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theseven |
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#include <stdint.h>
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#include <stdarg.h>
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#include <stdbool.h>
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#include "syscallapi.h"
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#include "syscallwrappers.h"
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#define EMBIOS_APP_HEADER(threadnamestr, stacksizebytes, mainfunc, threadprio) \
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uint32_t __embios_thread_stack[stacksizebytes >> 2]; \
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theseven |
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const char __embios_thread_name[] = threadnamestr; \
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theseven |
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struct embios_app_header \
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{ \
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char signature[8]; \
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int version; \
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void* baseaddr; \
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int size; \
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uint32_t crc32; \
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void* stackaddr; \
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int stacksize; \
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void* entrypoint; \
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theseven |
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const char* threadname; \
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theseven |
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int threadtype; \
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int threadpriority; \
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} __embios_executable_hdr __attribute__((section(".execheader"))) = \
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{ \
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.signature = "emBIexec", \
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.version = 0, \
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.baseaddr = &__embios_executable_hdr, \
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.size = -1, \
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.crc32 = 0, \
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.stackaddr = __embios_thread_stack, \
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.stacksize = stacksizebytes, \
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.entrypoint = mainfunc, \
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.threadname = __embios_thread_name, \
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.threadtype = 0, \
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.threadpriority = threadprio \
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}; \
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theseven |
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struct embios_syscall_table* __embios_syscall; \
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const uint32_t __embios_required_version = EMBIOS_API_VERSION; \
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const char __embios_incompatible_api_str[] = "Incompatible API version!\nGot %d, need %d";
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theseven |
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#define embios_init() \
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theseven |
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asm volatile("swi\t2\n\tldr\tr3,\t=__embios_required_version\nldr\tr3,\t[r3]\n\t" \
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"ldr\tr2,\t[r0]\n\tcmp\tr3,\tr2\n\tldrls\tr1,\t[r0,#4]\n\tcmpls\tr1,\tr3\n\t" \
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"movhi\tr0,\t#0\n\tldrhi\tr1,\t=__embios_incompatible_api_str\n\t" \
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"swihi\t1\n\tldr\tr1,\t=__embios_syscall\n\tstr\tr0,\t[r1]\n\t" \
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| 99 |
theseven |
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::: "r0", "r1", "r2", "r3", "r12", "lr", "cc", "memory");
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