, 128\n"
+" stvx %v28, %r1, %r11\n"
+" li %r11, 144\n"
+" stvx %v29, %r1, %r11\n"
+" li %r11, 160\n"
+" stvx %v30, %r1, %r11\n"
+" li %r11, 176\n"
+" stvx %v31, %r1, %r11\n"
+#endif
+" # store RSP (pointing to context-data) in R3\n"
+" std %r1, 0(%r3)\n"
+" # restore RSP (pointing to context-data) from R4\n"
+" mr %r1, %r4\n"
+#ifdef __ALTIVEC__
+" li %r11, 0\n"
+" lvx %v20, %r1, %r11\n"
+" li %r11, 16\n"
+" lvx %v21, %r1, %r11\n"
+" li %r11, 32\n"
+" lvx %v22, %r1, %r11\n"
+" li %r11, 48\n"
+" lvx %v23, %r1, %r11\n"
+" li %r11, 64\n"
+" lvx %v24, %r1, %r11\n"
+" li %r11, 80\n"
+" lvx %v25, %r1, %r11\n"
+" li %r11, 96\n"
+" lvx %v26, %r1, %r11\n"
+" li %r11, 112\n"
+" lvx %v27, %r1, %r11\n"
+" li %r11, 128\n"
+" lvx %v28, %r1, %r11\n"
+" li %r11, 144\n"
+" lvx %v29, %r1, %r11\n"
+" li %r11, 160\n"
+" lvx %v30, %r1, %r11\n"
+" li %r11, 176\n"
+" lvx %v31, %r1, %r11\n"
+" ld %r0, 192(%r1)\n"
+" mtspr 256, %r0\n"
+#endif
+" lfd %f0, 344(%r1)\n"
+" mtfsf 0xff, %f0\n"
+" lfd %f14, 200(%r1)\n"
+" lfd %f15, 208(%r1)\n"
+" lfd %f16, 216(%r1)\n"
+" lfd %f17, 224(%r1)\n"
+" lfd %f18, 232(%r1)\n"
+" lfd %f19, 240(%r1)\n"
+" lfd %f20, 248(%r1)\n"
+" lfd %f21, 256(%r1)\n"
+" lfd %f22, 264(%r1)\n"
+" lfd %f23, 272(%r1)\n"
+" lfd %f24, 280(%r1)\n"
+" lfd %f25, 288(%r1)\n"
+" lfd %f26, 296(%r1)\n"
+" lfd %f27, 304(%r1)\n"
+" lfd %f28, 312(%r1)\n"
+" lfd %f29, 320(%r1)\n"
+" lfd %f30, 328(%r1)\n"
+" lfd %f31, 336(%r1)\n"
+" ld %r14, 352(%r1)\n"
+" ld %r15, 360(%r1)\n"
+" ld %r16, 368(%r1)\n"
+" ld %r17, 376(%r1)\n"
+" ld %r18, 384(%r1)\n"
+" ld %r19, 392(%r1)\n"
+" ld %r20, 400(%r1)\n"
+" ld %r21, 408(%r1)\n"
+" ld %r22, 416(%r1)\n"
+" ld %r23, 424(%r1)\n"
+" ld %r24, 432(%r1)\n"
+" ld %r25, 440(%r1)\n"
+" ld %r26, 448(%r1)\n"
+" ld %r27, 456(%r1)\n"
+" ld %r28, 464(%r1)\n"
+" ld %r29, 472(%r1)\n"
+" ld %r30, 480(%r1)\n"
+" ld %r31, 488(%r1)\n"
+" # restore CR\n"
+" ld %r0, 496(%r1)\n"
+" mtcr %r0\n"
+" # restore LR\n"
+" ld %r0, 504(%r1)\n"
+" mtlr %r0\n"
+" # load PC into CTR (and R12 for the callee's TOC setup)\n"
+" ld %r12, 512(%r1)\n"
+" mtctr %r12\n"
+" # adjust stack\n"
+" addi %r1, %r1, 528\n"
+" # use third arg as return value after jump\n"
+" # and as first arg in context function\n"
+" mr %r3, %r5\n"
+" # jump to context\n"
+" bctr\n"
+".size bthread_jump_fcontext, .-bthread_jump_fcontext\n"
+".section .note.GNU-stack,\"\",%progbits\n"
Review Comment:
Done.
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
