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[97.122.77.73]) by smtp.gmail.com with ESMTPSA id q15-20020a0566380ecf00b00430bb70004dsm701765jas.103.2023.10.20.12.15.59 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 20 Oct 2023 12:15:59 -0700 (PDT) From: Tom Tromey Date: Fri, 20 Oct 2023 13:15:52 -0600 Subject: [PATCH 1/5] Fix calls with small integers on ARM MIME-Version: 1.0 Message-Id: <20231020-arm-params-v1-1-19d4c89c11b6@adacore.com> References: <20231020-arm-params-v1-0-19d4c89c11b6@adacore.com> In-Reply-To: <20231020-arm-params-v1-0-19d4c89c11b6@adacore.com> To: gdb-patches@sourceware.org X-Mailer: b4 0.12.3 X-Spam-Status: No, score=-11.0 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: gdb-patches@sourceware.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Gdb-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: gdb-patches-bounces+patchwork=sourceware.org@sourceware.org On big-endian ARM, an inferior call with a small integer will pass the wrong value. This patch fixes the problem. Because the code here works using scalar values, and not just bytes, left-shifting is unnecessary. --- gdb/arm-tdep.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/gdb/arm-tdep.c b/gdb/arm-tdep.c index a0ad1fb7a82..97d7c5140d2 100644 --- a/gdb/arm-tdep.c +++ b/gdb/arm-tdep.c @@ -4824,9 +4824,6 @@ arm_push_dummy_call (struct gdbarch *gdbarch, struct value *function, { /* The argument is being passed in a general purpose register. */ - if (byte_order == BFD_ENDIAN_BIG) - regval <<= (ARM_INT_REGISTER_SIZE - partial_len) * 8; - arm_debug_printf ("arg %d in %s = 0x%s", argnum, gdbarch_register_name (gdbarch, argreg), phex (regval, ARM_INT_REGISTER_SIZE));