Resguardo inicial

linux-7.2.3/rust/helpers/acpi.c

@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/acpi.h>
+#include <acpi/acpi_bus.h>
+
+__rust_helper bool rust_helper_acpi_of_match_device(const struct acpi_device *adev,
+						    const struct of_device_id *of_match_table,
+						    const struct of_device_id **of_id)
+{
+	return acpi_of_match_device(adev, of_match_table, of_id);
+}
+
+__rust_helper struct acpi_device *rust_helper_to_acpi_device_node(struct fwnode_handle *fwnode)
+{
+	return to_acpi_device_node(fwnode);
+}

linux-7.2.3/rust/helpers/atomic_ext.c

@@ -0,0 +1,87 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <asm/barrier.h>
+#include <asm/rwonce.h>
+#include <linux/atomic.h>
+
+#define GEN_READ_HELPER(tname, type)						\
+__rust_helper type rust_helper_atomic_##tname##_read(type *ptr)			\
+{										\
+	return READ_ONCE(*ptr);							\
+}
+
+#define GEN_SET_HELPER(tname, type)						\
+__rust_helper void rust_helper_atomic_##tname##_set(type *ptr, type val)	\
+{										\
+	WRITE_ONCE(*ptr, val);							\
+}
+
+#define GEN_READ_ACQUIRE_HELPER(tname, type)					\
+__rust_helper type rust_helper_atomic_##tname##_read_acquire(type *ptr)		\
+{										\
+	return smp_load_acquire(ptr);						\
+}
+
+#define GEN_SET_RELEASE_HELPER(tname, type)					\
+__rust_helper void rust_helper_atomic_##tname##_set_release(type *ptr, type val)\
+{										\
+	smp_store_release(ptr, val);						\
+}
+
+#define GEN_READ_SET_HELPERS(tname, type)					\
+	GEN_READ_HELPER(tname, type)						\
+	GEN_SET_HELPER(tname, type)						\
+	GEN_READ_ACQUIRE_HELPER(tname, type)					\
+	GEN_SET_RELEASE_HELPER(tname, type)					\
+
+GEN_READ_SET_HELPERS(i8, s8)
+GEN_READ_SET_HELPERS(i16, s16)
+GEN_READ_SET_HELPERS(ptr, const void *)
+
+/*
+ * xchg helpers depend on ARCH_SUPPORTS_ATOMIC_RMW and on the
+ * architecture provding xchg() support for i8 and i16.
+ *
+ * The architectures that currently support Rust (x86_64, armv7,
+ * arm64, riscv, and loongarch) satisfy these requirements.
+ */
+#define GEN_XCHG_HELPER(tname, type, suffix)					\
+__rust_helper type								\
+rust_helper_atomic_##tname##_xchg##suffix(type *ptr, type new)			\
+{										\
+	return xchg##suffix(ptr, new);					\
+}
+
+#define GEN_XCHG_HELPERS(tname, type)						\
+	GEN_XCHG_HELPER(tname, type, )						\
+	GEN_XCHG_HELPER(tname, type, _acquire)					\
+	GEN_XCHG_HELPER(tname, type, _release)					\
+	GEN_XCHG_HELPER(tname, type, _relaxed)					\
+
+GEN_XCHG_HELPERS(i8, s8)
+GEN_XCHG_HELPERS(i16, s16)
+GEN_XCHG_HELPERS(ptr, const void *)
+
+/*
+ * try_cmpxchg helpers depend on ARCH_SUPPORTS_ATOMIC_RMW and on the
+ * architecture provding try_cmpxchg() support for i8 and i16.
+ *
+ * The architectures that currently support Rust (x86_64, armv7,
+ * arm64, riscv, and loongarch) satisfy these requirements.
+ */
+#define GEN_TRY_CMPXCHG_HELPER(tname, type, suffix)				\
+__rust_helper bool								\
+rust_helper_atomic_##tname##_try_cmpxchg##suffix(type *ptr, type *old, type new)\
+{										\
+	return try_cmpxchg##suffix(ptr, old, new);				\
+}
+
+#define GEN_TRY_CMPXCHG_HELPERS(tname, type)					\
+	GEN_TRY_CMPXCHG_HELPER(tname, type, )					\
+	GEN_TRY_CMPXCHG_HELPER(tname, type, _acquire)				\
+	GEN_TRY_CMPXCHG_HELPER(tname, type, _release)				\
+	GEN_TRY_CMPXCHG_HELPER(tname, type, _relaxed)				\
+
+GEN_TRY_CMPXCHG_HELPERS(i8, s8)
+GEN_TRY_CMPXCHG_HELPERS(i16, s16)
+GEN_TRY_CMPXCHG_HELPERS(ptr, const void *)

linux-7.2.3/rust/helpers/auxiliary.c

@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/auxiliary_bus.h>
+
+__rust_helper void
+rust_helper_auxiliary_device_uninit(struct auxiliary_device *adev)
+{
+	return auxiliary_device_uninit(adev);
+}
+
+__rust_helper void
+rust_helper_auxiliary_device_delete(struct auxiliary_device *adev)
+{
+	return auxiliary_device_delete(adev);
+}

linux-7.2.3/rust/helpers/barrier.c

@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <asm/barrier.h>
+
+__rust_helper void rust_helper_smp_mb(void)
+{
+	smp_mb();
+}
+
+__rust_helper void rust_helper_smp_wmb(void)
+{
+	smp_wmb();
+}
+
+__rust_helper void rust_helper_smp_rmb(void)
+{
+	smp_rmb();
+}

linux-7.2.3/rust/helpers/binder.c

@@ -0,0 +1,27 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/*
+ * Copyright (C) 2025 Google LLC.
+ */
+
+#include <linux/list_lru.h>
+#include <linux/task_work.h>
+
+__rust_helper unsigned long rust_helper_list_lru_count(struct list_lru *lru)
+{
+	return list_lru_count(lru);
+}
+
+__rust_helper unsigned long rust_helper_list_lru_walk(struct list_lru *lru,
+						      list_lru_walk_cb isolate,
+						      void *cb_arg,
+						      unsigned long nr_to_walk)
+{
+	return list_lru_walk(lru, isolate, cb_arg, nr_to_walk);
+}
+
+__rust_helper void rust_helper_init_task_work(struct callback_head *twork,
+					      task_work_func_t func)
+{
+	init_task_work(twork, func);
+}

linux-7.2.3/rust/helpers/bitmap.c

@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/bitmap.h>
+
+__rust_helper
+void rust_helper_bitmap_copy_and_extend(unsigned long *to, const unsigned long *from,
+		unsigned int count, unsigned int size)
+{
+	bitmap_copy_and_extend(to, from, count, size);
+}

