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[174.21.72.5]) by smtp.gmail.com with ESMTPSA id v19-20020a17090abb9300b002a0544b81d6sm3564074pjr.35.2024.04.12.22.23.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Apr 2024 22:23:37 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: edgar.iglesias@gmail.com, philmd@linaro.org Subject: [PATCH 2/6] disas/cris: Remove TRACE_CASE and related code Date: Fri, 12 Apr 2024 22:23:29 -0700 Message-Id: <20240413052333.688151-3-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240413052333.688151-1-richard.henderson@linaro.org> References: <20240413052333.688151-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::c2f; envelope-from=richard.henderson@linaro.org; helo=mail-oo1-xc2f.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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: qemu-devel-bounces+patch=linaro.org@nongnu.org The disassembler_options variable is never set within QEMU, so this code is never enabled. Remove it all. Signed-off-by: Richard Henderson --- disas/cris.c | 114 ++------------------------------------------------- 1 file changed, 3 insertions(+), 111 deletions(-) diff --git a/disas/cris.c b/disas/cris.c index d62f9e3264..1cc8752104 100644 --- a/disas/cris.c +++ b/disas/cris.c @@ -1236,58 +1236,17 @@ cris_cc_strings[] = /* Sometimes we prefix all registers with this character. */ #define REGISTER_PREFIX_CHAR '$' -/* Whether or not to trace the following sequence: - sub* X,r%d - bound* Y,r%d - adds.w [pc+r%d.w],pc - - This is the assembly form of a switch-statement in C. - The "sub is optional. If there is none, then X will be zero. - X is the value of the first case, - Y is the number of cases (including default). - - This results in case offsets printed on the form: - case N: -> case_address - where N is an estimation on the corresponding 'case' operand in C, - and case_address is where execution of that case continues after the - sequence presented above. - - The old style of output was to print the offsets as instructions, - which made it hard to follow "case"-constructs in the disassembly, - and caused a lot of annoying warnings about undefined instructions. - - FIXME: Make this optional later. */ -#ifndef TRACE_CASE -#define TRACE_CASE (disdata->trace_case) -#endif - enum cris_disass_family { cris_dis_v0_v10, cris_dis_common_v10_v32, cris_dis_v32 }; /* Stored in the disasm_info->private_data member. */ struct cris_disasm_data { - /* Whether to print something less confusing if we find something - matching a switch-construct. */ - bfd_boolean trace_case; - /* Whether this code is flagged as crisv32. FIXME: Should be an enum that includes "compatible". */ enum cris_disass_family distype; }; -/* Value of first element in switch. */ -static long case_offset = 0; - -/* How many more case-offsets to print. */ -static long case_offset_counter = 0; - -/* Number of case offsets. */ -static long no_of_case_offsets = 0; - -/* Candidate for next case_offset. */ -static long last_immediate = 0; - static int cris_constraint (const char *, unsigned, unsigned, struct cris_disasm_data *); @@ -1299,11 +1258,6 @@ cris_parse_disassembler_options (struct cris_disasm_data *disdata, char *disassembler_options, enum cris_disass_family distype) { - /* Default true. */ - disdata->trace_case - = (disassembler_options == NULL - || (strcmp (disassembler_options, "nocase") != 0)); - disdata->distype = distype; } @@ -1711,18 +1665,13 @@ cris_constraint (const char *cs, static char * format_hex (unsigned long number, - char *outbuffer, - struct cris_disasm_data *disdata) + char *outbuffer) { /* Truncate negative numbers on >32-bit hosts. */ number &= 0xffffffff; sprintf (outbuffer, "0x%lx", number); - /* Save this value for the "case" support. */ - if (TRACE_CASE) - last_immediate = number; - return outbuffer + strlen (outbuffer); } @@ -1733,7 +1682,6 @@ format_hex (unsigned long number, static char * format_dec (long number, char *outbuffer, size_t outsize, int signedp) { - last_immediate = number; snprintf (outbuffer, outsize, signedp ? "%ld" : "%lu", number); return outbuffer + strlen (outbuffer); @@ -2138,7 +2086,7 @@ print_with_operands (const struct cris_opcode *opcodep, info->target = number; } else - tp = format_hex (number, tp, disdata); + tp = format_hex (number, tp); } } else @@ -2273,11 +2221,6 @@ print_with_operands (const struct cris_opcode *opcodep, ? CRIS_DIS_FLAG_MEM_TARGET2_MULT4 : ((prefix_insn & 0x8000) ? CRIS_DIS_FLAG_MEM_TARGET2_MULT2 : 0))); - - /* Is it the casejump? It's a "adds.w [pc+r%d.w],pc". */ - if (insn == 0xf83f && (prefix_insn & ~0xf000) == 0x55f) - /* Then start interpreting data as offsets. */ - case_offset_counter = no_of_case_offsets; break; case BDAP_INDIR_OPCODE: @@ -2514,31 +2457,6 @@ print_with_operands (const struct cris_opcode *opcodep, prefix_opcodep->name, prefix_opcodep->args); (*info->fprintf_func) (info->stream, "%s", temp); - - /* Get info for matching case-tables, if we don't have any active. - We assume that the last constant seen is used; either in the insn - itself or in a "move.d const,rN, sub.d rN,rM"-like sequence. */ - if (TRACE_CASE && case_offset_counter == 0) - { - if (CONST_STRNEQ (opcodep->name, "sub")) - case_offset = last_immediate; - - /* It could also be an "add", if there are negative case-values. */ - else if (CONST_STRNEQ (opcodep->name, "add")) - /* The first case is the negated operand to the add. */ - case_offset = -last_immediate; - - /* A bound insn will tell us the number of cases. */ - else if (CONST_STRNEQ (opcodep->name, "bound")) - no_of_case_offsets = last_immediate + 1; - - /* A jump or jsr or branch breaks the chain of insns for a - case-table, so assume default first-case again. */ - else if (info->insn_type == dis_jsr - || info->insn_type == dis_branch - || info->insn_type == dis_condbranch) - case_offset = 0; - } } @@ -2601,33 +2519,7 @@ print_insn_cris_generic (bfd_vma memaddr, insn = bufp[0] + bufp[1] * 256; - /* If we're in a case-table, don't disassemble the offsets. */ - if (TRACE_CASE && case_offset_counter != 0) - { - info->insn_type = dis_noninsn; - advance += 2; - - /* If to print data as offsets, then shortcut here. */ - (*info->fprintf_func) (info->stream, "case %ld%s: -> ", - case_offset + no_of_case_offsets - - case_offset_counter, - case_offset_counter == 1 ? "/default" : - ""); - - (*info->print_address_func) ((bfd_vma) - ((short) (insn) - + (long) (addr - - (no_of_case_offsets - - case_offset_counter) - * 2)), info); - case_offset_counter--; - - /* The default case start (without a "sub" or "add") must be - zero. */ - if (case_offset_counter == 0) - case_offset = 0; - } - else if (insn == 0) + if (insn == 0) { /* We're often called to disassemble zeroes. While this is a valid "bcc .+2" insn, it is also useless enough and enough