From patchwork Tue Jan 5 17:19:30 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Henderson X-Patchwork-Id: 356894 Delivered-To: patch@linaro.org Received: by 2002:a17:906:4755:0:0:0:0 with SMTP id j21csp311660ejs; Tue, 5 Jan 2021 09:38:49 -0800 (PST) X-Google-Smtp-Source: ABdhPJxmE1jhQG//rTqW+YPg2pdrlPGeg9idq6nwjnRv9QtpbsI+mIhMbPFowdFhi3MgYuiMcCI/ X-Received: by 2002:a5b:2cf:: with SMTP id h15mr662627ybp.475.1609868329806; Tue, 05 Jan 2021 09:38:49 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1609868329; cv=none; d=google.com; s=arc-20160816; b=KBy98FWHzO244kAPra/rj5+gl3ngadTAfdiyj+XJ5nFyr/hmwIPqvy9OYihZNJUDzA T+vRr0XD5JbQ+xO+GllWwoWNGW24RR4ofdanez4xSoFwfM3036SzGp6rQiX1hGwrrIXx v/Bu/lYGz/Awc3DqVp4Z89JSMTsSPv/zRgfxaSj4s2CP8whpM+/mmEtSI6dQ2mNe1dmg abTy+64wX323He7b0gaV+rIbNV5oV4KH5q19FeGPWF4tQCdgiICj7vBa3C2coIIZuz2d 3F3L/zGAsE28a5od87w9S13sH9BQK+R91CVG1TOy2t9MEH4rCxUZmr6VZ14VaHVHfYba bScQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:cc:list-subscribe:list-help:list-post:list-archive :list-unsubscribe:list-id:precedence:content-transfer-encoding :mime-version:references:in-reply-to:message-id:date:subject:to:from :dkim-signature; bh=T8AfGj+HO8ldfN1QyJhTtl82SWRrf2P8eJp7eJUkZZU=; b=lX+ax3un+kGdnOXvtkox/iOVsq+GiC2/QVYpI8J4j7BT+SIFZPrIlXd4JyIgHvOrXK +1XSrHQiF/vavexVG3/BtyZmnrqhIx+ZEYWS6cB65jtfJBtzFu9l93sjeu4gUmRp2scl ojMOVnQf4t9VIzA7BZD8o8SXpUdvjAKJyWsq3SifPa/x57hfefw2FRR5p56XmhLYyIsi LoT8KIQbvlZzN/0K0tH4tV2pyjy+/xcuj+EIGDqwvx1OADFitim28ALXgRUcSqq5jBSF 1vl5aaZ8Oq5W/pMZf6j4PQG43oJ/Ptcz3VZXhsSLLsSn1cP9PzOQzdYXZYG1ydDM8577 QmSQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=qlzAktpO; spf=pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+patch=linaro.org@nongnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Return-Path: Received: from lists.gnu.org (lists.gnu.org. [209.51.188.17]) by mx.google.com with ESMTPS id y69si452447ybe.493.2021.01.05.09.38.49 for (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Tue, 05 Jan 2021 09:38:49 -0800 (PST) Received-SPF: pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=qlzAktpO; spf=pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+patch=linaro.org@nongnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: from localhost ([::1]:54894 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kwqID-00011B-5O for patch@linaro.org; Tue, 05 Jan 2021 12:38:49 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:51618) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kwq0d-0002S0-Eh for qemu-devel@nongnu.org; Tue, 05 Jan 2021 12:20:40 -0500 Received: from mail-pg1-x533.google.com ([2607:f8b0:4864:20::533]:39701) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1kwq0b-0006cy-J9 for qemu-devel@nongnu.org; Tue, 05 Jan 2021 12:20:39 -0500 Received: by mail-pg1-x533.google.com with SMTP id 30so280256pgr.6 for ; Tue, 05 Jan 2021 09:20:36 