linux-7.2.3/rust/helpers/bitops.c

@@ -0,0 +1,69 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/bitops.h>
+#include <linux/find.h>
+
+__rust_helper
+void rust_helper___set_bit(unsigned long nr, unsigned long *addr)
+{
+	__set_bit(nr, addr);
+}
+
+__rust_helper
+void rust_helper___clear_bit(unsigned long nr, unsigned long *addr)
+{
+	__clear_bit(nr, addr);
+}
+
+__rust_helper
+void rust_helper_set_bit(unsigned long nr, volatile unsigned long *addr)
+{
+	set_bit(nr, addr);
+}
+
+__rust_helper
+void rust_helper_clear_bit(unsigned long nr, volatile unsigned long *addr)
+{
+	clear_bit(nr, addr);
+}
+
+/*
+ * The rust_helper_ prefix is intentionally omitted below so that the
+ * declarations in include/linux/find.h are compatible with these helpers.
+ *
+ * Note that the below #ifdefs mean that the helper is only created if C does
+ * not provide a definition.
+ */
+#ifdef find_first_zero_bit
+__rust_helper
+unsigned long _find_first_zero_bit(const unsigned long *p, unsigned long size)
+{
+	return find_first_zero_bit(p, size);
+}
+#endif /* find_first_zero_bit */
+
+#ifdef find_next_zero_bit
+__rust_helper
+unsigned long _find_next_zero_bit(const unsigned long *addr,
+				  unsigned long size, unsigned long offset)
+{
+	return find_next_zero_bit(addr, size, offset);
+}
+#endif /* find_next_zero_bit */
+
+#ifdef find_first_bit
+__rust_helper
+unsigned long _find_first_bit(const unsigned long *addr, unsigned long size)
+{
+	return find_first_bit(addr, size);
+}
+#endif /* find_first_bit */
+
+#ifdef find_next_bit
+__rust_helper
+unsigned long _find_next_bit(const unsigned long *addr, unsigned long size,
+			     unsigned long offset)
+{
+	return find_next_bit(addr, size, offset);
+}
+#endif /* find_next_bit */

linux-7.2.3/rust/helpers/blk.c

@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/blk-mq.h>
+#include <linux/blkdev.h>
+
+__rust_helper void *rust_helper_blk_mq_rq_to_pdu(struct request *rq)
+{
+	return blk_mq_rq_to_pdu(rq);
+}
+
+__rust_helper struct request *rust_helper_blk_mq_rq_from_pdu(void *pdu)
+{
+	return blk_mq_rq_from_pdu(pdu);
+}

linux-7.2.3/rust/helpers/bug.c

@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/bug.h>
+
+__rust_helper __noreturn void rust_helper_BUG(void)
+{
+	BUG();
+}
+
+__rust_helper bool rust_helper_WARN_ON(bool cond)
+{
+	return WARN_ON(cond);
+}

linux-7.2.3/rust/helpers/build_assert.c

@@ -0,0 +1,25 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/build_bug.h>
+
+/*
+ * `bindgen` binds the C `size_t` type as the Rust `usize` type, so we can
+ * use it in contexts where Rust expects a `usize` like slice (array) indices.
+ * `usize` is defined to be the same as C's `uintptr_t` type (can hold any
+ * pointer) but not necessarily the same as `size_t` (can hold the size of any
+ * single object). Most modern platforms use the same concrete integer type for
+ * both of them, but in case we find ourselves on a platform where
+ * that's not true, fail early instead of risking ABI or
+ * integer-overflow issues.
+ *
+ * If your platform fails this assertion, it means that you are in
+ * danger of integer-overflow bugs (even if you attempt to add
+ * `--no-size_t-is-usize`). It may be easiest to change the kernel ABI on
+ * your platform such that `size_t` matches `uintptr_t` (i.e., to increase
+ * `size_t`, because `uintptr_t` has to be at least as big as `size_t`).
+ */
+static_assert(
+	sizeof(size_t) == sizeof(uintptr_t) &&
+	__alignof__(size_t) == __alignof__(uintptr_t),
+	"Rust code expects C `size_t` to match Rust `usize`"
+);

linux-7.2.3/rust/helpers/build_bug.c

@@ -0,0 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/errname.h>
+
+__rust_helper const char *rust_helper_errname(int err)
+{
+	return errname(err);
+}

linux-7.2.3/rust/helpers/clk.c

@@ -0,0 +1,68 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/clk.h>
+
+/*
+ * The "inline" implementation of below helpers are only available when
+ * CONFIG_HAVE_CLK or CONFIG_HAVE_CLK_PREPARE aren't set.
+ */
+#ifndef CONFIG_HAVE_CLK
+__rust_helper struct clk *rust_helper_clk_get(struct device *dev,
+					      const char *id)
+{
+	return clk_get(dev, id);
+}
+
+__rust_helper void rust_helper_clk_put(struct clk *clk)
+{
+	clk_put(clk);
+}
+
+__rust_helper int rust_helper_clk_enable(struct clk *clk)
+{
+	return clk_enable(clk);
+}
+
+__rust_helper void rust_helper_clk_disable(struct clk *clk)
+{
+	clk_disable(clk);
+}
+
+__rust_helper unsigned long rust_helper_clk_get_rate(struct clk *clk)
+{
+	return clk_get_rate(clk);
+}
+
+__rust_helper int rust_helper_clk_set_rate(struct clk *clk, unsigned long rate)
+{
+	return clk_set_rate(clk, rate);
+}
+#endif
+
+#ifndef CONFIG_HAVE_CLK_PREPARE
+__rust_helper int rust_helper_clk_prepare(struct clk *clk)
+{
+	return clk_prepare(clk);
+}
+
+__rust_helper void rust_helper_clk_unprepare(struct clk *clk)
+{
+	clk_unprepare(clk);
+}
+#endif
+
+__rust_helper struct clk *rust_helper_clk_get_optional(struct device *dev,
+						       const char *id)
+{
+	return clk_get_optional(dev, id);
+}
+
+__rust_helper int rust_helper_clk_prepare_enable(struct clk *clk)
+{
+	return clk_prepare_enable(clk);
+}
+
+__rust_helper void rust_helper_clk_disable_unprepare(struct clk *clk)
+{
+	clk_disable_unprepare(clk);
+}

linux-7.2.3/rust/helpers/completion.c

@@ -0,0 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/completion.h>
+
+__rust_helper void rust_helper_init_completion(struct completion *x)
+{
+	init_completion(x);
+}

linux-7.2.3/rust/helpers/cpu.c

@@ -0,0 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/smp.h>
+
+__rust_helper unsigned int rust_helper_raw_smp_processor_id(void)
+{
+	return raw_smp_processor_id();
+}

linux-7.2.3/rust/helpers/cpufreq.c

@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/cpufreq.h>
+
+#ifdef CONFIG_CPU_FREQ
+__rust_helper void
+rust_helper_cpufreq_register_em_with_opp(struct cpufreq_policy *policy)
+{
+	cpufreq_register_em_with_opp(policy);
+}
+#endif

