mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-05 10:46:15 +09:00
3a649407a4
Today, we have cases where we wish to build all of U-Boot in Thumb2 mode for various reasons. We also have cases where we only build SPL in Thumb2 mode due to size constraints and wish to build the rest of the system in ARM mode. So in this migration we introduce a new symbol as well, SPL_SYS_THUMB_BUILD to control if we build everything or just SPL (or in theory, just U-Boot) in Thumb2 mode. Signed-off-by: Tom Rini <trini@konsulko.com> Acked-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
97 lines
1.8 KiB
C
97 lines
1.8 KiB
C
/*
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* (C) Copyright 2016
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* Alexander Graf <agraf@suse.de>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef _SETJMP_H_
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#define _SETJMP_H_ 1
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struct jmp_buf_data {
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ulong target;
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ulong regs[5];
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int ret;
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};
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typedef struct jmp_buf_data jmp_buf[1];
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static inline int setjmp(jmp_buf jmp)
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{
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jmp->ret = 0;
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#ifdef CONFIG_ARM64
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asm volatile(
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"adr x1, jmp_target\n"
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"str x1, %0\n"
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"stp x26, x27, %1\n"
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"stp x28, x29, %2\n"
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"mov x1, sp\n"
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"str x1, %3\n"
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"jmp_target: "
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: "=m" (jmp->target), "=m" (jmp->regs[0]),
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"=m" (jmp->regs[2]), "=m" (jmp->regs[4])
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:
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: "x0", "x1", "x2", "x3", "x4", "x5", "x6", "x7",
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"x8", "x9", "x10", "x11", "x12", "x13", "x14", "x15",
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"x16", "x17", "x18", "x19", "x20", "x21", "x22",
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"x23", "x24", "x25", /* x26, x27, x28, x29, sp */
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"x30", "cc", "memory");
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#else
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asm volatile(
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#if CONFIG_IS_ENABLED(SYS_THUMB_BUILD)
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".align 2\n"
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"adr r0, jmp_target\n"
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"add r0, r0, $1\n"
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#else
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"adr r0, jmp_target\n"
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#endif
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"mov r1, %0\n"
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"mov r2, sp\n"
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"stm r1!, {r0, r2, r4, r5, r6, r7}\n"
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".align 2\n"
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"jmp_target: \n"
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:
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: "l" (&jmp->target)
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: "r0", "r1", "r2", "r3", /* "r4", "r5", "r6", "r7", */
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"r8", "r9", "r10", "r11", /* sp, */ "ip", "lr",
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"cc", "memory");
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#endif
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return jmp->ret;
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}
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static inline __noreturn void longjmp(jmp_buf jmp, int ret)
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{
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jmp->ret = ret;
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#ifdef CONFIG_ARM64
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asm volatile(
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"ldr x0, %0\n"
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"ldr x1, %3\n"
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"mov sp, x1\n"
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"ldp x26, x27, %1\n"
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"ldp x28, x25, %2\n"
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"mov x29, x25\n"
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"br x0\n"
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:
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: "m" (jmp->target), "m" (jmp->regs[0]), "m" (jmp->regs[2]),
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"m" (jmp->regs[4])
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: "x0", "x1", "x25", "x26", "x27", "x28");
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#else
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asm volatile(
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"mov r1, %0\n"
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"ldm r1!, {r0, r2, r4, r5, r6, r7}\n"
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"mov sp, r2\n"
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"bx r0\n"
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:
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: "l" (&jmp->target)
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: "r1");
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#endif
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while (1) { }
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}
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#endif /* _SETJMP_H_ */
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