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=T8AfGj+HO8ldfN1QyJhTtl82SWRrf2P8eJp7eJUkZZU=; b=qlzAktpOKCnDylI1FjbM94qXbyRiFHhTd+zdJ49C52FWwRzQtUd1ODJMm5qfdelsxI IpXNC0FA82zPlinEThJAT0JeaVWMk69zb3i70MeoU5BI+04HulFgJFx2IGlRqBTlEmXg ZIdndJ/p4eJQMTC0bddfuv3sWqOzn8LFkWqUB+9yzCRQZgsoN3WBQd10CxIBYvEjszc2 jwPZJx6umE8bjuAMHqjueof/RXqrUtzeZLIoAPDeaFmjSjExjCWJ4v3lJGCsaLrAB/Gp axat86krR5YOwS3N9x1LEb7jd4RvX///Z7/vHjSYWrw2vmqlj7yAlvN36wiwLNjE+/O1 HLzQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=T8AfGj+HO8ldfN1QyJhTtl82SWRrf2P8eJp7eJUkZZU=; b=rsvjT+wcgTGcaf6+m4XV4223WwuBvlnC7bkOfKjtUdgAts0uvZeTYkbQjfkik/5FMQ S5c+M8qFchVgGl1+EHBSLumQf2KhxshouOqWQ+oJe24q6hWTMsUbYEC+vBKxN7EE6EIL uqPbTOdiXwqtooMuDZ6kiGKhW91r9vy7qHWION7CsOjsTP9atvwhJq3t1PRD0VGuwRL/ FTyRHYyNQjriVFfACCfN6ubKi0hsEcn+pmaB9VSwBke2xOEtx4sXqZLKqUvXzWL0xTya zZuiOKVJaS44RbD9BDZrUXB8hCzTonR0/CB5uMgnnkfVDWxm9HWCnq7YpWezD7PEsYkm /k/A== X-Gm-Message-State: AOAM533pdZ7ylkvF8QNFVNhgd5gXk0COiq0jkThlC4zQrOalGAPtJuoh 1aMhz0b8f4yWJoKjEe/uotH51IjkfLXiVw== X-Received: by 2002:a63:4764:: with SMTP id w36mr334507pgk.127.1609867235436; Tue, 05 Jan 2021 09:20:35 -0800 (PST) Received: from localhost.localdomain (rrcs-173-197-107-21.west.biz.rr.com. [173.197.107.21]) by smtp.gmail.com with ESMTPSA id u12sm2010pfh.98.2021.01.05.09.20.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 05 Jan 2021 09:20:34 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v5 23/43] tcg/aarch64: Support split-wx code generation Date: Tue, 5 Jan 2021 07:19:30 -1000 Message-Id: <20210105171950.415486-24-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210105171950.415486-1-richard.henderson@linaro.org> References: <20210105171950.415486-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::533; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x533.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Joelle van Dyne Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: "Qemu-devel" Reviewed-by: Joelle van Dyne Signed-off-by: Richard Henderson --- tcg/aarch64/tcg-target.h | 2 +- tcg/aarch64/tcg-target.c.inc | 57 ++++++++++++++++++++---------------- 2 files changed, 33 insertions(+), 26 deletions(-) -- 2.25.1 diff --git a/tcg/aarch64/tcg-target.h b/tcg/aarch64/tcg-target.h index 23bf87db3d..079828ea71 100644 --- a/tcg/aarch64/tcg-target.h +++ b/tcg/aarch64/tcg-target.h @@ -155,6 +155,6 @@ void tb_target_set_jmp_target(uintptr_t, uintptr_t, uintptr_t, uintptr_t); #define TCG_TARGET_NEED_LDST_LABELS #endif #define TCG_TARGET_NEED_POOL_LABELS -#define TCG_TARGET_SUPPORT_MIRROR 0 +#define TCG_TARGET_SUPPORT_MIRROR 1 #endif /* AARCH64_TCG_TARGET_H */ diff --git a/tcg/aarch64/tcg-target.c.inc b/tcg/aarch64/tcg-target.c.inc index bd888bc66d..2e33162c03 100644 --- a/tcg/aarch64/tcg-target.c.inc +++ b/tcg/aarch64/tcg-target.c.inc @@ -78,38 +78,42 @@ static const int tcg_target_call_oarg_regs[1] = { #define TCG_REG_GUEST_BASE TCG_REG_X28 #endif -static inline bool reloc_pc26(tcg_insn_unit *code_ptr, tcg_insn_unit *target) +static bool