linux-7.2.3/rust/helpers/cpumask.c

@@ -0,0 +1,83 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/cpumask.h>
+
+__rust_helper
+void rust_helper_cpumask_set_cpu(unsigned int cpu, struct cpumask *dstp)
+{
+	cpumask_set_cpu(cpu, dstp);
+}
+
+__rust_helper
+void rust_helper___cpumask_set_cpu(unsigned int cpu, struct cpumask *dstp)
+{
+	__cpumask_set_cpu(cpu, dstp);
+}
+
+__rust_helper
+void rust_helper_cpumask_clear_cpu(int cpu, struct cpumask *dstp)
+{
+	cpumask_clear_cpu(cpu, dstp);
+}
+
+__rust_helper
+void rust_helper___cpumask_clear_cpu(int cpu, struct cpumask *dstp)
+{
+	__cpumask_clear_cpu(cpu, dstp);
+}
+
+__rust_helper
+bool rust_helper_cpumask_test_cpu(int cpu, struct cpumask *srcp)
+{
+	return cpumask_test_cpu(cpu, srcp);
+}
+
+__rust_helper
+void rust_helper_cpumask_setall(struct cpumask *dstp)
+{
+	cpumask_setall(dstp);
+}
+
+__rust_helper
+bool rust_helper_cpumask_empty(struct cpumask *srcp)
+{
+	return cpumask_empty(srcp);
+}
+
+__rust_helper
+bool rust_helper_cpumask_full(struct cpumask *srcp)
+{
+	return cpumask_full(srcp);
+}
+
+__rust_helper
+unsigned int rust_helper_cpumask_weight(struct cpumask *srcp)
+{
+	return cpumask_weight(srcp);
+}
+
+__rust_helper
+void rust_helper_cpumask_copy(struct cpumask *dstp, const struct cpumask *srcp)
+{
+	cpumask_copy(dstp, srcp);
+}
+
+__rust_helper
+bool rust_helper_alloc_cpumask_var(cpumask_var_t *mask, gfp_t flags)
+{
+	return alloc_cpumask_var(mask, flags);
+}
+
+__rust_helper
+bool rust_helper_zalloc_cpumask_var(cpumask_var_t *mask, gfp_t flags)
+{
+	return zalloc_cpumask_var(mask, flags);
+}
+
+#ifndef CONFIG_CPUMASK_OFFSTACK
+__rust_helper
+void rust_helper_free_cpumask_var(cpumask_var_t mask)
+{
+	free_cpumask_var(mask);
+}
+#endif

linux-7.2.3/rust/helpers/cred.c

@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/cred.h>
+
+__rust_helper const struct cred *rust_helper_get_cred(const struct cred *cred)
+{
+	return get_cred(cred);
+}
+
+__rust_helper void rust_helper_put_cred(const struct cred *cred)
+{
+	put_cred(cred);
+}

linux-7.2.3/rust/helpers/device.c

@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/device.h>
+
+__rust_helper int rust_helper_devm_add_action(struct device *dev,
+					      void (*action)(void *),
+					      void *data)
+{
+	return devm_add_action(dev, action, data);
+}
+
+__rust_helper int rust_helper_devm_add_action_or_reset(struct device *dev,
+						       void (*action)(void *),
+						       void *data)
+{
+	return devm_add_action_or_reset(dev, action, data);
+}
+
+__rust_helper void *rust_helper_dev_get_drvdata(const struct device *dev)
+{
+	return dev_get_drvdata(dev);
+}
+
+__rust_helper void rust_helper_dev_set_drvdata(struct device *dev, void *data)
+{
+	dev_set_drvdata(dev, data);
+}
+
+__rust_helper const char *rust_helper_dev_name(const struct device *dev)
+{
+	return dev_name(dev);
+}

linux-7.2.3/rust/helpers/dma-resv.c

@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/dma-resv.h>
+
+__rust_helper
+int rust_helper_dma_resv_lock(struct dma_resv *obj, struct ww_acquire_ctx *ctx)
+{
+	return dma_resv_lock(obj, ctx);
+}
+
+__rust_helper void rust_helper_dma_resv_unlock(struct dma_resv *obj)
+{
+	dma_resv_unlock(obj);
+}

linux-7.2.3/rust/helpers/dma.c

@@ -0,0 +1,51 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/dma-mapping.h>
+
+__rust_helper void *rust_helper_dma_alloc_attrs(struct device *dev, size_t size,
+						dma_addr_t *dma_handle,
+						gfp_t flag, unsigned long attrs)
+{
+	return dma_alloc_attrs(dev, size, dma_handle, flag, attrs);
+}
+
+__rust_helper void rust_helper_dma_free_attrs(struct device *dev, size_t size,
+					      void *cpu_addr,
+					      dma_addr_t dma_handle,
+					      unsigned long attrs)
+{
+	dma_free_attrs(dev, size, cpu_addr, dma_handle, attrs);
+}
+
+__rust_helper int rust_helper_dma_set_mask_and_coherent(struct device *dev,
+							u64 mask)
+{
+	return dma_set_mask_and_coherent(dev, mask);
+}
+
+__rust_helper int rust_helper_dma_set_mask(struct device *dev, u64 mask)
+{
+	return dma_set_mask(dev, mask);
+}
+
+__rust_helper int rust_helper_dma_set_coherent_mask(struct device *dev, u64 mask)
+{
+	return dma_set_coherent_mask(dev, mask);
+}
+
+__rust_helper int rust_helper_dma_map_sgtable(struct device *dev, struct sg_table *sgt,
+					      enum dma_data_direction dir, unsigned long attrs)
+{
+	return dma_map_sgtable(dev, sgt, dir, attrs);
+}
+
+__rust_helper size_t rust_helper_dma_max_mapping_size(struct device *dev)
+{
+	return dma_max_mapping_size(dev);
+}
+
+__rust_helper void rust_helper_dma_set_max_seg_size(struct device *dev,
+						    unsigned int size)
+{
+	dma_set_max_seg_size(dev, size);
+}

