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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [PATCH v3 4/9] xen/arm64: head: Add missing code symbol annotations
On Wed, 1 May 2024, Edgar E. Iglesias wrote:
> From: "Edgar E. Iglesias" <edgar.iglesias@xxxxxxx>
>
> Use the generic xen/linkage.h macros to annotate code symbols
> and add missing annotations.
>
> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xxxxxxx>
> ---
> xen/arch/arm/arm64/head.S | 50 ++++++++++++++++++++-------------------
> 1 file changed, 26 insertions(+), 24 deletions(-)
>
> diff --git a/xen/arch/arm/arm64/head.S b/xen/arch/arm/arm64/head.S
> index fb297e9eb5..7acedb4f8f 100644
> --- a/xen/arch/arm/arm64/head.S
> +++ b/xen/arch/arm/arm64/head.S
> @@ -90,7 +90,7 @@
> * 4K-aligned address.
> */
>
> -GLOBAL(start)
> +FUNC(start)
> /*
> * DO NOT MODIFY. Image header expected by Linux boot-loaders.
> */
> @@ -102,6 +102,7 @@ efi_head:
> */
> add x13, x18, #0x16
> b real_start /* branch to kernel start */
> +END(start)
> .quad 0 /* Image load offset from start of RAM
> */
> .quad _end - start /* Effective size of kernel image,
> little-endian */
> .quad __HEAD_FLAGS /* Informative flags, little-endian */
> @@ -223,7 +224,7 @@ section_table:
> .align 5
> #endif /* CONFIG_ARM_EFI */
>
> -real_start:
> +FUNC_LOCAL(real_start)
> /* BSS should be zeroed when booting without EFI */
> mov x26, #0 /* x26 := skip_zero_bss */
>
> @@ -263,9 +264,9 @@ primary_switched:
> mov x1, x21 /* x1 := paddr(FDT) */
> ldr x2, =start_xen
> b launch
> -ENDPROC(real_start)
> +END(real_start)
>
> -GLOBAL(init_secondary)
> +FUNC(init_secondary)
> msr DAIFSet, 0xf /* Disable all interrupts */
>
> /* Find out where we are */
> @@ -304,7 +305,7 @@ secondary_switched:
> /* Jump to C world */
> ldr x2, =start_secondary
> b launch
> -ENDPROC(init_secondary)
> +END(init_secondary)
>
> /*
> * Check if the CPU has been booted in Hypervisor mode.
> @@ -313,7 +314,7 @@ ENDPROC(init_secondary)
> *
> * Clobbers x0 - x5
> */
> -check_cpu_mode:
> +FUNC_LOCAL(check_cpu_mode)
> PRINT_ID("- Current EL ")
> mrs x5, CurrentEL
> print_reg x5
> @@ -329,7 +330,7 @@ check_cpu_mode:
> PRINT_ID("- Xen must be entered in NS EL2 mode -\r\n")
> PRINT_ID("- Please update the bootloader -\r\n")
> b fail
> -ENDPROC(check_cpu_mode)
> +END(check_cpu_mode)
>
> /*
> * Zero BSS
> @@ -339,7 +340,7 @@ ENDPROC(check_cpu_mode)
> *
> * Clobbers x0 - x3
> */
> -zero_bss:
> +FUNC_LOCAL(zero_bss)
> /* Zero BSS only when requested */
> cbnz x26, skip_bss
>
> @@ -353,14 +354,14 @@ zero_bss:
>
> skip_bss:
> ret
> -ENDPROC(zero_bss)
> +END(zero_bss)
>
> /*
> * Initialize the processor for turning the MMU on.