reloc_pc26(tcg_insn_unit *src_rw, const tcg_insn_unit *target) { - ptrdiff_t offset = target - code_ptr; + const tcg_insn_unit *src_rx = tcg_splitwx_to_rx(src_rw); + ptrdiff_t offset = target - src_rx; + if (offset == sextract64(offset, 0, 26)) { /* read instruction, mask away previous PC_REL26 parameter contents, set the proper offset, then write back the instruction. */ - *code_ptr = deposit32(*code_ptr, 0, 26, offset); + *src_rw = deposit32(*src_rw, 0, 26, offset); return true; } return false; } -static inline bool reloc_pc19(tcg_insn_unit *code_ptr, tcg_insn_unit *target) +static bool reloc_pc19(tcg_insn_unit *src_rw, const tcg_insn_unit *target) { - ptrdiff_t offset = target - code_ptr; + const tcg_insn_unit *src_rx = tcg_splitwx_to_rx(src_rw); + ptrdiff_t offset = target - src_rx; + if (offset == sextract64(offset, 0, 19)) { - *code_ptr = deposit32(*code_ptr, 5, 19, offset); + *src_rw = deposit32(*src_rw, 5, 19, offset); return true; } return false; } -static inline bool patch_reloc(tcg_insn_unit *code_ptr, int type, - intptr_t value, intptr_t addend) +static bool patch_reloc(tcg_insn_unit *code_ptr, int type, + intptr_t value, intptr_t addend) { tcg_debug_assert(addend == 0); switch (type) { case R_AARCH64_JUMP26: case R_AARCH64_CALL26: - return reloc_pc26(code_ptr, (tcg_insn_unit *)value); + return reloc_pc26(code_ptr, (const tcg_insn_unit *)value); case R_AARCH64_CONDBR19: - return reloc_pc19(code_ptr, (tcg_insn_unit *)value); + return reloc_pc19(code_ptr, (const tcg_insn_unit *)value); default: g_assert_not_reached(); } @@ -1050,12 +1054,13 @@ static void tcg_out_movi(TCGContext *s, TCGType type, TCGReg rd, /* Look for host pointer values within 4G of the PC. This happens often when loading pointers to QEMU's own data structures. */ if (type == TCG_TYPE_I64) { - tcg_target_long disp = value - (intptr_t)s->code_ptr; + intptr_t src_rx = (intptr_t)tcg_splitwx_to_rx(s->code_ptr); + tcg_target_long disp = value - src_rx; if (disp == sextract64(disp, 0, 21)) { tcg_out_insn(s, 3406, ADR, rd, disp); return; } - disp = (value >> 12) - ((intptr_t)s->code_ptr >> 12); + disp = (value >> 12) - (src_rx >> 12); if (disp == sextract64(disp, 0, 21)) { tcg_out_insn(s, 3406, ADRP, rd, disp); if (value & 0xfff) { @@ -1308,14 +1313,14 @@ static void tcg_out_cmp(TCGContext *s, TCGType ext, TCGReg a, static void tcg_out_goto(TCGContext *s, const tcg_insn_unit *target) { - ptrdiff_t offset = target - s->code_ptr; + ptrdiff_t offset = tcg_pcrel_diff(s, target) >> 2; tcg_debug_assert(offset == sextract64(offset, 0, 26)); tcg_out_insn(s, 3206, B, offset); } -static inline void tcg_out_goto_long(TCGContext *s, tcg_insn_unit *target) +static void tcg_out_goto_long(TCGContext *s, const tcg_insn_unit *target) { - ptrdiff_t offset = target - s->code_ptr; + ptrdiff_t offset = tcg_pcrel_diff(s, target) >> 2; if (offset == sextract64(offset, 0, 26)) { tcg_out_insn(s, 3206, B, offset); } else { @@ -1329,9 +1334,9 @@ static inline void tcg_out_callr(TCGContext *s, TCGReg reg) tcg_out_insn(s, 3207, BLR, reg); } -static inline void tcg_out_call(TCGContext *s, const tcg_insn_unit *target) +static void tcg_out_call(TCGContext *s, const tcg_insn_unit *target) { - ptrdiff_t offset = target - s->code_ptr; + ptrdiff_t offset = tcg_pcrel_diff(s, target) >> 2; if (offset == sextract64(offset, 0, 26)) { tcg_out_insn(s, 3206, BL, offset); } else { @@ -1393,7 +1398,7 @@ static void tcg_out_brcond(TCGContext *s, TCGType ext, TCGCond c, TCGArg a, tcg_out_reloc(s, s->code_ptr, R_AARCH64_CONDBR19, l, 0); offset = tcg_in32(s) >> 5; } else { - offset = l->u.value_ptr - s->code_ptr; + offset = tcg_pcrel_diff(s, l->u.value_ptr) >> 2; tcg_debug_assert(offset == sextract64(offset, 0, 19)); } @@ -1568,7 +1573,7 @@ static void * const qemu_st_helpers[16] = { [MO_BEQ] = helper_be_stq_mmu, }; -static inline void tcg_out_adr(TCGContext *s, TCGReg rd, void *target) +static inline void tcg_out_adr(TCGContext *s, TCGReg rd, const void *target) { ptrdiff_t offset = tcg_pcrel_diff(s, target); tcg_debug_assert(offset == sextract64(offset, 0, 21)); @@ -1581,7 +1586,7 @@ static bool tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *lb) MemOp opc = get_memop(oi); MemOp size = opc & MO_SIZE; - if (!reloc_pc19(lb->label_ptr[0], s->code_ptr)) { + if (!reloc_pc19(lb->label_ptr[0], tcg_splitwx_to_rx(s->code_ptr))) { return false; } @@ -1606,7 +1611,7 @@ static bool tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *lb) MemOp opc = get_memop(oi); MemOp size = opc & MO_SIZE; - if (!reloc_pc19(lb->label_ptr[0], s->code_ptr)) { + if (!reloc_pc19(lb->label_ptr[0], tcg_splitwx_to_rx(s->code_ptr))) { return false; } @@ -1631,7 +1636,8 @@ static void add_qemu_ldst_label(TCGContext *s, bool is_ld, TCGMemOpIdx oi, label->type = ext; label->datalo_reg = data_reg; label->addrlo_reg = addr_reg; - label->raddr = raddr; + /* TODO: Cast goes away when all hosts converted */ + label->raddr = (void *)tcg_splitwx_to_rx(raddr); label->label_ptr[0] = label_ptr; } @@ -1849,7 +1855,7 @@ static void tcg_out_qemu_st(TCGContext *s, TCGReg data_reg, TCGReg addr_reg, #endif /* CONFIG_SOFTMMU */ } -static tcg_insn_unit *tb_ret_addr; +static const tcg_insn_unit *tb_ret_addr; static void tcg_out_op(TCGContext *s, TCGOpcode opc, const TCGArg args[TCG_MAX_OP_ARGS], @@ -2894,11 +2900,12 @@ static void tcg_target_qemu_prologue(TCGContext *s) * Return path for goto_ptr. Set return value to 0, a-la exit_tb, * and fall through to the rest of the epilogue. */ - tcg_code_gen_epilogue = s->code_ptr; + /* TODO: Cast goes away when all hosts converted */ + tcg_code_gen_epilogue = (void *)tcg_splitwx_to_rx(s->code_ptr); tcg_out_movi(s, TCG_TYPE_REG, TCG_REG_X0, 0); /* TB epilogue */ - tb_ret_addr = s->code_ptr; + tb_ret_addr = tcg_splitwx_to_rx(s->code_ptr); /* Remove TCG locals stack space. */ tcg_out_insn(s, 3401, ADDI, TCG_TYPE_I64, TCG_REG_SP, TCG_REG_SP,