linux-7.2.3/rust/helpers/drm.c

@@ -0,0 +1,78 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <drm/drm_gem.h>
+#include <drm/drm_gem_shmem_helper.h>
+#include <drm/drm_vma_manager.h>
+
+#ifdef CONFIG_DRM
+
+__rust_helper void rust_helper_drm_gem_object_get(struct drm_gem_object *obj)
+{
+	drm_gem_object_get(obj);
+}
+
+__rust_helper void rust_helper_drm_gem_object_put(struct drm_gem_object *obj)
+{
+	drm_gem_object_put(obj);
+}
+
+__rust_helper __u64
+rust_helper_drm_vma_node_offset_addr(struct drm_vma_offset_node *node)
+{
+	return drm_vma_node_offset_addr(node);
+}
+
+#ifdef CONFIG_DRM_GEM_SHMEM_HELPER
+__rust_helper void
+rust_helper_drm_gem_shmem_object_free(struct drm_gem_object *obj)
+{
+	return drm_gem_shmem_object_free(obj);
+}
+
+__rust_helper void
+rust_helper_drm_gem_shmem_object_print_info(struct drm_printer *p, unsigned int indent,
+					    const struct drm_gem_object *obj)
+{
+	drm_gem_shmem_object_print_info(p, indent, obj);
+}
+
+__rust_helper int
+rust_helper_drm_gem_shmem_object_pin(struct drm_gem_object *obj)
+{
+	return drm_gem_shmem_object_pin(obj);
+}
+
+__rust_helper void
+rust_helper_drm_gem_shmem_object_unpin(struct drm_gem_object *obj)
+{
+	drm_gem_shmem_object_unpin(obj);
+}
+
+__rust_helper struct sg_table *
+rust_helper_drm_gem_shmem_object_get_sg_table(struct drm_gem_object *obj)
+{
+	return drm_gem_shmem_object_get_sg_table(obj);
+}
+
+__rust_helper int
+rust_helper_drm_gem_shmem_object_vmap(struct drm_gem_object *obj,
+				      struct iosys_map *map)
+{
+	return drm_gem_shmem_object_vmap(obj, map);
+}
+
+__rust_helper void
+rust_helper_drm_gem_shmem_object_vunmap(struct drm_gem_object *obj,
+					struct iosys_map *map)
+{
+	drm_gem_shmem_object_vunmap(obj, map);
+}
+
+__rust_helper int
+rust_helper_drm_gem_shmem_object_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma)
+{
+	return drm_gem_shmem_object_mmap(obj, vma);
+}
+
+#endif /* CONFIG_DRM_GEM_SHMEM_HELPER */
+#endif /* CONFIG_DRM */

linux-7.2.3/rust/helpers/drm_gpuvm.c

@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: GPL-2.0 or MIT
+
+#ifdef CONFIG_RUST_DRM_GPUVM
+
+#include <drm/drm_gpuvm.h>
+
+__rust_helper
+struct drm_gpuvm_bo *rust_helper_drm_gpuvm_bo_get(struct drm_gpuvm_bo *vm_bo)
+{
+	return drm_gpuvm_bo_get(vm_bo);
+}
+
+__rust_helper
+struct drm_gpuvm *rust_helper_drm_gpuvm_get(struct drm_gpuvm *obj)
+{
+	return drm_gpuvm_get(obj);
+}
+
+__rust_helper
+bool rust_helper_drm_gpuvm_is_extobj(struct drm_gpuvm *gpuvm,
+				     struct drm_gem_object *obj)
+{
+	return drm_gpuvm_is_extobj(gpuvm, obj);
+}
+
+#endif // CONFIG_RUST_DRM_GPUVM

linux-7.2.3/rust/helpers/err.c

@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/err.h>
+
+__rust_helper __force void *rust_helper_ERR_PTR(long err)
+{
+	return ERR_PTR(err);
+}
+
+__rust_helper bool rust_helper_IS_ERR(__force const void *ptr)
+{
+	return IS_ERR(ptr);
+}
+
+__rust_helper long rust_helper_PTR_ERR(__force const void *ptr)
+{
+	return PTR_ERR(ptr);
+}

linux-7.2.3/rust/helpers/fs.c

@@ -0,0 +1,12 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/*
+ * Copyright (C) 2024 Google LLC.
+ */
+
+#include <linux/fs.h>
+
+__rust_helper struct file *rust_helper_get_file(struct file *f)
+{
+	return get_file(f);
+}

linux-7.2.3/rust/helpers/gpu.c

@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/gpu_buddy.h>
+
+#ifdef CONFIG_GPU_BUDDY
+
+__rust_helper u64 rust_helper_gpu_buddy_block_offset(const struct gpu_buddy_block *block)
+{
+	return gpu_buddy_block_offset(block);
+}
+
+__rust_helper unsigned int rust_helper_gpu_buddy_block_order(struct gpu_buddy_block *block)
+{
+	return gpu_buddy_block_order(block);
+}
+
+#endif /* CONFIG_GPU_BUDDY */

linux-7.2.3/rust/helpers/helpers.c

@@ -0,0 +1,102 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Non-trivial C macros cannot be used in Rust. Similarly, inlined C functions
+ * cannot be called either. This file explicitly creates functions ("helpers")
+ * that wrap those so that they can be called from Rust.
+ *
+ * Sorted alphabetically.
+ */
+
+#include <linux/compiler_types.h>
+
+#ifdef __BINDGEN__
+// Omit `inline` for bindgen as it ignores inline functions.
+#define __rust_helper
+#else
+// The helper functions are all inline functions.
+//
+// We use `__always_inline` here to bypass LLVM inlining checks, in case the
+// helpers are inlined directly into Rust CGUs.
+//
+// The LLVM inlining checks are false positives:
+// * LLVM doesn't want to inline functions compiled with
+//   `-fno-delete-null-pointer-checks` with code compiled without.
+//   The C CGUs all have this enabled and Rust CGUs don't. Inlining is okay
+//   since this is one of the hardening features that does not change the ABI,
+//   and we shouldn't have null pointer dereferences in these helpers.
+// * LLVM doesn't want to inline functions with different list of builtins. C
+//   side has `-fno-builtin-wcslen`; `wcslen` is not a Rust builtin, so they
+//   should be compatible, but LLVM does not perform inlining due to attributes
+//   mismatch.
+// * clang and Rust doesn't have the exact target string. Clang generates
+//   `+cmov,+cx8,+fxsr` but Rust doesn't enable them (in fact, Rust will
+//   complain if `-Ctarget-feature=+cmov,+cx8,+fxsr` is used). x86-64 always
+//   enable these features, so they are in fact the same target string, but
+//   LLVM doesn't understand this and so inlining is inhibited. This can be
+//   bypassed with `--ignore-tti-inline-compatible`, but this is a hidden
+//   option.
+#define __rust_helper __always_inline
+#endif
+
+#include "acpi.c"
+#include "atomic.c"
+#include "atomic_ext.c"
+#include "auxiliary.c"
+#include "barrier.c"
+#include "binder.c"
+#include "bitmap.c"
+#include "bitops.c"
+#include "blk.c"
+#include "bug.c"
+#include "build_assert.c"
+#include "build_bug.c"
+#include "clk.c"
+#include "completion.c"
+#include "cpu.c"
+#include "cpufreq.c"
+#include "cpumask.c"
+#include "cred.c"
+#include "device.c"
+#include "dma.c"
+#include "dma-resv.c"
+#include "drm.c"
+#include "drm_gpuvm.c"
+#include "err.c"
+#include "irq.c"
+#include "fs.c"
+#include "gpu.c"
+#include "io.c"
+#include "jump_label.c"
+#include "kunit.c"
+#include "list.c"
+#include "maple_tree.c"
+#include "mm.c"
+#include "mutex.c"
+#include "of.c"
+#include "page.c"
+#include "pci.c"
+#include "pid_namespace.c"
+#include "platform.c"
+#include "poll.c"
+#include "processor.c"
+#include "property.c"
+#include "pwm.c"
+#include "rbtree.c"
+#include "rcu.c"
+#include "refcount.c"
+#include "regulator.c"
+#include "scatterlist.c"
+#include "security.c"
+#include "signal.c"
+#include "slab.c"
+#include "spinlock.c"
+#include "string.c"
+#include "sync.c"
+#include "task.c"
+#include "time.c"
+#include "uaccess.c"
+#include "usb.c"
+#include "vmalloc.c"
+#include "wait.c"
+#include "workqueue.c"
+#include "xarray.c"

