diff options
Diffstat (limited to 'sysdeps/loongarch/dl-trampoline.S')
| -rw-r--r-- | sysdeps/loongarch/dl-trampoline.S | 175 |
1 files changed, 174 insertions, 1 deletions
diff --git a/sysdeps/loongarch/dl-trampoline.S b/sysdeps/loongarch/dl-trampoline.S index c978e2ef63..ed9ec0901c 100644 --- a/sysdeps/loongarch/dl-trampoline.S +++ b/sysdeps/loongarch/dl-trampoline.S @@ -19,6 +19,8 @@ #include <sysdep.h> #include <sys/asm.h> +#include "dl-link.h" + /* Assembler veneer called from the PLT header code for lazy loading. The PLT header passes its own args in t0-t2. */ #ifdef __loongarch_soft_float @@ -31,7 +33,6 @@ ENTRY (_dl_runtime_resolve) /* Save arguments to stack. */ ADDI sp, sp, -FRAME_SIZE - REG_S ra, sp, 9*SZREG REG_S a0, sp, 1*SZREG REG_S a1, sp, 2*SZREG @@ -88,3 +89,175 @@ ENTRY (_dl_runtime_resolve) /* Invoke the callee. */ jirl zero, t1, 0 END (_dl_runtime_resolve) + + +ENTRY (_dl_runtime_profile) + /* LoongArch we get called with: + t0 linkr_map pointer + t1 the scaled offset stored in t0, which can be used + to calculate the offset of the current symbol in .rela.plt + t2 %hi(%pcrel(.got.plt)) stored in t2, no use in this function + t3 dl resolver entry point, no use in this function + + Stack frame layout: + [sp, #96] La_loongarch_regs + [sp, #48] La_loongarch_retval + [sp, #40] frame size return from pltenter + [sp, #32] dl_profile_call saved a1 + [sp, #24] dl_profile_call saved a0 + [sp, #16] T1 + [sp, #0] ra, fp <- fp + */ + +# define OFFSET_T1 16 +# define OFFSET_SAVED_CALL_A0 OFFSET_T1 + 8 +# define OFFSET_FS OFFSET_SAVED_CALL_A0 + 16 +# define OFFSET_RV OFFSET_FS + 8 +# define OFFSET_RG OFFSET_RV + DL_SIZEOF_RV + +# define SF_SIZE (-(-(OFFSET_RG + DL_SIZEOF_RG) & ALMASK)) + + /* Save arguments to stack. */ + ADDI sp, sp, -SF_SIZE + REG_S ra, sp, 0 + REG_S fp, sp, 8 + + or fp, sp, zero + + REG_S a0, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 0*SZREG + REG_S a1, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 1*SZREG + REG_S a2, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 2*SZREG + REG_S a3, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 3*SZREG + REG_S a4, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 4*SZREG + REG_S a5, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 5*SZREG + REG_S a6, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 6*SZREG + REG_S a7, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 7*SZREG + +#ifndef __loongarch_soft_float + FREG_S fa0, fp, OFFSET_RG + DL_OFFSET_RG_FA0 + 0*SZFREG + FREG_S fa1, fp, OFFSET_RG + DL_OFFSET_RG_FA0 + 1*SZFREG + FREG_S fa2, fp, OFFSET_RG + DL_OFFSET_RG_FA0 + 2*SZFREG + FREG_S fa3, fp, OFFSET_RG + DL_OFFSET_RG_FA0 + 3*SZFREG + FREG_S fa4, fp, OFFSET_RG + DL_OFFSET_RG_FA0 + 4*SZFREG + FREG_S fa5, fp, OFFSET_RG + DL_OFFSET_RG_FA0 + 5*SZFREG + FREG_S fa6, fp, OFFSET_RG + DL_OFFSET_RG_FA0 + 6*SZFREG + FREG_S fa7, fp, OFFSET_RG + DL_OFFSET_RG_FA0 + 7*SZFREG +#endif + + /* Update .got.plt and obtain runtime address of callee. */ + SLLI a1, t1, 1 + or a0, t0, zero + ADD a1, a1, t1 + or a2, ra, zero /* return addr */ + ADDI a3, fp, OFFSET_RG /* La_loongarch_regs pointer */ + ADDI a4, fp, OFFSET_FS /* frame size return from pltenter */ + + REG_S a0, fp, OFFSET_SAVED_CALL_A0 + REG_S a1, fp, OFFSET_SAVED_CALL_A0 + SZREG + + la t2, _dl_profile_fixup + jirl ra, t2, 0 + + REG_L t3, fp, OFFSET_FS + bge t3, zero, 1f + + /* Save the return. */ + or t4, v0, zero + + /* Restore arguments from stack. */ + REG_L