1、section关键字可以将变量定义到指定的输入段中, #define SECTION(level) __attribute__((used,__section__(".fn_cmd."level))) #define CMD_START_EXPORT(func,func_s) const struct CMD_LIST cmd_fn_##func SECTION("0.end") = {func,func_s} CMD_START_EXPORT(start_fun,"start_fun"); cons...
1、section关键字可以将变量定义到指定的输入段中, #defineSECTION(level)__attribute__((used,__section__(".fn_cmd."level))) #defineCMD_START_EXPORT(func,func_s)conststructCMD_LISTcmd_fn_##funcSECTION("0.end")={func,func_s} CMD_START_EXPORT(start_fun,"start_fun"); conststructCMD_LIST...
#define __exit_call __attribute_used__ __attribute__ (( __section__ (".exitcall.exit"))) #define __init_refok oninline __attribute__ ((__section__ (".text.init.refok"))) #define __initdata_refok __attribute__ ((__section__ (".data.init.refok"))) #define __exit_ref...
} __attribute__((aligned(4))) bp;structC {inta;charb;structAP px;shortc; } cc;structCP1 {inta;charb;structAP px;shortc; } __attribute__((aligned(4))) cp1;structCP2 {inta;charb;structAP px;shortc; } __attribute__((aligned(8))) cp2;intmain(intargc,char**argv) { printf...
__attribute__((aligned(n))):从此之后默认按n字节对其 例如：struct stu { int a; char b;}__attribute__((packed));struct stu { int a __attribute__((aligned(16))); char b;};例⼦ #include <stdio.h> struct ss { char a __attribute__((aligned(16)));int b;//...
46 #define __exit_call __attribute_used__ __ attribute__ ((__section__ (".exitcall. exit"))) 通常编译器将函数放在.text节,变量放在.data或.bss节,而使用section属性,可以让编译器将函数或变量放在指定的节中。因此上面对__init的定义便表示将__init修饰的代码放在.init.text节。
__attribute__ 书写特征是:__attribute__ 前后都有两个下划线,并切后面会紧跟一对原括弧,括弧里面是相应的__attribute__ 参数。 __attribute__ 语法格式为:__attribute__ ((attribute-list)) 其位置约束为:放于声明的尾部“ ;” 之前。 关键字__attribute__ 也可以对结构体(struct )或共用体(union )进行...
and ensure each global is defined in exactly one C file. If tentative definitions of particular variables need to be placed in a common block, attribute((common)) can be used to force that behavior even in code compiled without -fcommon. As a workaround, legacy C code where all tentative...
b1rodata*) } >FLASHB1 /* this is the EXTMEM */ /* the C or assembly source must explicitly place the code or data there using the "section" attribute */ /* EXTMEM Bank0 */ .eb0text : { *(.eb0text) /* remaining code */ *(.eb0rodata) /* read-only data (constants) *...
(on targets using setjump/longjump or target specific scheme), for linkonce sections, for functions with a user-defined section attribute and on any architecture that does not support named sections. When -fsplit-stack is used this option is not enabled by default (to avoid linker errors), ...