diff options
| -rw-r--r-- | rtl/linux/mips/prt0.as | 83 |
1 files changed, 42 insertions, 41 deletions
diff --git a/rtl/linux/mips/prt0.as b/rtl/linux/mips/prt0.as index 0bd2c63333..e0ad7af96b 100644 --- a/rtl/linux/mips/prt0.as +++ b/rtl/linux/mips/prt0.as @@ -12,44 +12,42 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. */ .set noat + .set noreorder + .section ".text" - .section ".text" - - .align 4 - .global _dynamic_start - .ent _dynamic_start - .type _dynamic_start,@function + .align 4 + .global _dynamic_start + .ent _dynamic_start + .type _dynamic_start,@function _dynamic_start: - /* TODO: check whether this code is correct */ lui $a2,%hi(__dl_fini) - sw $v0,%lo(__dl_fini)($a2) b _start - nop + sw $v0,%lo(__dl_fini)($a2) - .end _dynamic_start - .size _dynamic_start, .-_dynamic_start + .end _dynamic_start + .size _dynamic_start, .-_dynamic_start - .align 4 - .global _start + .align 4 + .global _start .set nomips16 .ent _start - .type _start,@function + .type _start,@function /* This is the canonical entry point, usually the first thing in the text segment. The SVR4/Mips ABI (pages 3-31, 3-32) says that when the entry point runs, most registers' values are unspecified, except for: - v0 ($2) Function pointer of a function to be executed at exit + v0 ($2) Function pointer of a function to be executed at exit - sp ($29) The stack contains the arguments and environment: - 0(%sp) argc - 4(%sp) argv[0] + sp ($29) The stack contains the arguments and environment: + 0(%sp) argc + 4(%sp) argv[0] - ... - (4*argc)(%sp) NULL - (4*(argc+1))(%sp) envp[0] - ... - NULL - ra ($31) Return address set to zero. + ... + (4*argc)(%sp) NULL + 4*(argc+1))(%sp) envp[0] + ... + NULL + ra ($31) Return address set to zero. */ _start: /* load fp */ @@ -63,12 +61,6 @@ _start: addiu $sp,$sp,-32 - lui $s7,0x3d - addiu $s7,$s7,2304 - li $at,-8 - and $s7,$s7,$at - addiu $s7,$s7,-32 - /* store argc */ lw $a0,0($s8) lui $a1,%hi(operatingsystem_parameter_argc) @@ -89,25 +81,33 @@ _start: addiu $t9,$t9,%lo(PASCALMAIN) jalr $t9 nop - b _haltproc + b _haltproc nop - .end _start - .size _start, .-_start + .end _start + .size _start, .-_start - .globl _haltproc - .ent _haltproc - .type _haltproc,@function + .globl _haltproc + .ent _haltproc + .type _haltproc,@function _haltproc: - /* TODO: need to check whether __dl_fini is non-zero and call the function pointer in case */ - + addiu $sp,$sp,-24 + sw $a0,16($sp) /* $a0 contains the exitcode */ + lui $at,%hi(__dl_fini) + lw $t9,%lo(__dl_fini)($at) + beqz $t9,.L1 + nop + jalr $t9 +.L1: + lw $a0,16($sp) li $v0,4001 syscall - b _haltproc + nop + b .L1 nop - .end _haltproc - .size _haltproc, .-_haltproc + .end _haltproc + .size _haltproc, .-_haltproc .comm __stkptr,4 .comm __dl_fini,4 @@ -116,3 +116,4 @@ _haltproc: .comm operatingsystem_parameter_argc,4 .comm operatingsystem_parameter_argv,4 +.section .note.GNU-stack,"",@progbits |