[EXT_EP-10948] assembler/linker incorrectly handles REL relocations if user specifies a CODE_SECTION that starts with 'a' Created: 07/Dec/22 Updated: 02/Apr/24 Resolved: 18/Sep/23 |
|
| Status: | Fixed |
| Project: | Embedded Software & Tools |
| Component/s: | None |
| Affects Version/s: | None |
| Fix Version/s: | None |
| Type: | Bug | Priority: | Medium |
| Reporter: | TI User | Assignee: | TI User |
| Resolution: | Fixed | Votes: | 0 |
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Product: | Code Generation Tools |
| Internal ID: | CODEGEN-10691 |
| Forum URL: | https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/171/t/1167764 |
| Found In Release: | ARMCLANG_2.1.0.LTS C2000_22.6.0.LTS C6000_8.3.0 MSP430_20.2.0.LTS C7000_2.1.0.LTS MSP430_21.6.0.LTS ARMCLANG_1.3.0.LTS C2000_21.6.0.LTS PRU_2.3.0 C7000_3.1.0.LTS ARM_20.2.0.LTS |
| Fix In Release: | MSP430_20.2.8.LTS* C7000_2.1.3.LTS* MSP430_21.6.2.LTS* ARMCLANG_1.3.2.LTS* ARMCLANG_2.1.4.LTS* C7000_3.1.1.LTS C2000_22.6.1.LTS C6000_8.3.13 ARM_20.2.8.LTS* PRU_2.3.4* C2000_21.6.2.LTS* |
| Affected Platform/Device: | default |
| Workaround: | Change the section name used in pragma CODE_SECTION, pragma SET_CODE_SECTION or section attribute from a name starting with "a" to instead start with any other letter or . or : |
| Description |
|
Using CODE_SECTION pragma, SET_CODE_SECTION pragma, or section attribute with a section name that begins with the letter 'a' will cause the linker to generate an incorrect address for accessing variables in that code section. The linker incorrectly assumes the relocation type is RELA instead of REL. More details: #pragma CODE_SECTION(GetA2DAnalogMux, "a2d_funcs")
void GetA2DAnalogMux(void)
{
...
gpioDataReg = (volatile Uint32 *)&GpioDataRegs + (104/32)*(0x8/2);
Build it. % cl2000 -@options.txt file.c -z -o file.out link2000.cmd Inspect the generated assembly file.asm to see ... MOVL XAR4,#||GpioDataRegs||+24 ; [CPU_ARAU] |22245| The symbol GpioDataRegs resolves to the address 0x7f00. So, the final encoding of this address, in hex, is 0x7f18. Disassemble ... % dis2000 file.out > disassembly.txt Inspect the disassembly to see ... 00000003 8f00 MOVL XAR4, #0x007f00 00000004 7f00 0x7f00 is encoded where 0x7f18 is expected. |