455 lines
12 KiB
C
455 lines
12 KiB
C
/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
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/*
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* rseq-ppc-bits.h
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*
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* (C) Copyright 2016-2018 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
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* (C) Copyright 2016-2018 - Boqun Feng <boqun.feng@gmail.com>
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*/
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#include "rseq-bits-template.h"
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#if defined(RSEQ_TEMPLATE_MO_RELAXED) && \
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(defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID))
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static inline __attribute__((always_inline))
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int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_storev)(intptr_t *v, intptr_t expect, intptr_t newv, int cpu)
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{
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RSEQ_INJECT_C(9)
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__asm__ __volatile__ goto (
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RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
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RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
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#ifdef RSEQ_COMPARE_TWICE
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RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
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RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
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#endif
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/* Start rseq by storing table entry pointer into rseq_cs. */
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RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
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/* cmp cpuid */
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RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
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RSEQ_INJECT_ASM(3)
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/* cmp @v equal to @expect */
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RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail])
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RSEQ_INJECT_ASM(4)
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#ifdef RSEQ_COMPARE_TWICE
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/* cmp cpuid */
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RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
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/* cmp @v equal to @expect */
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RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2])
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#endif
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/* final store */
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RSEQ_ASM_OP_FINAL_STORE(newv, v, 2)
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RSEQ_INJECT_ASM(5)
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RSEQ_ASM_DEFINE_ABORT(4, abort)
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: /* gcc asm goto does not allow outputs */
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: [cpu_id] "r" (cpu),
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[current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
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[rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
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[v] "m" (*v),
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[expect] "r" (expect),
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[newv] "r" (newv)
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RSEQ_INJECT_INPUT
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: "memory", "cc", "r17"
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RSEQ_INJECT_CLOBBER
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: abort, cmpfail
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#ifdef RSEQ_COMPARE_TWICE
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, error1, error2
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#endif
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);
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rseq_after_asm_goto();
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return 0;
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abort:
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rseq_after_asm_goto();
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RSEQ_INJECT_FAILED
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return -1;
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cmpfail:
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rseq_after_asm_goto();
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return 1;
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#ifdef RSEQ_COMPARE_TWICE
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error1:
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rseq_after_asm_goto();
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rseq_bug("cpu_id comparison failed");
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error2:
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rseq_after_asm_goto();
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rseq_bug("expected value comparison failed");
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#endif
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}
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static inline __attribute__((always_inline))
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int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpnev_storeoffp_load)(intptr_t *v, intptr_t expectnot,
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long voffp, intptr_t *load, int cpu)
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{
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RSEQ_INJECT_C(9)
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__asm__ __volatile__ goto (
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RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
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RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
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#ifdef RSEQ_COMPARE_TWICE
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RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
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RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
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#endif
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/* Start rseq by storing table entry pointer into rseq_cs. */
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RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
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/* cmp cpuid */
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RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
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RSEQ_INJECT_ASM(3)
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/* cmp @v not equal to @expectnot */
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RSEQ_ASM_OP_CMPNE(v, expectnot, %l[cmpfail])
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RSEQ_INJECT_ASM(4)
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#ifdef RSEQ_COMPARE_TWICE
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/* cmp cpuid */
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RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
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/* cmp @v not equal to @expectnot */
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RSEQ_ASM_OP_CMPNE(v, expectnot, %l[error2])
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#endif
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/* load the value of @v */
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RSEQ_ASM_OP_R_LOAD(v)
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/* store it in @load */
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RSEQ_ASM_OP_R_STORE(load)
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/* dereference voffp(v) */
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RSEQ_ASM_OP_R_LOADX(voffp)
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/* final store the value at voffp(v) */
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RSEQ_ASM_OP_R_FINAL_STORE(v, 2)
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RSEQ_INJECT_ASM(5)
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RSEQ_ASM_DEFINE_ABORT(4, abort)
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: /* gcc asm goto does not allow outputs */
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: [cpu_id] "r" (cpu),
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[current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
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[rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
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/* final store input */
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[v] "m" (*v),
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[expectnot] "r" (expectnot),
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[voffp] "b" (voffp),
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[load] "m" (*load)
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RSEQ_INJECT_INPUT
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: "memory", "cc", "r17"
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RSEQ_INJECT_CLOBBER
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: abort, cmpfail
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#ifdef RSEQ_COMPARE_TWICE
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, error1, error2
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#endif
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);
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rseq_after_asm_goto();
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return 0;
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abort:
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rseq_after_asm_goto();
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RSEQ_INJECT_FAILED
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return -1;
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cmpfail:
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rseq_after_asm_goto();
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return 1;
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#ifdef RSEQ_COMPARE_TWICE
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error1:
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rseq_after_asm_goto();
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rseq_bug("cpu_id comparison failed");
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error2:
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rseq_after_asm_goto();