linux-7.2.3/rust/helpers/io.c

@@ -0,0 +1,148 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/io.h>
+#include <linux/ioport.h>
+
+#ifdef CONFIG_HAS_IOMEM
+__rust_helper void __iomem *rust_helper_ioremap(phys_addr_t offset, size_t size)
+{
+	return ioremap(offset, size);
+}
+
+__rust_helper void __iomem *rust_helper_ioremap_np(phys_addr_t offset,
+						   size_t size)
+{
+	return ioremap_np(offset, size);
+}
+
+__rust_helper void rust_helper_iounmap(void __iomem *addr)
+{
+	iounmap(addr);
+}
+#endif /* CONFIG_HAS_IOMEM */
+
+__rust_helper u8 rust_helper_readb(const void __iomem *addr)
+{
+	return readb(addr);
+}
+
+__rust_helper u16 rust_helper_readw(const void __iomem *addr)
+{
+	return readw(addr);
+}
+
+__rust_helper u32 rust_helper_readl(const void __iomem *addr)
+{
+	return readl(addr);
+}
+
+#ifdef CONFIG_64BIT
+__rust_helper u64 rust_helper_readq(const void __iomem *addr)
+{
+	return readq(addr);
+}
+#endif
+
+__rust_helper void rust_helper_writeb(u8 value, void __iomem *addr)
+{
+	writeb(value, addr);
+}
+
+__rust_helper void rust_helper_writew(u16 value, void __iomem *addr)
+{
+	writew(value, addr);
+}
+
+__rust_helper void rust_helper_writel(u32 value, void __iomem *addr)
+{
+	writel(value, addr);
+}
+
+#ifdef CONFIG_64BIT
+__rust_helper void rust_helper_writeq(u64 value, void __iomem *addr)
+{
+	writeq(value, addr);
+}
+#endif
+
+__rust_helper u8 rust_helper_readb_relaxed(const void __iomem *addr)
+{
+	return readb_relaxed(addr);
+}
+
+__rust_helper u16 rust_helper_readw_relaxed(const void __iomem *addr)
+{
+	return readw_relaxed(addr);
+}
+
+__rust_helper u32 rust_helper_readl_relaxed(const void __iomem *addr)
+{
+	return readl_relaxed(addr);
+}
+
+#ifdef CONFIG_64BIT
+__rust_helper u64 rust_helper_readq_relaxed(const void __iomem *addr)
+{
+	return readq_relaxed(addr);
+}
+#endif
+
+__rust_helper void rust_helper_writeb_relaxed(u8 value, void __iomem *addr)
+{
+	writeb_relaxed(value, addr);
+}
+
+__rust_helper void rust_helper_writew_relaxed(u16 value, void __iomem *addr)
+{
+	writew_relaxed(value, addr);
+}
+
+__rust_helper void rust_helper_writel_relaxed(u32 value, void __iomem *addr)
+{
+	writel_relaxed(value, addr);
+}
+
+#ifdef CONFIG_64BIT
+__rust_helper void rust_helper_writeq_relaxed(u64 value, void __iomem *addr)
+{
+	writeq_relaxed(value, addr);
+}
+#endif
+
+__rust_helper resource_size_t rust_helper_resource_size(struct resource *res)
+{
+	return resource_size(res);
+}
+
+__rust_helper struct resource *
+rust_helper_request_mem_region(resource_size_t start, resource_size_t n,
+			       const char *name)
+{
+	return request_mem_region(start, n, name);
+}
+
+__rust_helper void rust_helper_release_mem_region(resource_size_t start,
+						  resource_size_t n)
+{
+	release_mem_region(start, n);
+}
+
+__rust_helper struct resource *rust_helper_request_region(resource_size_t start,
+							  resource_size_t n,
+							  const char *name)
+{
+	return request_region(start, n, name);
+}
+
+__rust_helper struct resource *
+rust_helper_request_muxed_region(resource_size_t start, resource_size_t n,
+				 const char *name)
+{
+	return request_muxed_region(start, n, name);
+}
+
+__rust_helper void rust_helper_release_region(resource_size_t start,
+					      resource_size_t n)
+{
+	release_region(start, n);
+}

linux-7.2.3/rust/helpers/irq.c

@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/interrupt.h>
+
+__rust_helper int rust_helper_request_irq(unsigned int irq,
+					  irq_handler_t handler,
+					  unsigned long flags, const char *name,
+					  void *dev)
+{
+	return request_irq(irq, handler, flags, name, dev);
+}

linux-7.2.3/rust/helpers/jump_label.c

@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/*
+ * Copyright (C) 2024 Google LLC.
+ */
+
+#include <linux/jump_label.h>
+
+#ifndef CONFIG_JUMP_LABEL
+__rust_helper int rust_helper_static_key_count(struct static_key *key)
+{
+	return static_key_count(key);
+}
+#endif

linux-7.2.3/rust/helpers/kunit.c

@@ -0,0 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <kunit/test-bug.h>
+
+__rust_helper struct kunit *rust_helper_kunit_get_current_test(void)
+{
+	return kunit_get_current_test();
+}

linux-7.2.3/rust/helpers/list.c

@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/*
+ * Helpers for C circular doubly linked list implementation.
+ */
+
+#include <linux/list.h>
+
+__rust_helper void rust_helper_INIT_LIST_HEAD(struct list_head *list)
+{
+	INIT_LIST_HEAD(list);
+}
+
+__rust_helper void rust_helper_list_add_tail(struct list_head *new, struct list_head *head)
+{
+	list_add_tail(new, head);
+}

linux-7.2.3/rust/helpers/maple_tree.c

@@ -0,0 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/maple_tree.h>
+
+__rust_helper void rust_helper_mt_init_flags(struct maple_tree *mt,
+					     unsigned int flags)
+{
+	mt_init_flags(mt, flags);
+}

linux-7.2.3/rust/helpers/mm.c

@@ -0,0 +1,50 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/mm.h>
+#include <linux/sched/mm.h>
+
+__rust_helper void rust_helper_mmgrab(struct mm_struct *mm)
+{
+	mmgrab(mm);
+}
+
+__rust_helper void rust_helper_mmdrop(struct mm_struct *mm)
+{
+	mmdrop(mm);
+}
+
+__rust_helper void rust_helper_mmget(struct mm_struct *mm)
+{
+	mmget(mm);
+}
+
+__rust_helper bool rust_helper_mmget_not_zero(struct mm_struct *mm)
+{
+	return mmget_not_zero(mm);
+}
+
+__rust_helper void rust_helper_mmap_read_lock(struct mm_struct *mm)
+{
+	mmap_read_lock(mm);
+}
+
+__rust_helper bool rust_helper_mmap_read_trylock(struct mm_struct *mm)
+{
+	return mmap_read_trylock(mm);
+}
+
+__rust_helper void rust_helper_mmap_read_unlock(struct mm_struct *mm)
+{
+	mmap_read_unlock(mm);
+}
+
+__rust_helper struct vm_area_struct *
+rust_helper_vma_lookup(struct mm_struct *mm, unsigned long addr)
+{
+	return vma_lookup(mm, addr);
+}
+
+__rust_helper void rust_helper_vma_end_read(struct vm_area_struct *vma)
+{
+	vma_end_read(vma);
+}

