In memory of Ben “bushing” Byer, who passed away on Monday, February 8th, 2016.

Difference between revisions of "Talk:IOSU syscalls"

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m (Hallowizer2 moved page Talk:IOSU Syscalls to Talk:IOSU syscalls: Sentence case in titles)
 
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It says under heading Syscalls (via syscall instruction) that "Currently only syscall 0x04 is still used in production versions of IOSU."
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I asked how to correctly use IOS_CreateThread : (Here's Tueidj answer)
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This does not seem correct. I see several other Thumb SysCalls still in use on FW 5.5.x (15702)
 
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Example:
 
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    IOS_KERNEL:08133F44 Call_IOS_KERNEL__sys_close                                                               
 
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    IOS_KERNEL:08133F44                              LDR            R12, =(__sys_close+1)           
 
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    IOS_KERNEL:08133F48                              BX              R12 ; __sys_close               
 
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    IOS_KERNEL:08133F4C off_8133F4C                  DCD __sys_close+1                               
 
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    IOS_KERNEL:08133F50 Call_IOS_KERNEL__sys_open                                                               
 
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    IOS_KERNEL:08133F50                              LDR            R12, =(__sys_open+1)             
 
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    IOS_KERNEL:08133F54                              BX              R12 ; __sys_open                 
 
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    IOS_KERNEL:08133F58 off_8133F58                  DCD __sys_open+1                                 
 
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    IOS_KERNEL:08133F5C Call_IOS_KERNEL__sys_read                                                               
 
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    IOS_KERNEL:08133F5C                              LDR            R12, =(__sys_read+1)            
 
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    IOS_KERNEL:08133F60                              BX              R12 ; __sys_read
 
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    IOS_KERNEL:08133F64 off_8133F64                  DCD __sys_read+1
 
  
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IOS_KERNEL, IOS_NIM_BOSS, IOS_FPD,  use more than just 0x04, __sys_write0.  
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proc is a function pointer, for a function that returns a u32 and takes one argument of type void*, which the new thread will execute. stack_top        points to the top of the stack that will be used by the new thread. [[User:Tueidj|Tueidj]] ([[User talk:Tueidj|talk]]) 12:46, 4 August 2016 (CEST)
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Unless otherwise challenged as to why not, I will update the tables to correct this [[User:Datalogger|Datalogger]] ([[User talk:Datalogger|talk]])
 
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:The disassembly you posted just looks like generated thunking stubs, are you sure they're referenced by other code? [[User:Tueidj|Tueidj]] ([[User talk:Tueidj|talk]]) 11:31, 30 April 2016 (CEST)
 

Latest revision as of 04:56, 10 August 2021

I asked how to correctly use IOS_CreateThread : (Here's Tueidj answer)

proc is a function pointer, for a function that returns a u32 and takes one argument of type void*, which the new thread will execute. stack_top points to the top of the stack that will be used by the new thread. Tueidj (talk) 12:46, 4 August 2016 (CEST)

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