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rseq_bug("expected value comparison failed");
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#endif
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}
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static inline __attribute__((always_inline))
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int RSEQ_TEMPLATE_IDENTIFIER(rseq_addv)(intptr_t *v, intptr_t count, int cpu)
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{
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RSEQ_INJECT_C(9)
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__asm__ __volatile__ goto (
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RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
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#ifdef RSEQ_COMPARE_TWICE
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RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
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#endif
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/* Start rseq by storing table entry pointer into rseq_cs. */
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RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
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/* cmp cpuid */
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RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
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RSEQ_INJECT_ASM(3)
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#ifdef RSEQ_COMPARE_TWICE
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/* cmp cpuid */
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RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
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#endif
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/* load the value of @v */
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RSEQ_ASM_OP_R_LOAD(v)
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/* add @count to it */
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RSEQ_ASM_OP_R_ADD(count)
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/* final store */
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RSEQ_ASM_OP_R_FINAL_STORE(v, 2)
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RSEQ_INJECT_ASM(4)
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RSEQ_ASM_DEFINE_ABORT(4, abort)
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: /* gcc asm goto does not allow outputs */
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: [cpu_id] "r" (cpu),
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[current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
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[rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
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/* final store input */
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[v] "m" (*v),
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[count] "r" (count)
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RSEQ_INJECT_INPUT
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: "memory", "cc", "r17"
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RSEQ_INJECT_CLOBBER
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: abort
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#ifdef RSEQ_COMPARE_TWICE
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, error1
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#endif
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);
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rseq_after_asm_goto();
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return 0;
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abort:
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rseq_after_asm_goto();
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RSEQ_INJECT_FAILED
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return -1;
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#ifdef RSEQ_COMPARE_TWICE
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error1:
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rseq_after_asm_goto();
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rseq_bug("cpu_id comparison failed");
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#endif
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}
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static inline __attribute__((always_inline))
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int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_cmpeqv_storev)(intptr_t *v, intptr_t expect,
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intptr_t *v2, intptr_t expect2,
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intptr_t newv, int cpu)
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{
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RSEQ_INJECT_C(9)
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__asm__ __volatile__ goto (
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RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
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RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
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#ifdef RSEQ_COMPARE_TWICE
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RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
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RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
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RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error3])
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#endif
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/* Start rseq by storing table entry pointer into rseq_cs. */
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RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
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/* cmp cpuid */
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RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
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RSEQ_INJECT_ASM(3)
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/* cmp @v equal to @expect */
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RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail])
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RSEQ_INJECT_ASM(4)
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/* cmp @v2 equal to @expct2 */
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RSEQ_ASM_OP_CMPEQ(v2, expect2, %l[cmpfail])
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RSEQ_INJECT_ASM(5)
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#ifdef RSEQ_COMPARE_TWICE
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/* cmp cpuid */
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RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
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/* cmp @v equal to @expect */
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RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2])
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/* cmp @v2 equal to @expct2 */
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RSEQ_ASM_OP_CMPEQ(v2, expect2, %l[error3])
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#endif
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/* final store */
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RSEQ_ASM_OP_FINAL_STORE(newv, v, 2)
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RSEQ_INJECT_ASM(6)
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RSEQ_ASM_DEFINE_ABORT(4, abort)
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: /* gcc asm goto does not allow outputs */
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: [cpu_id] "r" (cpu),
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[current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
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[rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
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/* cmp2 input */
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[v2] "m" (*v2),
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[expect2] "r" (expect2),
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/* final store input */
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[v] "m" (*v),
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[expect] "r" (expect),
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[newv] "r" (newv)
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RSEQ_INJECT_INPUT
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: "memory", "cc", "r17"
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RSEQ_INJECT_CLOBBER
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: abort, cmpfail
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#ifdef RSEQ_COMPARE_TWICE
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, error1, error2, error3
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#endif
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);
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rseq_after_asm_goto();
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return 0;
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abort:
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rseq_after_asm_goto();
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RSEQ_INJECT_FAILED
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return -1;
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cmpfail:
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rseq_after_asm_goto();
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return 1;
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#ifdef RSEQ_COMPARE_TWICE
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error1:
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rseq_after_asm_goto();
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rseq_bug("cpu_id comparison failed");
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error2:
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rseq_after_asm_goto();
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rseq_bug("1st expected value comparison failed");
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error3:
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rseq_after_asm_goto();
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rseq_bug("2nd expected value comparison failed");
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#endif
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}
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#endif /* #if defined(RSEQ_TEMPLATE_MO_RELAXED) &&
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(defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID)) */
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#if (defined(RSEQ_TEMPLATE_MO_RELAXED) || defined(RSEQ_TEMPLATE_MO_RELEASE)) && \
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(defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID))
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static inline __attribute__((always_inline))
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int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_trystorev_storev)(intptr_t *v, intptr_t expect,