linux-7.2.3/rust/helpers/mutex.c

@@ -0,0 +1,30 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/mutex.h>
+
+__rust_helper void rust_helper_mutex_lock(struct mutex *lock)
+{
+	mutex_lock(lock);
+}
+
+__rust_helper int rust_helper_mutex_trylock(struct mutex *lock)
+{
+	return mutex_trylock(lock);
+}
+
+__rust_helper void rust_helper___mutex_init(struct mutex *mutex,
+					    const char *name,
+					    struct lock_class_key *key)
+{
+	__mutex_init(mutex, name, key);
+}
+
+__rust_helper void rust_helper_mutex_assert_is_held(struct mutex *mutex)
+{
+	lockdep_assert_held(mutex);
+}
+
+__rust_helper void rust_helper_mutex_destroy(struct mutex *lock)
+{
+	mutex_destroy(lock);
+}

linux-7.2.3/rust/helpers/of.c

@@ -0,0 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/of.h>
+
+__rust_helper bool rust_helper_is_of_node(const struct fwnode_handle *fwnode)
+{
+	return is_of_node(fwnode);
+}

linux-7.2.3/rust/helpers/page.c

@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/gfp.h>
+#include <linux/highmem.h>
+#include <linux/mm.h>
+
+__rust_helper struct page *rust_helper_alloc_pages(gfp_t gfp_mask,
+						   unsigned int order)
+{
+	return alloc_pages(gfp_mask, order);
+}
+
+__rust_helper void *rust_helper_kmap_local_page(struct page *page)
+{
+	return kmap_local_page(page);
+}
+
+__rust_helper void rust_helper_kunmap_local(const void *addr)
+{
+	kunmap_local(addr);
+}
+
+#ifndef NODE_NOT_IN_PAGE_FLAGS
+__rust_helper int rust_helper_page_to_nid(const struct page *page)
+{
+	return page_to_nid(page);
+}
+#endif

linux-7.2.3/rust/helpers/pci.c

@@ -0,0 +1,46 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/pci.h>
+
+__rust_helper u16 rust_helper_pci_dev_id(struct pci_dev *dev)
+{
+	return PCI_DEVID(dev->bus->number, dev->devfn);
+}
+
+__rust_helper resource_size_t
+rust_helper_pci_resource_start(struct pci_dev *pdev, int bar)
+{
+	return pci_resource_start(pdev, bar);
+}
+
+__rust_helper resource_size_t rust_helper_pci_resource_len(struct pci_dev *pdev,
+							   int bar)
+{
+	return pci_resource_len(pdev, bar);
+}
+
+__rust_helper bool rust_helper_dev_is_pci(const struct device *dev)
+{
+	return dev_is_pci(dev);
+}
+
+#ifndef CONFIG_PCI_MSI
+__rust_helper int rust_helper_pci_alloc_irq_vectors(struct pci_dev *dev,
+						    unsigned int min_vecs,
+						    unsigned int max_vecs,
+						    unsigned int flags)
+{
+	return pci_alloc_irq_vectors(dev, min_vecs, max_vecs, flags);
+}
+
+__rust_helper void rust_helper_pci_free_irq_vectors(struct pci_dev *dev)
+{
+	pci_free_irq_vectors(dev);
+}
+
+__rust_helper int rust_helper_pci_irq_vector(struct pci_dev *pdev,
+					     unsigned int nvec)
+{
+	return pci_irq_vector(pdev, nvec);
+}
+#endif

linux-7.2.3/rust/helpers/pid_namespace.c

@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/pid_namespace.h>
+#include <linux/cleanup.h>
+
+__rust_helper struct pid_namespace *
+rust_helper_get_pid_ns(struct pid_namespace *ns)
+{
+	return get_pid_ns(ns);
+}
+
+__rust_helper void rust_helper_put_pid_ns(struct pid_namespace *ns)
+{
+	put_pid_ns(ns);
+}
+
+/* Get a reference on a task's pid namespace. */
+__rust_helper struct pid_namespace *
+rust_helper_task_get_pid_ns(struct task_struct *task)
+{
+	struct pid_namespace *pid_ns;
+
+	guard(rcu)();
+	pid_ns = task_active_pid_ns(task);
+	if (pid_ns)
+		get_pid_ns(pid_ns);
+	return pid_ns;
+}

linux-7.2.3/rust/helpers/platform.c

@@ -0,0 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/platform_device.h>
+
+__rust_helper bool rust_helper_dev_is_platform(const struct device *dev)
+{
+	return dev_is_platform(dev);
+}

linux-7.2.3/rust/helpers/poll.c

@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/export.h>
+#include <linux/poll.h>
+
+__rust_helper void rust_helper_poll_wait(struct file *filp,
+					 wait_queue_head_t *wait_address,
+					 poll_table *p)
+{
+	poll_wait(filp, wait_address, p);
+}

linux-7.2.3/rust/helpers/processor.c

@@ -0,0 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/processor.h>
+
+__rust_helper void rust_helper_cpu_relax(void)
+{
+	cpu_relax();
+}

linux-7.2.3/rust/helpers/property.c

@@ -0,0 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/property.h>
+
+__rust_helper void rust_helper_fwnode_handle_put(struct fwnode_handle *fwnode)
+{
+	fwnode_handle_put(fwnode);
+}

linux-7.2.3/rust/helpers/pwm.c

@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (c) 2025 Samsung Electronics Co., Ltd.
+// Author: Michal Wilczynski <m.wilczynski@samsung.com>
+
+#include <linux/pwm.h>
+
+__rust_helper struct device *rust_helper_pwmchip_parent(const struct pwm_chip *chip)
+{
+	return pwmchip_parent(chip);
+}
+
+__rust_helper void *rust_helper_pwmchip_get_drvdata(struct pwm_chip *chip)
+{
+	return pwmchip_get_drvdata(chip);
+}
+
+__rust_helper void rust_helper_pwmchip_set_drvdata(struct pwm_chip *chip, void *data)
+{
+	pwmchip_set_drvdata(chip, data);
+}

linux-7.2.3/rust/helpers/rbtree.c

@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/rbtree.h>
+
+__rust_helper void rust_helper_rb_link_node(struct rb_node *node,
+					    struct rb_node *parent,
+					    struct rb_node **rb_link)
+{
+	rb_link_node(node, parent, rb_link);
+}
+
+__rust_helper struct rb_node *rust_helper_rb_first(const struct rb_root *root)
+{
+	return rb_first(root);
+}
+
+__rust_helper struct rb_node *rust_helper_rb_last(const struct rb_root *root)
+{
+	return rb_last(root);
+}

