[6/6] target/tricore: Enable semihosting

Commit Message

Bastian Koppelmann Oct. 15, 2023, 8:59 p.m. UTC

Signed-off-by: Bastian Koppelmann <[e-mail]>
---
 configs/devices/tricore-softmmu/default.mak |  1 +
 docs/about/emulation.rst                    |  3 +++
 qemu-options.hx                             |  3 ++-
 target/tricore/translate.c                  | 13 +++++++++++--
 4 files changed, 17 insertions(+), 3 deletions(-)

Patch

diff --git a/configs/devices/tricore-softmmu/default.mak b/configs/devices/tricore-softmmu/default.mak
index cb8fc286eb..883903073c 100644
--- a/configs/devices/tricore-softmmu/default.mak
+++ b/configs/devices/tricore-softmmu/default.mak
@@ -1,2 +1,3 @@ 
 CONFIG_TRICORE_TESTBOARD=y
 CONFIG_TRIBOARD=y
+CONFIG_SEMIHOSTING=y
diff --git a/docs/about/emulation.rst b/docs/about/emulation.rst
index 0ad0b86f0d..3ee90bd2aa 100644
--- a/docs/about/emulation.rst
+++ b/docs/about/emulation.rst
@@ -185,6 +185,9 @@  for that architecture.
   * - RISC-V
     - System and User-mode
     - https://github.com/riscv/riscv-semihosting-spec/blob/main/riscv-semihosting-spec.adoc
+  * - TriCore
+    - System
+    - Infineon ISS syscall handling (for GNU tools)
   * - Xtensa
     - System
     - Tensilica ISS SIMCALL
diff --git a/qemu-options.hx b/qemu-options.hx
index 54a7e94970..d7a6cb94c9 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -4816,7 +4816,8 @@  ERST
 DEF("semihosting", 0, QEMU_OPTION_semihosting,
     "-semihosting    semihosting mode\n",
     QEMU_ARCH_ARM | QEMU_ARCH_M68K | QEMU_ARCH_XTENSA |
-    QEMU_ARCH_MIPS | QEMU_ARCH_NIOS2 | QEMU_ARCH_RISCV)
+    QEMU_ARCH_MIPS | QEMU_ARCH_NIOS2 | QEMU_ARCH_RISCV |
+    QEMU_ARCH_TRICORE)
 SRST
 ``-semihosting``
     Enable :ref:`Semihosting` mode (ARM, M68K, Xtensa, MIPS, Nios II, RISC-V only).
diff --git a/target/tricore/translate.c b/target/tricore/translate.c
index dd812ec0f0..1eb44c78c2 100644
--- a/target/tricore/translate.c
+++ b/target/tricore/translate.c
@@ -25,6 +25,7 @@ 
 #include "tcg/tcg-op.h"
 #include "exec/cpu_ldst.h"
 #include "qemu/qemu-print.h"
+#include "semihosting/semihost.h"
 
 #include "exec/helper-proto.h"
 #include "exec/helper-gen.h"
@@ -3151,6 +3152,14 @@  static void gen_compute_branch(DisasContext *ctx, uint32_t opc, int r1,
     }
 }
 
+static void gen_debug(DisasContext *ctx)
+{
+    if (semihosting_enabled(false)) {
+        gen_helper_1arg(tricore_semihost, ctx->base.pc_next);
+    } else {
+        /* raise EXCP_DEBUG */
+    }
+}
 
 /*
  * Functions for decoding instructions
@@ -3497,7 +3506,7 @@  static void decode_sr_system(DisasContext *ctx)
         ctx->base.is_jmp = DISAS_EXIT;
         break;
     case OPC2_16_SR_DEBUG:
-        /* raise EXCP_DEBUG */
+        gen_debug(ctx);
         break;
     case OPC2_16_SR_FRET:
         gen_fret(ctx);
@@ -7926,7 +7935,7 @@  static void decode_sys_interrupts(DisasContext *ctx)
 
     switch (op2) {
     case OPC2_32_SYS_DEBUG:
-        /* raise EXCP_DEBUG */
+        gen_debug(ctx);
         break;
     case OPC2_32_SYS_DISABLE:
         if (ctx->priv == TRICORE_PRIV_SM || ctx->priv == TRICORE_PRIV_UM1) {