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intptr_t *v2, intptr_t newv2,
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intptr_t newv, int cpu)
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{
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RSEQ_INJECT_C(9)
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__asm__ __volatile__ goto (
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RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
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RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
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#ifdef RSEQ_COMPARE_TWICE
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RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
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RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
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#endif
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/* Start rseq by storing table entry pointer into rseq_cs. */
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RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
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/* cmp cpuid */
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RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
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RSEQ_INJECT_ASM(3)
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/* cmp @v equal to @expect */
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RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail])
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RSEQ_INJECT_ASM(4)
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#ifdef RSEQ_COMPARE_TWICE
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/* cmp cpuid */
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RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
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/* cmp @v equal to @expect */
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RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2])
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#endif
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/* try store */
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RSEQ_ASM_OP_STORE(newv2, v2)
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RSEQ_INJECT_ASM(5)
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#ifdef RSEQ_TEMPLATE_MO_RELEASE
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/* for 'release' */
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"lwsync\n\t"
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#endif
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/* final store */
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RSEQ_ASM_OP_FINAL_STORE(newv, v, 2)
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RSEQ_INJECT_ASM(6)
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RSEQ_ASM_DEFINE_ABORT(4, abort)
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: /* gcc asm goto does not allow outputs */
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: [cpu_id] "r" (cpu),
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[current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
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[rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
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/* try store input */
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[v2] "m" (*v2),
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[newv2] "r" (newv2),
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/* final store input */
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[v] "m" (*v),
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[expect] "r" (expect),
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[newv] "r" (newv)
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RSEQ_INJECT_INPUT
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: "memory", "cc", "r17"
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RSEQ_INJECT_CLOBBER
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: abort, cmpfail
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#ifdef RSEQ_COMPARE_TWICE
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, error1, error2
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#endif
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);
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rseq_after_asm_goto();
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return 0;
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abort:
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rseq_after_asm_goto();
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RSEQ_INJECT_FAILED
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return -1;
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cmpfail:
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rseq_after_asm_goto();
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return 1;
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#ifdef RSEQ_COMPARE_TWICE
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error1:
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rseq_after_asm_goto();
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rseq_bug("cpu_id comparison failed");
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error2:
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rseq_after_asm_goto();
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rseq_bug("expected value comparison failed");
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#endif
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}
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static inline __attribute__((always_inline))
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int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_trymemcpy_storev)(intptr_t *v, intptr_t expect,
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void *dst, void *src, size_t len,
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intptr_t newv, int cpu)
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{
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RSEQ_INJECT_C(9)
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__asm__ __volatile__ goto (
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RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
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RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
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#ifdef RSEQ_COMPARE_TWICE
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RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
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RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
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#endif
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/* setup for mempcy */
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"mr %%r19, %[len]\n\t"
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"mr %%r20, %[src]\n\t"
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"mr %%r21, %[dst]\n\t"
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/* Start rseq by storing table entry pointer into rseq_cs. */
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RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
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/* cmp cpuid */
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RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
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RSEQ_INJECT_ASM(3)
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/* cmp @v equal to @expect */
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RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail])
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RSEQ_INJECT_ASM(4)
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#ifdef RSEQ_COMPARE_TWICE
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/* cmp cpuid */
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RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
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/* cmp @v equal to @expect */
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RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2])
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#endif
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/* try memcpy */
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RSEQ_ASM_OP_R_MEMCPY()
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RSEQ_INJECT_ASM(5)
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#ifdef RSEQ_TEMPLATE_MO_RELEASE
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/* for 'release' */
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"lwsync\n\t"
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#endif
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/* final store */
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RSEQ_ASM_OP_FINAL_STORE(newv, v, 2)
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RSEQ_INJECT_ASM(6)
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/* teardown */
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RSEQ_ASM_DEFINE_ABORT(4, abort)
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: /* gcc asm goto does not allow outputs */
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: [cpu_id] "r" (cpu),
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[current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
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[rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
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/* final store input */
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[v] "m" (*v),
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[expect] "r" (expect),
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[newv] "r" (newv),
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/* try memcpy input */
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[dst] "r" (dst),
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[src] "r" (src),
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[len] "r" (len)
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RSEQ_INJECT_INPUT
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: "memory", "cc", "r17", "r18", "r19", "r20", "r21"
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RSEQ_INJECT_CLOBBER
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: abort, cmpfail
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#ifdef RSEQ_COMPARE_TWICE
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, error1, error2
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#endif
|
|
);
|
|
rseq_after_asm_goto();
|
|
return 0;
|
|
abort:
|
|
rseq_after_asm_goto();
|
|
RSEQ_INJECT_FAILED
|
|
return -1;
|
|
cmpfail:
|
|
rseq_after_asm_goto();
|
|
return 1;
|
|
#ifdef RSEQ_COMPARE_TWICE
|
|
error1:
|
|
rseq_after_asm_goto();
|
|
rseq_bug("cpu_id comparison failed");
|
|
error2:
|
|
rseq_after_asm_goto();
|
|
rseq_bug("expected value comparison failed");
|
|
#endif
|
|
}
|
|
|
|
#endif /* #if (defined(RSEQ_TEMPLATE_MO_RELAXED) || defined(RSEQ_TEMPLATE_MO_RELEASE)) &&
|
|
(defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID)) */
|
|
|
|
#include "rseq-bits-reset.h"
|