a0, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 0*SZREG + REG_L a1, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 1*SZREG + REG_L a2, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 2*SZREG + REG_L a3, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 3*SZREG + REG_L a4, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 4*SZREG + REG_L a5, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 5*SZREG + REG_L a6, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 6*SZREG + REG_L a7, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 7*SZREG + +#ifndef __loongarch_soft_float + FREG_L fa0, fp, OFFSET_RG + DL_OFFSET_RG_FA0 + 0*SZFREG + FREG_L fa1, fp, OFFSET_RG + DL_OFFSET_RG_FA0 + 1*SZFREG + FREG_L fa2, fp, OFFSET_RG + DL_OFFSET_RG_FA0 + 2*SZFREG + FREG_L fa3, fp, OFFSET_RG + DL_OFFSET_RG_FA0 + 3*SZFREG + FREG_L fa4, fp, OFFSET_RG + DL_OFFSET_RG_FA0 + 4*SZFREG + FREG_L fa5, fp, OFFSET_RG + DL_OFFSET_RG_FA0 + 5*SZFREG + FREG_L fa6, fp, OFFSET_RG + DL_OFFSET_RG_FA0 + 6*SZFREG + FREG_L fa7, fp, OFFSET_RG + DL_OFFSET_RG_FA0 + 7*SZFREG +#endif + + REG_L ra, fp, 0 + REG_L fp, fp, SZREG + + ADDI sp, sp, SF_SIZE + jirl zero, t4, 0 + +1: + /* The new frame size is in t3. */ + SUB sp, fp, t3 + BSTRINS sp, zero, 3, 0 + + REG_S a0, fp, OFFSET_T1 + + or a0, sp, zero + ADDI a1, fp, SF_SIZE + or a2, t3, zero + la t5, memcpy + jirl ra, t5, 0 + + REG_L t6, fp, OFFSET_T1 + + /* Call the function. */ + REG_L a0, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 0*SZREG + REG_L a1, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 1*SZREG + REG_L a2, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 2*SZREG + REG_L a3, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 3*SZREG + REG_L a4, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 4*SZREG + REG_L a5, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 5*SZREG + REG_L a6, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 6*SZREG + REG_L a7, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 7*SZREG + +#ifndef __loongarch_soft_float + FREG_L fa0, fp, OFFSET_RG + DL_OFFSET_RG_FA0 + 0*SZFREG + FREG_L fa1, fp, OFFSET_RG + DL_OFFSET_RG_FA0 + 1*SZFREG + FREG_L fa2, fp, OFFSET_RG + DL_OFFSET_RG_FA0 + 2*SZFREG + FREG_L fa3, fp, OFFSET_RG + DL_OFFSET_RG_FA0 + 3*SZFREG + FREG_L fa4, fp, OFFSET_RG + DL_OFFSET_RG_FA0 + 4*SZFREG + FREG_L fa5, fp, OFFSET_RG + DL_OFFSET_RG_FA0 + 5*SZFREG + FREG_L fa6, fp, OFFSET_RG + DL_OFFSET_RG_FA0 + 6*SZFREG + FREG_L fa7, fp, OFFSET_RG + DL_OFFSET_RG_FA0 + 7*SZFREG +#endif + jirl ra, t6, 0 + + REG_S a0, fp, OFFSET_SAVED_CALL_A0 + DL_OFFSET_RV_A0 + REG_S a1, fp, OFFSET_SAVED_CALL_A0 + DL_OFFSET_RV_A0 + SZREG + +#ifndef __loongarch_soft_float + FREG_S fa0, fp, OFFSET_SAVED_CALL_A0 + DL_OFFSET_RV_FA0 + FREG_S fa1, fp, OFFSET_SAVED_CALL_A0 + DL_OFFSET_RV_FA0 + SZFREG +#endif + + /* Setup call to pltexit. */ + REG_L a0, fp, OFFSET_SAVED_CALL_A0 + REG_L a1, fp, OFFSET_SAVED_CALL_A0 + SZREG + ADDI a2, fp, OFFSET_RG + ADDI a3, fp, OFFSET_RV + la t7, _dl_audit_pltexit + jirl ra, t7, 0 + + REG_L a0, fp, OFFSET_RV + DL_OFFSET_RV_A0 + REG_L a1, fp, OFFSET_RV + DL_OFFSET_RV_A0 + SZREG + +#ifndef __loongarch_soft_float + FREG_L fa0, fp, OFFSET_RV + DL_OFFSET_RV_FA0 + FREG_L fa1, fp, OFFSET_RV + DL_OFFSET_RV_FA0 + SZFREG +#endif + + /* RA from within La_loongarch_reg. */ + REG_L ra, fp, OFFSET_RG + DL_OFFSET_RG_RA + or sp, fp, zero + ADDI sp, sp, SF_SIZE + REG_S fp, fp, SZREG + + jirl zero, ra, 0 + +END (_dl_runtime_profile) |