linux-7.2.3/rust/helpers/rcu.c

@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/rcupdate.h>
+
+__rust_helper void rust_helper_rcu_read_lock(void)
+{
+	rcu_read_lock();
+}
+
+__rust_helper void rust_helper_rcu_read_unlock(void)
+{
+	rcu_read_unlock();
+}

linux-7.2.3/rust/helpers/refcount.c

@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/refcount.h>
+
+__rust_helper refcount_t rust_helper_REFCOUNT_INIT(int n)
+{
+	return (refcount_t)REFCOUNT_INIT(n);
+}
+
+__rust_helper void rust_helper_refcount_set(refcount_t *r, int n)
+{
+	refcount_set(r, n);
+}
+
+__rust_helper void rust_helper_refcount_inc(refcount_t *r)
+{
+	refcount_inc(r);
+}
+
+__rust_helper void rust_helper_refcount_dec(refcount_t *r)
+{
+	refcount_dec(r);
+}
+
+__rust_helper bool rust_helper_refcount_dec_and_test(refcount_t *r)
+{
+	return refcount_dec_and_test(r);
+}

linux-7.2.3/rust/helpers/regulator.c

@@ -0,0 +1,57 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/regulator/consumer.h>
+
+#ifndef CONFIG_REGULATOR
+
+__rust_helper void rust_helper_regulator_put(struct regulator *regulator)
+{
+	regulator_put(regulator);
+}
+
+__rust_helper int rust_helper_regulator_set_voltage(struct regulator *regulator,
+						    int min_uV, int max_uV)
+{
+	return regulator_set_voltage(regulator, min_uV, max_uV);
+}
+
+__rust_helper int rust_helper_regulator_get_voltage(struct regulator *regulator)
+{
+	return regulator_get_voltage(regulator);
+}
+
+__rust_helper struct regulator *rust_helper_regulator_get(struct device *dev,
+							  const char *id)
+{
+	return regulator_get(dev, id);
+}
+
+__rust_helper int rust_helper_regulator_enable(struct regulator *regulator)
+{
+	return regulator_enable(regulator);
+}
+
+__rust_helper int rust_helper_regulator_disable(struct regulator *regulator)
+{
+	return regulator_disable(regulator);
+}
+
+__rust_helper int rust_helper_regulator_is_enabled(struct regulator *regulator)
+{
+	return regulator_is_enabled(regulator);
+}
+
+__rust_helper int rust_helper_devm_regulator_get_enable(struct device *dev,
+							const char *id)
+{
+	return devm_regulator_get_enable(dev, id);
+}
+
+__rust_helper int
+rust_helper_devm_regulator_get_enable_optional(struct device *dev,
+					       const char *id)
+{
+	return devm_regulator_get_enable_optional(dev, id);
+}
+
+#endif

linux-7.2.3/rust/helpers/scatterlist.c

@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/dma-direction.h>
+
+__rust_helper dma_addr_t rust_helper_sg_dma_address(struct scatterlist *sg)
+{
+	return sg_dma_address(sg);
+}
+
+__rust_helper unsigned int rust_helper_sg_dma_len(struct scatterlist *sg)
+{
+	return sg_dma_len(sg);
+}
+
+__rust_helper struct scatterlist *rust_helper_sg_next(struct scatterlist *sg)
+{
+	return sg_next(sg);
+}
+
+__rust_helper void rust_helper_dma_unmap_sgtable(struct device *dev,
+						 struct sg_table *sgt,
+						 enum dma_data_direction dir,
+						 unsigned long attrs)
+{
+	return dma_unmap_sgtable(dev, sgt, dir, attrs);
+}

linux-7.2.3/rust/helpers/security.c

@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/security.h>
+
+#ifndef CONFIG_SECURITY
+__rust_helper void rust_helper_security_cred_getsecid(const struct cred *c,
+						      u32 *secid)
+{
+	security_cred_getsecid(c, secid);
+}
+
+__rust_helper int rust_helper_security_secid_to_secctx(u32 secid,
+						       struct lsm_context *cp)
+{
+	return security_secid_to_secctx(secid, cp);
+}
+
+__rust_helper void rust_helper_security_release_secctx(struct lsm_context *cp)
+{
+	security_release_secctx(cp);
+}
+
+__rust_helper int
+rust_helper_security_binder_set_context_mgr(const struct cred *mgr)
+{
+	return security_binder_set_context_mgr(mgr);
+}
+
+__rust_helper int
+rust_helper_security_binder_transaction(const struct cred *from,
+					const struct cred *to)
+{
+	return security_binder_transaction(from, to);
+}
+
+__rust_helper int
+rust_helper_security_binder_transfer_binder(const struct cred *from,
+					    const struct cred *to)
+{
+	return security_binder_transfer_binder(from, to);
+}
+
+__rust_helper int rust_helper_security_binder_transfer_file(
+	const struct cred *from, const struct cred *to, const struct file *file)
+{
+	return security_binder_transfer_file(from, to, file);
+}
+#endif

linux-7.2.3/rust/helpers/signal.c

@@ -0,0 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/sched/signal.h>
+
+__rust_helper int rust_helper_signal_pending(struct task_struct *t)
+{
+	return signal_pending(t);
+}

linux-7.2.3/rust/helpers/slab.c

@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/slab.h>
+
+__rust_helper void *__must_check __realloc_size(2)
+rust_helper_krealloc_node_align(const void *objp, size_t new_size, unsigned long align,
+				gfp_t flags, int node)
+{
+	return krealloc_node_align(objp, new_size, align, flags, node);
+}
+
+__rust_helper void *__must_check __realloc_size(2)
+rust_helper_kvrealloc_node_align(const void *p, size_t size, unsigned long align,
+				 gfp_t flags, int node)
+{
+	return kvrealloc_node_align(p, size, align, flags, node);
+}

linux-7.2.3/rust/helpers/spinlock.c

@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/spinlock.h>
+
+__rust_helper void rust_helper___spin_lock_init(spinlock_t *lock,
+						const char *name,
+						struct lock_class_key *key)
+{
+#ifdef CONFIG_DEBUG_SPINLOCK
+# if defined(CONFIG_PREEMPT_RT)
+	__spin_lock_init(lock, name, key, false);
+# else /*!CONFIG_PREEMPT_RT */
+	__raw_spin_lock_init(spinlock_check(lock), name, key, LD_WAIT_CONFIG);
+# endif /* CONFIG_PREEMPT_RT */
+#else /* !CONFIG_DEBUG_SPINLOCK */
+	spin_lock_init(lock);
+#endif /* CONFIG_DEBUG_SPINLOCK */
+}
+
+__rust_helper void rust_helper_spin_lock(spinlock_t *lock)
+{
+	spin_lock(lock);
+}
+
+__rust_helper void rust_helper_spin_unlock(spinlock_t *lock)
+{
+	spin_unlock(lock);
+}
+
+__rust_helper int rust_helper_spin_trylock(spinlock_t *lock)
+{
+	return spin_trylock(lock);
+}
+
+__rust_helper void rust_helper_spin_assert_is_held(spinlock_t *lock)
+{
+	lockdep_assert_held(lock);
+}