> *
> * Clobbers x0 - x3
> */
> -cpu_init:
> +FUNC_LOCAL(cpu_init)
> PRINT_ID("- Initialize CPU -\r\n")
>
> /* Set up memory attribute type tables */
> @@ -399,7 +400,7 @@ cpu_init:
> */
> msr spsel, #1
> ret
> -ENDPROC(cpu_init)
> +END(cpu_init)
>
> /*
> * Setup the initial stack and jump to the C world
> @@ -411,7 +412,7 @@ ENDPROC(cpu_init)
> *
> * Clobbers x3
> */
> -launch:
> +FUNC_LOCAL(launch)
> ldr x3, =init_data
> add x3, x3, #INITINFO_stack /* Find the boot-time stack */
> ldr x3, [x3]
> @@ -421,13 +422,13 @@ launch:
>
> /* Jump to C world */
> br x2
> -ENDPROC(launch)
> +END(launch)
>
> /* Fail-stop */
> -fail: PRINT_ID("- Boot failed -\r\n")
> +FUNC_LOCAL(fail) PRINT_ID("- Boot failed -\r\n")
Maybe we should move PRINT_ID to a newline?
I am not sure FUNC_LOCAL supports having a command on the same line.
> 1: wfe
> b 1b
> -ENDPROC(fail)
> +END(fail)
>
> #ifdef CONFIG_EARLY_PRINTK
> /*
> @@ -438,14 +439,14 @@ ENDPROC(fail)
> *
> * Clobbers x0 - x1
> */
> -init_uart:
> +FUNC_LOCAL(init_uart)
> ldr x23, =CONFIG_EARLY_UART_BASE_ADDRESS
> #ifdef CONFIG_EARLY_UART_INIT
> early_uart_init x23, 0
> #endif
> PRINT("- UART enabled -\r\n")
> ret
> -ENDPROC(init_uart)
> +END(init_uart)
>
> /*
> * Print early debug messages.
> @@ -454,7 +455,7 @@ ENDPROC(init_uart)
> * x23: Early UART base address
> * Clobbers x0-x1
> */
> -ENTRY(asm_puts)
> +FUNC(asm_puts)
> early_uart_ready x23, 1
> ldrb w1, [x0], #1 /* Load next char */
> cbz w1, 1f /* Exit on nul */
> @@ -462,7 +463,7 @@ ENTRY(asm_puts)
> b asm_puts
> 1:
> ret
> -ENDPROC(asm_puts)
> +END(asm_puts)
>
> /*
> * Print a 64-bit number in hex.
> @@ -471,7 +472,7 @@ ENDPROC(asm_puts)
> * x23: Early UART base address
> * Clobbers x0-x3
> */
> -ENTRY(asm_putn)
> +FUNC(asm_putn)
> adr_l x1, hex
> mov x3, #16
> 1:
> @@ -484,7 +485,7 @@ ENTRY(asm_putn)
> subs x3, x3, #1
> b.ne 1b
> ret
> -ENDPROC(asm_putn)
> +END(asm_putn)
>
> RODATA_SECT(.rodata.idmap, hex, "0123456789abcdef")
>
> @@ -493,16 +494,17 @@ RODATA_SECT(.rodata.idmap, hex, "0123456789abcdef")
> /* This provides a C-API version of __lookup_processor_type
> * TODO: For now, the implementation return NULL every time
> */
> -ENTRY(lookup_processor_type)
> +FUNC(lookup_processor_type)
> mov x0, #0
> ret
> +END(lookup_processor_type)
>
> #ifdef CONFIG_ARM_EFI
> /*
> * Function to transition from EFI loader in C, to Xen entry point.
> * void noreturn efi_xen_start(void *fdt_ptr, uint32_t fdt_size);
> */
> -ENTRY(efi_xen_start)
> +FUNC(efi_xen_start)
> /*
> * Preserve x0 (fdt pointer) across call to __flush_dcache_area,
> * restore for entry into Xen.
> @@ -554,7 +556,7 @@ ENTRY(efi_xen_start)
> mov x26, #1 /* x26 := skip_zero_bss */
>
> b real_start_efi
> -ENDPROC(efi_xen_start)
> +END(efi_xen_start)
>
> #endif /* CONFIG_ARM_EFI */
>
> --
> 2.40.1
>
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