WorksButNotTested

This is our next problem block: 0xf7d291f0: ldr r3, [r6, #52] ; 0x34 0xf7d291f2: cmp r3, r5 0xf7d291f4: ittte ne 0xf7d291f6: movne r3, #1 0xf7d291f8: strne.w r3, [r0, #256] ;...

Stalker fails to carry out the post-increment. 0x5d, 0xf8, 0x04, 0xfb, /* ldr pc, [sp], #4 */

ARM Writer does not support writing ldmia where Rn is in the reglist

1

The [documentation](https://developer.arm.com/documentation/dui0204/j/arm-and-thumb-instructions/memory-access-instructions/ldm-and-stm) states that: """ In ARM code or pre-Thumb-2 Thumb code, if Rn is in reglist, and writeback is specified with the ! suffix: if the instruction is STM...

ARM Relocator doesn't correctly handle "add ip, pc, #4, #12"

2

The input bytes are: ``` 0xe28fc604 ``` The output it generates is: ``` ldr ip, [pc, #-0] add ip, ip, #4 ``` This results in the LSR not being carried...

ARM Relocator doesn't correctly handle "add sb, pc, r4"

1

The output it generates is: ``` ldr sb, [pc, -#0] add sb, r4, #0 ``` This results in sb being loaded with the value of `r4`, and the value of...

`gum_linux_cpu_type_from_file` uses the constant `G_DATA_STREAM_BYTE_ORDER_LITTLE_ENDIAN` [here](https://github.com/frida/frida-gum/blob/3ac6f1531d5ac350753442cb5840403b301bbb90/gum/backend-linux/gumprocess-linux.c#L1714). Rather than reading the header of the ELF to determine endianness.

Instruction.parse JS API doesn't work correctly on ARM BE8 systems.

3

It seems that the instruction is interpreted big endian even though the instruction stream is little endian.

This line assumes that the auxv contents are little endian. https://github.com/frida/frida-gum/blob/b22ba0713086e990e20d729db4077bcc64c76f2a/gum/backend-linux/gumprocess-linux.c#L1812 [Documentation](https://man7.org/linux/man-pages/man5/proc.5.html) states that: """ The format is one unsigned long ID plus one unsigned long value for each entry....

When using the following test program started in the background: ``` #include int main (void) { puts ("HELLO"); getchar(); } ``` Frida fails to attach with the following message: ```...