linux-7.2.3/rust/helpers/string.c

@@ -0,0 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/string.h>
+
+__rust_helper void *rust_helper_memchr(const void *s, int c, size_t n)
+{
+	return memchr(s, c, n);
+}

linux-7.2.3/rust/helpers/sync.c

@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/lockdep.h>
+
+__rust_helper void rust_helper_lockdep_register_key(struct lock_class_key *k)
+{
+	lockdep_register_key(k);
+}
+
+__rust_helper void rust_helper_lockdep_unregister_key(struct lock_class_key *k)
+{
+	lockdep_unregister_key(k);
+}

linux-7.2.3/rust/helpers/task.c

@@ -0,0 +1,62 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/kernel.h>
+#include <linux/sched/task.h>
+
+__rust_helper void rust_helper_might_resched(void)
+{
+	might_resched();
+}
+
+__rust_helper struct task_struct *rust_helper_get_current(void)
+{
+	return current;
+}
+
+__rust_helper void rust_helper_get_task_struct(struct task_struct *t)
+{
+	get_task_struct(t);
+}
+
+__rust_helper void rust_helper_put_task_struct(struct task_struct *t)
+{
+	put_task_struct(t);
+}
+
+__rust_helper kuid_t rust_helper_task_uid(struct task_struct *task)
+{
+	return task_uid(task);
+}
+
+__rust_helper kuid_t rust_helper_task_euid(struct task_struct *task)
+{
+	return task_euid(task);
+}
+
+#ifndef CONFIG_USER_NS
+__rust_helper uid_t rust_helper_from_kuid(struct user_namespace *to, kuid_t uid)
+{
+	return from_kuid(to, uid);
+}
+#endif /* CONFIG_USER_NS */
+
+__rust_helper bool rust_helper_uid_eq(kuid_t left, kuid_t right)
+{
+	return uid_eq(left, right);
+}
+
+__rust_helper kuid_t rust_helper_current_euid(void)
+{
+	return current_euid();
+}
+
+__rust_helper struct user_namespace *rust_helper_current_user_ns(void)
+{
+	return current_user_ns();
+}
+
+__rust_helper pid_t rust_helper_task_tgid_nr_ns(struct task_struct *tsk,
+						struct pid_namespace *ns)
+{
+	return task_tgid_nr_ns(tsk, ns);
+}

linux-7.2.3/rust/helpers/time.c

@@ -0,0 +1,40 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/delay.h>
+#include <linux/ktime.h>
+#include <linux/timekeeping.h>
+
+__rust_helper void rust_helper_fsleep(unsigned long usecs)
+{
+	fsleep(usecs);
+}
+
+__rust_helper ktime_t rust_helper_ktime_get_real(void)
+{
+	return ktime_get_real();
+}
+
+__rust_helper ktime_t rust_helper_ktime_get_boottime(void)
+{
+	return ktime_get_boottime();
+}
+
+__rust_helper ktime_t rust_helper_ktime_get_clocktai(void)
+{
+	return ktime_get_clocktai();
+}
+
+__rust_helper s64 rust_helper_ktime_to_us(const ktime_t kt)
+{
+	return ktime_to_us(kt);
+}
+
+__rust_helper s64 rust_helper_ktime_to_ms(const ktime_t kt)
+{
+	return ktime_to_ms(kt);
+}
+
+__rust_helper void rust_helper_udelay(unsigned long usec)
+{
+	udelay(usec);
+}

linux-7.2.3/rust/helpers/uaccess.c

@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/uaccess.h>
+
+__rust_helper unsigned long
+rust_helper_copy_from_user(void *to, const void __user *from, unsigned long n)
+{
+	return copy_from_user(to, from, n);
+}
+
+__rust_helper unsigned long
+rust_helper_copy_to_user(void __user *to, const void *from, unsigned long n)
+{
+	return copy_to_user(to, from, n);
+}
+
+#ifdef INLINE_COPY_USER
+__rust_helper
+unsigned long rust_helper__copy_from_user(void *to, const void __user *from, unsigned long n)
+{
+	return _inline_copy_from_user(to, from, n);
+}
+
+__rust_helper
+unsigned long rust_helper__copy_to_user(void __user *to, const void *from, unsigned long n)
+{
+	return _inline_copy_to_user(to, from, n);
+}
+#endif

linux-7.2.3/rust/helpers/usb.c

@@ -0,0 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/usb.h>
+
+__rust_helper struct usb_device *
+rust_helper_interface_to_usbdev(struct usb_interface *intf)
+{
+	return interface_to_usbdev(intf);
+}

linux-7.2.3/rust/helpers/vmalloc.c

@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/mm.h>
+#include <linux/vmalloc.h>
+
+__rust_helper void *__must_check __realloc_size(2)
+rust_helper_vrealloc_node_align(const void *p, size_t size, unsigned long align,
+				gfp_t flags, int node)
+{
+	return vrealloc_node_align(p, size, align, flags, node);
+}
+
+__rust_helper bool rust_helper_is_vmalloc_addr(const void *x)
+{
+	return is_vmalloc_addr(x);
+}

linux-7.2.3/rust/helpers/wait.c

@@ -0,0 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/wait.h>
+
+__rust_helper void rust_helper_init_wait(struct wait_queue_entry *wq_entry)
+{
+	init_wait(wq_entry);
+}

linux-7.2.3/rust/helpers/workqueue.c

@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/workqueue.h>
+
+__rust_helper void rust_helper_init_work_with_key(struct work_struct *work,
+						  work_func_t func,
+						  bool onstack,
+						  const char *name,
+						  struct lock_class_key *key)
+{
+	__init_work(work, onstack);
+	work->data = (atomic_long_t)WORK_DATA_INIT();
+	lockdep_init_map(&work->lockdep_map, name, key, 0);
+	INIT_LIST_HEAD(&work->entry);
+	work->func = func;
+}

linux-7.2.3/rust/helpers/xarray.c

@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/xarray.h>
+
+__rust_helper int rust_helper_xa_err(void *entry)
+{
+	return xa_err(entry);
+}
+
+__rust_helper void rust_helper_xa_init_flags(struct xarray *xa, gfp_t flags)
+{
+	return xa_init_flags(xa, flags);
+}
+
+__rust_helper int rust_helper_xa_trylock(struct xarray *xa)
+{
+	return xa_trylock(xa);
+}
+
+__rust_helper void rust_helper_xa_lock(struct xarray *xa)
+{
+	return xa_lock(xa);
+}
+
+__rust_helper void rust_helper_xa_unlock(struct xarray *xa)
+{
+	return xa_unlock(xa);
+}