diff options
Diffstat (limited to 'libc/sysdeps/linux/arm/crt0pic.S')
-rw-r--r-- | libc/sysdeps/linux/arm/crt0pic.S | 69 |
1 files changed, 22 insertions, 47 deletions
diff --git a/libc/sysdeps/linux/arm/crt0pic.S b/libc/sysdeps/linux/arm/crt0pic.S index 04b1cb755..7cb26e80e 100644 --- a/libc/sysdeps/linux/arm/crt0pic.S +++ b/libc/sysdeps/linux/arm/crt0pic.S @@ -14,37 +14,32 @@ ARM register quick reference: - Name Number APCS Role - - a1 0 argument 1 / integer result / scratch register / argc - a2 1 argument 2 / scratch register / argv - a3 2 argument 3 / scratch register / envp - a4 3 argument 4 / scratch register - v1 4 register variable - v2 5 register variable - v3 6 register variable - v4 7 register variable - v5 8 register variable - sb/v6 9 static base / register variable - sl/v7 10 stack limit / stack chunk handle / reg. variable - fp 11 frame pointer - ip 12 scratch register / new-sb in inter-link-unit calls - sp 13 lower end of current stack frame - lr 14 link address / scratch register - pc 15 program counter + 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 - .align 2 - .global __environ .global _start - .global exit - .global main + .global __uClibc_main .type _start,%function - .type exit,%function - .type main,%function - + .type __uClibc_main,%function @ r0 = argc @@ -60,31 +55,11 @@ _start: sub sl,sl,r3 mov BASEREG,sl - ldr r3, .L3 - str r2,[BASEREG,r3] - /* pull argc, argv and envp off the stack */ ldr r0,[sp, #0] ldr r1,[sp, #4] ldr r2,[sp, #8] - bl main -/* ldr r0,=0 */ - bl exit - -.align 2 -.L3: - .word __environ - - -.data - .align 2 - .global __environ - -__environ: - .long 0 - -.weak environ -environ = __environ - + /* Ok, now run uClibc's main() -- shouldn't return */ + bl __uClibc_main |