diff options
Diffstat (limited to 'libc/sysdeps/linux/arm/crt0pic.S')
| -rw-r--r-- | libc/sysdeps/linux/arm/crt0pic.S | 65 |
1 files changed, 0 insertions, 65 deletions
diff --git a/libc/sysdeps/linux/arm/crt0pic.S b/libc/sysdeps/linux/arm/crt0pic.S deleted file mode 100644 index 7cb26e80e..000000000 --- a/libc/sysdeps/linux/arm/crt0pic.S +++ /dev/null @@ -1,65 +0,0 @@ -/* When we enter this piece of code, the program stack looks like this: - argc argument counter (integer) - argv[0] program name (pointer) - argv[1...N] program args (pointers) - argv[argc-1] end of args (integer) - NULL - env[0...N] environment variables (pointers) - NULL - - When we are done here, we want - a1=argc - a2=argv[0] - a3=argv[argc+1] - -ARM register quick reference: - - Name Number ARM Procedure Calling Standard Role - - a1 r0 argument 1 / integer result / scratch register / argc - a2 r1 argument 2 / scratch register / argv - a3 r2 argument 3 / scratch register / envp - a4 r3 argument 4 / scratch register - v1 r4 register variable - v2 r5 register variable - v3 r6 register variable - v4 r7 register variable - v5 r8 register variable - sb/v6 r9 static base / register variable - sl/v7 r10 stack limit / stack chunk handle / reg. variable - fp r11 frame pointer - ip r12 scratch register / new-sb in inter-link-unit calls - sp r13 lower end of current stack frame - lr r14 link address / scratch register - pc r15 program counter -*/ - -.text - .global _start - .global __uClibc_main - - .type _start,%function - .type __uClibc_main,%function - - -@ r0 = argc -@ r1 = argv -@ r2 = envp -@ sl = data segment -#define BASEREG r9 - -.text -_start: - @ adjust the data segment base pointer - ldr r3,=__data_start - sub sl,sl,r3 - mov BASEREG,sl - - /* pull argc, argv and envp off the stack */ - ldr r0,[sp, #0] - ldr r1,[sp, #4] - ldr r2,[sp, #8] - - /* Ok, now run uClibc's main() -- shouldn't return */ - bl __uClibc_main - |